spanner

type AutoscalingConfig struct {
	// AutoscalingLimits: Required. Autoscaling limits for an instance.
	AutoscalingLimits *AutoscalingLimits `json:"autoscalingLimits,omitempty"`

	// AutoscalingTargets: Required. The autoscaling targets for an
	// instance.
	AutoscalingTargets *AutoscalingTargets `json:"autoscalingTargets,omitempty"`

	// ForceSendFields is a list of field names (e.g. "AutoscalingLimits")
	// to unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "AutoscalingLimits") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type AutoscalingLimits struct {
	// MaxNodes: Maximum number of nodes allocated to the instance. If set,
	// this number should be greater than or equal to min_nodes.
	MaxNodes int64 `json:"maxNodes,omitempty"`

	// MaxProcessingUnits: Maximum number of processing units allocated to
	// the instance. If set, this number should be multiples of 1000 and be
	// greater than or equal to min_processing_units.
	MaxProcessingUnits int64 `json:"maxProcessingUnits,omitempty"`

	// MinNodes: Minimum number of nodes allocated to the instance. If set,
	// this number should be greater than or equal to 1.
	MinNodes int64 `json:"minNodes,omitempty"`

	// MinProcessingUnits: Minimum number of processing units allocated to
	// the instance. If set, this number should be multiples of 1000.
	MinProcessingUnits int64 `json:"minProcessingUnits,omitempty"`

	// ForceSendFields is a list of field names (e.g. "MaxNodes") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "MaxNodes") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type AutoscalingTargets struct {
	// HighPriorityCpuUtilizationPercent: Required. The target high priority
	// cpu utilization percentage that the autoscaler should be trying to
	// achieve for the instance. This number is on a scale from 0 (no
	// utilization) to 100 (full utilization). The valid range is [10, 90]
	// inclusive.
	HighPriorityCpuUtilizationPercent int64 `json:"highPriorityCpuUtilizationPercent,omitempty"`

	// StorageUtilizationPercent: Required. The target storage utilization
	// percentage that the autoscaler should be trying to achieve for the
	// instance. This number is on a scale from 0 (no utilization) to 100
	// (full utilization). The valid range is [10, 99] inclusive.
	StorageUtilizationPercent int64 `json:"storageUtilizationPercent,omitempty"`

	// ForceSendFields is a list of field names (e.g.
	// "HighPriorityCpuUtilizationPercent") to unconditionally include in
	// API requests. By default, fields with empty or default values are
	// omitted from API requests. However, any non-pointer, non-interface
	// field appearing in ForceSendFields will be sent to the server
	// regardless of whether the field is empty or not. This may be used to
	// include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g.
	// "HighPriorityCpuUtilizationPercent") to include in API requests with
	// the JSON null value. By default, fields with empty values are omitted
	// from API requests. However, any field with an empty value appearing
	// in NullFields will be sent to the server as null. It is an error if a
	// field in this list has a non-empty value. This may be used to include
	// null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Backup struct {
	// CreateTime: Output only. The time the CreateBackup request is
	// received. If the request does not specify `version_time`, the
	// `version_time` of the backup will be equivalent to the `create_time`.
	CreateTime string `json:"createTime,omitempty"`

	// Database: Required for the CreateBackup operation. Name of the
	// database from which this backup was created. This needs to be in the
	// same instance as the backup. Values are of the form
	// `projects//instances//databases/`.
	Database string `json:"database,omitempty"`

	// DatabaseDialect: Output only. The database dialect information for
	// the backup.
	//
	// Possible values:
	//   "DATABASE_DIALECT_UNSPECIFIED" - Default value. This value will
	// create a database with the GOOGLE_STANDARD_SQL dialect.
	//   "GOOGLE_STANDARD_SQL" - GoogleSQL supported SQL.
	//   "POSTGRESQL" - PostgreSQL supported SQL.
	DatabaseDialect string `json:"databaseDialect,omitempty"`

	// EncryptionInfo: Output only. The encryption information for the
	// backup.
	EncryptionInfo *EncryptionInfo `json:"encryptionInfo,omitempty"`

	// ExpireTime: Required for the CreateBackup operation. The expiration
	// time of the backup, with microseconds granularity that must be at
	// least 6 hours and at most 366 days from the time the CreateBackup
	// request is processed. Once the `expire_time` has passed, the backup
	// is eligible to be automatically deleted by Cloud Spanner to free the
	// resources used by the backup.
	ExpireTime string `json:"expireTime,omitempty"`

	// MaxExpireTime: Output only. The max allowed expiration time of the
	// backup, with microseconds granularity. A backup's expiration time can
	// be configured in multiple APIs: CreateBackup, UpdateBackup,
	// CopyBackup. When updating or copying an existing backup, the
	// expiration time specified must be less than `Backup.max_expire_time`.
	MaxExpireTime string `json:"maxExpireTime,omitempty"`

	// Name: Output only for the CreateBackup operation. Required for the
	// UpdateBackup operation. A globally unique identifier for the backup
	// which cannot be changed. Values are of the form
	// `projects//instances//backups/a-z*[a-z0-9]` The final segment of the
	// name must be between 2 and 60 characters in length. The backup is
	// stored in the location(s) specified in the instance configuration of
	// the instance containing the backup, identified by the prefix of the
	// backup name of the form `projects//instances/`.
	Name string `json:"name,omitempty"`

	// ReferencingBackups: Output only. The names of the destination backups
	// being created by copying this source backup. The backup names are of
	// the form `projects//instances//backups/`. Referencing backups may
	// exist in different instances. The existence of any referencing backup
	// prevents the backup from being deleted. When the copy operation is
	// done (either successfully completed or cancelled or the destination
	// backup is deleted), the reference to the backup is removed.
	ReferencingBackups []string `json:"referencingBackups,omitempty"`

	// ReferencingDatabases: Output only. The names of the restored
	// databases that reference the backup. The database names are of the
	// form `projects//instances//databases/`. Referencing databases may
	// exist in different instances. The existence of any referencing
	// database prevents the backup from being deleted. When a restored
	// database from the backup enters the `READY` state, the reference to
	// the backup is removed.
	ReferencingDatabases []string `json:"referencingDatabases,omitempty"`

	// SizeBytes: Output only. Size of the backup in bytes.
	SizeBytes int64 `json:"sizeBytes,omitempty,string"`

	// State: Output only. The current state of the backup.
	//
	// Possible values:
	//   "STATE_UNSPECIFIED" - Not specified.
	//   "CREATING" - The pending backup is still being created. Operations
	// on the backup may fail with `FAILED_PRECONDITION` in this state.
	//   "READY" - The backup is complete and ready for use.
	State string `json:"state,omitempty"`

	// VersionTime: The backup will contain an externally consistent copy of
	// the database at the timestamp specified by `version_time`. If
	// `version_time` is not specified, the system will set `version_time`
	// to the `create_time` of the backup.
	VersionTime string `json:"versionTime,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "CreateTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CreateTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type BackupInfo struct {
	// Backup: Name of the backup.
	Backup string `json:"backup,omitempty"`

	// CreateTime: The time the CreateBackup request was received.
	CreateTime string `json:"createTime,omitempty"`

	// SourceDatabase: Name of the database the backup was created from.
	SourceDatabase string `json:"sourceDatabase,omitempty"`

	// VersionTime: The backup contains an externally consistent copy of
	// `source_database` at the timestamp specified by `version_time`. If
	// the CreateBackup request did not specify `version_time`, the
	// `version_time` of the backup is equivalent to the `create_time`.
	VersionTime string `json:"versionTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Backup") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Backup") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type BatchCreateSessionsRequest struct {
	// SessionCount: Required. The number of sessions to be created in this
	// batch call. The API may return fewer than the requested number of
	// sessions. If a specific number of sessions are desired, the client
	// can make additional calls to BatchCreateSessions (adjusting
	// session_count as necessary).
	SessionCount int64 `json:"sessionCount,omitempty"`

	// SessionTemplate: Parameters to be applied to each created session.
	SessionTemplate *Session `json:"sessionTemplate,omitempty"`

	// ForceSendFields is a list of field names (e.g. "SessionCount") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "SessionCount") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type BatchCreateSessionsResponse struct {
	// Session: The freshly created sessions.
	Session []*Session `json:"session,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Session") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Session") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type BatchWriteRequest struct {
	// ExcludeTxnFromChangeStreams: Optional. When
	// `exclude_txn_from_change_streams` is set to `true`: * Mutations from
	// all transactions in this batch write operation will not be recorded
	// in change streams with DDL option `allow_txn_exclusion=true` that are
	// tracking columns modified by these transactions. * Mutations from all
	// transactions in this batch write operation will be recorded in change
	// streams with DDL option `allow_txn_exclusion=false or not set` that
	// are tracking columns modified by these transactions. When
	// `exclude_txn_from_change_streams` is set to `false` or not set,
	// mutations from all transactions in this batch write operation will be
	// recorded in all change streams that are tracking columns modified by
	// these transactions.
	ExcludeTxnFromChangeStreams bool `json:"excludeTxnFromChangeStreams,omitempty"`

	// MutationGroups: Required. The groups of mutations to be applied.
	MutationGroups []*MutationGroup `json:"mutationGroups,omitempty"`

	// RequestOptions: Common options for this request.
	RequestOptions *RequestOptions `json:"requestOptions,omitempty"`

	// ForceSendFields is a list of field names (e.g.
	// "ExcludeTxnFromChangeStreams") to unconditionally include in API
	// requests. By default, fields with empty or default values are omitted
	// from API requests. However, any non-pointer, non-interface field
	// appearing in ForceSendFields will be sent to the server regardless of
	// whether the field is empty or not. This may be used to include empty
	// fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g.
	// "ExcludeTxnFromChangeStreams") to include in API requests with the
	// JSON null value. By default, fields with empty values are omitted
	// from API requests. However, any field with an empty value appearing
	// in NullFields will be sent to the server as null. It is an error if a
	// field in this list has a non-empty value. This may be used to include
	// null fields in Patch requests.
	NullFields []string `json:"-"`
}

type BatchWriteResponse struct {
	// CommitTimestamp: The commit timestamp of the transaction that applied
	// this batch. Present if `status` is `OK`, absent otherwise.
	CommitTimestamp string `json:"commitTimestamp,omitempty"`

	// Indexes: The mutation groups applied in this batch. The values index
	// into the `mutation_groups` field in the corresponding
	// `BatchWriteRequest`.
	Indexes []int64 `json:"indexes,omitempty"`

	// Status: An `OK` status indicates success. Any other status indicates
	// a failure.
	Status *Status `json:"status,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "CommitTimestamp") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CommitTimestamp") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type BeginTransactionRequest struct {
	// Options: Required. Options for the new transaction.
	Options *TransactionOptions `json:"options,omitempty"`

	// RequestOptions: Common options for this request. Priority is ignored
	// for this request. Setting the priority in this request_options struct
	// will not do anything. To set the priority for a transaction, set it
	// on the reads and writes that are part of this transaction instead.
	RequestOptions *RequestOptions `json:"requestOptions,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Options") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Options") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Binding struct {
	// Condition: The condition that is associated with this binding. If the
	// condition evaluates to `true`, then this binding applies to the
	// current request. If the condition evaluates to `false`, then this
	// binding does not apply to the current request. However, a different
	// role binding might grant the same role to one or more of the
	// principals in this binding. To learn which resources support
	// conditions in their IAM policies, see the IAM documentation
	// (https://cloud.google.com/iam/help/conditions/resource-policies).
	Condition *Expr `json:"condition,omitempty"`

	// Members: Specifies the principals requesting access for a Google
	// Cloud resource. `members` can have the following values: *
	// `allUsers`: A special identifier that represents anyone who is on the
	// internet; with or without a Google account. *
	// `allAuthenticatedUsers`: A special identifier that represents anyone
	// who is authenticated with a Google account or a service account. Does
	// not include identities that come from external identity providers
	// (IdPs) through identity federation. * `user:{emailid}`: An email
	// address that represents a specific Google account. For example,
	// `alice@example.com` . * `serviceAccount:{emailid}`: An email address
	// that represents a Google service account. For example,
	// `my-other-app@appspot.gserviceaccount.com`. *
	// `serviceAccount:{projectid}.svc.id.goog[{namespace}/{kubernetes-sa}]`:
	//  An identifier for a Kubernetes service account
	// (https://cloud.google.com/kubernetes-engine/docs/how-to/kubernetes-service-accounts).
	// For example, `my-project.svc.id.goog[my-namespace/my-kubernetes-sa]`.
	// * `group:{emailid}`: An email address that represents a Google group.
	// For example, `admins@example.com`. * `domain:{domain}`: The G Suite
	// domain (primary) that represents all the users of that domain. For
	// example, `google.com` or `example.com`. *
	// `principal://iam.googleapis.com/locations/global/workforcePools/{pool_
	// id}/subject/{subject_attribute_value}`: A single identity in a
	// workforce identity pool. *
	// `principalSet://iam.googleapis.com/locations/global/workforcePools/{po
	// ol_id}/group/{group_id}`: All workforce identities in a group. *
	// `principalSet://iam.googleapis.com/locations/global/workforcePools/{po
	// ol_id}/attribute.{attribute_name}/{attribute_value}`: All workforce
	// identities with a specific attribute value. *
	// `principalSet://iam.googleapis.com/locations/global/workforcePools/{po
	// ol_id}/*`: All identities in a workforce identity pool. *
	// `principal://iam.googleapis.com/projects/{project_number}/locations/gl
	// obal/workloadIdentityPools/{pool_id}/subject/{subject_attribute_value}
	// `: A single identity in a workload identity pool. *
	// `principalSet://iam.googleapis.com/projects/{project_number}/locations
	// /global/workloadIdentityPools/{pool_id}/group/{group_id}`: A workload
	// identity pool group. *
	// `principalSet://iam.googleapis.com/projects/{project_number}/locations
	// /global/workloadIdentityPools/{pool_id}/attribute.{attribute_name}/{at
	// tribute_value}`: All identities in a workload identity pool with a
	// certain attribute. *
	// `principalSet://iam.googleapis.com/projects/{project_number}/locations
	// /global/workloadIdentityPools/{pool_id}/*`: All identities in a
	// workload identity pool. * `deleted:user:{emailid}?uid={uniqueid}`: An
	// email address (plus unique identifier) representing a user that has
	// been recently deleted. For example,
	// `alice@example.com?uid=123456789012345678901`. If the user is
	// recovered, this value reverts to `user:{emailid}` and the recovered
	// user retains the role in the binding. *
	// `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address
	// (plus unique identifier) representing a service account that has been
	// recently deleted. For example,
	// `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
	// If the service account is undeleted, this value reverts to
	// `serviceAccount:{emailid}` and the undeleted service account retains
	// the role in the binding. * `deleted:group:{emailid}?uid={uniqueid}`:
	// An email address (plus unique identifier) representing a Google group
	// that has been recently deleted. For example,
	// `admins@example.com?uid=123456789012345678901`. If the group is
	// recovered, this value reverts to `group:{emailid}` and the recovered
	// group retains the role in the binding. *
	// `deleted:principal://iam.googleapis.com/locations/global/workforcePool
	// s/{pool_id}/subject/{subject_attribute_value}`: Deleted single
	// identity in a workforce identity pool. For example,
	// `deleted:principal://iam.googleapis.com/locations/global/workforcePool
	// s/my-pool-id/subject/my-subject-attribute-value`.
	Members []string `json:"members,omitempty"`

	// Role: Role that is assigned to the list of `members`, or principals.
	// For example, `roles/viewer`, `roles/editor`, or `roles/owner`. For an
	// overview of the IAM roles and permissions, see the IAM documentation
	// (https://cloud.google.com/iam/docs/roles-overview). For a list of the
	// available pre-defined roles, see here
	// (https://cloud.google.com/iam/docs/understanding-roles).
	Role string `json:"role,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Condition") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Condition") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ChildLink struct {
	// ChildIndex: The node to which the link points.
	ChildIndex int64 `json:"childIndex,omitempty"`

	// Type: The type of the link. For example, in Hash Joins this could be
	// used to distinguish between the build child and the probe child, or
	// in the case of the child being an output variable, to represent the
	// tag associated with the output variable.
	Type string `json:"type,omitempty"`

	// Variable: Only present if the child node is SCALAR and corresponds to
	// an output variable of the parent node. The field carries the name of
	// the output variable. For example, a `TableScan` operator that reads
	// rows from a table will have child links to the `SCALAR` nodes
	// representing the output variables created for each column that is
	// read by the operator. The corresponding `variable` fields will be set
	// to the variable names assigned to the columns.
	Variable string `json:"variable,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ChildIndex") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ChildIndex") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CommitRequest struct {
	// MaxCommitDelay: Optional. The amount of latency this request is
	// configured to incur in order to improve throughput. If this field is
	// not set, Spanner assumes requests are relatively latency sensitive
	// and automatically determines an appropriate delay time. You can
	// specify a commit delay value between 0 and 500 ms.
	MaxCommitDelay string `json:"maxCommitDelay,omitempty"`

	// Mutations: The mutations to be executed when this transaction
	// commits. All mutations are applied atomically, in the order they
	// appear in this list.
	Mutations []*Mutation `json:"mutations,omitempty"`

	// RequestOptions: Common options for this request.
	RequestOptions *RequestOptions `json:"requestOptions,omitempty"`

	// ReturnCommitStats: If `true`, then statistics related to the
	// transaction will be included in the CommitResponse. Default value is
	// `false`.
	ReturnCommitStats bool `json:"returnCommitStats,omitempty"`

	// SingleUseTransaction: Execute mutations in a temporary transaction.
	// Note that unlike commit of a previously-started transaction, commit
	// with a temporary transaction is non-idempotent. That is, if the
	// `CommitRequest` is sent to Cloud Spanner more than once (for
	// instance, due to retries in the application, or in the transport
	// library), it is possible that the mutations are executed more than
	// once. If this is undesirable, use BeginTransaction and Commit
	// instead.
	SingleUseTransaction *TransactionOptions `json:"singleUseTransaction,omitempty"`

	// TransactionId: Commit a previously-started transaction.
	TransactionId string `json:"transactionId,omitempty"`

	// ForceSendFields is a list of field names (e.g. "MaxCommitDelay") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "MaxCommitDelay") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type CommitResponse struct {
	// CommitStats: The statistics about this Commit. Not returned by
	// default. For more information, see CommitRequest.return_commit_stats.
	CommitStats *CommitStats `json:"commitStats,omitempty"`

	// CommitTimestamp: The Cloud Spanner timestamp at which the transaction
	// committed.
	CommitTimestamp string `json:"commitTimestamp,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "CommitStats") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CommitStats") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CommitStats struct {
	// MutationCount: The total number of mutations for the transaction.
	// Knowing the `mutation_count` value can help you maximize the number
	// of mutations in a transaction and minimize the number of API round
	// trips. You can also monitor this value to prevent transactions from
	// exceeding the system limit
	// (https://cloud.google.com/spanner/quotas#limits_for_creating_reading_updating_and_deleting_data).
	// If the number of mutations exceeds the limit, the server returns
	// INVALID_ARGUMENT
	// (https://cloud.google.com/spanner/docs/reference/rest/v1/Code#ENUM_VALUES.INVALID_ARGUMENT).
	MutationCount int64 `json:"mutationCount,omitempty,string"`

	// ForceSendFields is a list of field names (e.g. "MutationCount") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "MutationCount") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ContextValue struct {
	// Label: The label for the context value. e.g. "latency".
	Label *LocalizedString `json:"label,omitempty"`

	// Severity: The severity of this context.
	//
	// Possible values:
	//   "SEVERITY_UNSPECIFIED" - Required default value.
	//   "INFO" - Lowest severity level "Info".
	//   "WARNING" - Middle severity level "Warning".
	//   "ERROR" - Severity level signaling an error "Error"
	//   "FATAL" - Severity level signaling a non recoverable error "Fatal"
	Severity string `json:"severity,omitempty"`

	// Unit: The unit of the context value.
	Unit string `json:"unit,omitempty"`

	// Value: The value for the context.
	Value float64 `json:"value,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Label") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Label") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CopyBackupEncryptionConfig struct {
	// EncryptionType: Required. The encryption type of the backup.
	//
	// Possible values:
	//   "ENCRYPTION_TYPE_UNSPECIFIED" - Unspecified. Do not use.
	//   "USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION" - This is the default
	// option for CopyBackup when encryption_config is not specified. For
	// example, if the source backup is using `Customer_Managed_Encryption`,
	// the backup will be using the same Cloud KMS key as the source backup.
	//   "GOOGLE_DEFAULT_ENCRYPTION" - Use Google default encryption.
	//   "CUSTOMER_MANAGED_ENCRYPTION" - Use customer managed encryption. If
	// specified, either `kms_key_name` or `kms_key_names` must contain
	// valid Cloud KMS key(s).
	EncryptionType string `json:"encryptionType,omitempty"`

	// KmsKeyName: Optional. The Cloud KMS key that will be used to protect
	// the backup. This field should be set only when encryption_type is
	// `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
	// `projects//locations//keyRings//cryptoKeys/`.
	KmsKeyName string `json:"kmsKeyName,omitempty"`

	// ForceSendFields is a list of field names (e.g. "EncryptionType") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "EncryptionType") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type CopyBackupMetadata struct {
	// CancelTime: The time at which cancellation of CopyBackup operation
	// was received. Operations.CancelOperation starts asynchronous
	// cancellation on a long-running operation. The server makes a best
	// effort to cancel the operation, but success is not guaranteed.
	// Clients can use Operations.GetOperation or other methods to check
	// whether the cancellation succeeded or whether the operation completed
	// despite cancellation. On successful cancellation, the operation is
	// not deleted; instead, it becomes an operation with an Operation.error
	// value with a google.rpc.Status.code of 1, corresponding to
	// `Code.CANCELLED`.
	CancelTime string `json:"cancelTime,omitempty"`

	// Name: The name of the backup being created through the copy
	// operation. Values are of the form `projects//instances//backups/`.
	Name string `json:"name,omitempty"`

	// Progress: The progress of the CopyBackup operation.
	Progress *OperationProgress `json:"progress,omitempty"`

	// SourceBackup: The name of the source backup that is being copied.
	// Values are of the form `projects//instances//backups/`.
	SourceBackup string `json:"sourceBackup,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CancelTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CancelTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CopyBackupRequest struct {
	// BackupId: Required. The id of the backup copy. The `backup_id`
	// appended to `parent` forms the full backup_uri of the form
	// `projects//instances//backups/`.
	BackupId string `json:"backupId,omitempty"`

	// EncryptionConfig: Optional. The encryption configuration used to
	// encrypt the backup. If this field is not specified, the backup will
	// use the same encryption configuration as the source backup by
	// default, namely encryption_type =
	// `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
	EncryptionConfig *CopyBackupEncryptionConfig `json:"encryptionConfig,omitempty"`

	// ExpireTime: Required. The expiration time of the backup in
	// microsecond granularity. The expiration time must be at least 6 hours
	// and at most 366 days from the `create_time` of the source backup.
	// Once the `expire_time` has passed, the backup is eligible to be
	// automatically deleted by Cloud Spanner to free the resources used by
	// the backup.
	ExpireTime string `json:"expireTime,omitempty"`

	// SourceBackup: Required. The source backup to be copied. The source
	// backup needs to be in READY state for it to be copied. Once
	// CopyBackup is in progress, the source backup cannot be deleted or
	// cleaned up on expiration until CopyBackup is finished. Values are of
	// the form: `projects//instances//backups/`.
	SourceBackup string `json:"sourceBackup,omitempty"`

	// ForceSendFields is a list of field names (e.g. "BackupId") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "BackupId") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateBackupMetadata struct {
	// CancelTime: The time at which cancellation of this operation was
	// received. Operations.CancelOperation starts asynchronous cancellation
	// on a long-running operation. The server makes a best effort to cancel
	// the operation, but success is not guaranteed. Clients can use
	// Operations.GetOperation or other methods to check whether the
	// cancellation succeeded or whether the operation completed despite
	// cancellation. On successful cancellation, the operation is not
	// deleted; instead, it becomes an operation with an Operation.error
	// value with a google.rpc.Status.code of 1, corresponding to
	// `Code.CANCELLED`.
	CancelTime string `json:"cancelTime,omitempty"`

	// Database: The name of the database the backup is created from.
	Database string `json:"database,omitempty"`

	// Name: The name of the backup being created.
	Name string `json:"name,omitempty"`

	// Progress: The progress of the CreateBackup operation.
	Progress *OperationProgress `json:"progress,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CancelTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CancelTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateDatabaseMetadata struct {
	// Database: The database being created.
	Database string `json:"database,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Database") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Database") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateDatabaseRequest struct {
	// CreateStatement: Required. A `CREATE DATABASE` statement, which
	// specifies the ID of the new database. The database ID must conform to
	// the regular expression `a-z*[a-z0-9]` and be between 2 and 30
	// characters in length. If the database ID is a reserved word or if it
	// contains a hyphen, the database ID must be enclosed in backticks (“
	// ` “).
	CreateStatement string `json:"createStatement,omitempty"`

	// DatabaseDialect: Optional. The dialect of the Cloud Spanner Database.
	//
	// Possible values:
	//   "DATABASE_DIALECT_UNSPECIFIED" - Default value. This value will
	// create a database with the GOOGLE_STANDARD_SQL dialect.
	//   "GOOGLE_STANDARD_SQL" - GoogleSQL supported SQL.
	//   "POSTGRESQL" - PostgreSQL supported SQL.
	DatabaseDialect string `json:"databaseDialect,omitempty"`

	// EncryptionConfig: Optional. The encryption configuration for the
	// database. If this field is not specified, Cloud Spanner will
	// encrypt/decrypt all data at rest using Google default encryption.
	EncryptionConfig *EncryptionConfig `json:"encryptionConfig,omitempty"`

	// ExtraStatements: Optional. A list of DDL statements to run inside the
	// newly created database. Statements can create tables, indexes, etc.
	// These statements execute atomically with the creation of the
	// database: if there is an error in any statement, the database is not
	// created.
	ExtraStatements []string `json:"extraStatements,omitempty"`

	// ProtoDescriptors: Optional. Proto descriptors used by CREATE/ALTER
	// PROTO BUNDLE statements in 'extra_statements' above. Contains a
	// protobuf-serialized google.protobuf.FileDescriptorSet
	// (https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/descriptor.proto).
	// To generate it, install (https://grpc.io/docs/protoc-installation/)
	// and run `protoc` with --include_imports and --descriptor_set_out. For
	// example, to generate for moon/shot/app.proto, run “` $protoc
	// --proto_path=/app_path --proto_path=/lib_path \ --include_imports \
	// --descriptor_set_out=descriptors.data \ moon/shot/app.proto “` For
	// more details, see protobuffer self description
	// (https://developers.google.com/protocol-buffers/docs/techniques#self-description).
	ProtoDescriptors string `json:"protoDescriptors,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CreateStatement") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CreateStatement") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type CreateInstanceConfigMetadata struct {
	// CancelTime: The time at which this operation was cancelled.
	CancelTime string `json:"cancelTime,omitempty"`

	// InstanceConfig: The target instance config end state.
	InstanceConfig *InstanceConfig `json:"instanceConfig,omitempty"`

	// Progress: The progress of the CreateInstanceConfig operation.
	Progress *InstanceOperationProgress `json:"progress,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CancelTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CancelTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateInstanceConfigRequest struct {
	// InstanceConfig: Required. The InstanceConfig proto of the
	// configuration to create. instance_config.name must be
	// `/instanceConfigs/`. instance_config.base_config must be a Google
	// managed configuration name, e.g. /instanceConfigs/us-east1,
	// /instanceConfigs/nam3.
	InstanceConfig *InstanceConfig `json:"instanceConfig,omitempty"`

	// InstanceConfigId: Required. The ID of the instance config to create.
	// Valid identifiers are of the form `custom-[-a-z0-9]*[a-z0-9]` and
	// must be between 2 and 64 characters in length. The `custom-` prefix
	// is required to avoid name conflicts with Google managed
	// configurations.
	InstanceConfigId string `json:"instanceConfigId,omitempty"`

	// ValidateOnly: An option to validate, but not actually execute, a
	// request, and provide the same response.
	ValidateOnly bool `json:"validateOnly,omitempty"`

	// ForceSendFields is a list of field names (e.g. "InstanceConfig") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "InstanceConfig") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type CreateInstanceMetadata struct {
	// CancelTime: The time at which this operation was cancelled. If set,
	// this operation is in the process of undoing itself (which is
	// guaranteed to succeed) and cannot be cancelled again.
	CancelTime string `json:"cancelTime,omitempty"`

	// EndTime: The time at which this operation failed or was completed
	// successfully.
	EndTime string `json:"endTime,omitempty"`

	// ExpectedFulfillmentPeriod: The expected fulfillment period of this
	// create operation.
	//
	// Possible values:
	//   "FULFILLMENT_PERIOD_UNSPECIFIED" - Not specified.
	//   "FULFILLMENT_PERIOD_NORMAL" - Normal fulfillment period. The
	// operation is expected to complete within minutes.
	//   "FULFILLMENT_PERIOD_EXTENDED" - Extended fulfillment period. It can
	// take up to an hour for the operation to complete.
	ExpectedFulfillmentPeriod string `json:"expectedFulfillmentPeriod,omitempty"`

	// Instance: The instance being created.
	Instance *Instance `json:"instance,omitempty"`

	// StartTime: The time at which the CreateInstance request was received.
	StartTime string `json:"startTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CancelTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CancelTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateInstancePartitionMetadata struct {
	// CancelTime: The time at which this operation was cancelled. If set,
	// this operation is in the process of undoing itself (which is
	// guaranteed to succeed) and cannot be cancelled again.
	CancelTime string `json:"cancelTime,omitempty"`

	// EndTime: The time at which this operation failed or was completed
	// successfully.
	EndTime string `json:"endTime,omitempty"`

	// InstancePartition: The instance partition being created.
	InstancePartition *InstancePartition `json:"instancePartition,omitempty"`

	// StartTime: The time at which the CreateInstancePartition request was
	// received.
	StartTime string `json:"startTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CancelTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CancelTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateInstancePartitionRequest struct {
	// InstancePartition: Required. The instance partition to create. The
	// instance_partition.name may be omitted, but if specified must be
	// `/instancePartitions/`.
	InstancePartition *InstancePartition `json:"instancePartition,omitempty"`

	// InstancePartitionId: Required. The ID of the instance partition to
	// create. Valid identifiers are of the form `a-z*[a-z0-9]` and must be
	// between 2 and 64 characters in length.
	InstancePartitionId string `json:"instancePartitionId,omitempty"`

	// ForceSendFields is a list of field names (e.g. "InstancePartition")
	// to unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "InstancePartition") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type CreateInstanceRequest struct {
	// Instance: Required. The instance to create. The name may be omitted,
	// but if specified must be `/instances/`.
	Instance *Instance `json:"instance,omitempty"`

	// InstanceId: Required. The ID of the instance to create. Valid
	// identifiers are of the form `a-z*[a-z0-9]` and must be between 2 and
	// 64 characters in length.
	InstanceId string `json:"instanceId,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Instance") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Instance") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type CreateSessionRequest struct {
	// Session: Required. The session to create.
	Session *Session `json:"session,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Session") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Session") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Database struct {
	// CreateTime: Output only. If exists, the time at which the database
	// creation started.
	CreateTime string `json:"createTime,omitempty"`

	// DatabaseDialect: Output only. The dialect of the Cloud Spanner
	// Database.
	//
	// Possible values:
	//   "DATABASE_DIALECT_UNSPECIFIED" - Default value. This value will
	// create a database with the GOOGLE_STANDARD_SQL dialect.
	//   "GOOGLE_STANDARD_SQL" - GoogleSQL supported SQL.
	//   "POSTGRESQL" - PostgreSQL supported SQL.
	DatabaseDialect string `json:"databaseDialect,omitempty"`

	// DefaultLeader: Output only. The read-write region which contains the
	// database's leader replicas. This is the same as the value of
	// default_leader database option set using DatabaseAdmin.CreateDatabase
	// or DatabaseAdmin.UpdateDatabaseDdl. If not explicitly set, this is
	// empty.
	DefaultLeader string `json:"defaultLeader,omitempty"`

	// EarliestVersionTime: Output only. Earliest timestamp at which older
	// versions of the data can be read. This value is continuously updated
	// by Cloud Spanner and becomes stale the moment it is queried. If you
	// are using this value to recover data, make sure to account for the
	// time from the moment when the value is queried to the moment when you
	// initiate the recovery.
	EarliestVersionTime string `json:"earliestVersionTime,omitempty"`

	// EnableDropProtection: Whether drop protection is enabled for this
	// database. Defaults to false, if not set. For more details, please see
	// how to prevent accidental database deletion
	// (https://cloud.google.com/spanner/docs/prevent-database-deletion).
	EnableDropProtection bool `json:"enableDropProtection,omitempty"`

	// EncryptionConfig: Output only. For databases that are using customer
	// managed encryption, this field contains the encryption configuration
	// for the database. For databases that are using Google default or
	// other types of encryption, this field is empty.
	EncryptionConfig *EncryptionConfig `json:"encryptionConfig,omitempty"`

	// EncryptionInfo: Output only. For databases that are using customer
	// managed encryption, this field contains the encryption information
	// for the database, such as all Cloud KMS key versions that are in use.
	// The `encryption_status' field inside of each `EncryptionInfo` is not
	// populated. For databases that are using Google default or other types
	// of encryption, this field is empty. This field is propagated lazily
	// from the backend. There might be a delay from when a key version is
	// being used and when it appears in this field.
	EncryptionInfo []*EncryptionInfo `json:"encryptionInfo,omitempty"`

	// Name: Required. The name of the database. Values are of the form
	// `projects//instances//databases/`, where “ is as specified in the
	// `CREATE DATABASE` statement. This name can be passed to other API
	// methods to identify the database.
	Name string `json:"name,omitempty"`

	// Reconciling: Output only. If true, the database is being updated. If
	// false, there are no ongoing update operations for the database.
	Reconciling bool `json:"reconciling,omitempty"`

	// RestoreInfo: Output only. Applicable only for restored databases.
	// Contains information about the restore source.
	RestoreInfo *RestoreInfo `json:"restoreInfo,omitempty"`

	// State: Output only. The current database state.
	//
	// Possible values:
	//   "STATE_UNSPECIFIED" - Not specified.
	//   "CREATING" - The database is still being created. Operations on the
	// database may fail with `FAILED_PRECONDITION` in this state.
	//   "READY" - The database is fully created and ready for use.
	//   "READY_OPTIMIZING" - The database is fully created and ready for
	// use, but is still being optimized for performance and cannot handle
	// full load. In this state, the database still references the backup it
	// was restore from, preventing the backup from being deleted. When
	// optimizations are complete, the full performance of the database will
	// be restored, and the database will transition to `READY` state.
	State string `json:"state,omitempty"`

	// VersionRetentionPeriod: Output only. The period in which Cloud
	// Spanner retains all versions of data for the database. This is the
	// same as the value of version_retention_period database option set
	// using UpdateDatabaseDdl. Defaults to 1 hour, if not set.
	VersionRetentionPeriod string `json:"versionRetentionPeriod,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "CreateTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "CreateTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type DatabaseRole struct {
	// Name: Required. The name of the database role. Values are of the form
	// `projects//instances//databases//databaseRoles/` where “ is as
	// specified in the `CREATE ROLE` DDL statement.
	Name string `json:"name,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Name") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Name") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type DdlStatementActionInfo struct {
	// Action: The action for the DDL statement, e.g. CREATE, ALTER, DROP,
	// GRANT, etc. This field is a non-empty string.
	Action string `json:"action,omitempty"`

	// EntityNames: The entity name(s) being operated on the DDL statement.
	// E.g. 1. For statement "CREATE TABLE t1(...)", `entity_names` =
	// ["t1"]. 2. For statement "GRANT ROLE r1, r2 ...", `entity_names` =
	// ["r1", "r2"]. 3. For statement "ANALYZE", `entity_names` = [].
	EntityNames []string `json:"entityNames,omitempty"`

	// EntityType: The entity type for the DDL statement, e.g. TABLE, INDEX,
	// VIEW, etc. This field can be empty string for some DDL statement,
	// e.g. for statement "ANALYZE", `entity_type` = "".
	EntityType string `json:"entityType,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Action") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Action") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Delete struct {
	// KeySet: Required. The primary keys of the rows within table to
	// delete. The primary keys must be specified in the order in which they
	// appear in the `PRIMARY KEY()` clause of the table's equivalent DDL
	// statement (the DDL statement used to create the table). Delete is
	// idempotent. The transaction will succeed even if some or all rows do
	// not exist.
	KeySet *KeySet `json:"keySet,omitempty"`

	// Table: Required. The table whose rows will be deleted.
	Table string `json:"table,omitempty"`

	// ForceSendFields is a list of field names (e.g. "KeySet") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "KeySet") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type DerivedMetric struct {
	// Denominator: The name of the denominator metric. e.g. "rows".
	Denominator *LocalizedString `json:"denominator,omitempty"`

	// Numerator: The name of the numerator metric. e.g. "latency".
	Numerator *LocalizedString `json:"numerator,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Denominator") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Denominator") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type DiagnosticMessage struct {
	// Info: Information about this diagnostic information.
	Info *LocalizedString `json:"info,omitempty"`

	// Metric: The metric.
	Metric *LocalizedString `json:"metric,omitempty"`

	// MetricSpecific: Whether this message is specific only for the current
	// metric. By default Diagnostics are shown for all metrics, regardless
	// which metric is the currently selected metric in the UI. However
	// occasionally a metric will generate so many messages that the
	// resulting visual clutter becomes overwhelming. In this case setting
	// this to true, will show the diagnostic messages for that metric only
	// if it is the currently selected metric.
	MetricSpecific bool `json:"metricSpecific,omitempty"`

	// Severity: The severity of the diagnostic message.
	//
	// Possible values:
	//   "SEVERITY_UNSPECIFIED" - Required default value.
	//   "INFO" - Lowest severity level "Info".
	//   "WARNING" - Middle severity level "Warning".
	//   "ERROR" - Severity level signaling an error "Error"
	//   "FATAL" - Severity level signaling a non recoverable error "Fatal"
	Severity string `json:"severity,omitempty"`

	// ShortMessage: The short message.
	ShortMessage *LocalizedString `json:"shortMessage,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Info") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Info") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type DirectedReadOptions struct {
	// ExcludeReplicas: Exclude_replicas indicates that specified replicas
	// should be excluded from serving requests. Spanner will not route
	// requests to the replicas in this list.
	ExcludeReplicas *ExcludeReplicas `json:"excludeReplicas,omitempty"`

	// IncludeReplicas: Include_replicas indicates the order of replicas (as
	// they appear in this list) to process the request. If
	// auto_failover_disabled is set to true and all replicas are exhausted
	// without finding a healthy replica, Spanner will wait for a replica in
	// the list to become available, requests may fail due to
	// `DEADLINE_EXCEEDED` errors.
	IncludeReplicas *IncludeReplicas `json:"includeReplicas,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ExcludeReplicas") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ExcludeReplicas") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type Empty struct {
	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`
}

type EncryptionConfig struct {
	// KmsKeyName: The Cloud KMS key to be used for encrypting and
	// decrypting the database. Values are of the form
	// `projects//locations//keyRings//cryptoKeys/`.
	KmsKeyName string `json:"kmsKeyName,omitempty"`

	// ForceSendFields is a list of field names (e.g. "KmsKeyName") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "KmsKeyName") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type EncryptionInfo struct {
	// EncryptionStatus: Output only. If present, the status of a recent
	// encrypt/decrypt call on underlying data for this database or backup.
	// Regardless of status, data is always encrypted at rest.
	EncryptionStatus *Status `json:"encryptionStatus,omitempty"`

	// EncryptionType: Output only. The type of encryption.
	//
	// Possible values:
	//   "TYPE_UNSPECIFIED" - Encryption type was not specified, though data
	// at rest remains encrypted.
	//   "GOOGLE_DEFAULT_ENCRYPTION" - The data is encrypted at rest with a
	// key that is fully managed by Google. No key version or status will be
	// populated. This is the default state.
	//   "CUSTOMER_MANAGED_ENCRYPTION" - The data is encrypted at rest with
	// a key that is managed by the customer. The active version of the key.
	// `kms_key_version` will be populated, and `encryption_status` may be
	// populated.
	EncryptionType string `json:"encryptionType,omitempty"`

	// KmsKeyVersion: Output only. A Cloud KMS key version that is being
	// used to protect the database or backup.
	KmsKeyVersion string `json:"kmsKeyVersion,omitempty"`

	// ForceSendFields is a list of field names (e.g. "EncryptionStatus") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "EncryptionStatus") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type ExcludeReplicas struct {
	// ReplicaSelections: The directed read replica selector.
	ReplicaSelections []*ReplicaSelection `json:"replicaSelections,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ReplicaSelections")
	// to unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ReplicaSelections") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type ExecuteBatchDmlRequest struct {
	// RequestOptions: Common options for this request.
	RequestOptions *RequestOptions `json:"requestOptions,omitempty"`

	// Seqno: Required. A per-transaction sequence number used to identify
	// this request. This field makes each request idempotent such that if
	// the request is received multiple times, at most one will succeed. The
	// sequence number must be monotonically increasing within the
	// transaction. If a request arrives for the first time with an
	// out-of-order sequence number, the transaction may be aborted. Replays
	// of previously handled requests will yield the same response as the
	// first execution.
	Seqno int64 `json:"seqno,omitempty,string"`

	// Statements: Required. The list of statements to execute in this
	// batch. Statements are executed serially, such that the effects of
	// statement `i` are visible to statement `i+1`. Each statement must be
	// a DML statement. Execution stops at the first failed statement; the
	// remaining statements are not executed. Callers must provide at least
	// one statement.
	Statements []*Statement `json:"statements,omitempty"`

	// Transaction: Required. The transaction to use. Must be a read-write
	// transaction. To protect against replays, single-use transactions are
	// not supported. The caller must either supply an existing transaction
	// ID or begin a new transaction.
	Transaction *TransactionSelector `json:"transaction,omitempty"`

	// ForceSendFields is a list of field names (e.g. "RequestOptions") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "RequestOptions") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type ExecuteBatchDmlResponse struct {
	// ResultSets: One ResultSet for each statement in the request that ran
	// successfully, in the same order as the statements in the request.
	// Each ResultSet does not contain any rows. The ResultSetStats in each
	// ResultSet contain the number of rows modified by the statement. Only
	// the first ResultSet in the response contains valid ResultSetMetadata.
	ResultSets []*ResultSet `json:"resultSets,omitempty"`

	// Status: If all DML statements are executed successfully, the status
	// is `OK`. Otherwise, the error status of the first failed statement.
	Status *Status `json:"status,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "ResultSets") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ResultSets") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ExecuteSqlRequest struct {
	// DataBoostEnabled: If this is for a partitioned query and this field
	// is set to `true`, the request is executed with Spanner Data Boost
	// independent compute resources. If the field is set to `true` but the
	// request does not set `partition_token`, the API returns an
	// `INVALID_ARGUMENT` error.
	DataBoostEnabled bool `json:"dataBoostEnabled,omitempty"`

	// DirectedReadOptions: Directed read options for this request.
	DirectedReadOptions *DirectedReadOptions `json:"directedReadOptions,omitempty"`

	// ParamTypes: It is not always possible for Cloud Spanner to infer the
	// right SQL type from a JSON value. For example, values of type `BYTES`
	// and values of type `STRING` both appear in params as JSON strings. In
	// these cases, `param_types` can be used to specify the exact SQL type
	// for some or all of the SQL statement parameters. See the definition
	// of Type for more information about SQL types.
	ParamTypes map[string]Type `json:"paramTypes,omitempty"`

	// Params: Parameter names and values that bind to placeholders in the
	// SQL string. A parameter placeholder consists of the `@` character
	// followed by the parameter name (for example, `@firstName`). Parameter
	// names must conform to the naming requirements of identifiers as
	// specified at
	// https://cloud.google.com/spanner/docs/lexical#identifiers. Parameters
	// can appear anywhere that a literal value is expected. The same
	// parameter name can be used more than once, for example: "WHERE id >
	// @msg_id AND id < @msg_id + 100" It is an error to execute a SQL
	// statement with unbound parameters.
	Params googleapi.RawMessage `json:"params,omitempty"`

	// PartitionToken: If present, results will be restricted to the
	// specified partition previously created using PartitionQuery(). There
	// must be an exact match for the values of fields common to this
	// message and the PartitionQueryRequest message used to create this
	// partition_token.
	PartitionToken string `json:"partitionToken,omitempty"`

	// QueryMode: Used to control the amount of debugging information
	// returned in ResultSetStats. If partition_token is set, query_mode can
	// only be set to QueryMode.NORMAL.
	//
	// Possible values:
	//   "NORMAL" - The default mode. Only the statement results are
	// returned.
	//   "PLAN" - This mode returns only the query plan, without any results
	// or execution statistics information.
	//   "PROFILE" - This mode returns both the query plan and the execution
	// statistics along with the results.
	QueryMode string `json:"queryMode,omitempty"`

	// QueryOptions: Query optimizer configuration to use for the given
	// query.
	QueryOptions *QueryOptions `json:"queryOptions,omitempty"`

	// RequestOptions: Common options for this request.
	RequestOptions *RequestOptions `json:"requestOptions,omitempty"`

	// ResumeToken: If this request is resuming a previously interrupted SQL
	// statement execution, `resume_token` should be copied from the last
	// PartialResultSet yielded before the interruption. Doing this enables
	// the new SQL statement execution to resume where the last one left
	// off. The rest of the request parameters must exactly match the
	// request that yielded this token.
	ResumeToken string `json:"resumeToken,omitempty"`

	// Seqno: A per-transaction sequence number used to identify this
	// request. This field makes each request idempotent such that if the
	// request is received multiple times, at most one will succeed. The
	// sequence number must be monotonically increasing within the
	// transaction. If a request arrives for the first time with an
	// out-of-order sequence number, the transaction may be aborted. Replays
	// of previously handled requests will yield the same response as the
	// first execution. Required for DML statements. Ignored for queries.
	Seqno int64 `json:"seqno,omitempty,string"`

	// Sql: Required. The SQL string.
	Sql string `json:"sql,omitempty"`

	// Transaction: The transaction to use. For queries, if none is
	// provided, the default is a temporary read-only transaction with
	// strong concurrency. Standard DML statements require a read-write
	// transaction. To protect against replays, single-use transactions are
	// not supported. The caller must either supply an existing transaction
	// ID or begin a new transaction. Partitioned DML requires an existing
	// Partitioned DML transaction ID.
	Transaction *TransactionSelector `json:"transaction,omitempty"`

	// ForceSendFields is a list of field names (e.g. "DataBoostEnabled") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "DataBoostEnabled") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type Expr struct {
	// Description: Optional. Description of the expression. This is a
	// longer text which describes the expression, e.g. when hovered over it
	// in a UI.
	Description string `json:"description,omitempty"`

	// Expression: Textual representation of an expression in Common
	// Expression Language syntax.
	Expression string `json:"expression,omitempty"`

	// Location: Optional. String indicating the location of the expression
	// for error reporting, e.g. a file name and a position in the file.
	Location string `json:"location,omitempty"`

	// Title: Optional. Title for the expression, i.e. a short string
	// describing its purpose. This can be used e.g. in UIs which allow to
	// enter the expression.
	Title string `json:"title,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Description") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Description") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Field struct {
	// Name: The name of the field. For reads, this is the column name. For
	// SQL queries, it is the column alias (e.g., "Word" in the query
	// "SELECT 'hello' AS Word"), or the column name (e.g., "ColName" in
	// the query "SELECT ColName FROM Table"). Some columns might have an
	// empty name (e.g., "SELECT UPPER(ColName)"). Note that a query
	// result can contain multiple fields with the same name.
	Name string `json:"name,omitempty"`

	// Type: The type of the field.
	Type *Type `json:"type,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Name") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Name") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type FreeInstanceMetadata struct {
	// ExpireBehavior: Specifies the expiration behavior of a free instance.
	// The default of ExpireBehavior is `REMOVE_AFTER_GRACE_PERIOD`. This
	// can be modified during or after creation, and before expiration.
	//
	// Possible values:
	//   "EXPIRE_BEHAVIOR_UNSPECIFIED" - Not specified.
	//   "FREE_TO_PROVISIONED" - When the free instance expires, upgrade the
	// instance to a provisioned instance.
	//   "REMOVE_AFTER_GRACE_PERIOD" - When the free instance expires,
	// disable the instance, and delete it after the grace period passes if
	// it has not been upgraded.
	ExpireBehavior string `json:"expireBehavior,omitempty"`

	// ExpireTime: Output only. Timestamp after which the instance will
	// either be upgraded or scheduled for deletion after a grace period.
	// ExpireBehavior is used to choose between upgrading or scheduling the
	// free instance for deletion. This timestamp is set during the creation
	// of a free instance.
	ExpireTime string `json:"expireTime,omitempty"`

	// UpgradeTime: Output only. If present, the timestamp at which the free
	// instance was upgraded to a provisioned instance.
	UpgradeTime string `json:"upgradeTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ExpireBehavior") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ExpireBehavior") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type GetDatabaseDdlResponse struct {
	// ProtoDescriptors: Proto descriptors stored in the database. Contains
	// a protobuf-serialized google.protobuf.FileDescriptorSet
	// (https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/descriptor.proto).
	// For more details, see protobuffer self description
	// (https://developers.google.com/protocol-buffers/docs/techniques#self-description).
	ProtoDescriptors string `json:"protoDescriptors,omitempty"`

	// Statements: A list of formatted DDL statements defining the schema of
	// the database specified in the request.
	Statements []string `json:"statements,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "ProtoDescriptors") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ProtoDescriptors") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type GetIamPolicyRequest struct {
	// Options: OPTIONAL: A `GetPolicyOptions` object for specifying options
	// to `GetIamPolicy`.
	Options *GetPolicyOptions `json:"options,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Options") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Options") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type GetPolicyOptions struct {
	// RequestedPolicyVersion: Optional. The maximum policy version that
	// will be used to format the policy. Valid values are 0, 1, and 3.
	// Requests specifying an invalid value will be rejected. Requests for
	// policies with any conditional role bindings must specify version 3.
	// Policies with no conditional role bindings may specify any valid
	// value or leave the field unset. The policy in the response might use
	// the policy version that you specified, or it might use a lower policy
	// version. For example, if you specify version 3, but the policy has no
	// conditional role bindings, the response uses version 1. To learn
	// which resources support conditions in their IAM policies, see the IAM
	// documentation
	// (https://cloud.google.com/iam/help/conditions/resource-policies).
	RequestedPolicyVersion int64 `json:"requestedPolicyVersion,omitempty"`

	// ForceSendFields is a list of field names (e.g.
	// "RequestedPolicyVersion") to unconditionally include in API requests.
	// By default, fields with empty or default values are omitted from API
	// requests. However, any non-pointer, non-interface field appearing in
	// ForceSendFields will be sent to the server regardless of whether the
	// field is empty or not. This may be used to include empty fields in
	// Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "RequestedPolicyVersion")
	// to include in API requests with the JSON null value. By default,
	// fields with empty values are omitted from API requests. However, any
	// field with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type IncludeReplicas struct {
	// AutoFailoverDisabled: If true, Spanner will not route requests to a
	// replica outside the include_replicas list when all of the specified
	// replicas are unavailable or unhealthy. Default value is `false`.
	AutoFailoverDisabled bool `json:"autoFailoverDisabled,omitempty"`

	// ReplicaSelections: The directed read replica selector.
	ReplicaSelections []*ReplicaSelection `json:"replicaSelections,omitempty"`

	// ForceSendFields is a list of field names (e.g.
	// "AutoFailoverDisabled") to unconditionally include in API requests.
	// By default, fields with empty or default values are omitted from API
	// requests. However, any non-pointer, non-interface field appearing in
	// ForceSendFields will be sent to the server regardless of whether the
	// field is empty or not. This may be used to include empty fields in
	// Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "AutoFailoverDisabled") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type IndexAdvice struct {
	// Ddl: Optional. DDL statements to add new indexes that will improve
	// the query.
	Ddl []string `json:"ddl,omitempty"`

	// ImprovementFactor: Optional. Estimated latency improvement factor.
	// For example if the query currently takes 500 ms to run and the
	// estimated latency with new indexes is 100 ms this field will be 5.
	ImprovementFactor float64 `json:"improvementFactor,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Ddl") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Ddl") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type IndexedHotKey struct {
	// SparseHotKeys: A (sparse) mapping from key bucket index to the index
	// of the specific hot row key for that key bucket. The index of the hot
	// row key can be translated to the actual row key via the
	// ScanData.VisualizationData.indexed_keys repeated field.
	SparseHotKeys map[string]int64 `json:"sparseHotKeys,omitempty"`

	// ForceSendFields is a list of field names (e.g. "SparseHotKeys") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "SparseHotKeys") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type IndexedKeyRangeInfos struct {
	// KeyRangeInfos: A (sparse) mapping from key bucket index to the
	// KeyRangeInfos for that key bucket.
	KeyRangeInfos map[string]KeyRangeInfos `json:"keyRangeInfos,omitempty"`

	// ForceSendFields is a list of field names (e.g. "KeyRangeInfos") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "KeyRangeInfos") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Instance struct {
	// AutoscalingConfig: Optional. The autoscaling configuration.
	// Autoscaling is enabled if this field is set. When autoscaling is
	// enabled, node_count and processing_units are treated as OUTPUT_ONLY
	// fields and reflect the current compute capacity allocated to the
	// instance.
	AutoscalingConfig *AutoscalingConfig `json:"autoscalingConfig,omitempty"`

	// Config: Required. The name of the instance's configuration. Values
	// are of the form `projects//instanceConfigs/`. See also InstanceConfig
	// and ListInstanceConfigs.
	Config string `json:"config,omitempty"`

	// CreateTime: Output only. The time at which the instance was created.
	CreateTime string `json:"createTime,omitempty"`

	// DisplayName: Required. The descriptive name for this instance as it
	// appears in UIs. Must be unique per project and between 4 and 30
	// characters in length.
	DisplayName string `json:"displayName,omitempty"`

	// EndpointUris: Deprecated. This field is not populated.
	EndpointUris []string `json:"endpointUris,omitempty"`

	// FreeInstanceMetadata: Free instance metadata. Only populated for free
	// instances.
	FreeInstanceMetadata *FreeInstanceMetadata `json:"freeInstanceMetadata,omitempty"`

	// InstanceType: The `InstanceType` of the current instance.
	//
	// Possible values:
	//   "INSTANCE_TYPE_UNSPECIFIED" - Not specified.
	//   "PROVISIONED" - Provisioned instances have dedicated resources,
	// standard usage limits and support.
	//   "FREE_INSTANCE" - Free instances provide no guarantee for dedicated
	// resources, [node_count, processing_units] should be 0. They come with
	// stricter usage limits and limited support.
	InstanceType string `json:"instanceType,omitempty"`

	// Labels: Cloud Labels are a flexible and lightweight mechanism for
	// organizing cloud resources into groups that reflect a customer's
	// organizational needs and deployment strategies. Cloud Labels can be
	// used to filter collections of resources. They can be used to control
	// how resource metrics are aggregated. And they can be used as
	// arguments to policy management rules (e.g. route, firewall, load
	// balancing, etc.). * Label keys must be between 1 and 63 characters
	// long and must conform to the following regular expression:
	// `a-z{0,62}`. * Label values must be between 0 and 63 characters long
	// and must conform to the regular expression `[a-z0-9_-]{0,63}`. * No
	// more than 64 labels can be associated with a given resource. See
	// https://goo.gl/xmQnxf for more information on and examples of labels.
	// If you plan to use labels in your own code, please note that
	// additional characters may be allowed in the future. And so you are
	// advised to use an internal label representation, such as JSON, which
	// doesn't rely upon specific characters being disallowed. For example,
	// representing labels as the string: name + "_" + value would prove
	// problematic if we were to allow "_" in a future release.
	Labels map[string]string `json:"labels,omitempty"`

	// Name: Required. A unique identifier for the instance, which cannot be
	// changed after the instance is created. Values are of the form
	// `projects//instances/a-z*[a-z0-9]`. The final segment of the name
	// must be between 2 and 64 characters in length.
	Name string `json:"name,omitempty"`

	// NodeCount: The number of nodes allocated to this instance. At most
	// one of either node_count or processing_units should be present in the
	// message. Users can set the node_count field to specify the target
	// number of nodes allocated to the instance. This may be zero in API
	// responses for instances that are not yet in state `READY`. See the
	// documentation
	// (https://cloud.google.com/spanner/docs/compute-capacity) for more
	// information about nodes and processing units.
	NodeCount int64 `json:"nodeCount,omitempty"`

	// ProcessingUnits: The number of processing units allocated to this
	// instance. At most one of processing_units or node_count should be
	// present in the message. Users can set the processing_units field to
	// specify the target number of processing units allocated to the
	// instance. This may be zero in API responses for instances that are
	// not yet in state `READY`. See the documentation
	// (https://cloud.google.com/spanner/docs/compute-capacity) for more
	// information about nodes and processing units.
	ProcessingUnits int64 `json:"processingUnits,omitempty"`

	// State: Output only. The current instance state. For CreateInstance,
	// the state must be either omitted or set to `CREATING`. For
	// UpdateInstance, the state must be either omitted or set to `READY`.
	//
	// Possible values:
	//   "STATE_UNSPECIFIED" - Not specified.
	//   "CREATING" - The instance is still being created. Resources may not
	// be available yet, and operations such as database creation may not
	// work.
	//   "READY" - The instance is fully created and ready to do work such
	// as creating databases.
	State string `json:"state,omitempty"`

	// UpdateTime: Output only. The time at which the instance was most
	// recently updated.
	UpdateTime string `json:"updateTime,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "AutoscalingConfig")
	// to unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "AutoscalingConfig") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type InstanceConfig struct {
	// BaseConfig: Base configuration name, e.g.
	// projects//instanceConfigs/nam3, based on which this configuration is
	// created. Only set for user managed configurations. `base_config` must
	// refer to a configuration of type GOOGLE_MANAGED in the same project
	// as this configuration.
	BaseConfig string `json:"baseConfig,omitempty"`

	// ConfigType: Output only. Whether this instance config is a Google or
	// User Managed Configuration.
	//
	// Possible values:
	//   "TYPE_UNSPECIFIED" - Unspecified.
	//   "GOOGLE_MANAGED" - Google managed configuration.
	//   "USER_MANAGED" - User managed configuration.
	ConfigType string `json:"configType,omitempty"`

	// DisplayName: The name of this instance configuration as it appears in
	// UIs.
	DisplayName string `json:"displayName,omitempty"`

	// Etag: etag is used for optimistic concurrency control as a way to
	// help prevent simultaneous updates of a instance config from
	// overwriting each other. It is strongly suggested that systems make
	// use of the etag in the read-modify-write cycle to perform instance
	// config updates in order to avoid race conditions: An etag is returned
	// in the response which contains instance configs, and systems are
	// expected to put that etag in the request to update instance config to
	// ensure that their change will be applied to the same version of the
	// instance config. If no etag is provided in the call to update
	// instance config, then the existing instance config is overwritten
	// blindly.
	Etag string `json:"etag,omitempty"`

	// FreeInstanceAvailability: Output only. Describes whether free
	// instances are available to be created in this instance config.
	//
	// Possible values:
	//   "FREE_INSTANCE_AVAILABILITY_UNSPECIFIED" - Not specified.
	//   "AVAILABLE" - Indicates that free instances are available to be
	// created in this instance config.
	//   "UNSUPPORTED" - Indicates that free instances are not supported in
	// this instance config.
	//   "DISABLED" - Indicates that free instances are currently not
	// available to be created in this instance config.
	//   "QUOTA_EXCEEDED" - Indicates that additional free instances cannot
	// be created in this instance config because the project has reached
	// its limit of free instances.
	FreeInstanceAvailability string `json:"freeInstanceAvailability,omitempty"`

	// Labels: Cloud Labels are a flexible and lightweight mechanism for
	// organizing cloud resources into groups that reflect a customer's
	// organizational needs and deployment strategies. Cloud Labels can be
	// used to filter collections of resources. They can be used to control
	// how resource metrics are aggregated. And they can be used as
	// arguments to policy management rules (e.g. route, firewall, load
	// balancing, etc.). * Label keys must be between 1 and 63 characters
	// long and must conform to the following regular expression:
	// `a-z{0,62}`. * Label values must be between 0 and 63 characters long
	// and must conform to the regular expression `[a-z0-9_-]{0,63}`. * No
	// more than 64 labels can be associated with a given resource. See
	// https://goo.gl/xmQnxf for more information on and examples of labels.
	// If you plan to use labels in your own code, please note that
	// additional characters may be allowed in the future. Therefore, you
	// are advised to use an internal label representation, such as JSON,
	// which doesn't rely upon specific characters being disallowed. For
	// example, representing labels as the string: name + "_" + value would
	// prove problematic if we were to allow "_" in a future release.
	Labels map[string]string `json:"labels,omitempty"`

	// LeaderOptions: Allowed values of the "default_leader" schema option
	// for databases in instances that use this instance configuration.
	LeaderOptions []string `json:"leaderOptions,omitempty"`

	// Name: A unique identifier for the instance configuration. Values are
	// of the form `projects//instanceConfigs/a-z*`.
	Name string `json:"name,omitempty"`

	// OptionalReplicas: Output only. The available optional replicas to
	// choose from for user managed configurations. Populated for Google
	// managed configurations.
	OptionalReplicas []*ReplicaInfo `json:"optionalReplicas,omitempty"`

	// Reconciling: Output only. If true, the instance config is being
	// created or updated. If false, there are no ongoing operations for the
	// instance config.
	Reconciling bool `json:"reconciling,omitempty"`

	// Replicas: The geographic placement of nodes in this instance
	// configuration and their replication properties.
	Replicas []*ReplicaInfo `json:"replicas,omitempty"`

	// State: Output only. The current instance config state. Applicable
	// only for USER_MANAGED configs.
	//
	// Possible values:
	//   "STATE_UNSPECIFIED" - Not specified.
	//   "CREATING" - The instance config is still being created.
	//   "READY" - The instance config is fully created and ready to be used
	// to create instances.
	State string `json:"state,omitempty"`

	// StorageLimitPerProcessingUnit: Output only. The storage limit in
	// bytes per processing unit.
	StorageLimitPerProcessingUnit int64 `json:"storageLimitPerProcessingUnit,omitempty,string"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "BaseConfig") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "BaseConfig") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type InstanceOperationProgress struct {
	// EndTime: If set, the time at which this operation failed or was
	// completed successfully.
	EndTime string `json:"endTime,omitempty"`

	// ProgressPercent: Percent completion of the operation. Values are
	// between 0 and 100 inclusive.
	ProgressPercent int64 `json:"progressPercent,omitempty"`

	// StartTime: Time the request was received.
	StartTime string `json:"startTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "EndTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "EndTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type InstancePartition struct {
	// Config: Required. The name of the instance partition's configuration.
	// Values are of the form `projects//instanceConfigs/`. See also
	// InstanceConfig and ListInstanceConfigs.
	Config string `json:"config,omitempty"`

	// CreateTime: Output only. The time at which the instance partition was
	// created.
	CreateTime string `json:"createTime,omitempty"`

	// DisplayName: Required. The descriptive name for this instance
	// partition as it appears in UIs. Must be unique per project and
	// between 4 and 30 characters in length.
	DisplayName string `json:"displayName,omitempty"`

	// Etag: Used for optimistic concurrency control as a way to help
	// prevent simultaneous updates of a instance partition from overwriting
	// each other. It is strongly suggested that systems make use of the
	// etag in the read-modify-write cycle to perform instance partition
	// updates in order to avoid race conditions: An etag is returned in the
	// response which contains instance partitions, and systems are expected
	// to put that etag in the request to update instance partitions to
	// ensure that their change will be applied to the same version of the
	// instance partition. If no etag is provided in the call to update
	// instance partition, then the existing instance partition is
	// overwritten blindly.
	Etag string `json:"etag,omitempty"`

	// Name: Required. A unique identifier for the instance partition.
	// Values are of the form
	// `projects//instances//instancePartitions/a-z*[a-z0-9]`. The final
	// segment of the name must be between 2 and 64 characters in length. An
	// instance partition's name cannot be changed after the instance
	// partition is created.
	Name string `json:"name,omitempty"`

	// NodeCount: The number of nodes allocated to this instance partition.
	// Users can set the node_count field to specify the target number of
	// nodes allocated to the instance partition. This may be zero in API
	// responses for instance partitions that are not yet in state `READY`.
	NodeCount int64 `json:"nodeCount,omitempty"`

	// ProcessingUnits: The number of processing units allocated to this
	// instance partition. Users can set the processing_units field to
	// specify the target number of processing units allocated to the
	// instance partition. This may be zero in API responses for instance
	// partitions that are not yet in state `READY`.
	ProcessingUnits int64 `json:"processingUnits,omitempty"`

	// ReferencingBackups: Output only. The names of the backups that
	// reference this instance partition. Referencing backups should share
	// the parent instance. The existence of any referencing backup prevents
	// the instance partition from being deleted.
	ReferencingBackups []string `json:"referencingBackups,omitempty"`

	// ReferencingDatabases: Output only. The names of the databases that
	// reference this instance partition. Referencing databases should share
	// the parent instance. The existence of any referencing database
	// prevents the instance partition from being deleted.
	ReferencingDatabases []string `json:"referencingDatabases,omitempty"`

	// State: Output only. The current instance partition state.
	//
	// Possible values:
	//   "STATE_UNSPECIFIED" - Not specified.
	//   "CREATING" - The instance partition is still being created.
	// Resources may not be available yet, and operations such as creating
	// placements using this instance partition may not work.
	//   "READY" - The instance partition is fully created and ready to do
	// work such as creating placements and using in databases.
	State string `json:"state,omitempty"`

	// UpdateTime: Output only. The time at which the instance partition was
	// most recently updated.
	UpdateTime string `json:"updateTime,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Config") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Config") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type KeyRange struct {
	// EndClosed: If the end is closed, then the range includes all rows
	// whose first `len(end_closed)` key columns exactly match `end_closed`.
	EndClosed []interface{} `json:"endClosed,omitempty"`

	// EndOpen: If the end is open, then the range excludes rows whose first
	// `len(end_open)` key columns exactly match `end_open`.
	EndOpen []interface{} `json:"endOpen,omitempty"`

	// StartClosed: If the start is closed, then the range includes all rows
	// whose first `len(start_closed)` key columns exactly match
	// `start_closed`.
	StartClosed []interface{} `json:"startClosed,omitempty"`

	// StartOpen: If the start is open, then the range excludes rows whose
	// first `len(start_open)` key columns exactly match `start_open`.
	StartOpen []interface{} `json:"startOpen,omitempty"`

	// ForceSendFields is a list of field names (e.g. "EndClosed") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "EndClosed") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type KeyRangeInfo struct {
	// ContextValues: The list of context values for this key range.
	ContextValues []*ContextValue `json:"contextValues,omitempty"`

	// EndKeyIndex: The index of the end key in indexed_keys.
	EndKeyIndex int64 `json:"endKeyIndex,omitempty"`

	// Info: Information about this key range, for all metrics.
	Info *LocalizedString `json:"info,omitempty"`

	// KeysCount: The number of keys this range covers.
	KeysCount int64 `json:"keysCount,omitempty,string"`

	// Metric: The name of the metric. e.g. "latency".
	Metric *LocalizedString `json:"metric,omitempty"`

	// StartKeyIndex: The index of the start key in indexed_keys.
	StartKeyIndex int64 `json:"startKeyIndex,omitempty"`

	// TimeOffset: The time offset. This is the time since the start of the
	// time interval.
	TimeOffset string `json:"timeOffset,omitempty"`

	// Unit: The unit of the metric. This is an unstructured field and will
	// be mapped as is to the user.
	Unit *LocalizedString `json:"unit,omitempty"`

	// Value: The value of the metric.
	Value float64 `json:"value,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ContextValues") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ContextValues") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type KeyRangeInfos struct {
	// Infos: The list individual KeyRangeInfos.
	Infos []*KeyRangeInfo `json:"infos,omitempty"`

	// TotalSize: The total size of the list of all KeyRangeInfos. This may
	// be larger than the number of repeated messages above. If that is the
	// case, this number may be used to determine how many are not being
	// shown.
	TotalSize int64 `json:"totalSize,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Infos") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Infos") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type KeySet struct {
	// All: For convenience `all` can be set to `true` to indicate that this
	// `KeySet` matches all keys in the table or index. Note that any keys
	// specified in `keys` or `ranges` are only yielded once.
	All bool `json:"all,omitempty"`

	// Keys: A list of specific keys. Entries in `keys` should have exactly
	// as many elements as there are columns in the primary or index key
	// with which this `KeySet` is used. Individual key values are encoded
	// as described here.
	Keys [][]interface{} `json:"keys,omitempty"`

	// Ranges: A list of key ranges. See KeyRange for more information about
	// key range specifications.
	Ranges []*KeyRange `json:"ranges,omitempty"`

	// ForceSendFields is a list of field names (e.g. "All") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "All") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListBackupOperationsResponse struct {
	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListBackupOperations call to fetch more of the matching metadata.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Operations: The list of matching backup long-running operations. Each
	// operation's name will be prefixed by the backup's name. The
	// operation's metadata field type `metadata.type_url` describes the
	// type of the metadata. Operations returned include those that are
	// pending or have completed/failed/canceled within the last 7 days.
	// Operations returned are ordered by
	// `operation.metadata.value.progress.start_time` in descending order
	// starting from the most recently started operation.
	Operations []*Operation `json:"operations,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListBackupsResponse struct {
	// Backups: The list of matching backups. Backups returned are ordered
	// by `create_time` in descending order, starting from the most recent
	// `create_time`.
	Backups []*Backup `json:"backups,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListBackups call to fetch more of the matching backups.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Backups") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Backups") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListDatabaseOperationsResponse struct {
	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListDatabaseOperations call to fetch more of the matching metadata.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Operations: The list of matching database long-running operations.
	// Each operation's name will be prefixed by the database's name. The
	// operation's metadata field type `metadata.type_url` describes the
	// type of the metadata.
	Operations []*Operation `json:"operations,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListDatabaseRolesResponse struct {
	// DatabaseRoles: Database roles that matched the request.
	DatabaseRoles []*DatabaseRole `json:"databaseRoles,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListDatabaseRoles call to fetch more of the matching roles.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "DatabaseRoles") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "DatabaseRoles") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListDatabasesResponse struct {
	// Databases: Databases that matched the request.
	Databases []*Database `json:"databases,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListDatabases call to fetch more of the matching databases.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Databases") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Databases") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListInstanceConfigOperationsResponse struct {
	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListInstanceConfigOperations call to fetch more of the matching
	// metadata.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Operations: The list of matching instance config long-running
	// operations. Each operation's name will be prefixed by the instance
	// config's name. The operation's metadata field type
	// `metadata.type_url` describes the type of the metadata.
	Operations []*Operation `json:"operations,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListInstanceConfigsResponse struct {
	// InstanceConfigs: The list of requested instance configurations.
	InstanceConfigs []*InstanceConfig `json:"instanceConfigs,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListInstanceConfigs call to fetch more of the matching instance
	// configurations.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "InstanceConfigs") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "InstanceConfigs") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type ListInstancePartitionOperationsResponse struct {
	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListInstancePartitionOperations call to fetch more of the matching
	// metadata.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Operations: The list of matching instance partition long-running
	// operations. Each operation's name will be prefixed by the instance
	// partition's name. The operation's metadata field type
	// `metadata.type_url` describes the type of the metadata.
	Operations []*Operation `json:"operations,omitempty"`

	// UnreachableInstancePartitions: The list of unreachable instance
	// partitions. It includes the names of instance partitions whose
	// operation metadata could not be retrieved within
	// instance_partition_deadline.
	UnreachableInstancePartitions []string `json:"unreachableInstancePartitions,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListInstancePartitionsResponse struct {
	// InstancePartitions: The list of requested instancePartitions.
	InstancePartitions []*InstancePartition `json:"instancePartitions,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListInstancePartitions call to fetch more of the matching instance
	// partitions.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Unreachable: The list of unreachable instance partitions. It includes
	// the names of instance partitions whose metadata could not be
	// retrieved within instance_partition_deadline.
	Unreachable []string `json:"unreachable,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "InstancePartitions")
	// to unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "InstancePartitions") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type ListInstancesResponse struct {
	// Instances: The list of requested instances.
	Instances []*Instance `json:"instances,omitempty"`

	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListInstances call to fetch more of the matching instances.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Unreachable: The list of unreachable instances. It includes the names
	// of instances whose metadata could not be retrieved within
	// instance_deadline.
	Unreachable []string `json:"unreachable,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Instances") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Instances") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListOperationsResponse struct {
	// NextPageToken: The standard List next-page token.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Operations: A list of operations that matches the specified filter in
	// the request.
	Operations []*Operation `json:"operations,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListScansResponse struct {
	// NextPageToken: Token to retrieve the next page of results, or empty
	// if there are no more results in the list.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Scans: Available scans based on the list query parameters.
	Scans []*Scan `json:"scans,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type ListSessionsResponse struct {
	// NextPageToken: `next_page_token` can be sent in a subsequent
	// ListSessions call to fetch more of the matching sessions.
	NextPageToken string `json:"nextPageToken,omitempty"`

	// Sessions: The list of requested sessions.
	Sessions []*Session `json:"sessions,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "NextPageToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "NextPageToken") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type LocalizedString struct {
	// Args: A map of arguments used when creating the localized message.
	// Keys represent parameter names which may be used by the localized
	// version when substituting dynamic values.
	Args map[string]string `json:"args,omitempty"`

	// Message: The canonical English version of this message. If no token
	// is provided or the front-end has no message associated with the
	// token, this text will be displayed as-is.
	Message string `json:"message,omitempty"`

	// Token: The token identifying the message, e.g. 'METRIC_READ_CPU'.
	// This should be unique within the service.
	Token string `json:"token,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Args") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Args") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Metric struct {
	// Aggregation: The aggregation function used to aggregate each key
	// bucket
	//
	// Possible values:
	//   "AGGREGATION_UNSPECIFIED" - Required default value.
	//   "MAX" - Use the maximum of all values.
	//   "SUM" - Use the sum of all values.
	Aggregation string `json:"aggregation,omitempty"`

	// Category: The category of the metric, e.g. "Activity", "Alerts",
	// "Reads", etc.
	Category *LocalizedString `json:"category,omitempty"`

	// Derived: The references to numerator and denominator metrics for a
	// derived metric.
	Derived *DerivedMetric `json:"derived,omitempty"`

	// DisplayLabel: The displayed label of the metric.
	DisplayLabel *LocalizedString `json:"displayLabel,omitempty"`

	// HasNonzeroData: Whether the metric has any non-zero data.
	HasNonzeroData bool `json:"hasNonzeroData,omitempty"`

	// HotValue: The value that is considered hot for the metric. On a per
	// metric basis hotness signals high utilization and something that
	// might potentially be a cause for concern by the end user. hot_value
	// is used to calibrate and scale visual color scales.
	HotValue float64 `json:"hotValue,omitempty"`

	// IndexedHotKeys: The (sparse) mapping from time index to an
	// IndexedHotKey message, representing those time intervals for which
	// there are hot keys.
	IndexedHotKeys map[string]IndexedHotKey `json:"indexedHotKeys,omitempty"`

	// IndexedKeyRangeInfos: The (sparse) mapping from time interval index
	// to an IndexedKeyRangeInfos message, representing those time intervals
	// for which there are informational messages concerning key ranges.
	IndexedKeyRangeInfos map[string]IndexedKeyRangeInfos `json:"indexedKeyRangeInfos,omitempty"`

	// Info: Information about the metric.
	Info *LocalizedString `json:"info,omitempty"`

	// Matrix: The data for the metric as a matrix.
	Matrix *MetricMatrix `json:"matrix,omitempty"`

	// Unit: The unit of the metric.
	Unit *LocalizedString `json:"unit,omitempty"`

	// Visible: Whether the metric is visible to the end user.
	Visible bool `json:"visible,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Aggregation") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Aggregation") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type MetricMatrix struct {
	// Rows: The rows of the matrix.
	Rows []*MetricMatrixRow `json:"rows,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Rows") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Rows") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type MetricMatrixRow struct {
	// Cols: The columns of the row.
	Cols []float64 `json:"cols,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Cols") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Cols") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type MoveInstanceRequest struct {
	// TargetConfig: Required. The target instance config for the instance
	// to move. Values are of the form `projects//instanceConfigs/`.
	TargetConfig string `json:"targetConfig,omitempty"`

	// ForceSendFields is a list of field names (e.g. "TargetConfig") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "TargetConfig") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Mutation struct {
	// Delete: Delete rows from a table. Succeeds whether or not the named
	// rows were present.
	Delete *Delete `json:"delete,omitempty"`

	// Insert: Insert new rows in a table. If any of the rows already exist,
	// the write or transaction fails with error `ALREADY_EXISTS`.
	Insert *Write `json:"insert,omitempty"`

	// InsertOrUpdate: Like insert, except that if the row already exists,
	// then its column values are overwritten with the ones provided. Any
	// column values not explicitly written are preserved. When using
	// insert_or_update, just as when using insert, all `NOT NULL` columns
	// in the table must be given a value. This holds true even when the row
	// already exists and will therefore actually be updated.
	InsertOrUpdate *Write `json:"insertOrUpdate,omitempty"`

	// Replace: Like insert, except that if the row already exists, it is
	// deleted, and the column values provided are inserted instead. Unlike
	// insert_or_update, this means any values not explicitly written become
	// `NULL`. In an interleaved table, if you create the child table with
	// the `ON DELETE CASCADE` annotation, then replacing a parent row also
	// deletes the child rows. Otherwise, you must delete the child rows
	// before you replace the parent row.
	Replace *Write `json:"replace,omitempty"`

	// Update: Update existing rows in a table. If any of the rows does not
	// already exist, the transaction fails with error `NOT_FOUND`.
	Update *Write `json:"update,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Delete") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Delete") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type MutationGroup struct {
	// Mutations: Required. The mutations in this group.
	Mutations []*Mutation `json:"mutations,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Mutations") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Mutations") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Operation struct {
	// Done: If the value is `false`, it means the operation is still in
	// progress. If `true`, the operation is completed, and either `error`
	// or `response` is available.
	Done bool `json:"done,omitempty"`

	// Error: The error result of the operation in case of failure or
	// cancellation.
	Error *Status `json:"error,omitempty"`

	// Metadata: Service-specific metadata associated with the operation. It
	// typically contains progress information and common metadata such as
	// create time. Some services might not provide such metadata. Any
	// method that returns a long-running operation should document the
	// metadata type, if any.
	Metadata googleapi.RawMessage `json:"metadata,omitempty"`

	// Name: The server-assigned name, which is only unique within the same
	// service that originally returns it. If you use the default HTTP
	// mapping, the `name` should be a resource name ending with
	// `operations/{unique_id}`.
	Name string `json:"name,omitempty"`

	// Response: The normal, successful response of the operation. If the
	// original method returns no data on success, such as `Delete`, the
	// response is `google.protobuf.Empty`. If the original method is
	// standard `Get`/`Create`/`Update`, the response should be the
	// resource. For other methods, the response should have the type
	// `XxxResponse`, where `Xxx` is the original method name. For example,
	// if the original method name is `TakeSnapshot()`, the inferred
	// response type is `TakeSnapshotResponse`.
	Response googleapi.RawMessage `json:"response,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "Done") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Done") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type OperationProgress struct {
	// EndTime: If set, the time at which this operation failed or was
	// completed successfully.
	EndTime string `json:"endTime,omitempty"`

	// ProgressPercent: Percent completion of the operation. Values are
	// between 0 and 100 inclusive.
	ProgressPercent int64 `json:"progressPercent,omitempty"`

	// StartTime: Time the request was received.
	StartTime string `json:"startTime,omitempty"`

	// ForceSendFields is a list of field names (e.g. "EndTime") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "EndTime") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type OptimizeRestoredDatabaseMetadata struct {
	// Name: Name of the restored database being optimized.
	Name string `json:"name,omitempty"`

	// Progress: The progress of the post-restore optimizations.
	Progress *OperationProgress `json:"progress,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Name") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Name") to include in API
	// requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type PartialResultSet struct {
	// ChunkedValue: If true, then the final value in values is chunked, and
	// must be combined with more values from subsequent `PartialResultSet`s
	// to obtain a complete field value.
	ChunkedValue bool `json:"chunkedValue,omitempty"`

	// Metadata: Metadata about the result set, such as row type
	// information. Only present in the first response.
	Metadata *ResultSetMetadata `json:"metadata,omitempty"`

	// ResumeToken: Streaming calls might be interrupted for a variety of
	// reasons, such as TCP connection loss. If this occurs, the stream of
	// results can be resumed by re-sending the original request and
	// including `resume_token`. Note that executing any other transaction
	// in the same session invalidates the token.
	ResumeToken string `json:"resumeToken,omitempty"`

	// Stats: Query plan and execution statistics for the statement that
	// produced this streaming result set. These can be requested by setting
	// ExecuteSqlRequest.query_mode and are sent only once with the last
	// response in the stream. This field will also be present in the last
	// response for DML statements.
	Stats *ResultSetStats `json:"stats,omitempty"`

	// Values: A streamed result set consists of a stream of values, which
	// might be split into many `PartialResultSet` messages to accommodate
	// large rows and/or large values. Every N complete values defines a
	// row, where N is equal to the number of entries in
	// metadata.row_type.fields. Most values are encoded based on type as
	// described here. It is possible that the last value in values is
	// "chunked", meaning that the rest of the value is sent in subsequent
	// `PartialResultSet`(s). This is denoted by the chunked_value field.
	// Two or more chunked values can be merged to form a complete value as
	// follows: * `bool/number/null`: cannot be chunked * `string`:
	// concatenate the strings * `list`: concatenate the lists. If the last
	// element in a list is a `string`, `list`, or `object`, merge it with
	// the first element in the next list by applying these rules
	// recursively. * `object`: concatenate the (field name, field value)
	// pairs. If a field name is duplicated, then apply these rules
	// recursively to merge the field values. Some examples of merging: #
	// Strings are concatenated. "foo", "bar" => "foobar" # Lists of
	// non-strings are concatenated. [2, 3], [4] => [2, 3, 4] # Lists are
	// concatenated, but the last and first elements are merged # because
	// they are strings. ["a", "b"], ["c", "d"] => ["a", "bc", "d"] # Lists
	// are concatenated, but the last and first elements are merged #
	// because they are lists. Recursively, the last and first elements # of
	// the inner lists are merged because they are strings. ["a", ["b",
	// "c"]], [["d"], "e"] => ["a", ["b", "cd"], "e"] # Non-overlapping
	// object fields are combined. {"a": "1"}, {"b": "2"} => {"a": "1", "b":
	// 2"} # Overlapping object fields are merged. {"a": "1"}, {"a": "2"} =>
	// {"a": "12"} # Examples of merging objects containing lists of
	// strings. {"a": ["1"]}, {"a": ["2"]} => {"a": ["12"]} For a more
	// complete example, suppose a streaming SQL query is yielding a result
	// set whose rows contain a single string field. The following
	// `PartialResultSet`s might be yielded: { "metadata": { ... } "values":
	// ["Hello", "W"] "chunked_value": true "resume_token": "Af65..." } {
	// "values": ["orl"] "chunked_value": true } { "values": ["d"]
	// "resume_token": "Zx1B..." } This sequence of `PartialResultSet`s
	// encodes two rows, one containing the field value "Hello", and a
	// second containing the field value "World" = "W" + "orl" + "d". Not
	// all `PartialResultSet`s contain a `resume_token`. Execution can only
	// be resumed from a previously yielded `resume_token`. For the above
	// sequence of `PartialResultSet`s, resuming the query with
	// "resume_token": "Af65..." will yield results from the
	// `PartialResultSet` with value `["orl"]`.
	Values []interface{} `json:"values,omitempty"`

	// ServerResponse contains the HTTP response code and headers from the
	// server.
	googleapi.ServerResponse `json:"-"`

	// ForceSendFields is a list of field names (e.g. "ChunkedValue") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ChunkedValue") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type Partition struct {
	// PartitionToken: This token can be passed to Read, StreamingRead,
	// ExecuteSql, or ExecuteStreamingSql requests to restrict the results
	// to those identified by this partition token.
	PartitionToken string `json:"partitionToken,omitempty"`

	// ForceSendFields is a list of field names (e.g. "PartitionToken") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "PartitionToken") to
	// include in API requests with the JSON null value. By default, fields
	// with empty values are omitted from API requests. However, any field
	// with an empty value appearing in NullFields will be sent to the
	// server as null. It is an error if a field in this list has a
	// non-empty value. This may be used to include null fields in Patch
	// requests.
	NullFields []string `json:"-"`
}

type PartitionOptions struct {
	// MaxPartitions: **Note:** This hint is currently ignored by
	// PartitionQuery and PartitionRead requests. The desired maximum number
	// of partitions to return. For example, this may be set to the number
	// of workers available. The default for this option is currently
	// 10,000. The maximum value is currently 200,000. This is only a hint.
	// The actual number of partitions returned may be smaller or larger
	// than this maximum count request.
	MaxPartitions int64 `json:"maxPartitions,omitempty,string"`

	// PartitionSizeBytes: **Note:** This hint is currently ignored by
	// PartitionQuery and PartitionRead requests. The desired data size for
	// each partition generated. The default for this option is currently 1
	// GiB. This is only a hint. The actual size of each partition may be
	// smaller or larger than this size request.
	PartitionSizeBytes int64 `json:"partitionSizeBytes,omitempty,string"`

	// ForceSendFields is a list of field names (e.g. "MaxPartitions") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "MaxPartitions") to include
	// in API requests with the JSON null value. By default, fields with
	// empty values are omitted from API requests. However, any field with
	// an empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type PartitionQueryRequest struct {
	// ParamTypes: It is not always possible for Cloud Spanner to infer the
	// right SQL type from a JSON value. For example, values of type `BYTES`
	// and values of type `STRING` both appear in params as JSON strings. In
	// these cases, `param_types` can be used to specify the exact SQL type
	// for some or all of the SQL query parameters. See the definition of
	// Type for more information about SQL types.
	ParamTypes map[string]Type `json:"paramTypes,omitempty"`

	// Params: Parameter names and values that bind to placeholders in the
	// SQL string. A parameter placeholder consists of the `@` character
	// followed by the parameter name (for example, `@firstName`). Parameter
	// names can contain letters, numbers, and underscores. Parameters can
	// appear anywhere that a literal value is expected. The same parameter
	// name can be used more than once, for example: "WHERE id > @msg_id
	// AND id < @msg_id + 100" It is an error to execute a SQL statement
	// with unbound parameters.
	Params googleapi.RawMessage `json:"params,omitempty"`

	// PartitionOptions: Additional options that affect how many partitions
	// are created.
	PartitionOptions *PartitionOptions `json:"partitionOptions,omitempty"`

	// Sql: Required. The query request to generate partitions for. The
	// request will fail if the query is not root partitionable. For a query
	// to be root partitionable, it needs to satisfy a few conditions. For
	// example, if the query execution plan contains a distributed union
	// operator, then it must be the first operator in the plan. For more
	// information about other conditions, see Read data in parallel
	// (https://cloud.google.com/spanner/docs/reads#read_data_in_parallel).
	// The query request must not contain DML commands, such as INSERT,
	// UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml
	// transaction for large, partition-friendly DML operations.
	Sql string `json:"sql,omitempty"`

	// Transaction: Read only snapshot transactions are supported,
	// read/write and single use transactions are not.
	Transaction *TransactionSelector `json:"transaction,omitempty"`

	// ForceSendFields is a list of field names (e.g. "ParamTypes") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "ParamTypes") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}

type PartitionReadRequest struct {
	// Columns: The columns of table to be returned for each row matching
	// this request.
	Columns []string `json:"columns,omitempty"`

	// Index: If non-empty, the name of an index on table. This index is
	// used instead of the table primary key when interpreting key_set and
	// sorting result rows. See key_set for further information.
	Index string `json:"index,omitempty"`

	// KeySet: Required. `key_set` identifies the rows to be yielded.
	// `key_set` names the primary keys of the rows in table to be yielded,
	// unless index is present. If index is present, then key_set instead
	// names index keys in index. It is not an error for the `key_set` to
	// name rows that do not exist in the database. Read yields nothing for
	// nonexistent rows.
	KeySet *KeySet `json:"keySet,omitempty"`

	// PartitionOptions: Additional options that affect how many partitions
	// are created.
	PartitionOptions *PartitionOptions `json:"partitionOptions,omitempty"`

	// Table: Required. The name of the table in the database to be read.
	Table string `json:"table,omitempty"`

	// Transaction: Read only snapshot transactions are supported,
	// read/write and single use transactions are not.
	Transaction *TransactionSelector `json:"transaction,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Columns") to
	// unconditionally include in API requests. By default, fields with
	// empty or default values are omitted from API requests. However, any
	// non-pointer, non-interface field appearing in ForceSendFields will be
	// sent to the server regardless of whether the field is empty or not.
	// This may be used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`

	// NullFields is a list of field names (e.g. "Columns") to include in
	// API requests with the JSON null value. By default, fields with empty
	// values are omitted from API requests. However, any field with an
	// empty value appearing in NullFields will be sent to the server as
	// null. It is an error if a field in this list has a non-empty value.
	// This may be used to include null fields in Patch requests.
	NullFields []string `json:"-"`
}