type Configuration struct {
    MaxVersions          uint32             `protobuf:"varint,1,opt,name=max_versions,json=maxVersions,proto3" json:"max_versions,omitempty"`
    CasRequired          bool               `protobuf:"varint,2,opt,name=cas_required,json=casRequired,proto3" json:"cas_required,omitempty"`
    DeleteVersionAfter   *duration.Duration `protobuf:"bytes,3,opt,name=delete_version_after,json=deleteVersionAfter,proto3" json:"delete_version_after,omitempty"`
    XXX_NoUnkeyedLiteral struct{}           `json:"-"`
    XXX_unrecognized     []byte             `json:"-"`
    XXX_sizecache        int32              `json:"-"`
}

type KeyMetadata struct {
    // Key is the key for this entry
    Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
    // Versions is the map of versionID -> VersionMetadata.
    // Useful when listing all versions.
    Versions map[uint64]*VersionMetadata `protobuf:"bytes,2,rep,name=versions,proto3" json:"versions,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
    // CurrentVersion is the latest version of the value
    CurrentVersion uint64 `protobuf:"varint,3,opt,name=current_version,json=currentVersion,proto3" json:"current_version,omitempty"`
    // OldestVersion is the oldest version of the value.
    OldestVersion uint64 `protobuf:"varint,4,opt,name=oldest_version,json=oldestVersion,proto3" json:"oldest_version,omitempty"`
    // Created time is when the metadata was created.
    CreatedTime *timestamp.Timestamp `protobuf:"bytes,5,opt,name=created_time,json=createdTime,proto3" json:"created_time,omitempty"`
    // Updated time was the last time the metadata version
    // was updated.
    UpdatedTime *timestamp.Timestamp `protobuf:"bytes,6,opt,name=updated_time,json=updatedTime,proto3" json:"updated_time,omitempty"`
    // MaxVersions specifies how many versions to keep around.
    // If empty value, defaults to the configured Max
    // for the mount.
    MaxVersions uint32 `protobuf:"varint,7,opt,name=max_versions,json=maxVersions,proto3" json:"max_versions,omitempty"`
    // CasRequired specifies if the cas parameter is
    // required for this key
    CasRequired bool `protobuf:"varint,8,opt,name=cas_required,json=casRequired,proto3" json:"cas_required,omitempty"`
    // DeleteVersionAfter specifies how long to keep versions around. If
    // empty value, defaults to the configured delete_version_after for the
    // mount.
    DeleteVersionAfter   *duration.Duration `protobuf:"bytes,9,opt,name=delete_version_after,json=deleteVersionAfter,proto3" json:"delete_version_after,omitempty"`
    XXX_NoUnkeyedLiteral struct{}           `json:"-"`
    XXX_unrecognized     []byte             `json:"-"`
    XXX_sizecache        int32              `json:"-"`
}

type Passthrough interface {
    // contains filtered or unexported methods
}

type PassthroughBackend struct {
    *framework.Backend
    // contains filtered or unexported fields
}

type UpgradeInfo struct {
    // Started time is when the upgrade was started.
    StartedTime *timestamp.Timestamp `protobuf:"bytes,1,opt,name=started_time,json=startedTime,proto3" json:"started_time,omitempty"`
    // done is set to true once the backend has been successfully
    // upgraded.
    Done                 bool     `protobuf:"varint,2,opt,name=done,proto3" json:"done,omitempty"`
    XXX_NoUnkeyedLiteral struct{} `json:"-"`
    XXX_unrecognized     []byte   `json:"-"`
    XXX_sizecache        int32    `json:"-"`
}

type Version struct {
    // Data is a JSON object with string keys that
    // represents the user supplied data.
    Data []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
    // CreatedTime is when the version was created.
    CreatedTime *timestamp.Timestamp `protobuf:"bytes,2,opt,name=created_time,json=createdTime,proto3" json:"created_time,omitempty"`
    // DeletionTime is the time this version becomes invalid.
    // Set to Now() to delete the version before the configured
    // deletion time.
    DeletionTime         *timestamp.Timestamp `protobuf:"bytes,3,opt,name=deletion_time,json=deletionTime,proto3" json:"deletion_time,omitempty"`
    XXX_NoUnkeyedLiteral struct{}             `json:"-"`
    XXX_unrecognized     []byte               `json:"-"`
    XXX_sizecache        int32                `json:"-"`
}

type VersionMetadata struct {
    // CreatedTime is when the version was created.
    CreatedTime *timestamp.Timestamp `protobuf:"bytes,1,opt,name=created_time,json=createdTime,proto3" json:"created_time,omitempty"`
    // DeletionTime is the time this version becomes invalid.
    // Set to Now() to delete the version before the configured
    // delete time.
    DeletionTime *timestamp.Timestamp `protobuf:"bytes,2,opt,name=deletion_time,json=deletionTime,proto3" json:"deletion_time,omitempty"`
    // Destroyed is used to specify this version is
    // a has been removed and the underlying data deleted.
    Destroyed            bool     `protobuf:"varint,3,opt,name=destroyed,proto3" json:"destroyed,omitempty"`
    XXX_NoUnkeyedLiteral struct{} `json:"-"`
    XXX_unrecognized     []byte   `json:"-"`
    XXX_sizecache        int32    `json:"-"`
}