Documentation
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Index ¶
- func ControllerDialOpts() api.DialOpts
- func ExportModel(st StateExporter) ([]byte, error)
- func ImportModel(st *state.State, bytes []byte) (*state.Model, *state.State, error)
- func SourcePrecheck(backend PrecheckBackend) error
- func TargetPrecheck(backend PrecheckBackend, modelInfo coremigration.ModelInfo) error
- func UploadBinaries(config UploadBinariesConfig) error
- type CharmDownloader
- type CharmUploader
- type PrecheckApplication
- type PrecheckBackend
- type PrecheckBackendCloser
- type PrecheckMachine
- type PrecheckModel
- type PrecheckUnit
- type ResourceDownloader
- type ResourceUploader
- type StateExporter
- type ToolsDownloader
- type ToolsUploader
- type UploadBinariesConfig
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func ControllerDialOpts ¶
ControllerDialOpts returns dial parameters suitable for connecting from the source controller to the target controller during model migrations. The total attempt time can't be too long because the areas of the code which make these connections need to be interruptable but a number of retries is useful to deal with short lived issues.
func ExportModel ¶
func ExportModel(st StateExporter) ([]byte, error)
ExportModel creates a description.Model representation of the active model for StateExporter (typically a *state.State), and returns the serialized version. It provides the symmetric functionality to ImportModel.
func ImportModel ¶
ImportModel deserializes a model description from the bytes, transforms the model config based on information from the controller model, and then imports that as a new database model.
func SourcePrecheck ¶
func SourcePrecheck(backend PrecheckBackend) error
SourcePrecheck checks the state of the source controller to make sure that the preconditions for model migration are met. The backend provided must be for the model to be migrated.
func TargetPrecheck ¶
func TargetPrecheck(backend PrecheckBackend, modelInfo coremigration.ModelInfo) error
TargetPrecheck checks the state of the target controller to make sure that the preconditions for model migration are met. The backend provided must be for the target controller.
func UploadBinaries ¶
func UploadBinaries(config UploadBinariesConfig) error
UploadBinaries will send binaries stored in the source blobstore to the target controller.
Types ¶
type CharmDownloader ¶
type CharmDownloader interface {
OpenCharm(*charm.URL) (io.ReadCloser, error)
}
CharmDownlaoder defines a single method that is used to download a charm from the source controller in a migration.
type CharmUploader ¶
type CharmUploader interface {
UploadCharm(*charm.URL, io.ReadSeeker) (*charm.URL, error)
}
CharmUploader defines a single method that is used to upload a charm to the target controller in a migration.
type PrecheckApplication ¶
type PrecheckApplication interface {
Name() string
Life() state.Life
CharmURL() (*charm.URL, bool)
AllUnits() ([]PrecheckUnit, error)
MinUnits() int
}
PrecheckApplication describes the state interface for an application needed by migration prechecks.
type PrecheckBackend ¶
type PrecheckBackend interface {
AgentVersion() (version.Number, error)
NeedsCleanup() (bool, error)
Model() (PrecheckModel, error)
AllModels() ([]PrecheckModel, error)
IsUpgrading() (bool, error)
IsMigrationActive(string) (bool, error)
AllMachines() ([]PrecheckMachine, error)
AllApplications() ([]PrecheckApplication, error)
ControllerBackend() (PrecheckBackendCloser, error)
CloudCredential(tag names.CloudCredentialTag) (cloud.Credential, error)
ListPendingResources(string) ([]resource.Resource, error)
}
PrecheckBackend defines the interface to query Juju's state for migration prechecks.
func PrecheckShim ¶
func PrecheckShim(st *state.State) (PrecheckBackend, error)
PrecheckShim wraps a *state.State to implement PrecheckBackend.
type PrecheckBackendCloser ¶
type PrecheckBackendCloser interface {
PrecheckBackend
Close() error
}
PrecheckBackendCloser adds the Close method to the standard PrecheckBackend.
type PrecheckMachine ¶
type PrecheckMachine interface {
Id() string
AgentTools() (*tools.Tools, error)
Life() state.Life
Status() (status.StatusInfo, error)
AgentPresence() (bool, error)
InstanceStatus() (status.StatusInfo, error)
ShouldRebootOrShutdown() (state.RebootAction, error)
}
PrecheckMachine describes the state interface for a machine needed by migration prechecks.
type PrecheckModel ¶
type PrecheckModel interface {
UUID() string
Name() string
Owner() names.UserTag
Life() state.Life
MigrationMode() state.MigrationMode
CloudCredential() (names.CloudCredentialTag, bool)
}
PrecheckModel describes the state interface a model as needed by the migration prechecks.
type PrecheckUnit ¶
type PrecheckUnit interface {
Name() string
AgentTools() (*tools.Tools, error)
Life() state.Life
CharmURL() (*charm.URL, bool)
AgentStatus() (status.StatusInfo, error)
Status() (status.StatusInfo, error)
AgentPresence() (bool, error)
}
PrecheckUnit describes state interface for a unit needed by migration prechecks.
type ResourceDownloader ¶
type ResourceDownloader interface {
OpenResource(string, string) (io.ReadCloser, error)
}
ResourceDownloader defines the interface for downloading resources from the source controller during a migration.
type ResourceUploader ¶
type ResourceUploader interface {
UploadResource(resource.Resource, io.ReadSeeker) error
SetPlaceholderResource(resource.Resource) error
SetUnitResource(string, resource.Resource) error
}
ResourceUploader defines the interface for uploading resources into the target controller during a migration.
type StateExporter ¶
type StateExporter interface {
// Export generates an abstract representation of a model.
Export() (description.Model, error)
}
StateExporter describes interface on state required to export a model.
type ToolsDownloader ¶
ToolsDownloader defines a single method that is used to download tools from the source controller in a migration.
type ToolsUploader ¶
type ToolsUploader interface {
UploadTools(io.ReadSeeker, version.Binary, ...string) (tools.List, error)
}
ToolsUploader defines a single method that is used to upload tools to the target controller in a migration.
type UploadBinariesConfig ¶
type UploadBinariesConfig struct {
Charms []string
CharmDownloader CharmDownloader
CharmUploader CharmUploader
Tools map[version.Binary]string
ToolsDownloader ToolsDownloader
ToolsUploader ToolsUploader
Resources []migration.SerializedModelResource
ResourceDownloader ResourceDownloader
ResourceUploader ResourceUploader
}
UploadBinariesConfig provides all the configuration that the UploadBinaries function needs to operate. To construct the config with the default helper functions, use `NewUploadBinariesConfig`.
func (*UploadBinariesConfig) Validate ¶
func (c *UploadBinariesConfig) Validate() error
Validate makes sure that all the config values are non-nil.
Source Files