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state.go
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state.go
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// Copyright 2014 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package storageprovisioner
import (
"github.com/juju/errors"
"github.com/juju/names"
"github.com/juju/juju/instance"
"github.com/juju/juju/state"
)
type provisionerState interface {
state.EntityFinder
state.EnvironAccessor
MachineInstanceId(names.MachineTag) (instance.Id, error)
BlockDevices(names.MachineTag) ([]state.BlockDeviceInfo, error)
WatchBlockDevices(names.MachineTag) state.NotifyWatcher
WatchMachine(names.MachineTag) (state.NotifyWatcher, error)
WatchEnvironFilesystems() state.StringsWatcher
WatchEnvironFilesystemAttachments() state.StringsWatcher
WatchMachineFilesystems(names.MachineTag) state.StringsWatcher
WatchMachineFilesystemAttachments(names.MachineTag) state.StringsWatcher
WatchEnvironVolumes() state.StringsWatcher
WatchEnvironVolumeAttachments() state.StringsWatcher
WatchMachineVolumes(names.MachineTag) state.StringsWatcher
WatchMachineVolumeAttachments(names.MachineTag) state.StringsWatcher
WatchVolumeAttachment(names.MachineTag, names.VolumeTag) state.NotifyWatcher
StorageInstance(names.StorageTag) (state.StorageInstance, error)
Filesystem(names.FilesystemTag) (state.Filesystem, error)
FilesystemAttachment(names.MachineTag, names.FilesystemTag) (state.FilesystemAttachment, error)
Volume(names.VolumeTag) (state.Volume, error)
VolumeAttachment(names.MachineTag, names.VolumeTag) (state.VolumeAttachment, error)
VolumeAttachments(names.VolumeTag) ([]state.VolumeAttachment, error)
RemoveFilesystem(names.FilesystemTag) error
RemoveFilesystemAttachment(names.MachineTag, names.FilesystemTag) error
RemoveVolume(names.VolumeTag) error
RemoveVolumeAttachment(names.MachineTag, names.VolumeTag) error
SetFilesystemInfo(names.FilesystemTag, state.FilesystemInfo) error
SetFilesystemAttachmentInfo(names.MachineTag, names.FilesystemTag, state.FilesystemAttachmentInfo) error
SetVolumeInfo(names.VolumeTag, state.VolumeInfo) error
SetVolumeAttachmentInfo(names.MachineTag, names.VolumeTag, state.VolumeAttachmentInfo) error
}
type stateShim struct {
*state.State
}
func (s stateShim) MachineInstanceId(tag names.MachineTag) (instance.Id, error) {
m, err := s.Machine(tag.Id())
if err != nil {
return "", errors.Trace(err)
}
return m.InstanceId()
}
func (s stateShim) WatchMachine(tag names.MachineTag) (state.NotifyWatcher, error) {
m, err := s.Machine(tag.Id())
if err != nil {
return nil, errors.Trace(err)
}
return m.Watch(), nil
}