github.com/axw/juju@v0.0.0-20161005053422-4bd6544d08d4/apiserver/imagemetadata/state.go (about)

     1  // Copyright 2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package imagemetadata
     5  
     6  import (
     7  	"github.com/juju/juju/environs/config"
     8  	"github.com/juju/juju/state"
     9  	"github.com/juju/juju/state/cloudimagemetadata"
    10  	names "gopkg.in/juju/names.v2"
    11  )
    12  
    13  type metadataAcess interface {
    14  	FindMetadata(cloudimagemetadata.MetadataFilter) (map[string][]cloudimagemetadata.Metadata, error)
    15  	SaveMetadata([]cloudimagemetadata.Metadata) error
    16  	DeleteMetadata(imageId string) error
    17  	Model() (Model, error)
    18  	ModelConfig() (*config.Config, error)
    19  	ControllerTag() names.ControllerTag
    20  }
    21  
    22  type Model interface {
    23  	CloudRegion() string
    24  }
    25  
    26  var getState = func(st *state.State) metadataAcess {
    27  	return stateShim{st}
    28  }
    29  
    30  type stateShim struct {
    31  	*state.State
    32  }
    33  
    34  func (s stateShim) FindMetadata(f cloudimagemetadata.MetadataFilter) (map[string][]cloudimagemetadata.Metadata, error) {
    35  	return s.State.CloudImageMetadataStorage.FindMetadata(f)
    36  }
    37  
    38  func (s stateShim) SaveMetadata(m []cloudimagemetadata.Metadata) error {
    39  	return s.State.CloudImageMetadataStorage.SaveMetadata(m)
    40  }
    41  
    42  func (s stateShim) DeleteMetadata(imageId string) error {
    43  	return s.State.CloudImageMetadataStorage.DeleteMetadata(imageId)
    44  }
    45  
    46  func (s stateShim) Model() (Model, error) {
    47  	m, err := s.State.Model()
    48  	if err != nil {
    49  		return nil, err
    50  	}
    51  	return modelShim{m}, nil
    52  }
    53  
    54  type modelShim struct {
    55  	*state.Model
    56  }