metamgr

type ProjectMetadataManager interface {
	// Add metadatas for project specified by projectID
	Add(projectID int64, meta map[string]string) error
	// Delete metadatas whose keys are specified in parameter meta, if it
	// is absent, delete all
	Delete(projecdtID int64, meta ...string) error
	// Update metadatas
	Update(projectID int64, meta map[string]string) error
	// Get metadatas whose keys are specified in parameter meta, if it is
	// absent, get all
	Get(projectID int64, meta ...string) (map[string]string, error)
	// List metadata according to the name and value
	List(name, value string) ([]*models.ProjectMetadata, error)
}