datastore

type Factory interface {
	Create(provider ProviderName, name string, options map[string]interface{}) (Index, error)
}

type FilterParams struct {
	NameExpected bool
	Name         string

	VersionExpected   bool
	Version           string
	VersionConstraint *semver.Constraints

	ChecksumExpected bool
	Checksum         string

	URIExpected bool
	URI         string

	LabelsExpected bool // TODO unnecessary? implied by len > 0
	Labels         []string
}

type Index interface {
	GetName() string
	GetArtifacts(f FilterParams) ([]releaseversion.Artifact, error)
	GetLabels() ([]string, error)
	FlushCache() error
}

type NamedGetter func(name string) (Index, error)

type ProviderName string