resource

type CharmHub interface {
	DownloadResource(ctx context.Context, resourceURL *url.URL) (r io.ReadCloser, err error)
	Refresh(ctx context.Context, config charmhub.RefreshConfig) ([]transport.RefreshResponse, error)
}

type CharmHubClient struct {
	// contains filtered or unexported fields
}

type CharmID struct {

	// URL of the given charm, includes the reference name and a revision.
	// Old style charm URLs are also supported i.e. charmstore.
	URL *charm.URL

	// Origin holds the origin of a charm. This includes the source of the
	// charm, along with the revision and channel to identify where the charm
	// originated from.
	Origin state.CharmOrigin
}

type Logger interface {
	Tracef(string, ...interface{})
}

type ResourceData struct {
	// ReadCloser holds the bytes for the resource.
	io.ReadCloser

	// Resource holds the metadata for the resource.
	Resource charmresource.Resource
}

type ResourceDownloadLock interface {
	// Acquire grabs the lock for a given application so long as the
	// per application limit is not exceeded and total across all
	// applications does not exceed the global limit.
	Acquire(appName string)

	// Release releases the lock for the given application.
	Release(appName string)
}

type ResourceGetter interface {
	// GetResource returns a reader for the resource's data. That data
	// is streamed from the charm store. The charm's revision, if any,
	// is ignored. If the identified resource is not in the charm store
	// then errors.NotFound is returned.
	//
	// But if you write any code that assumes a NotFound error returned
	// from this method means that the resource was not found, you fail
	// basic logic.
	GetResource(ResourceRequest) (ResourceData, error)
}

type ResourceOpener struct {
	// contains filtered or unexported fields
}

type ResourceRequest struct {
	// Channel is the channel from which to request the resource info.
	CharmID CharmID

	// Name is the name of the resource we're asking about.
	Name string

	// Revision is the specific revision of the resource we're asking about.
	Revision int
}

type ResourceRetryClient struct {
	ResourceGetter
	// contains filtered or unexported fields
}

type Resources interface {
	// GetResource returns the identified resource.
	GetResource(applicationID, name string) (resources.Resource, error)
	// OpenResource returns the metadata for a resource and a reader for the resource.
	OpenResource(applicationID, name string) (resources.Resource, io.ReadCloser, error)
	// OpenResourceForUniter returns the metadata for a resource and a reader for the resource.
	OpenResourceForUniter(unitName, resName string) (resources.Resource, io.ReadCloser, error)
	// SetResource adds the resource to blob storage and updates the metadata.
	SetResource(applicationID, userID string, res charmresource.Resource, r io.Reader, _ state.IncrementCharmModifiedVersionType) (resources.Resource, error)
}