GenerateAvatar for give user with identicon.

GetGravatarURL returns url to gravatar picture for given email.

Migrate avatars between stores.

NewBoltDB makes bolt avatar store.

NewGridFS makes gridfs (mongo) avatar store.

NewLocalFS makes file-system avatar store.

NewNoOp provides an empty (no-op) implementation of Store interface.

NewStore provides factory for all supported stores making the one based on uri protocol.

BoltDB implements avatar store with bolt using separate db (file) with "avatars" bucket to keep image bin and "metas" bucket to keep sha1 of picture.

GridFS implements Store for GridFS.

LocalFS implements Store for local file system.

NoOp is an empty (no-op) implementation of Store interface.

Proxy provides http handler for avatars from avatar.Store On user login token will call Put and it will retrieve and save picture locally.

Store defines interface to store and load avatars.