forked from umputun/remark42
/
avatar.go
101 lines (84 loc) · 2.79 KB
/
avatar.go
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package cmd
import (
"path"
"time"
bolt "github.com/coreos/bbolt"
log "github.com/go-pkgz/lgr"
"github.com/pkg/errors"
"github.com/go-pkgz/auth/avatar"
"github.com/go-pkgz/mongo"
)
// AvatarCommand set of flags and command for avatar migration
// it converts all avatars from src.type to dst.type.
// Note: it is possible to run migration for the same types (src = dst) in order to resize all avatars.
type AvatarCommand struct {
AvatarSrc AvatarGroup `group:"src" namespace:"src"`
AvatarDst AvatarGroup `group:"dst" namespace:"dst"`
Mongo MongoGroup `group:"mongo" namespace:"mongo" env-namespace:"MONGO"`
migrator AvatarMigrator
CommonOpts
}
// AvatarMigrator defines interface for migration
type AvatarMigrator interface {
Migrate(avatar.Store, avatar.Store) (int, error)
}
type avatarMigrator struct{}
func (a avatarMigrator) Migrate(dst, src avatar.Store) (int, error) {
return avatar.Migrate(dst, src)
}
// Execute runs with AvatarCommand parameters, entry point for "avatar" command
func (ac *AvatarCommand) Execute(args []string) error {
log.Printf("[INFO] migrate avatars from %s to %s", ac.AvatarSrc.Type, ac.AvatarDst.Type)
src, err := ac.makeAvatarStore(ac.AvatarSrc)
if err != nil {
return errors.Wrapf(err, "can't make avatart store for %s", ac.AvatarSrc.Type)
}
dst, err := ac.makeAvatarStore(ac.AvatarDst)
if err != nil {
return errors.Wrapf(err, "can't make avatart store for %s", ac.AvatarDst.Type)
}
if ac.migrator == nil {
ac.migrator = avatarMigrator{}
}
count, err := ac.migrator.Migrate(dst, src)
if err != nil {
return err
}
if err = dst.Close(); err != nil {
log.Printf("[WARN] failed to close dst store %s", ac.AvatarDst.Type)
}
if err = src.Close(); err != nil {
log.Printf("[WARN] failed to close src store %s", ac.AvatarSrc.Type)
}
log.Printf("[INFO] completed, migrated avatars = %d", count)
return nil
}
func (ac *AvatarCommand) makeAvatarStore(gr AvatarGroup) (avatar.Store, error) {
log.Printf("[DEBUG] make avatar store, type=%s", gr.Type)
switch gr.Type {
case "fs":
if err := makeDirs(gr.FS.Path); err != nil {
return nil, err
}
return avatar.NewLocalFS(gr.FS.Path), nil
case "mongo":
mgServer, err := ac.makeMongo()
if err != nil {
return nil, errors.Wrap(err, "failed to create mongo server")
}
conn := mongo.NewConnection(mgServer, ac.Mongo.DB, "")
return avatar.NewGridFS(conn), nil
case "bolt":
if err := makeDirs(path.Dir(gr.Bolt.File)); err != nil {
return nil, err
}
return avatar.NewBoltDB(gr.Bolt.File, bolt.Options{})
}
return nil, errors.Errorf("unsupported avatar store type %s", gr.Type)
}
func (ac *AvatarCommand) makeMongo() (result *mongo.Server, err error) {
if ac.Mongo.URL == "" {
return nil, errors.New("no mongo URL provided")
}
return mongo.NewServerWithURL(ac.Mongo.URL, 10*time.Second)
}