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