func (r *s3Replica) Pull(from string, target Pusher) error { bucket, err := s3utils.NewBucket(r.uri) if err != nil { return err } err = s3utils.ForEachFile(r.uri, from, func(path string, modtime time.Time) (retErr error) { f, err := bucket.GetReader(path) if f == nil { return fmt.Errorf("Nil file returned.") } if err != nil { return err } defer func() { if err := f.Close(); err != nil && retErr == nil { retErr = err } }() err = target.Push(f) if err != nil { return err } return nil }) if err != nil { return err } return nil }
func (r *s3Replica) Push(diff io.Reader) error { bucket, err := s3utils.NewBucket(r.uri) if err != nil { return err } key := fmt.Sprintf("%.10d", r.count) r.count++ p, err := s3utils.GetPath(r.uri) if err != nil { return err } return s3utils.PutMulti(bucket, path.Join(p, key), diff, "application/octet-stream", s3.BucketOwnerFull) }
// inject injects data from an external source into the output directory func (p *pipeline) inject(name string) error { switch { case strings.HasPrefix(name, "s3://"): bucket, err := s3utils.NewBucket(name) if err != nil { return err } var wg sync.WaitGroup s3utils.ForEachFile(name, "", func(file string, modtime time.Time) error { // Grab the path, it's handy later _path, err := s3utils.GetPath(name) if err != nil { return err } if err != nil { return err } // Check if the file belongs on shit shard match, err := route.Match(file, p.shard) if err != nil { return err } if !match { return nil } // Check if the file has changed changed, err := btrfs.Changed(path.Join(p.outRepo, p.branch, strings.TrimPrefix(file, _path)), modtime) log.Print("Changed: ", changed) if err != nil { return err } if !changed { return nil } // TODO match the on disk timestamps to s3's timestamps and make // sure we only pull data that has changed wg.Add(1) go func() { defer wg.Done() src, err := bucket.GetReader(file) if err != nil { return } dst, err := btrfs.CreateAll(path.Join(p.outRepo, p.branch, strings.TrimPrefix(file, _path))) if err != nil { return } defer dst.Close() _, err = io.Copy(dst, src) if err != nil { return } err = btrfs.Chtimes(path.Join(p.outRepo, p.branch, strings.TrimPrefix(file, _path)), modtime, modtime) if err != nil { return } }() return nil }) wg.Wait() default: log.Print("Unknown protocol: ", name) return ErrUnknownProtocol } return nil }