Exemple #1
0
// IndexTo writes a list of Keep blocks that are stored in the
// container.
func (v *AzureBlobVolume) IndexTo(prefix string, writer io.Writer) error {
	params := storage.ListBlobsParameters{
		Prefix: prefix,
	}
	for {
		resp, err := v.bsClient.ListBlobs(v.containerName, params)
		if err != nil {
			return err
		}
		for _, b := range resp.Blobs {
			t, err := time.Parse(time.RFC1123, b.Properties.LastModified)
			if err != nil {
				return err
			}
			if !v.isKeepBlock(b.Name) {
				continue
			}
			if b.Properties.ContentLength == 0 && t.Add(azureWriteRaceInterval).After(time.Now()) {
				// A new zero-length blob is probably
				// just a new non-empty blob that
				// hasn't committed its data yet (see
				// Get()), and in any case has no
				// value.
				continue
			}
			fmt.Fprintf(writer, "%s+%d %d\n", b.Name, b.Properties.ContentLength, t.Unix())
		}
		if resp.NextMarker == "" {
			return nil
		}
		params.Marker = resp.NextMarker
	}
}
// EmptyTrash looks for trashed blocks that exceeded trashLifetime
// and deletes them from the volume.
func (v *AzureBlobVolume) EmptyTrash() {
	var bytesDeleted, bytesInTrash int64
	var blocksDeleted, blocksInTrash int
	params := storage.ListBlobsParameters{Include: "metadata"}

	for {
		resp, err := v.bsClient.ListBlobs(v.containerName, params)
		if err != nil {
			log.Printf("EmptyTrash: ListBlobs: %v", err)
			break
		}
		for _, b := range resp.Blobs {
			// Check if the block is expired
			if b.Metadata["expires_at"] == "" {
				continue
			}

			blocksInTrash++
			bytesInTrash += b.Properties.ContentLength

			expiresAt, err := strconv.ParseInt(b.Metadata["expires_at"], 10, 64)
			if err != nil {
				log.Printf("EmptyTrash: ParseInt(%v): %v", b.Metadata["expires_at"], err)
				continue
			}

			if expiresAt > time.Now().Unix() {
				continue
			}

			err = v.bsClient.DeleteBlob(v.containerName, b.Name, map[string]string{
				"If-Match": b.Properties.Etag,
			})
			if err != nil {
				log.Printf("EmptyTrash: DeleteBlob(%v): %v", b.Name, err)
				continue
			}
			blocksDeleted++
			bytesDeleted += b.Properties.ContentLength
		}
		if resp.NextMarker == "" {
			break
		}
		params.Marker = resp.NextMarker
	}

	log.Printf("EmptyTrash stats for %v: Deleted %v bytes in %v blocks. Remaining in trash: %v bytes in %v blocks.", v.String(), bytesDeleted, blocksDeleted, bytesInTrash-bytesDeleted, blocksInTrash-blocksDeleted)
}