package main
import (
+ "bytes"
+ "context"
+ "errors"
+ "flag"
"fmt"
"io"
+ "io/ioutil"
+ "net/http"
+ "os"
+ "regexp"
+ "strconv"
+ "strings"
+ "sync"
"time"
- "github.com/Azure/azure-sdk-for-go/storage"
+ "git.curoverse.com/arvados.git/sdk/go/arvados"
+ log "github.com/Sirupsen/logrus"
+ "github.com/curoverse/azure-sdk-for-go/storage"
)
+const azureDefaultRequestTimeout = arvados.Duration(10 * time.Minute)
+
+var (
+ azureMaxGetBytes int
+ azureStorageAccountName string
+ azureStorageAccountKeyFile string
+ azureStorageReplication int
+ azureWriteRaceInterval = 15 * time.Second
+ azureWriteRacePollTime = time.Second
+)
+
+func readKeyFromFile(file string) (string, error) {
+ buf, err := ioutil.ReadFile(file)
+ if err != nil {
+ return "", errors.New("reading key from " + file + ": " + err.Error())
+ }
+ accountKey := strings.TrimSpace(string(buf))
+ if accountKey == "" {
+ return "", errors.New("empty account key in " + file)
+ }
+ return accountKey, nil
+}
+
+type azureVolumeAdder struct {
+ *Config
+}
+
+// String implements flag.Value
+func (s *azureVolumeAdder) String() string {
+ return "-"
+}
+
+func (s *azureVolumeAdder) Set(containerName string) error {
+ s.Config.Volumes = append(s.Config.Volumes, &AzureBlobVolume{
+ ContainerName: containerName,
+ StorageAccountName: azureStorageAccountName,
+ StorageAccountKeyFile: azureStorageAccountKeyFile,
+ AzureReplication: azureStorageReplication,
+ ReadOnly: deprecated.flagReadonly,
+ })
+ return nil
+}
+
+func init() {
+ VolumeTypes = append(VolumeTypes, func() VolumeWithExamples { return &AzureBlobVolume{} })
+
+ flag.Var(&azureVolumeAdder{theConfig},
+ "azure-storage-container-volume",
+ "Use the given container as a storage volume. Can be given multiple times.")
+ flag.StringVar(
+ &azureStorageAccountName,
+ "azure-storage-account-name",
+ "",
+ "Azure storage account name used for subsequent --azure-storage-container-volume arguments.")
+ flag.StringVar(
+ &azureStorageAccountKeyFile,
+ "azure-storage-account-key-file",
+ "",
+ "`File` containing the account key used for subsequent --azure-storage-container-volume arguments.")
+ flag.IntVar(
+ &azureStorageReplication,
+ "azure-storage-replication",
+ 3,
+ "Replication level to report to clients when data is stored in an Azure container.")
+ flag.IntVar(
+ &azureMaxGetBytes,
+ "azure-max-get-bytes",
+ BlockSize,
+ fmt.Sprintf("Maximum bytes to request in a single GET request. If smaller than %d, use multiple concurrent range requests to retrieve a block.", BlockSize))
+}
+
// An AzureBlobVolume stores and retrieves blocks in an Azure Blob
// container.
type AzureBlobVolume struct {
- azClient storage.Client
- bsClient storage.BlobStorageClient
- containerName string
- readonly bool
+ StorageAccountName string
+ StorageAccountKeyFile string
+ StorageBaseURL string // "" means default, "core.windows.net"
+ ContainerName string
+ AzureReplication int
+ ReadOnly bool
+ RequestTimeout arvados.Duration
+
+ azClient storage.Client
+ bsClient *azureBlobClient
}
-func NewAzureBlobVolume(client storage.Client, containerName string, readonly bool) *AzureBlobVolume {
- return &AzureBlobVolume{
- azClient: client,
- bsClient: client.GetBlobService(),
- containerName: containerName,
- readonly: readonly,
+// Examples implements VolumeWithExamples.
+func (*AzureBlobVolume) Examples() []Volume {
+ return []Volume{
+ &AzureBlobVolume{
+ StorageAccountName: "example-account-name",
+ StorageAccountKeyFile: "/etc/azure_storage_account_key.txt",
+ ContainerName: "example-container-name",
+ AzureReplication: 3,
+ RequestTimeout: azureDefaultRequestTimeout,
+ },
}
}
-func (v *AzureBlobVolume) Get(loc string) ([]byte, error) {
- rdr, err := v.bsClient.GetBlob(v.containerName, loc)
+// Type implements Volume.
+func (v *AzureBlobVolume) Type() string {
+ return "Azure"
+}
+
+// Start implements Volume.
+func (v *AzureBlobVolume) Start() error {
+ if v.ContainerName == "" {
+ return errors.New("no container name given")
+ }
+ if v.StorageAccountName == "" || v.StorageAccountKeyFile == "" {
+ return errors.New("StorageAccountName and StorageAccountKeyFile must be given")
+ }
+ accountKey, err := readKeyFromFile(v.StorageAccountKeyFile)
if err != nil {
- return nil, err
+ return err
}
- buf := bufs.Get(BlockSize)
- n, err := io.ReadFull(rdr, buf)
- switch err {
- case io.EOF, io.ErrUnexpectedEOF:
- return buf[:n], nil
- default:
- bufs.Put(buf)
- return nil, err
+ if v.StorageBaseURL == "" {
+ v.StorageBaseURL = storage.DefaultBaseURL
+ }
+ v.azClient, err = storage.NewClient(v.StorageAccountName, accountKey, v.StorageBaseURL, storage.DefaultAPIVersion, true)
+ if err != nil {
+ return fmt.Errorf("creating Azure storage client: %s", err)
+ }
+
+ if v.RequestTimeout == 0 {
+ v.RequestTimeout = azureDefaultRequestTimeout
+ }
+ v.azClient.HTTPClient = &http.Client{
+ Timeout: time.Duration(v.RequestTimeout),
+ }
+ bs := v.azClient.GetBlobService()
+ v.bsClient = &azureBlobClient{
+ client: &bs,
+ }
+
+ ok, err := v.bsClient.ContainerExists(v.ContainerName)
+ if err != nil {
+ return err
+ }
+ if !ok {
+ return fmt.Errorf("Azure container %q does not exist", v.ContainerName)
+ }
+ return nil
+}
+
+// Return true if expires_at metadata attribute is found on the block
+func (v *AzureBlobVolume) checkTrashed(loc string) (bool, map[string]string, error) {
+ metadata, err := v.bsClient.GetBlobMetadata(v.ContainerName, loc)
+ if err != nil {
+ return false, metadata, v.translateError(err)
+ }
+ if metadata["expires_at"] != "" {
+ return true, metadata, nil
}
+ return false, metadata, nil
}
-func (v *AzureBlobVolume) Compare(loc string, data []byte) error {
- return NotFoundError
+// Get reads a Keep block that has been stored as a block blob in the
+// container.
+//
+// If the block is younger than azureWriteRaceInterval and is
+// unexpectedly empty, assume a PutBlob operation is in progress, and
+// wait for it to finish writing.
+func (v *AzureBlobVolume) Get(ctx context.Context, loc string, buf []byte) (int, error) {
+ trashed, _, err := v.checkTrashed(loc)
+ if err != nil {
+ return 0, err
+ }
+ if trashed {
+ return 0, os.ErrNotExist
+ }
+ var deadline time.Time
+ haveDeadline := false
+ size, err := v.get(ctx, loc, buf)
+ for err == nil && size == 0 && loc != "d41d8cd98f00b204e9800998ecf8427e" {
+ // Seeing a brand new empty block probably means we're
+ // in a race with CreateBlob, which under the hood
+ // (apparently) does "CreateEmpty" and "CommitData"
+ // with no additional transaction locking.
+ if !haveDeadline {
+ t, err := v.Mtime(loc)
+ if err != nil {
+ log.Print("Got empty block (possible race) but Mtime failed: ", err)
+ break
+ }
+ deadline = t.Add(azureWriteRaceInterval)
+ if time.Now().After(deadline) {
+ break
+ }
+ log.Printf("Race? Block %s is 0 bytes, %s old. Polling until %s", loc, time.Since(t), deadline)
+ haveDeadline = true
+ } else if time.Now().After(deadline) {
+ break
+ }
+ select {
+ case <-ctx.Done():
+ return 0, ctx.Err()
+ case <-time.After(azureWriteRacePollTime):
+ }
+ size, err = v.get(ctx, loc, buf)
+ }
+ if haveDeadline {
+ log.Printf("Race ended with size==%d", size)
+ }
+ return size, err
}
-func (v *AzureBlobVolume) Put(loc string, block []byte) error {
- return NotFoundError
+func (v *AzureBlobVolume) get(ctx context.Context, loc string, buf []byte) (int, error) {
+ ctx, cancel := context.WithCancel(ctx)
+ defer cancel()
+ expectSize := len(buf)
+ if azureMaxGetBytes < BlockSize {
+ // Unfortunately the handler doesn't tell us how long the blob
+ // is expected to be, so we have to ask Azure.
+ props, err := v.bsClient.GetBlobProperties(v.ContainerName, loc)
+ if err != nil {
+ return 0, v.translateError(err)
+ }
+ if props.ContentLength > int64(BlockSize) || props.ContentLength < 0 {
+ return 0, fmt.Errorf("block %s invalid size %d (max %d)", loc, props.ContentLength, BlockSize)
+ }
+ expectSize = int(props.ContentLength)
+ }
+
+ if expectSize == 0 {
+ return 0, nil
+ }
+
+ // We'll update this actualSize if/when we get the last piece.
+ actualSize := -1
+ pieces := (expectSize + azureMaxGetBytes - 1) / azureMaxGetBytes
+ errors := make(chan error, pieces)
+ var wg sync.WaitGroup
+ wg.Add(pieces)
+ for p := 0; p < pieces; p++ {
+ // Each goroutine retrieves one piece. If we hit an
+ // error, it is sent to the errors chan so get() can
+ // return it -- but only if the error happens before
+ // ctx is done. This way, if ctx is done before we hit
+ // any other error (e.g., requesting client has hung
+ // up), we return the original ctx.Err() instead of
+ // the secondary errors from the transfers that got
+ // interrupted as a result.
+ go func(p int) {
+ defer wg.Done()
+ startPos := p * azureMaxGetBytes
+ endPos := startPos + azureMaxGetBytes
+ if endPos > expectSize {
+ endPos = expectSize
+ }
+ var rdr io.ReadCloser
+ var err error
+ gotRdr := make(chan struct{})
+ go func() {
+ defer close(gotRdr)
+ if startPos == 0 && endPos == expectSize {
+ rdr, err = v.bsClient.GetBlob(v.ContainerName, loc)
+ } else {
+ rdr, err = v.bsClient.GetBlobRange(v.ContainerName, loc, fmt.Sprintf("%d-%d", startPos, endPos-1), nil)
+ }
+ }()
+ select {
+ case <-ctx.Done():
+ go func() {
+ <-gotRdr
+ if err == nil {
+ rdr.Close()
+ }
+ }()
+ return
+ case <-gotRdr:
+ }
+ if err != nil {
+ errors <- err
+ cancel()
+ return
+ }
+ go func() {
+ // Close the reader when the client
+ // hangs up or another piece fails
+ // (possibly interrupting ReadFull())
+ // or when all pieces succeed and
+ // get() returns.
+ <-ctx.Done()
+ rdr.Close()
+ }()
+ n, err := io.ReadFull(rdr, buf[startPos:endPos])
+ if pieces == 1 && (err == io.ErrUnexpectedEOF || err == io.EOF) {
+ // If we don't know the actual size,
+ // and just tried reading 64 MiB, it's
+ // normal to encounter EOF.
+ } else if err != nil {
+ if ctx.Err() == nil {
+ errors <- err
+ }
+ cancel()
+ return
+ }
+ if p == pieces-1 {
+ actualSize = startPos + n
+ }
+ }(p)
+ }
+ wg.Wait()
+ close(errors)
+ if len(errors) > 0 {
+ return 0, v.translateError(<-errors)
+ }
+ if ctx.Err() != nil {
+ return 0, ctx.Err()
+ }
+ return actualSize, nil
}
+// Compare the given data with existing stored data.
+func (v *AzureBlobVolume) Compare(ctx context.Context, loc string, expect []byte) error {
+ trashed, _, err := v.checkTrashed(loc)
+ if err != nil {
+ return err
+ }
+ if trashed {
+ return os.ErrNotExist
+ }
+ var rdr io.ReadCloser
+ gotRdr := make(chan struct{})
+ go func() {
+ defer close(gotRdr)
+ rdr, err = v.bsClient.GetBlob(v.ContainerName, loc)
+ }()
+ select {
+ case <-ctx.Done():
+ go func() {
+ <-gotRdr
+ if err == nil {
+ rdr.Close()
+ }
+ }()
+ return ctx.Err()
+ case <-gotRdr:
+ }
+ if err != nil {
+ return v.translateError(err)
+ }
+ defer rdr.Close()
+ return compareReaderWithBuf(ctx, rdr, expect, loc[:32])
+}
+
+// Put stores a Keep block as a block blob in the container.
+func (v *AzureBlobVolume) Put(ctx context.Context, loc string, block []byte) error {
+ if v.ReadOnly {
+ return MethodDisabledError
+ }
+ // Send the block data through a pipe, so that (if we need to)
+ // we can close the pipe early and abandon our
+ // CreateBlockBlobFromReader() goroutine, without worrying
+ // about CreateBlockBlobFromReader() accessing our block
+ // buffer after we release it.
+ bufr, bufw := io.Pipe()
+ go func() {
+ io.Copy(bufw, bytes.NewReader(block))
+ bufw.Close()
+ }()
+ errChan := make(chan error)
+ go func() {
+ errChan <- v.bsClient.CreateBlockBlobFromReader(v.ContainerName, loc, uint64(len(block)), bufr, nil)
+ }()
+ select {
+ case <-ctx.Done():
+ theConfig.debugLogf("%s: taking CreateBlockBlobFromReader's input away: %s", v, ctx.Err())
+ // Our pipe might be stuck in Write(), waiting for
+ // io.Copy() to read. If so, un-stick it. This means
+ // CreateBlockBlobFromReader will get corrupt data,
+ // but that's OK: the size won't match, so the write
+ // will fail.
+ go io.Copy(ioutil.Discard, bufr)
+ // CloseWithError() will return once pending I/O is done.
+ bufw.CloseWithError(ctx.Err())
+ theConfig.debugLogf("%s: abandoning CreateBlockBlobFromReader goroutine", v)
+ return ctx.Err()
+ case err := <-errChan:
+ return err
+ }
+}
+
+// Touch updates the last-modified property of a block blob.
func (v *AzureBlobVolume) Touch(loc string) error {
- return NotFoundError
+ if v.ReadOnly {
+ return MethodDisabledError
+ }
+ trashed, metadata, err := v.checkTrashed(loc)
+ if err != nil {
+ return err
+ }
+ if trashed {
+ return os.ErrNotExist
+ }
+
+ metadata["touch"] = fmt.Sprintf("%d", time.Now())
+ return v.bsClient.SetBlobMetadata(v.ContainerName, loc, metadata, nil)
}
+// Mtime returns the last-modified property of a block blob.
func (v *AzureBlobVolume) Mtime(loc string) (time.Time, error) {
- return time.Time{}, NotFoundError
+ trashed, _, err := v.checkTrashed(loc)
+ if err != nil {
+ return time.Time{}, err
+ }
+ if trashed {
+ return time.Time{}, os.ErrNotExist
+ }
+
+ props, err := v.bsClient.GetBlobProperties(v.ContainerName, loc)
+ if err != nil {
+ return time.Time{}, err
+ }
+ return time.Parse(time.RFC1123, props.LastModified)
}
+// IndexTo writes a list of Keep blocks that are stored in the
+// container.
func (v *AzureBlobVolume) IndexTo(prefix string, writer io.Writer) error {
- return nil
+ params := storage.ListBlobsParameters{
+ Prefix: prefix,
+ Include: "metadata",
+ }
+ 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
+ }
+ if b.Metadata["expires_at"] != "" {
+ // Trashed blob; exclude it from response
+ continue
+ }
+ fmt.Fprintf(writer, "%s+%d %d\n", b.Name, b.Properties.ContentLength, t.UnixNano())
+ }
+ if resp.NextMarker == "" {
+ return nil
+ }
+ params.Marker = resp.NextMarker
+ }
}
-func (v *AzureBlobVolume) Delete(loc string) error {
- return NotFoundError
+// Trash a Keep block.
+func (v *AzureBlobVolume) Trash(loc string) error {
+ if v.ReadOnly {
+ return MethodDisabledError
+ }
+
+ // Ideally we would use If-Unmodified-Since, but that
+ // particular condition seems to be ignored by Azure. Instead,
+ // we get the Etag before checking Mtime, and use If-Match to
+ // ensure we don't delete data if Put() or Touch() happens
+ // between our calls to Mtime() and DeleteBlob().
+ props, err := v.bsClient.GetBlobProperties(v.ContainerName, loc)
+ if err != nil {
+ return err
+ }
+ if t, err := v.Mtime(loc); err != nil {
+ return err
+ } else if time.Since(t) < theConfig.BlobSignatureTTL.Duration() {
+ return nil
+ }
+
+ // If TrashLifetime == 0, just delete it
+ if theConfig.TrashLifetime == 0 {
+ return v.bsClient.DeleteBlob(v.ContainerName, loc, map[string]string{
+ "If-Match": props.Etag,
+ })
+ }
+
+ // Otherwise, mark as trash
+ return v.bsClient.SetBlobMetadata(v.ContainerName, loc, map[string]string{
+ "expires_at": fmt.Sprintf("%d", time.Now().Add(theConfig.TrashLifetime.Duration()).Unix()),
+ }, map[string]string{
+ "If-Match": props.Etag,
+ })
}
+// Untrash a Keep block.
+// Delete the expires_at metadata attribute
+func (v *AzureBlobVolume) Untrash(loc string) error {
+ // if expires_at does not exist, return NotFoundError
+ metadata, err := v.bsClient.GetBlobMetadata(v.ContainerName, loc)
+ if err != nil {
+ return v.translateError(err)
+ }
+ if metadata["expires_at"] == "" {
+ return os.ErrNotExist
+ }
+
+ // reset expires_at metadata attribute
+ metadata["expires_at"] = ""
+ err = v.bsClient.SetBlobMetadata(v.ContainerName, loc, metadata, nil)
+ return v.translateError(err)
+}
+
+// Status returns a VolumeStatus struct with placeholder data.
func (v *AzureBlobVolume) Status() *VolumeStatus {
return &VolumeStatus{
DeviceNum: 1,
}
}
+// String returns a volume label, including the container name.
func (v *AzureBlobVolume) String() string {
- return fmt.Sprintf("%+v", v.azClient)
+ return fmt.Sprintf("azure-storage-container:%+q", v.ContainerName)
}
+// Writable returns true, unless the -readonly flag was on when the
+// volume was added.
func (v *AzureBlobVolume) Writable() bool {
- return !v.readonly
+ return !v.ReadOnly
+}
+
+// Replication returns the replication level of the container, as
+// specified by the -azure-storage-replication argument.
+func (v *AzureBlobVolume) Replication() int {
+ return v.AzureReplication
+}
+
+// If possible, translate an Azure SDK error to a recognizable error
+// like os.ErrNotExist.
+func (v *AzureBlobVolume) translateError(err error) error {
+ switch {
+ case err == nil:
+ return err
+ case strings.Contains(err.Error(), "Not Found"):
+ // "storage: service returned without a response body (404 Not Found)"
+ return os.ErrNotExist
+ default:
+ return err
+ }
+}
+
+var keepBlockRegexp = regexp.MustCompile(`^[0-9a-f]{32}$`)
+
+func (v *AzureBlobVolume) isKeepBlock(s string) bool {
+ return keepBlockRegexp.MatchString(s)
+}
+
+// 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)
+}
+
+// InternalStats returns bucket I/O and API call counters.
+func (v *AzureBlobVolume) InternalStats() interface{} {
+ return &v.bsClient.stats
+}
+
+type azureBlobStats struct {
+ statsTicker
+ Ops uint64
+ GetOps uint64
+ GetRangeOps uint64
+ GetMetadataOps uint64
+ GetPropertiesOps uint64
+ CreateOps uint64
+ SetMetadataOps uint64
+ DelOps uint64
+ ListOps uint64
+}
+
+func (s *azureBlobStats) TickErr(err error) {
+ if err == nil {
+ return
+ }
+ errType := fmt.Sprintf("%T", err)
+ if err, ok := err.(storage.AzureStorageServiceError); ok {
+ errType = errType + fmt.Sprintf(" %d (%s)", err.StatusCode, err.Code)
+ }
+ log.Printf("errType %T, err %s", err, err)
+ s.statsTicker.TickErr(err, errType)
+}
+
+// azureBlobClient wraps storage.BlobStorageClient in order to count
+// I/O and API usage stats.
+type azureBlobClient struct {
+ client *storage.BlobStorageClient
+ stats azureBlobStats
+}
+
+func (c *azureBlobClient) ContainerExists(cname string) (bool, error) {
+ c.stats.Tick(&c.stats.Ops)
+ ok, err := c.client.ContainerExists(cname)
+ c.stats.TickErr(err)
+ return ok, err
+}
+
+func (c *azureBlobClient) GetBlobMetadata(cname, bname string) (map[string]string, error) {
+ c.stats.Tick(&c.stats.Ops, &c.stats.GetMetadataOps)
+ m, err := c.client.GetBlobMetadata(cname, bname)
+ c.stats.TickErr(err)
+ return m, err
+}
+
+func (c *azureBlobClient) GetBlobProperties(cname, bname string) (*storage.BlobProperties, error) {
+ c.stats.Tick(&c.stats.Ops, &c.stats.GetPropertiesOps)
+ p, err := c.client.GetBlobProperties(cname, bname)
+ c.stats.TickErr(err)
+ return p, err
+}
+
+func (c *azureBlobClient) GetBlob(cname, bname string) (io.ReadCloser, error) {
+ c.stats.Tick(&c.stats.Ops, &c.stats.GetOps)
+ rdr, err := c.client.GetBlob(cname, bname)
+ c.stats.TickErr(err)
+ return NewCountingReader(rdr, c.stats.TickInBytes), err
+}
+
+func (c *azureBlobClient) GetBlobRange(cname, bname, byterange string, hdrs map[string]string) (io.ReadCloser, error) {
+ c.stats.Tick(&c.stats.Ops, &c.stats.GetRangeOps)
+ rdr, err := c.client.GetBlobRange(cname, bname, byterange, hdrs)
+ c.stats.TickErr(err)
+ return NewCountingReader(rdr, c.stats.TickInBytes), err
+}
+
+func (c *azureBlobClient) CreateBlockBlobFromReader(cname, bname string, size uint64, rdr io.Reader, hdrs map[string]string) error {
+ c.stats.Tick(&c.stats.Ops, &c.stats.CreateOps)
+ rdr = NewCountingReader(rdr, c.stats.TickOutBytes)
+ err := c.client.CreateBlockBlobFromReader(cname, bname, size, rdr, hdrs)
+ c.stats.TickErr(err)
+ return err
+}
+
+func (c *azureBlobClient) SetBlobMetadata(cname, bname string, m, hdrs map[string]string) error {
+ c.stats.Tick(&c.stats.Ops, &c.stats.SetMetadataOps)
+ err := c.client.SetBlobMetadata(cname, bname, m, hdrs)
+ c.stats.TickErr(err)
+ return err
+}
+
+func (c *azureBlobClient) ListBlobs(cname string, params storage.ListBlobsParameters) (storage.BlobListResponse, error) {
+ c.stats.Tick(&c.stats.Ops, &c.stats.ListOps)
+ resp, err := c.client.ListBlobs(cname, params)
+ c.stats.TickErr(err)
+ return resp, err
+}
+
+func (c *azureBlobClient) DeleteBlob(cname, bname string, hdrs map[string]string) error {
+ c.stats.Tick(&c.stats.Ops, &c.stats.DelOps)
+ err := c.client.DeleteBlob(cname, bname, hdrs)
+ c.stats.TickErr(err)
+ return err
}
projects / arvados.git / blobdiff