add metrics for Azure Blob storage

cmd/portable.go

@@ -234,7 +234,7 @@ advertised via multicast DNS, this
 flag allows to put username/password
 inside the advertised TXT record`)
 	portableCmd.Flags().IntVarP(&portableFsProvider, "fs-provider", "f", int(dataprovider.LocalFilesystemProvider), `0 => local filesystem
-1 => Amazon S3 compatible
+1 => AWS S3 compatible
 2 => Google Cloud Storage
 3 => Azure Blob Storage`)
 	portableCmd.Flags().StringVar(&portableS3Bucket, "s3-bucket", "", "")

dataprovider/user.go

@@ -125,7 +125,7 @@ type FilesystemProvider int
 // supported values for FilesystemProvider
 const (
 	LocalFilesystemProvider     FilesystemProvider = iota // Local
-	S3FilesystemProvider                                  // Amazon S3 compatible
+	S3FilesystemProvider                                  // AWS S3 compatible
 	GCSFilesystemProvider                                 // Google Cloud Storage
 	AzureBlobFilesystemProvider                           // Azure Blob Storage
 )

docs/howto/postgresql-s3.md

@@ -208,7 +208,7 @@ Click `Add` and fill the user details, the minimum required parameters are:
 - `Password` or `Public keys`
 - `Permissions`
 - `Home Dir` can be empty since we defined a default base dir
-- Select `Amazon S3 (Compatible)` as storage and then set `Bucket`, `Region` and optionally a `Key Prefix` if you want to restrict the user to a specific virtual folder in the bucket. The specified virtual folder does not need to be pre-created. You can leave `Access Key` and `Access Secret` empty since we defined global credentials for the `sftpgo` user and we use this system user to run the SFTPGo service.
+- Select `AWS S3 (Compatible)` as storage and then set `Bucket`, `Region` and optionally a `Key Prefix` if you want to restrict the user to a specific virtual folder in the bucket. The specified virtual folder does not need to be pre-created. You can leave `Access Key` and `Access Secret` empty since we defined global credentials for the `sftpgo` user and we use this system user to run the SFTPGo service.
 
 You are done! Now you can connect to you SFTPGo instance using any compatible `sftp` client on port `2022`.
 

docs/portable-mode.md

@@ -48,7 +48,7 @@ Flags:
                                          relative to the current directory
                                           (default ".")
   -f, --fs-provider int                  0 => local filesystem
-                                         1 => Amazon S3 compatible
+                                         1 => AWS S3 compatible
                                          2 => Google Cloud Storage
                                          3 => Azure Blob Storage
       --ftpd-cert string                 Path to the certificate file for FTPS

examples/ldapauthserver/httpd/models.go

@@ -51,7 +51,7 @@ type GCSFsConfig struct {
 
 // SFTPGoFilesystem defines cloud storage filesystem details
 type SFTPGoFilesystem struct {
-	// 0 local filesystem, 1 Amazon S3 compatible, 2 Google Cloud Storage
+	// 0 local filesystem, 1 AWS S3 compatible, 2 Google Cloud Storage
 	Provider  int         `json:"provider"`
 	S3Config  S3FsConfig  `json:"s3config,omitempty"`
 	GCSConfig GCSFsConfig `json:"gcsconfig,omitempty"`

metrics/metrics.go

@@ -306,6 +306,18 @@ var (
 		Help: "The total number of S3 delete object errors",
 	})
 
+	// totalS3HeadObject is the metric that reports the total successful S3 head object requests
+	totalS3HeadObject = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_s3_head_object",
+		Help: "The total number of successful S3 head object requests",
+	})
+
+	// totalS3HeadObjectErrors is the metric that reports the total S3 head object errors
+	totalS3HeadObjectErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_s3_head_object_errors",
+		Help: "The total number of S3 head object errors",
+	})
+
 	// totalS3HeadBucket is the metric that reports the total successful S3 head bucket requests
 	totalS3HeadBucket = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "sftpgo_s3_head_bucket",
@@ -354,7 +366,7 @@ var (
 		Help: "The total GCS download size as bytes, partial downloads are included",
 	})
 
-	// totalS3ListObjects is the metric that reports the total successful GCS list objects requests
+	// totalGCSListObjects is the metric that reports the total successful GCS list objects requests
 	totalGCSListObjects = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "sftpgo_gcs_list_objects",
 		Help: "The total number of successful GCS list objects requests",
@@ -366,7 +378,7 @@ var (
 		Help: "The total number of successful GCS copy object requests",
 	})
 
-	// totalGCSDeleteObject is the metric that reports the total successful S3 delete object requests
+	// totalGCSDeleteObject is the metric that reports the total successful GCS delete object requests
 	totalGCSDeleteObject = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "sftpgo_gcs_delete_object",
 		Help: "The total number of successful GCS delete object requests",
@@ -390,6 +402,18 @@ var (
 		Help: "The total number of GCS delete object errors",
 	})
 
+	// totalGCSHeadObject is the metric that reports the total successful GCS head object requests
+	totalGCSHeadObject = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_gcs_head_object",
+		Help: "The total number of successful GCS head object requests",
+	})
+
+	// totalGCSHeadObjectErrors is the metric that reports the total GCS head object errors
+	totalGCSHeadObjectErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_gcs_head_object_errors",
+		Help: "The total number of GCS head object errors",
+	})
+
 	// totalGCSHeadBucket is the metric that reports the total successful GCS head bucket requests
 	totalGCSHeadBucket = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "sftpgo_gcs_head_bucket",
@@ -401,6 +425,102 @@ var (
 		Name: "sftpgo_gcs_head_bucket_errors",
 		Help: "The total number of GCS head bucket errors",
 	})
+
+	// totalAZUploads is the metric that reports the total number of successful Azure uploads
+	totalAZUploads = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_uploads_total",
+		Help: "The total number of successful Azure uploads",
+	})
+
+	// totalAZDownloads is the metric that reports the total number of successful Azure downloads
+	totalAZDownloads = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_downloads_total",
+		Help: "The total number of successful Azure downloads",
+	})
+
+	// totalAZUploadErrors is the metric that reports the total number of Azure upload errors
+	totalAZUploadErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_upload_errors_total",
+		Help: "The total number of Azure upload errors",
+	})
+
+	// totalAZDownloadErrors is the metric that reports the total number of Azure download errors
+	totalAZDownloadErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_download_errors_total",
+		Help: "The total number of Azure download errors",
+	})
+
+	// totalAZUploadSize is the metric that reports the total Azure uploads size as bytes
+	totalAZUploadSize = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_upload_size",
+		Help: "The total Azure upload size as bytes, partial uploads are included",
+	})
+
+	// totalAZDownloadSize is the metric that reports the total Azure downloads size as bytes
+	totalAZDownloadSize = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_download_size",
+		Help: "The total Azure download size as bytes, partial downloads are included",
+	})
+
+	// totalAZListObjects is the metric that reports the total successful Azure list objects requests
+	totalAZListObjects = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_list_objects",
+		Help: "The total number of successful Azure list objects requests",
+	})
+
+	// totalAZCopyObject is the metric that reports the total successful Azure copy object requests
+	totalAZCopyObject = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_copy_object",
+		Help: "The total number of successful Azure copy object requests",
+	})
+
+	// totalAZDeleteObject is the metric that reports the total successful Azure delete object requests
+	totalAZDeleteObject = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_delete_object",
+		Help: "The total number of successful Azure delete object requests",
+	})
+
+	// totalAZListObjectsError is the metric that reports the total Azure list objects errors
+	totalAZListObjectsErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_list_objects_errors",
+		Help: "The total number of Azure list objects errors",
+	})
+
+	// totalAZCopyObjectErrors is the metric that reports the total Azure copy object errors
+	totalAZCopyObjectErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_copy_object_errors",
+		Help: "The total number of Azure copy object errors",
+	})
+
+	// totalAZDeleteObjectErrors is the metric that reports the total Azure delete object errors
+	totalAZDeleteObjectErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_delete_object_errors",
+		Help: "The total number of Azure delete object errors",
+	})
+
+	// totalAZHeadObject is the metric that reports the total successful Azure head object requests
+	totalAZHeadObject = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_head_object",
+		Help: "The total number of successful Azure head object requests",
+	})
+
+	// totalAZHeadObjectErrors is the metric that reports the total Azure head object errors
+	totalAZHeadObjectErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_head_object_errors",
+		Help: "The total number of Azure head object errors",
+	})
+
+	// totalAZHeadContainer is the metric that reports the total successful Azure head container requests
+	totalAZHeadContainer = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_head_container",
+		Help: "The total number of successful Azure head container requests",
+	})
+
+	// totalAZHeadContainerErrors is the metric that reports the total Azure head container errors
+	totalAZHeadContainerErrors = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sftpgo_az_head_container_errors",
+		Help: "The total number of Azure head container errors",
+	})
 )
 
 // AddMetricsEndpoint exposes metrics to the specified endpoint
@@ -477,7 +597,16 @@ func S3DeleteObjectCompleted(err error) {
 	}
 }
 
-// S3HeadBucketCompleted updates metrics after an S3 head bucket request terminates
+// S3HeadObjectCompleted updates metrics after a S3 head object request terminates
+func S3HeadObjectCompleted(err error) {
+	if err == nil {
+		totalS3HeadObject.Inc()
+	} else {
+		totalS3HeadObjectErrors.Inc()
+	}
+}
+
+// S3HeadBucketCompleted updates metrics after a S3 head bucket request terminates
 func S3HeadBucketCompleted(err error) {
 	if err == nil {
 		totalS3HeadBucket.Inc()
@@ -534,6 +663,15 @@ func GCSDeleteObjectCompleted(err error) {
 	}
 }
 
+// GCSHeadObjectCompleted updates metrics after a GCS head object request terminates
+func GCSHeadObjectCompleted(err error) {
+	if err == nil {
+		totalGCSHeadObject.Inc()
+	} else {
+		totalGCSHeadObjectErrors.Inc()
+	}
+}
+
 // GCSHeadBucketCompleted updates metrics after a GCS head bucket request terminates
 func GCSHeadBucketCompleted(err error) {
 	if err == nil {
@@ -543,6 +681,72 @@ func GCSHeadBucketCompleted(err error) {
 	}
 }
 
+// AZTransferCompleted updates metrics after a Azure upload or a download
+func AZTransferCompleted(bytes int64, transferKind int, err error) {
+	if transferKind == 0 {
+		// upload
+		if err == nil {
+			totalAZUploads.Inc()
+		} else {
+			totalAZUploadErrors.Inc()
+		}
+		totalAZUploadSize.Add(float64(bytes))
+	} else {
+		// download
+		if err == nil {
+			totalAZDownloads.Inc()
+		} else {
+			totalAZDownloadErrors.Inc()
+		}
+		totalAZDownloadSize.Add(float64(bytes))
+	}
+}
+
+// AZListObjectsCompleted updates metrics after a Azure list objects request terminates
+func AZListObjectsCompleted(err error) {
+	if err == nil {
+		totalAZListObjects.Inc()
+	} else {
+		totalAZListObjectsErrors.Inc()
+	}
+}
+
+// AZCopyObjectCompleted updates metrics after a Azure copy object request terminates
+func AZCopyObjectCompleted(err error) {
+	if err == nil {
+		totalAZCopyObject.Inc()
+	} else {
+		totalAZCopyObjectErrors.Inc()
+	}
+}
+
+// AZDeleteObjectCompleted updates metrics after a Azure delete object request terminates
+func AZDeleteObjectCompleted(err error) {
+	if err == nil {
+		totalAZDeleteObject.Inc()
+	} else {
+		totalAZDeleteObjectErrors.Inc()
+	}
+}
+
+// AZHeadObjectCompleted updates metrics after a Azure head object request terminates
+func AZHeadObjectCompleted(err error) {
+	if err == nil {
+		totalAZHeadObject.Inc()
+	} else {
+		totalAZHeadObjectErrors.Inc()
+	}
+}
+
+// AZHeadContainerCompleted updates metrics after a Azure head container request terminates
+func AZHeadContainerCompleted(err error) {
+	if err == nil {
+		totalAZHeadContainer.Inc()
+	} else {
+		totalAZHeadContainerErrors.Inc()
+	}
+}
+
 // SSHCommandCompleted update metrics after an SSH command terminates
 func SSHCommandCompleted(err error) {
 	if err == nil {

templates/user.html

@@ -276,7 +276,7 @@
         <div class="col-sm-10">
             <select class="form-control" id="idFilesystem" name="fs_provider" onchange="onFilesystemChanged(this.value)">
                 <option value="0" {{if eq .User.FsConfig.Provider 0 }}selected{{end}}>local</option>
-                <option value="1" {{if eq .User.FsConfig.Provider 1 }}selected{{end}}>Amazon S3 (Compatible)</option>
+                <option value="1" {{if eq .User.FsConfig.Provider 1 }}selected{{end}}>AWS S3 (Compatible)</option>
                 <option value="2" {{if eq .User.FsConfig.Provider 2 }}selected{{end}}>Google Cloud Storage</option>
                 <option value="3" {{if eq .User.FsConfig.Provider 3 }}selected{{end}}>Azure Blob Storage</option>
             </select>

vfs/azblobfs.go

@@ -23,6 +23,7 @@ import (
 	"github.com/eikenb/pipeat"
 
 	"github.com/drakkan/sftpgo/logger"
+	"github.com/drakkan/sftpgo/metrics"
 	"github.com/drakkan/sftpgo/utils"
 	"github.com/drakkan/sftpgo/version"
 )
@@ -185,11 +186,13 @@ func (fs AzureBlobFs) Stat(name string) (os.FileInfo, error) {
 			Prefix: prefix,
 		})
 		if err != nil {
+			metrics.AZListObjectsCompleted(err)
 			return nil, err
 		}
 		marker = listBlob.NextMarker
 		for _, blobPrefix := range listBlob.Segment.BlobPrefixes {
 			if fs.isEqual(blobPrefix.Name, name) {
+				metrics.AZListObjectsCompleted(nil)
 				return NewFileInfo(name, true, 0, time.Now(), false), nil
 			}
 		}
@@ -203,11 +206,13 @@ func (fs AzureBlobFs) Stat(name string) (os.FileInfo, error) {
 				if blobInfo.Properties.ContentLength != nil {
 					size = *blobInfo.Properties.ContentLength
 				}
+				metrics.AZListObjectsCompleted(nil)
 				return NewFileInfo(name, isDir, size, blobInfo.Properties.LastModified, false), nil
 			}
 		}
 	}
 
+	metrics.AZListObjectsCompleted(nil)
 	return nil, errors.New("404 no such file or directory")
 }
 
@@ -242,6 +247,7 @@ func (fs AzureBlobFs) Open(name string, offset int64) (*os.File, *pipeat.PipeRea
 		n, err := io.Copy(w, body)
 		w.CloseWithError(err) //nolint:errcheck
 		fsLog(fs, logger.LevelDebug, "download completed, path: %#v size: %v, err: %v", name, n, err)
+		metrics.AZTransferCompleted(n, 1, err)
 	}()
 
 	return nil, r, cancelFn, nil
@@ -284,6 +290,7 @@ func (fs AzureBlobFs) Create(name string, flag int) (*os.File, *PipeWriter, func
 		r.CloseWithError(err) //nolint:errcheck
 		p.Done(err)
 		fsLog(fs, logger.LevelDebug, "upload completed, path: %#v, readed bytes: %v, err: %v", name, r.GetReadedBytes(), err)
+		metrics.AZTransferCompleted(r.GetReadedBytes(), 0, err)
 	}()
 
 	return nil, p, cancelFn, nil
@@ -322,6 +329,7 @@ func (fs AzureBlobFs) Rename(source, target string) error {
 
 	resp, err := dstBlobURL.StartCopyFromURL(ctx, srcURL, md, mac, bac)
 	if err != nil {
+		metrics.AZCopyObjectCompleted(err)
 		return err
 	}
 	copyStatus := resp.CopyStatus()
@@ -335,6 +343,7 @@ func (fs AzureBlobFs) Rename(source, target string) error {
 			// of them before giving up.
 			nErrors++
 			if ctx.Err() != nil || nErrors == 3 {
+				metrics.AZCopyObjectCompleted(err)
 				return err
 			}
 		} else {
@@ -342,8 +351,11 @@ func (fs AzureBlobFs) Rename(source, target string) error {
 		}
 	}
 	if copyStatus != azblob.CopyStatusSuccess {
-		return fmt.Errorf("Copy failed with status: %s", copyStatus)
+		err := fmt.Errorf("Copy failed with status: %s", copyStatus)
+		metrics.AZCopyObjectCompleted(err)
+		return err
 	}
+	metrics.AZCopyObjectCompleted(nil)
 	return fs.Remove(source, fi.IsDir())
 }
 
@@ -363,6 +375,7 @@ func (fs AzureBlobFs) Remove(name string, isDir bool) error {
 	defer cancelFn()
 
 	_, err := blobBlockURL.Delete(ctx, azblob.DeleteSnapshotsOptionNone, azblob.BlobAccessConditions{})
+	metrics.AZDeleteObjectCompleted(err)
 	return err
 }
 
@@ -444,6 +457,7 @@ func (fs AzureBlobFs) ReadDir(dirname string) ([]os.FileInfo, error) {
 			Prefix: prefix,
 		})
 		if err != nil {
+			metrics.AZListObjectsCompleted(err)
 			return nil, err
 		}
 		marker = listBlob.NextMarker
@@ -481,6 +495,7 @@ func (fs AzureBlobFs) ReadDir(dirname string) ([]os.FileInfo, error) {
 		}
 	}
 
+	metrics.AZListObjectsCompleted(nil)
 	return result, nil
 }
 
@@ -565,6 +580,7 @@ func (fs AzureBlobFs) ScanRootDirContents() (int, int64, error) {
 			Prefix: fs.config.KeyPrefix,
 		})
 		if err != nil {
+			metrics.AZListObjectsCompleted(err)
 			return numFiles, size, err
 		}
 		marker = listBlob.NextMarker
@@ -585,6 +601,7 @@ func (fs AzureBlobFs) ScanRootDirContents() (int, int64, error) {
 		}
 	}
 
+	metrics.AZListObjectsCompleted(nil)
 	return numFiles, size, nil
 }
 
@@ -644,6 +661,7 @@ func (fs AzureBlobFs) Walk(root string, walkFn filepath.WalkFunc) error {
 			Prefix: prefix,
 		})
 		if err != nil {
+			metrics.AZListObjectsCompleted(err)
 			return err
 		}
 		marker = listBlob.NextMarker
@@ -667,6 +685,7 @@ func (fs AzureBlobFs) Walk(root string, walkFn filepath.WalkFunc) error {
 		}
 	}
 
+	metrics.AZListObjectsCompleted(nil)
 	return walkFn(root, NewFileInfo(root, true, 0, time.Now(), false), nil)
 }
 
@@ -695,6 +714,7 @@ func (fs AzureBlobFs) GetMimeType(name string) (string, error) {
 
 	blobBlockURL := fs.containerURL.NewBlockBlobURL(name)
 	response, err := blobBlockURL.GetProperties(ctx, azblob.BlobAccessConditions{})
+	metrics.AZHeadObjectCompleted(err)
 	if err != nil {
 		return "", err
 	}
@@ -719,6 +739,7 @@ func (fs *AzureBlobFs) checkIfBucketExists() error {
 	defer cancelFn()
 
 	_, err := fs.containerURL.GetProperties(ctx, azblob.LeaseAccessConditions{})
+	metrics.AZHeadContainerCompleted(err)
 	return err
 }
 
@@ -790,7 +811,6 @@ func (fs *AzureBlobFs) handleMultipartUpload(ctx context.Context, reader io.Read
 			defer cancelFn()
 
 			_, err := blockBlobURL.StageBlock(innerCtx, blockID, bufferReader, azblob.LeaseAccessConditions{}, nil)
-			pool.releaseBuffer(buf)
 			if err != nil {
 				errOnce.Do(func() {
 					poolError = err
@@ -798,6 +818,7 @@ func (fs *AzureBlobFs) handleMultipartUpload(ctx context.Context, reader io.Read
 					poolCancel()
 				})
 			}
+			pool.releaseBuffer(buf)
 			<-guard
 		}(blockID, buf, n)
 	}
@@ -840,11 +861,13 @@ type bufferAllocator struct {
 	sync.Mutex
 	available  [][]byte
 	bufferSize int
+	finalized  bool
 }
 
 func newBufferAllocator(size int) *bufferAllocator {
 	return &bufferAllocator{
 		bufferSize: size,
+		finalized:  false,
 	}
 }
 
@@ -871,7 +894,7 @@ func (b *bufferAllocator) releaseBuffer(buf []byte) {
 	b.Lock()
 	defer b.Unlock()
 
-	if len(buf) != b.bufferSize {
+	if b.finalized || len(buf) != b.bufferSize {
 		return
 	}
 
@@ -883,4 +906,5 @@ func (b *bufferAllocator) free() {
 	defer b.Unlock()
 
 	b.available = nil
+	b.finalized = true
 }

vfs/gcsfs.go

@@ -610,6 +610,7 @@ func (fs GCSFs) GetMimeType(name string) (string, error) {
 	bkt := fs.svc.Bucket(fs.config.Bucket)
 	obj := bkt.Object(name)
 	attrs, err := obj.Attrs(ctx)
+	metrics.GCSHeadObjectCompleted(err)
 	if err != nil {
 		return "", err
 	}

vfs/s3fs.go

@@ -27,7 +27,7 @@ import (
 	"github.com/drakkan/sftpgo/version"
 )
 
-// S3Fs is a Fs implementation for Amazon S3 compatible object storage.
+// S3Fs is a Fs implementation for AWS S3 compatible object storages
 type S3Fs struct {
 	connectionID   string
 	localTempDir   string
@@ -598,6 +598,7 @@ func (fs S3Fs) GetMimeType(name string) (string, error) {
 		Bucket: aws.String(fs.config.Bucket),
 		Key:    aws.String(name),
 	})
+	metrics.S3HeadObjectCompleted(err)
 	if err != nil {
 		return "", err
 	}