Adding copy operation to Azure Blob Storage, AWS S3, and GCP Bucket bindings

bindings/aws/s3/metadata.yaml

@@ -19,6 +19,8 @@ binding:
       description: "Delete blob"
     - name: list
       description: "List blob"
+    - name: copy
+      description: "Copy blob"
 capabilities: []
 builtinAuthenticationProfiles:
   - name: "aws"

bindings/aws/s3/s3.go

@@ -157,6 +157,7 @@ func (s *AWSS3) Operations() []bindings.OperationKind {
 		bindings.GetOperation,
 		bindings.DeleteOperation,
 		bindings.ListOperation,
+		bindings.CopyOperation,
 		presignOperation,
 	}
 }
@@ -240,7 +241,7 @@ func (s *AWSS3) create(ctx context.Context, req *bindings.InvokeRequest) (*bindi
 	}, nil
 }
 
-func (s *AWSS3) presign(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+func (s *AWSS3) presign(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
 	metadata, err := s.metadata.mergeWithRequestMetadata(req)
 	if err != nil {
 		return nil, fmt.Errorf("s3 binding error: error merging metadata: %w", err)
@@ -389,6 +390,53 @@ func (s *AWSS3) list(ctx context.Context, req *bindings.InvokeRequest) (*binding
 	}, nil
 }
 
+func (s *AWSS3) copy(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+	_, err := s.metadata.mergeWithRequestMetadata(req)
+	if err != nil {
+		return nil, fmt.Errorf("s3 binding error: error merging metadata: %w", err)
+	}
+
+	source := req.Metadata["source"]
+	if source == "" {
+		return nil, fmt.Errorf("s3 binding error: required metadata 'source' missing")
+	}
+
+	destinationBucket := req.Metadata["bucket"]
+	if destinationBucket == "" {
+		return nil, fmt.Errorf("s3 binding error: required metadata 'bucket' missing")
+	}
+
+	destinationKey := req.Metadata["destinationKey"]
+	if destinationKey == "" {
+		return nil, fmt.Errorf("s3 binding error: required metadata 'destinationKey' missing")
+	}
+
+	_, err = s.s3Client.CopyObject(&s3.CopyObjectInput{
+		// Bucket is the destination bucket.
+		Bucket: ptr.Of(destinationBucket),
+
+		// CopySource is the source bucket and key.
+		CopySource: ptr.Of(source),
+
+		// Key is the key of the destination object.
+		Key: ptr.Of(destinationKey),
+
+		// MetadataDirective is the directive to apply to the metadata of the destination object.
+		MetadataDirective: ptr.Of(s3.MetadataDirectiveCopy),
+	})
+	if err != nil {
+		return nil, fmt.Errorf("s3 binding error: copy operation failed: %w", err)
+	}
+
+	return &bindings.InvokeResponse{
+		Metadata: map[string]string{
+			"source":            source,
+			"destinationBucket": destinationBucket,
+			"destinationKey":    destinationKey,
+		},
+	}, nil
+}
+
 func (s *AWSS3) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
 	switch req.Operation {
 	case bindings.CreateOperation:
@@ -399,8 +447,10 @@ func (s *AWSS3) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*bindi
 		return s.delete(ctx, req)
 	case bindings.ListOperation:
 		return s.list(ctx, req)
+	case bindings.CopyOperation:
+		return s.copy(req)
 	case presignOperation:
-		return s.presign(ctx, req)
+		return s.presign(req)
 	default:
 		return nil, fmt.Errorf("s3 binding error: unsupported operation %s", req.Operation)
 	}

bindings/azure/blobstorage/blobstorage.go

@@ -22,17 +22,19 @@ import (
 	"io"
 	"reflect"
 	"strconv"
+	"time"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blob"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/bloberror"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blockblob"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/container"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/sas"
 	"github.com/google/uuid"
 
 	"github.com/dapr/components-contrib/bindings"
 	storagecommon "github.com/dapr/components-contrib/common/component/azure/blobstorage"
-	contribMetadata "github.com/dapr/components-contrib/metadata"
+	contribmetadata "github.com/dapr/components-contrib/metadata"
 	"github.com/dapr/kit/logger"
 	"github.com/dapr/kit/ptr"
 )
@@ -57,8 +59,9 @@ const (
 	// Specifies the maximum number of blobs to return, including all BlobPrefix elements. If the request does not
 	// specify maxresults the server will return up to 5,000 items.
 	// See: https://docs.microsoft.com/en-us/rest/api/storageservices/list-blobs#uri-parameters
-	maxResults  int32 = 5000
-	endpointKey       = "endpoint"
+	maxResults       int32 = 5000
+	endpointKey            = "endpoint"
+	presignOperation       = "presign"
 )
 
 var ErrMissingBlobName = errors.New("blobName is a required attribute")
@@ -76,6 +79,10 @@ type createResponse struct {
 	BlobName string `json:"blobName"`
 }
 
+type presignResponse struct {
+	PresignURL string `json:"presignURL"`
+}
+
 type listInclude struct {
 	Copy             bool `json:"copy"`
 	Metadata         bool `json:"metadata"`
@@ -112,6 +119,7 @@ func (a *AzureBlobStorage) Operations() []bindings.OperationKind {
 		bindings.GetOperation,
 		bindings.DeleteOperation,
 		bindings.ListOperation,
+		bindings.CopyOperation,
 	}
 }
 
@@ -344,6 +352,102 @@ func (a *AzureBlobStorage) list(ctx context.Context, req *bindings.InvokeRequest
 	}, nil
 }
 
+func (a *AzureBlobStorage) copy(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+	sourceBlobName := req.Metadata["sourceBlobName"]
+	if sourceBlobName == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata 'sourceBlobName' missing")
+	}
+
+	destinationBlobName := req.Metadata["destinationBlobName"]
+	if destinationBlobName == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata 'destinationBlobName' missing")
+	}
+
+	sourceContainerName := req.Metadata["sourceContainerName"]
+	if sourceContainerName == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata 'sourceContainerName' missing")
+	}
+
+	destinationContainerName := req.Metadata["destinationContainerName"]
+	if destinationContainerName == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata 'destinationContainerName' missing")
+	}
+
+	sourceBlobClient := a.containerClient.NewBlockBlobClient(fmt.Sprintf("%s/%s", sourceContainerName, sourceBlobName))
+	destinationBlobClient := a.containerClient.NewBlockBlobClient(fmt.Sprintf("%s/%s", destinationContainerName, destinationBlobName))
+
+	copyURL := sourceBlobClient.URL()
+	_, err := destinationBlobClient.StartCopyFromURL(ctx, copyURL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("azure blob storage error: copy operation failed: %w", err)
+	}
+
+	return &bindings.InvokeResponse{
+		Metadata: map[string]string{
+			"sourceBlobName":      sourceBlobName,
+			"destinationBlobName": destinationBlobName,
+		},
+	}, nil
+}
+
+func (a *AzureBlobStorage) presign(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+	blobName := req.Metadata[metadataKeyBlobName]
+	if blobName == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata '%s' missing", metadataKeyBlobName)
+	}
+
+	presignTTL := req.Metadata["presignTTL"]
+	if presignTTL == "" {
+		return nil, fmt.Errorf("azure blob storage error: required metadata 'presignTTL' missing")
+	}
+
+	ttl, err := time.ParseDuration(presignTTL)
+	if err != nil {
+		return nil, fmt.Errorf("azure blob storage error: cannot parse duration %s: %w", presignTTL, err)
+	}
+
+	blobClient := a.containerClient.NewBlockBlobClient(blobName)
+	sasURL, err := a.generateSASURL(blobClient, ttl)
+	if err != nil {
+		return nil, fmt.Errorf("azure blob storage error: %w", err)
+	}
+
+	jsonResponse, err := json.Marshal(presignResponse{
+		PresignURL: sasURL,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("s3 binding error: error marshalling presign response: %w", err)
+	}
+
+	return &bindings.InvokeResponse{
+		Data: jsonResponse,
+	}, nil
+}
+
+func (a *AzureBlobStorage) generateSASURL(blobClient *blockblob.Client, ttl time.Duration) (string, error) {
+	permissions := sas.AccountPermissions{
+		Read: true,
+	}
+
+	sasValues := sas.AccountSignatureValues{
+		Protocol:    sas.ProtocolHTTPS,
+		ExpiryTime:  time.Now().UTC().Add(ttl),
+		Permissions: permissions.String(),
+	}
+
+	credential, err := azblob.NewSharedKeyCredential(a.metadata.AccountName, a.metadata.AccountKey)
+	if err != nil {
+		return "", fmt.Errorf("error creating shared key credential: %w", err)
+	}
+
+	sasQueryParams, err := sasValues.SignWithSharedKey(credential)
+	if err != nil {
+		return "", fmt.Errorf("error generating SAS query parameters: %w", err)
+	}
+
+	return fmt.Sprintf("%s?%s", blobClient.URL(), sasQueryParams.Encode()), nil
+}
+
 func (a *AzureBlobStorage) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
 	switch req.Operation {
 	case bindings.CreateOperation:
@@ -354,6 +458,10 @@ func (a *AzureBlobStorage) Invoke(ctx context.Context, req *bindings.InvokeReque
 		return a.delete(ctx, req)
 	case bindings.ListOperation:
 		return a.list(ctx, req)
+	case bindings.CopyOperation:
+		return a.copy(ctx, req)
+	case presignOperation:
+		return a.presign(req)
 	default:
 		return nil, fmt.Errorf("unsupported operation %s", req.Operation)
 	}
@@ -371,9 +479,9 @@ func (a *AzureBlobStorage) isValidDeleteSnapshotsOptionType(accessType azblob.De
 }
 
 // GetComponentMetadata returns the metadata of the component.
-func (a *AzureBlobStorage) GetComponentMetadata() (metadataInfo contribMetadata.MetadataMap) {
+func (a *AzureBlobStorage) GetComponentMetadata() (metadataInfo contribmetadata.MetadataMap) {
 	metadataStruct := storagecommon.BlobStorageMetadata{}
-	contribMetadata.GetMetadataInfoFromStructType(reflect.TypeOf(metadataStruct), &metadataInfo, contribMetadata.BindingType)
+	contribmetadata.GetMetadataInfoFromStructType(reflect.TypeOf(metadataStruct), &metadataInfo, contribmetadata.BindingType)
 	return
 }
 

bindings/azure/blobstorage/metadata.yaml

@@ -19,6 +19,8 @@ binding:
       description: "Delete blob"
     - name: list
       description: "List blob"
+    - name: copy
+      description: "Copy blob"
 capabilities: []
 builtinAuthenticationProfiles:
   - name: "azuread"

bindings/gcp/bucket/bucket.go

@@ -137,6 +137,7 @@ func (g *GCPStorage) Operations() []bindings.OperationKind {
 		bindings.GetOperation,
 		bindings.DeleteOperation,
 		bindings.ListOperation,
+		bindings.CopyOperation,
 		signOperation,
 	}
 }
@@ -153,8 +154,10 @@ func (g *GCPStorage) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*
 		return g.delete(ctx, req)
 	case bindings.ListOperation:
 		return g.list(ctx, req)
+	case bindings.CopyOperation:
+		return g.copy(ctx, req)
 	case signOperation:
-		return g.sign(ctx, req)
+		return g.sign(req)
 	default:
 		return nil, fmt.Errorf("unsupported operation %s", req.Operation)
 	}
@@ -307,6 +310,33 @@ func (g *GCPStorage) list(ctx context.Context, req *bindings.InvokeRequest) (*bi
 	}, nil
 }
 
+func (g *GCPStorage) copy(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+	sourceKey := req.Metadata["sourceKey"]
+	if sourceKey == "" {
+		return nil, fmt.Errorf("gcp bucket binding error: required metadata 'sourceKey' missing")
+	}
+
+	destinationKey := req.Metadata["destinationKey"]
+	if destinationKey == "" {
+		return nil, fmt.Errorf("gcp bucket binding error: required metadata 'destinationKey' missing")
+	}
+
+	src := g.client.Bucket(g.metadata.Bucket).Object(sourceKey)
+	dst := g.client.Bucket(g.metadata.Bucket).Object(destinationKey)
+
+	_, err := dst.CopierFrom(src).Run(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("gcp bucket binding error: copy operation failed: %w", err)
+	}
+
+	return &bindings.InvokeResponse{
+		Metadata: map[string]string{
+			"sourceKey":      sourceKey,
+			"destinationKey": destinationKey,
+		},
+	}, nil
+}
+
 func (g *GCPStorage) Close() error {
 	return g.client.Close()
 }
@@ -345,7 +375,7 @@ func (g *GCPStorage) GetComponentMetadata() (metadataInfo metadata.MetadataMap)
 	return
 }
 
-func (g *GCPStorage) sign(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
+func (g *GCPStorage) sign(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
 	metadata, err := g.metadata.mergeWithRequestMetadata(req)
 	if err != nil {
 		return nil, fmt.Errorf("gcp binding error. error merge metadata : %w", err)

bindings/gcp/bucket/bucket_test.go

@@ -76,10 +76,10 @@ func TestParseMetadata(t *testing.T) {
 	t.Run("check backward compatibility", func(t *testing.T) {
 		gs := GCPStorage{logger: logger.NewLogger("test")}
 
-		request := bindings.InvokeRequest{}
-		request.Operation = bindings.CreateOperation
-		request.Metadata = map[string]string{
-			"name": "my_file.txt",
+		request := bindings.InvokeRequest{
+			Metadata: map[string]string{
+				"name": "my_file.txt",
+			},
 		}
 		result := gs.handleBackwardCompatibilityForMetadata(request.Metadata)
 		assert.NotEmpty(t, result["key"])

bindings/requests.go

@@ -34,6 +34,7 @@ const (
 	CreateOperation OperationKind = "create"
 	DeleteOperation OperationKind = "delete"
 	ListOperation   OperationKind = "list"
+	CopyOperation   OperationKind = "copy"
 )
 
 // GetMetadataAsBool parses metadata as bool.