package azuresink import ( "bytes" "context" "fmt" "github.com/seaweedfs/seaweedfs/weed/replication/repl_util" "net/http" "net/url" "strings" "time" "github.com/Azure/azure-storage-blob-go/azblob" "github.com/seaweedfs/seaweedfs/weed/filer" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/seaweedfs/weed/replication/sink" "github.com/seaweedfs/seaweedfs/weed/replication/source" "github.com/seaweedfs/seaweedfs/weed/util" ) type AzureSink struct { containerURL azblob.ContainerURL container string dir string filerSource *source.FilerSource isIncremental bool } func init() { sink.Sinks = append(sink.Sinks, &AzureSink{}) } func (g *AzureSink) GetName() string { return "azure" } func (g *AzureSink) GetSinkToDirectory() string { return g.dir } func (g *AzureSink) IsIncremental() bool { return g.isIncremental } func (g *AzureSink) Initialize(configuration util.Configuration, prefix string) error { g.isIncremental = configuration.GetBool(prefix + "is_incremental") return g.initialize( configuration.GetString(prefix+"account_name"), configuration.GetString(prefix+"account_key"), configuration.GetString(prefix+"container"), configuration.GetString(prefix+"directory"), ) } func (g *AzureSink) SetSourceFiler(s *source.FilerSource) { g.filerSource = s } func (g *AzureSink) initialize(accountName, accountKey, container, dir string) error { g.container = container g.dir = dir // Use your Storage account's name and key to create a credential object. credential, err := azblob.NewSharedKeyCredential(accountName, accountKey) if err != nil { glog.Fatalf("failed to create Azure credential with account name:%s: %v", accountName, err) } // Create a request pipeline that is used to process HTTP(S) requests and responses. p := azblob.NewPipeline(credential, azblob.PipelineOptions{}) // Create an ServiceURL object that wraps the service URL and a request pipeline. u, _ := url.Parse(fmt.Sprintf("https://%s.blob.core.windows.net", accountName)) serviceURL := azblob.NewServiceURL(*u, p) g.containerURL = serviceURL.NewContainerURL(g.container) return nil } func (g *AzureSink) DeleteEntry(key string, isDirectory, deleteIncludeChunks bool, signatures []int32) error { key = cleanKey(key) if isDirectory { key = key + "/" } if _, err := g.containerURL.NewBlobURL(key).Delete(context.Background(), azblob.DeleteSnapshotsOptionInclude, azblob.BlobAccessConditions{}); err != nil { return fmt.Errorf("azure delete %s/%s: %v", g.container, key, err) } return nil } func (g *AzureSink) CreateEntry(key string, entry *filer_pb.Entry, signatures []int32) error { key = cleanKey(key) if entry.IsDirectory { return nil } totalSize := filer.FileSize(entry) chunkViews := filer.ViewFromChunks(g.filerSource.LookupFileId, entry.GetChunks(), 0, int64(totalSize)) // Create a URL that references a to-be-created blob in your // Azure Storage account's container. appendBlobURL := g.containerURL.NewAppendBlobURL(key) accessCondition := azblob.BlobAccessConditions{} if entry.Attributes!=nil && entry.Attributes.Mtime>0 { accessCondition.ModifiedAccessConditions.IfUnmodifiedSince = time.Unix(entry.Attributes.Mtime, 0) } res, err := appendBlobURL.Create(context.Background(), azblob.BlobHTTPHeaders{}, azblob.Metadata{}, accessCondition, azblob.BlobTagsMap{}, azblob.ClientProvidedKeyOptions{}, azblob.ImmutabilityPolicyOptions{}) if res != nil && res.StatusCode() == http.StatusPreconditionFailed { glog.V(0).Infof("skip overwriting %s/%s: %v", g.container, key, err) return nil } if err != nil { return err } writeFunc := func(data []byte) error { _, writeErr := appendBlobURL.AppendBlock(context.Background(), bytes.NewReader(data), azblob.AppendBlobAccessConditions{}, nil, azblob.ClientProvidedKeyOptions{}) return writeErr } if len(entry.Content) > 0 { return writeFunc(entry.Content) } if err := repl_util.CopyFromChunkViews(chunkViews, g.filerSource, writeFunc); err != nil { return err } return nil } func (g *AzureSink) UpdateEntry(key string, oldEntry *filer_pb.Entry, newParentPath string, newEntry *filer_pb.Entry, deleteIncludeChunks bool, signatures []int32) (foundExistingEntry bool, err error) { key = cleanKey(key) return true, g.CreateEntry(key, newEntry, signatures) } func cleanKey(key string) string { if strings.HasPrefix(key, "/") { key = key[1:] } return key }