Halaman ini diterjemahkan oleh Cloud Translation API.

Transfer berbasis peristiwa dari Cloud Storage

Layanan Transfer Penyimpanan dapat memproses notifikasi peristiwa di Google Cloud untuk mentransfer data yang telah ditambahkan atau diperbarui di bucket Cloud Storage secara otomatis. Pelajari lebih lanjut manfaat transfer berbasis peristiwa.

Transfer berbasis peristiwa dari Cloud Storage menggunakan notifikasi Pub/Sub untuk mengetahui kapan objek di bucket sumber telah diubah atau ditambahkan. Penghapusan objek tidak terdeteksi; menghapus objek di sumber tidak akan menghapus objek terkait di bucket tujuan.

Konfigurasikan izin

Temukan nama agen layanan Storage Transfer Service untuk project Anda:
1. Buka halaman referensi googleServiceAccounts.get.
  
  Panel interaktif akan terbuka, berjudul Coba metode ini.
2. Di panel, pada bagian Request parameters, masukkan ID project Anda. Project yang Anda tentukan di sini harus berupa project yang Anda gunakan untuk mengelola Storage Transfer Service, yang mungkin berbeda dengan project bucket sumber.
3. Klik Jalankan.
Email agen layanan Anda ditampilkan sebagai nilai accountEmail. Salin nilai ini.

Email agen layanan menggunakan format project-PROJECT_NUMBER@storage-transfer-service.iam.gserviceaccount.com.
Berikan peran Pub/Sub Subscriber ke agen layanan Storage Transfer Service.
Cloud Console
Ikuti petunjuk di bagian Mengontrol akses melalui konsol Google Cloud untuk memberikan peran Pub/Sub Subscriber ke layanan Storage Transfer Service. Peran ini dapat diberikan di tingkat topik, langganan, atau project.
gcloud CLI
Ikuti petunjuk di bagian Menetapkan kebijakan untuk menambahkan binding berikut:
```
{
  "role": "roles/pubsub.subscriber",
  "members": [
    "serviceAccount:project-PROJECT_NUMBER@storage-transfer-service.iam.gserviceaccount.com"
}
```

Mengonfigurasi Pub/Sub

Pastikan Anda telah memenuhi Prasyarat untuk menggunakan Pub/Sub dengan Cloud Storage.

Konfigurasikan notifikasi Pub/Sub untuk Cloud Storage:

gcloud storage buckets notifications create gs://BUCKET_NAME --topic=TOPIC_NAME

Buat langganan pull untuk topik:

gcloud pubsub subscriptions create SUBSCRIPTION_ID --topic=TOPIC_NAME --ack-deadline=300

Membuat tugas transfer

Anda dapat menggunakan REST API atau konsol Google Cloud untuk membuat tugas transfer berbasis peristiwa.

Jangan sertakan informasi sensitif seperti informasi identitas pribadi (PII) atau data keamanan dalam nama tugas transfer Anda. Nama resource dapat di-propagasi ke nama resource Google Cloud lainnya dan dapat diekspos ke sistem internal Google di luar project Anda.

Cloud Console

Buka halaman Create transfer job di Konsol Google Cloud.

Buka Buat tugas transfer
Pilih Cloud Storage sebagai sumber dan tujuan.
Sebagai Scheduling mode, pilih Event-driven, lalu klik Next step.
Pilih bucket sumber untuk transfer ini.
Di bagian Aliran peristiwa, masukkan nama langganan:

projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID
Secara opsional, tentukan filter, lalu klik Langkah berikutnya.
Pilih bucket tujuan untuk transfer ini.
Secara opsional, masukkan waktu mulai dan berakhir untuk transfer. Jika Anda tidak menentukan waktu, transfer akan segera dimulai dan akan berjalan hingga dihentikan secara manual.
Tentukan opsi transfer. Informasi selengkapnya tersedia di halaman Buat transfer.
Klik Create.

Setelah dibuat, tugas transfer akan mulai berjalan dan pemroses peristiwa menunggu notifikasi di langganan Pub/Sub. Halaman detail tugas menampilkan satu operasi setiap jam, dan menyertakan detail tentang data yang ditransfer untuk setiap tugas.

REST

Untuk membuat transfer berbasis peristiwa menggunakan REST API, kirim objek JSON berikut ke endpoint transferJobs.create:

transfer_job {
  "description": "YOUR DESCRIPTION",
  "status": "ENABLED",
  "projectId": "PROJECT_ID",
  "transferSpec" {
    "gcsDataSource" {
      "bucketName": "GCS_SOURCE_NAME"
    },
    "gcsDataSink": {
        "bucketName": "GCS_SINK_NAME"
    }
  }
  "eventStream" {
    "name": "projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID",
    "eventStreamStartTime": "2022-12-02T01:00:00+00:00",
    "eventStreamExpirationTime": "2023-01-31T01:00:00+00:00"
  }
}

eventStreamStartTime dan eventStreamExpirationTime bersifat opsional. Jika waktu mulai dihilangkan, transfer akan langsung dimulai; jika waktu akhir dihilangkan, transfer akan berlanjut hingga dihentikan secara manual.

Library klien

Go

Untuk mempelajari cara menginstal dan menggunakan library klien untuk Storage Transfer Service, lihat library klien Storage Transfer Service. Untuk mengetahui informasi selengkapnya, lihat dokumentasi referensi Storage Transfer Service Go API.

Untuk melakukan autentikasi ke Storage Transfer Service, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, lihat Menyiapkan autentikasi untuk lingkungan pengembangan lokal.


func createEventDrivenGCSTransfer(w io.Writer, projectID string, gcsSourceBucket string, gcsSinkBucket string, pubSubId string) (*storagetransferpb.TransferJob, error) {
	// Your Google Cloud Project ID.
	// projectID := "my-project-id"

	// The name of the source GCS bucket.
	// gcsSourceBucket := "my-source-bucket"

	// The name of the GCS bucket to transfer objects to.
	// gcsSinkBucket := "my-sink-bucket"

	// The Pub/Sub topic to subscribe the event driven transfer to.
	// pubSubID := "projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID"

	ctx := context.Background()
	client, err := storagetransfer.NewClient(ctx)
	if err != nil {
		return nil, fmt.Errorf("storagetransfer.NewClient: %w", err)
	}
	defer client.Close()

	req := &storagetransferpb.CreateTransferJobRequest{
		TransferJob: &storagetransferpb.TransferJob{
			ProjectId: projectID,
			TransferSpec: &storagetransferpb.TransferSpec{
				DataSource: &storagetransferpb.TransferSpec_GcsDataSource{
					GcsDataSource: &storagetransferpb.GcsData{BucketName: gcsSourceBucket}},
				DataSink: &storagetransferpb.TransferSpec_GcsDataSink{
					GcsDataSink: &storagetransferpb.GcsData{BucketName: gcsSinkBucket}},
			},
			EventStream: &storagetransferpb.EventStream{Name: pubSubId},
			Status:      storagetransferpb.TransferJob_ENABLED,
		},
	}
	resp, err := client.CreateTransferJob(ctx, req)
	if err != nil {
		return nil, fmt.Errorf("failed to create transfer job: %w", err)
	}

	fmt.Fprintf(w, "Created an event driven transfer job from %v to %v subscribed to %v with name %v", gcsSourceBucket, gcsSinkBucket, pubSubId, resp.Name)
	return resp, nil
}

Java


import com.google.storagetransfer.v1.proto.StorageTransferServiceClient;
import com.google.storagetransfer.v1.proto.TransferProto;
import com.google.storagetransfer.v1.proto.TransferTypes;

public class CreateEventDrivenGcsTransfer {
  public static void main(String[] args) throws Exception {
    // Your Google Cloud Project ID
    String projectId = "your-project-id";

    // The name of the GCS AWS bucket to transfer data from
    String gcsSourceBucket = "your-gcs-source-bucket";

    // The name of the GCS bucket to transfer data to
    String gcsSinkBucket = "your-gcs-sink-bucket";

    // The ARN of the PubSub queue to subscribe to
    String sqsQueueArn = "projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID";

    createEventDrivenGcsTransfer(projectId, gcsSourceBucket, gcsSinkBucket, sqsQueueArn);
  }

  public static void createEventDrivenGcsTransfer(
      String projectId, String gcsSourceBucket, String gcsSinkBucket, String pubSubId)
      throws Exception {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources,
    // or use "try-with-close" statement to do this automatically.
    try (StorageTransferServiceClient storageTransfer = StorageTransferServiceClient.create()) {

      TransferTypes.TransferJob transferJob =
          TransferTypes.TransferJob.newBuilder()
              .setProjectId(projectId)
              .setTransferSpec(
                  TransferTypes.TransferSpec.newBuilder()
                      .setGcsDataSource(
                          TransferTypes.GcsData.newBuilder().setBucketName(gcsSourceBucket))
                      .setGcsDataSink(
                          TransferTypes.GcsData.newBuilder().setBucketName(gcsSinkBucket)))
              .setStatus(TransferTypes.TransferJob.Status.ENABLED)
              .setEventStream(TransferTypes.EventStream.newBuilder().setName(pubSubId).build())
              .build();

      TransferTypes.TransferJob response =
          storageTransfer.createTransferJob(
              TransferProto.CreateTransferJobRequest.newBuilder()
                  .setTransferJob(transferJob)
                  .build());

      System.out.println(
          "Created a transfer job between from "
              + gcsSourceBucket
              + " to "
              + gcsSinkBucket
              + " subscribed to "
              + pubSubId
              + " with name "
              + response.getName());
    }
  }
}

Node.js


// Imports the Google Cloud client library
const {
  StorageTransferServiceClient,
} = require('@google-cloud/storage-transfer');

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The ID of the Google Cloud Platform Project that owns the job
// projectId = 'my-project-id'

// Google Cloud Storage source bucket name
// gcsSourceBucket = 'my-gcs-source-bucket'

// Google Cloud Storage destination bucket name
// gcsSinkBucket = 'my-gcs-destination-bucket'

// The subscription ID to a Pubsub queue to track
// pubsubId = 'projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID'

// Creates a client
const client = new StorageTransferServiceClient();

/**
 * Creates an event driven transfer that tracks a Pubsub subscription.
 */
async function createEventDrivenGcsTransfer() {
  const [transferJob] = await client.createTransferJob({
    transferJob: {
      projectId,
      status: 'ENABLED',
      transferSpec: {
        gcsDataSource: {
          bucketName: gcsSourceBucket,
        },
        gcsDataSink: {
          bucketName: gcsSinkBucket,
        },
      },
      eventStream: {
        name: pubsubId,
      },
    },
  });

  console.log(
    `Created an event driven transfer from '${gcsSourceBucket}' to '${gcsSinkBucket}' with name ${transferJob.name}`
  );
}

createEventDrivenGcsTransfer();

Python


from google.cloud import storage_transfer


def create_event_driven_gcs_transfer(
    project_id: str,
    description: str,
    source_bucket: str,
    sink_bucket: str,
    pubsub_id: str,
):
    """Create an event driven transfer between two GCS buckets that tracks a PubSub subscription"""

    client = storage_transfer.StorageTransferServiceClient()

    # The ID of the Google Cloud Platform Project that owns the job
    # project_id = 'my-project-id'

    # A description of this job
    # description = 'Creates an event-driven transfer that tracks a pubsub subscription'

    # Google Cloud Storage source bucket name
    # source_bucket = 'my-gcs-source-bucket'

    # Google Cloud Storage destination bucket name
    # sink_bucket = 'my-gcs-destination-bucket'

    # The Pubsub Subscription ID to track
    # pubsub_id = 'projects/PROJECT_NAME/subscriptions/SUBSCRIPTION_ID'

    transfer_job_request = storage_transfer.CreateTransferJobRequest(
        {
            "transfer_job": {
                "project_id": project_id,
                "description": description,
                "status": storage_transfer.TransferJob.Status.ENABLED,
                "transfer_spec": {
                    "gcs_data_source": {
                        "bucket_name": source_bucket,
                    },
                    "gcs_data_sink": {
                        "bucket_name": sink_bucket,
                    },
                },
                "event_stream": {
                    "name": pubsub_id,
                },
            },
        }
    )

    result = client.create_transfer_job(transfer_job_request)
    print(f"Created transferJob: {result.name}")

Transfer berbasis peristiwa dari Cloud Storage

Konfigurasikan izin

Cloud Console

gcloud CLI

Mengonfigurasi Pub/Sub

Membuat tugas transfer

Cloud Console

REST

Library klien

Go

Java

Node.js

Python

`gcloud` CLI