Data replication by using OSS SDK for Python 2.0

Updated at:

Data replication automatically replicates objects and object operations, such as creation, overwriting, and deletion, from a source bucket to a destination bucket. Object Storage Service (OSS) supports cross-region replication (CRR) and same-region replication (SRR).

Usage notes

  • The sample code in this topic uses the region ID cn-hangzhou of the China (Hangzhou) region. By default, the public endpoint is used to access resources in a bucket. If you want to access resources in the bucket from other Alibaba Cloud services in the same region in which the bucket is located, use an internal endpoint. For more information about OSS regions and endpoints, see Regions and endpoints.

  • By default, an Alibaba Cloud account has permissions required for data replication. If you want to replicate data as a RAM user or by using temporary access credentials provided by Security Token Service (STS), you must have the required permissions.

    • To enable data replication, you must have the oss:PutBucketReplication permission.

    • To enable or disable the replication time control (RTC) feature, you must have the oss:PutBucketRtc permission.

    • To query data replication rules, you must have the oss:GetBucketReplication permission.

    • To query available destination regions for data replication, you must have the oss:GetBucketReplicationLocation permission.

    • To query the progress of a data replication task, you must have the oss:GetBucketReplicationProgress permission.

    • To disable data replication, you must have the oss:DeleteBucketReplication permission.

Sample code

Enable data replication

Important

Before you enable data replication, make sure that both the source bucket and the destination bucket are in the unversioned or versioning-enabled state.

The following sample code enables data replication and creates a data replication task that replicates data from a source bucket to a destination bucket in the same region or a different region:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="put bucket replication sample")
# Specify the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')
parser.add_argument('--sync_role', help='The role that you want to authorize OSS to use to replicate data', required=True)
parser.add_argument('--target_bucket', help='The destination bucket to which data is replicated', required=True)
parser.add_argument('--target_location', help='The region in which the destination bucket is located', required=True)

def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables for authentication.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()
    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider
    # Specify the region.
    cfg.region = args.region
    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Configure and execute the PutBucketReplication request.
    result = client.put_bucket_replication(oss.PutBucketReplicationRequest(
            bucket=args.bucket,  # The name of the source bucket.
            replication_configuration=oss.ReplicationConfiguration(
                rules=[oss.ReplicationRule(
                    source_selection_criteria=oss.ReplicationSourceSelectionCriteria(
                        sse_kms_encrypted_objects=oss.SseKmsEncryptedObjects(
                            status=oss.StatusType.ENABLED,
                        ),
                    ),
                    rtc=oss.ReplicationTimeControl(
                        status='disabled',  # Disable RTC.
                    ),
                    destination=oss.ReplicationDestination(
                        bucket=args.target_bucket,  # The name of the destination bucket.
                        location=args.target_location,  # The region of the destination bucket.
                        transfer_type=oss.TransferType.INTERNAL,  # The transfer type.
                    ),
                    historical_object_replication=oss.HistoricalObjectReplicationType.DISABLED,  # Forbid replication of historical data.
                    sync_role=args.sync_role,  # The role for data replication.
                    status='Disabled',  # Disable the rule.
                    prefix_set=oss.ReplicationPrefixSet(
                        prefixs=['aaa/', 'bbb/'],  # The prefixes in the names of objects to be replicated.
                    ),
                    action='ALL',  # All operations.
                )],
            ),
    ))

    # Display the HTTP status code and request ID.
    print(f'status code: {result.status_code}, request id: {result.request_id}')

if __name__ == "__main__":
    main()

Query data replication rules

The following code queries the data replication rules for a bucket:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="get bucket replication sample")
# Add the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')

def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()
    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider
    # Specify the region.
    cfg.region = args.region
    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Query the replication rules for the bucket.
    result = client.get_bucket_replication(oss.GetBucketReplicationRequest(
            bucket=args.bucket,
    ))

    # Display the basic response information.
    print(f'status code: {result.status_code},'
          f' request id: {result.request_id},'
          f' replication configuration: {result.replication_configuration}')

    # If there are data replication rules, display rule details.
    if result.replication_configuration.rules:
        for r in result.replication_configuration.rules:
            print(f'result: source selection criteria: {r.source_selection_criteria}, '
                  f'rtc: {r.rtc}, destination: {r.destination}, '
                  f'historical object replication: {r.historical_object_replication}, '
                  f'sync role: {r.sync_role}, status: {r.status}, '
                  f'encryption configuration: {r.encryption_configuration}, '
                  f'id: {r.id}, prefix set: {r.prefix_set}, action: {r.action}')

if __name__ == "__main__":
    main()

Enable or disable the RTC feature

The following sample code enables or disables the RTC feature for a CRR rule:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="put bucket rtc sample")

# Add the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')
parser.add_argument('--status', help='Specifies whether to enable RTC. Valid values: disabled, enabled', default='disabled')
parser.add_argument('--rule_id', help='The ID of the data replication rule for which you want to configure RTC.', required=True)

def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()
    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider
    # Specify the region.
    cfg.region = args.region
    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Create an RTS state configuration and apply it to the specified bucket.
    result = client.put_bucket_rtc(oss.PutBucketRtcRequest(
            bucket=args.bucket,
            rtc_configuration=oss.RtcConfiguration(
                rtc=oss.ReplicationTimeControl(
                    status=args.status,
                ),
                id=args.rule_id,
            ),
    ))

    # Display the basic response information.
    print(f'status code: {result.status_code},'
          f' request id: {result.request_id}')

if __name__ == "__main__":
    main()

Query the regions to which data can be replicated

The following sample code queries the regions to which data can be replicated from the specified source bucket:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="get bucket replication location sample")
# Add the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')


def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()
    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider
    # Specify the region.
    cfg.region = args.region
    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Query the regions to which data in the specified bucket can be replicated.
    result = client.get_bucket_replication_location(oss.GetBucketReplicationLocationRequest(
            bucket=args.bucket,
    ))

    # Display the basic response information.
    print(f'status code: {result.status_code},'
          f' request id: {result.request_id},'
          f' replication location: {result.replication_location},'
          f' location transfer type constraint: {result.replication_location.location_transfer_type_constraint},'
          # f' location: {result.replication_location.location_transfer_type_constraint.location_transfer_types[0].location},'
          # f' transfer types: {result.replication_location.location_transfer_type_constraint.location_transfer_types[0].transfer_types},'
          # f' location: {result.replication_location.location_transfer_type_constraint.location_transfer_types[1].location},'
          # f' transfer types: {result.replication_location.location_transfer_type_constraint.location_transfer_types[1].transfer_types},'
          f' locationrtc constraint: {result.replication_location.locationrtc_constraint},'
    )

    # If restrictions on destination regions for data replication exist, display region details and transfer types.
    if result.replication_location.location_transfer_type_constraint.location_transfer_types:
        for r in result.replication_location.location_transfer_type_constraint.location_transfer_types:
            print(f'result: location: {r.location}, transfer types: {r.transfer_types}')

if __name__ == "__main__":
    main()

Query the progress of a data replication task

Note

You can query the progress of historical data replication tasks and incremental data replication tasks.

  • The progress of a historical data replication task is expressed as a percentage. You can query the progress of historical data replication tasks only for buckets for which historical data replication is enabled.

  • The progress of an incremental data replication task is expressed as a point in time. Data that is stored in the source bucket before the point in time is replicated.

The following sample code queries the progress of the data replication task that has a specific replication rule ID for a bucket:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="get bucket replication progress sample")
# Add the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')
parser.add_argument('--rule_id', help='The ID of the data replication rule for which you want to configure RTC.', required=True)

def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()
    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider
    # Specify the region.
    cfg.region = args.region
    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Query the data replication progress.
    result = client.get_bucket_replication_progress(oss.GetBucketReplicationProgressRequest(
            bucket=args.bucket,
            rule_id=args.rule_id,
    ))

    # Display the basic response information.
    print(f'status code: {result.status_code},'
          f' request id: {result.request_id},'
          f' replication progress: {result.replication_progress}')

    # If the data replication rule exists, display rule details.
    if result.replication_progress.rules:
        for r in result.replication_progress.rules:
            print(f'result: historical object replication: {r.historical_object_replication}, '
                  f'progress: {r.progress}, '
                  f'id: {r.id}, '
                  f'prefix set: {r.prefix_set}, '
                  f'action: {r.action}, '
                  f'destination: {r.destination}, '
                  f'status: {r.status}')

if __name__ == "__main__":
    main()

Disable data replication

You can delete the replication rule that is configured for a source bucket to disable data replication for the bucket.

The following sample code deletes the replication rule that has a specific ID from the specified bucket:

import argparse
import alibabacloud_oss_v2 as oss

# Create a command-line argument parser.
parser = argparse.ArgumentParser(description="delete bucket replication sample")

# Add the command-line arguments.
parser.add_argument('--region', help='The region in which the bucket is located.', required=True)
parser.add_argument('--bucket', help='The name of the bucket.', required=True)
parser.add_argument('--endpoint', help='The domain names that other services can use to access OSS')
parser.add_argument('--rule_id', help='The ID of the data replication rule for which you want to configure RTC.', required=True)

def main():
    # Parse the command-line arguments.
    args = parser.parse_args()

    # Obtain access credentials from environment variables.
    credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

    # Use the default configuration of the SDK.
    cfg = oss.config.load_default()

    # Specify the credential provider.
    cfg.credentials_provider = credentials_provider

    # Specify the region.
    cfg.region = args.region

    # If an endpoint is provided from the command line, update the endpoint in the configuration with the provided endpoint.
    if args.endpoint is not None:
        cfg.endpoint = args.endpoint

    # Create an OSS client.
    client = oss.Client(cfg)

    # Delete the replication rule.
    result = client.delete_bucket_replication(oss.DeleteBucketReplicationRequest(
            bucket=args.bucket,
            replication_rules=oss.ReplicationRules(
                ids=[args.rule_id],
            ),
    ))

    # Display the basic response information.
    print(f'status code: {result.status_code},'
          f' request id: {result.request_id},')

if __name__ == "__main__":
    main()