tencent cloud

masukan

Modifying Object Metadata

Terakhir diperbarui:2022-05-11 12:10:08

    Overview

    This document provides SDK code samples for modifying object metadata.

    Modifying Object Metadata

    If the source and destination objects are the same and CopyStatus is set to Replaced, you can modify the object metadata via the header.

    Sample request

    # -*- coding=utf-8
    from qcloud_cos import CosConfig
    from qcloud_cos import CosS3Client
    import sys
    import logging
    # In most cases, set the log level to INFO. If you need to debug, you can set it to DEBUG and the SDK will print the communication information of the client.
    logging.basicConfig(level=logging.INFO, stream=sys.stdout)
    # 1. Set user attributes such as secret_id, secret_key, and region. Appid has been removed from CosConfig and thus needs to be specified in Bucket, which is formatted as BucketName-Appid.
    secret_id = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.intl.cloud.tencent.com/cam/capi
    secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.intl.cloud.tencent.com/cam/capi
    region = 'ap-beijing'      # Replace it with the actual region, which can be viewed in the console at https://console.intl.cloud.tencent.com/cos5/bucket
                              # For the list of regions supported by COS, see https://intl.cloud.tencent.com/document/product/436/6224
    token = None               # Token is required for temporary keys but not permanent keys. For more information about how to generate and use a temporary key, visit https://intl.cloud.tencent.com/document/product/436/14048
    scheme = 'https'           # Specify whether to use HTTP or HTTPS protocol to access COS. This field is optional and is `https` by default
    config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key, Token=token, Scheme=scheme)
    client = CosS3Client(config)
    response = client.copy_object(
       Bucket='examplebucket-1250000000',
       Key='exampleobject',
       CopySource={
           'Bucket': 'sourcebucket-1250000000', 
           'Key': 'exampleobject', 
           'Region': 'ap-guangzhou'
       },
       CopyStatus='Replaced', 
       ContentType='text/plain', # Modify object ContentType.
       Metadata={'x-cos-meta-key1': 'value1', 'x-cos-meta-key2': 'value2'} # Modify custom metadata.
    )
    

    Parameter description

    Parameter Description Type Required
    Bucket Bucket name in the format of BucketName-APPID String Yes
    Key Object key, which uniquely identifies an object in a bucket. For example, if an object's access endpoint is examplebucket-1250000000.cos.ap-guangzhou.myqcloud.com/doc/pic.jpg, its key is doc/pic.jpg. String Yes
    CopySource Path of the source object to copy, which contains Bucket, Key, Region, and VersionId Dict Yes
    CopyStatus Valid values: Copy: ignores the configured metadata and copies the file directly; Replaced: modifies the metadata according to the configured metadata. If the destination path is identical to the source path, this parameter must be set to Replaced. String Yes
    ACL ACL of the object, such as private or public-read String No
    GrantFullControl Grants full permission. Format: id="OwnerUin" String No
    GrantRead Grants read permission. Format: id="OwnerUin" String No
    Expires Expiration time String No
    CacheControl Cache policy String No
    ContentType Content type String No
    ContentDisposition Filename String No
    ContentEncoding Encoding type String No
    ContentLanguage Language type String No
    Metadata User-defined object metadata Dict No

    Modifying the Storage Class of Object

    If the source and destination objects are the same and CopyStatus is set to Replaced, you can use StorageClass to modify the storage class.

    Sample request

    # -*- coding=utf-8
    from qcloud_cos import CosConfig
    from qcloud_cos import CosS3Client
    import sys
    import logging
    # In most cases, set the log level to INFO. If you need to debug, you can set it to DEBUG and the SDK will print the communication information of the client.
    logging.basicConfig(level=logging.INFO, stream=sys.stdout)
    # 1. Set user attributes such as secret_id, secret_key, and region. Appid has been removed from CosConfig and thus needs to be specified in Bucket, which is formatted as BucketName-Appid.
    secret_id = 'SecretId'     # Replace it with the actual SecretId, which can be viewed and managed at https://console.intl.cloud.tencent.com/cam/capi
    secret_key = 'SecretKey'     # Replace it with the actual SecretKey, which can be viewed and managed at https://console.intl.cloud.tencent.com/cam/capi
    region = 'ap-beijing'      # Replace it with the actual region, which can be viewed in the console at https://console.intl.cloud.tencent.com/cos5/bucket
                             # For the list of regions supported by COS, see https://intl.cloud.tencent.com/document/product/436/6224
    token = None               # Token is required for temporary keys but not permanent keys. For more information about how to generate and use a temporary key, visit https://intl.cloud.tencent.com/document/product/436/14048
    scheme = 'https'           # Specify whether to use HTTP or HTTPS protocol to access COS. This field is optional and is `https` by default
    config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key, Token=token, Scheme=scheme)
    client = CosS3Client(config)
    response = client.copy_object(
      Bucket='examplebucket-1250000000',
      Key='exampleobject',
      CopySource={
          'Bucket': 'examplebucket-1250000000', 
          'Key': 'exampleobject', 
          'Region': 'ap-guangzhou'
      },
      CopyStatus='Replaced', 
      StorageClass='STANDARD_IA' # Modify the storage class to STANDARD_IA.
    )
    

    Sample request with all parameters

    response = client.copy_object(
      Bucket='examplebucket-1250000000',
      Key='exampleobject',
      CopySource={
          'Bucket': 'sourcebucket-1250000000', 
          'Key': 'exampleobject', 
          'Region': 'ap-guangzhou',
          'VersionId': 'string'
      },
      CopyStatus='Copy'|'Replaced',
      ACL='private'|'public-read',
      GrantFullControl='string',
      GrantRead='string',
      StorageClass='STANDARD'|'STANDARD_IA',
      Expires='string',
      CacheControl='string',
      ContentType='string',
      ContentDisposition='string',
      ContentEncoding='string',
      ContentLanguage='string',
      Metadata={
          'x-cos-meta-key1': 'value1',
          'x-cos-meta-key2': 'value2'
      }
    )
    

    Parameter description

    Parameter Description Type Required
    Bucket Bucket name in the format of BucketName-APPID String Yes
    Key Object key, which uniquely identifies an object in a bucket. For example, if an object's access endpoint is examplebucket-1250000000.cos.ap-guangzhou.myqcloud.com/doc/pic.jpg, its key is doc/pic.jpg. String Yes
    CopySource Path of the source object to copy, which contains Bucket, Key, Region, and VersionId Dict Yes
    CopyStatus Valid values: Copy: ignores the configured metadata and copies the file directly; Replaced: modifies the metadata according to the configured metadata. If the destination path is identical to the source path, this parameter must be set to Replaced. String Yes
    StorageClass Storage class of the object. Valid values: STANDARD (default); STANDARD_IA. String No
    Hubungi Kami

    Hubungi tim penjualan atau penasihat bisnis kami untuk membantu bisnis Anda.

    Dukungan Teknis

    Buka tiket jika Anda mencari bantuan lebih lanjut. Tiket kami tersedia 7x24.

    Dukungan Telepon 7x24