MultipartUploadPart / Action / copy_from

copy_from#

S3.MultipartUploadPart.copy_from(**kwargs)#

Uploads a part by copying data from an existing object as data source. To specify the data source, you add the request header x-amz-copy-source in your request. To specify a byte range, you add the request header x-amz-copy-source-range in your request.

For information about maximum and minimum part sizes and other multipart upload specifications, see Multipart upload limits in the Amazon S3 User Guide.

Note

Instead of copying data from an existing object as part data, you might use the UploadPart action to upload new data as a part of an object in your request.

You must initiate a multipart upload before you can upload any part. In response to your initiate request, Amazon S3 returns the upload ID, a unique identifier that you must include in your upload part request.

For conceptual information about multipart uploads, see Uploading Objects Using Multipart Upload in the Amazon S3 User Guide. For information about copying objects using a single atomic action vs. a multipart upload, see Operations on Objects in the Amazon S3 User Guide.

Note

Directory buckets - For directory buckets, you must make requests for this API operation to the Zonal endpoint. These endpoints support virtual-hosted-style requests in the format ``https://bucket_name.s3express-az_id.region.amazonaws.com/key-name ``. Path-style requests are not supported. For more information, see Regional and Zonal endpoints in the Amazon S3 User Guide.

Authentication and authorization

All UploadPartCopy requests must be authenticated and signed by using IAM credentials (access key ID and secret access key for the IAM identities). All headers with the x-amz- prefix, including x-amz-copy-source, must be signed. For more information, see REST Authentication.

Directory buckets - You must use IAM credentials to authenticate and authorize your access to the UploadPartCopy API operation, instead of using the temporary security credentials through the CreateSession API operation.

Amazon Web Services CLI or SDKs handles authentication and authorization on your behalf.

Permissions

You must have READ access to the source object and WRITE access to the destination bucket.

  • General purpose bucket permissions - You must have the permissions in a policy based on the bucket types of your source bucket and destination bucket in an UploadPartCopy operation.

    • If the source object is in a general purpose bucket, you must have the s3:GetObject permission to read the source object that is being copied.

    • If the destination bucket is a general purpose bucket, you must have the s3:PutObject permission to write the object copy to the destination bucket.

    • To perform a multipart upload with encryption using an Key Management Service key, the requester must have permission to the kms:Decrypt and kms:GenerateDataKey actions on the key. The requester must also have permissions for the kms:GenerateDataKey action for the CreateMultipartUpload API. Then, the requester needs permissions for the kms:Decrypt action on the UploadPart and UploadPartCopy APIs. These permissions are required because Amazon S3 must decrypt and read data from the encrypted file parts before it completes the multipart upload. For more information about KMS permissions, see Protecting data using server-side encryption with KMS in the Amazon S3 User Guide. For information about the permissions required to use the multipart upload API, see Multipart upload and permissions and Multipart upload API and permissions in the Amazon S3 User Guide.

  • Directory bucket permissions - You must have permissions in a bucket policy or an IAM identity-based policy based on the source and destination bucket types in an UploadPartCopy operation.

    • If the source object that you want to copy is in a directory bucket, you must have the s3express:CreateSession permission in the Action element of a policy to read the object. By default, the session is in the ReadWrite mode. If you want to restrict the access, you can explicitly set the s3express:SessionMode condition key to ReadOnly on the copy source bucket.

    • If the copy destination is a directory bucket, you must have the s3express:CreateSession permission in the Action element of a policy to write the object to the destination. The s3express:SessionMode condition key cannot be set to ReadOnly on the copy destination.

If the object is encrypted with SSE-KMS, you must also have the kms:GenerateDataKey and kms:Decrypt permissions in IAM identity-based policies and KMS key policies for the KMS key.

For example policies, see Example bucket policies for S3 Express One Zone and Amazon Web Services Identity and Access Management (IAM) identity-based policies for S3 Express One Zone in the Amazon S3 User Guide.

Encryption

  • General purpose buckets - For information about using server-side encryption with customer-provided encryption keys with the UploadPartCopy operation, see CopyObject and UploadPart.

  • Directory buckets - For directory buckets, there are only two supported options for server-side encryption: server-side encryption with Amazon S3 managed keys (SSE-S3) ( AES256) and server-side encryption with KMS keys (SSE-KMS) ( aws:kms). For more information, see Protecting data with server-side encryption in the Amazon S3 User Guide.

Note

For directory buckets, when you perform a CreateMultipartUpload operation and an UploadPartCopy operation, the request headers you provide in the CreateMultipartUpload request must match the default encryption configuration of the destination bucket.

S3 Bucket Keys aren’t supported, when you copy SSE-KMS encrypted objects from general purpose buckets to directory buckets, from directory buckets to general purpose buckets, or between directory buckets, through UploadPartCopy. In this case, Amazon S3 makes a call to KMS every time a copy request is made for a KMS-encrypted object.

Special errors

  • Error Code: NoSuchUpload

    • Description: The specified multipart upload does not exist. The upload ID might be invalid, or the multipart upload might have been aborted or completed.

    • HTTP Status Code: 404 Not Found

  • Error Code: InvalidRequest

    • Description: The specified copy source is not supported as a byte-range copy source.

    • HTTP Status Code: 400 Bad Request

    HTTP Host header syntax

Directory buckets - The HTTP Host header syntax is Bucket_name.s3express-az_id.region.amazonaws.com.

The following operations are related to UploadPartCopy:

See also: AWS API Documentation

Request Syntax

response = multipart_upload_part.copy_from(
    CopySource='string' or {'Bucket': 'string', 'Key': 'string', 'VersionId': 'string'},
    CopySourceIfMatch='string',
    CopySourceIfModifiedSince=datetime(2015, 1, 1),
    CopySourceIfNoneMatch='string',
    CopySourceIfUnmodifiedSince=datetime(2015, 1, 1),
    CopySourceRange='string',
    SSECustomerAlgorithm='string',
    SSECustomerKey='string',
    CopySourceSSECustomerAlgorithm='string',
    CopySourceSSECustomerKey='string',
    RequestPayer='requester',
    ExpectedBucketOwner='string',
    ExpectedSourceBucketOwner='string'
)
Parameters:

  • CopySource (str or dict) – [REQUIRED] The name of the source bucket, key name of the source object, and optional version ID of the source object. You can either provide this value as a string or a dictionary. The string form is {bucket}/{key} or {bucket}/{key}?versionId={versionId} if you want to copy a specific version. You can also provide this value as a dictionary. The dictionary format is recommended over the string format because it is more explicit. The dictionary format is: {‘Bucket’: ‘bucket’, ‘Key’: ‘key’, ‘VersionId’: ‘id’}. Note that the VersionId key is optional and may be omitted. To specify an S3 access point, provide the access point ARN for the Bucket key in the copy source dictionary. If you want to provide the copy source for an S3 access point as a string instead of a dictionary, the ARN provided must be the full S3 access point object ARN (i.e. {accesspoint_arn}/object/{key})

  • CopySourceIfMatch (string) –

    Copies the object if its entity tag (ETag) matches the specified tag.

    If both of the x-amz-copy-source-if-match and x-amz-copy-source-if-unmodified-since headers are present in the request as follows:

    x-amz-copy-source-if-match condition evaluates to true, and;

    x-amz-copy-source-if-unmodified-since condition evaluates to false;

    Amazon S3 returns 200 OK and copies the data.

  • CopySourceIfModifiedSince (datetime) –

    Copies the object if it has been modified since the specified time.

    If both of the x-amz-copy-source-if-none-match and x-amz-copy-source-if-modified-since headers are present in the request as follows:

    x-amz-copy-source-if-none-match condition evaluates to false, and;

    x-amz-copy-source-if-modified-since condition evaluates to true;

    Amazon S3 returns 412 Precondition Failed response code.

  • CopySourceIfNoneMatch (string) –

    Copies the object if its entity tag (ETag) is different than the specified ETag.

    If both of the x-amz-copy-source-if-none-match and x-amz-copy-source-if-modified-since headers are present in the request as follows:

    x-amz-copy-source-if-none-match condition evaluates to false, and;

    x-amz-copy-source-if-modified-since condition evaluates to true;

    Amazon S3 returns 412 Precondition Failed response code.

  • CopySourceIfUnmodifiedSince (datetime) –

    Copies the object if it hasn’t been modified since the specified time.

    If both of the x-amz-copy-source-if-match and x-amz-copy-source-if-unmodified-since headers are present in the request as follows:

    x-amz-copy-source-if-match condition evaluates to true, and;

    x-amz-copy-source-if-unmodified-since condition evaluates to false;

    Amazon S3 returns 200 OK and copies the data.

  • CopySourceRange (string) – The range of bytes to copy from the source object. The range value must use the form bytes=first-last, where the first and last are the zero-based byte offsets to copy. For example, bytes=0-9 indicates that you want to copy the first 10 bytes of the source. You can copy a range only if the source object is greater than 5 MB.

  • SSECustomerAlgorithm (string) –

    Specifies the algorithm to use when encrypting the object (for example, AES256).

    Note

    This functionality is not supported when the destination bucket is a directory bucket.

  • SSECustomerKey (string) –

    Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side-encryption-customer-algorithm header. This must be the same encryption key specified in the initiate multipart upload request.

    Note

    This functionality is not supported when the destination bucket is a directory bucket.

  • SSECustomerKeyMD5 (string) –

    Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.

    Note

    This functionality is not supported when the destination bucket is a directory bucket.

    Please note that this parameter is automatically populated if it is not provided. Including this parameter is not required

  • CopySourceSSECustomerAlgorithm (string) –

    Specifies the algorithm to use when decrypting the source object (for example, AES256).

    Note

    This functionality is not supported when the source object is in a directory bucket.

  • CopySourceSSECustomerKey (string) –

    Specifies the customer-provided encryption key for Amazon S3 to use to decrypt the source object. The encryption key provided in this header must be one that was used when the source object was created.

    Note

    This functionality is not supported when the source object is in a directory bucket.

  • CopySourceSSECustomerKeyMD5 (string) –

    Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.

    Note

    This functionality is not supported when the source object is in a directory bucket.

    Please note that this parameter is automatically populated if it is not provided. Including this parameter is not required

  • RequestPayer (string) –

    Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. If either the source or destination S3 bucket has Requester Pays enabled, the requester will pay for corresponding charges to copy the object. For information about downloading objects from Requester Pays buckets, see Downloading Objects in Requester Pays Buckets in the Amazon S3 User Guide.

    Note

    This functionality is not supported for directory buckets.

  • ExpectedBucketOwner (string) – The account ID of the expected destination bucket owner. If the account ID that you provide does not match the actual owner of the destination bucket, the request fails with the HTTP status code 403 Forbidden (access denied).

  • ExpectedSourceBucketOwner (string) – The account ID of the expected source bucket owner. If the account ID that you provide does not match the actual owner of the source bucket, the request fails with the HTTP status code 403 Forbidden (access denied).

Return type:

dict

Returns:

Response Syntax

{
    'CopySourceVersionId': 'string',
    'CopyPartResult': {
        'ETag': 'string',
        'LastModified': datetime(2015, 1, 1),
        'ChecksumCRC32': 'string',
        'ChecksumCRC32C': 'string',
        'ChecksumSHA1': 'string',
        'ChecksumSHA256': 'string'
    },
    'ServerSideEncryption': 'AES256'|'aws:kms'|'aws:kms:dsse',
    'SSECustomerAlgorithm': 'string',
    'SSECustomerKeyMD5': 'string',
    'SSEKMSKeyId': 'string',
    'BucketKeyEnabled': True|False,
    'RequestCharged': 'requester'
}

Response Structure

  • (dict) –

    • CopySourceVersionId (string) –

      The version of the source object that was copied, if you have enabled versioning on the source bucket.

      Note

      This functionality is not supported when the source object is in a directory bucket.

    • CopyPartResult (dict) –

      Container for all response elements.

      • ETag (string) –

        Entity tag of the object.

      • LastModified (datetime) –

        Date and time at which the object was uploaded.

      • ChecksumCRC32 (string) –

        The base64-encoded, 32-bit CRC-32 checksum of the object. This will only be present if it was uploaded with the object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a direct checksum value of the full object. Instead, it’s a calculation based on the checksum values of each individual part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

      • ChecksumCRC32C (string) –

        The base64-encoded, 32-bit CRC-32C checksum of the object. This will only be present if it was uploaded with the object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a direct checksum value of the full object. Instead, it’s a calculation based on the checksum values of each individual part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

      • ChecksumSHA1 (string) –

        The base64-encoded, 160-bit SHA-1 digest of the object. This will only be present if it was uploaded with the object. When you use the API operation on an object that was uploaded using multipart uploads, this value may not be a direct checksum value of the full object. Instead, it’s a calculation based on the checksum values of each individual part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

      • ChecksumSHA256 (string) –

        The base64-encoded, 256-bit SHA-256 digest of the object. This will only be present if it was uploaded with the object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a direct checksum value of the full object. Instead, it’s a calculation based on the checksum values of each individual part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity in the Amazon S3 User Guide.

    • ServerSideEncryption (string) –

      The server-side encryption algorithm used when you store this object in Amazon S3 (for example, AES256, aws:kms).

    • SSECustomerAlgorithm (string) –

      If server-side encryption with a customer-provided encryption key was requested, the response will include this header to confirm the encryption algorithm that’s used.

      Note

      This functionality is not supported for directory buckets.

    • SSECustomerKeyMD5 (string) –

      If server-side encryption with a customer-provided encryption key was requested, the response will include this header to provide the round-trip message integrity verification of the customer-provided encryption key.

      Note

      This functionality is not supported for directory buckets.

    • SSEKMSKeyId (string) –

      If present, indicates the ID of the KMS key that was used for object encryption.

    • BucketKeyEnabled (boolean) –

      Indicates whether the multipart upload uses an S3 Bucket Key for server-side encryption with Key Management Service (KMS) keys (SSE-KMS).

    • RequestCharged (string) –

      If present, indicates that the requester was successfully charged for the request.

      Note

      This functionality is not supported for directory buckets.