Lambda / Client / list_aliases

list_aliases

Lambda.Client.list_aliases(**kwargs)

Returns a list of aliases for a Lambda function.

See also: AWS API Documentation

Request Syntax

response = client.list_aliases(
    FunctionName='string',
    FunctionVersion='string',
    Marker='string',
    MaxItems=123
)

Parameters:

• FunctionName (string) –

  [REQUIRED]

  The name or ARN of the Lambda function.

  Name formats

  • Function name - MyFunction.

  • Function ARN - arn:aws:lambda:us-west-2:123456789012:function:MyFunction.

  • Partial ARN - 123456789012:function:MyFunction.

  The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.

• FunctionVersion (string) – Specify a function version to only list aliases that invoke that version.

• Marker (string) – Specify the pagination token that’s returned by a previous request to retrieve the next page of results.

• MaxItems (integer) – Limit the number of aliases returned.

Return type:

dict

Returns:

Response Syntax

{
    'NextMarker': 'string',
    'Aliases': [
        {
            'AliasArn': 'string',
            'Name': 'string',
            'FunctionVersion': 'string',
            'Description': 'string',
            'RoutingConfig': {
                'AdditionalVersionWeights': {
                    'string': 123.0
                }
            },
            'RevisionId': 'string'
        },
    ]
}

Response Structure

• (dict) –

  • NextMarker (string) –

    The pagination token that’s included if more results are available.

  • Aliases (list) –

    A list of aliases.

    • (dict) –

      Provides configuration information about a Lambda function alias.

      • AliasArn (string) –

        The Amazon Resource Name (ARN) of the alias.

      • Name (string) –

        The name of the alias.

      • FunctionVersion (string) –

        The function version that the alias invokes.

      • Description (string) –

        A description of the alias.

      • RoutingConfig (dict) –

        The routing configuration of the alias.

        • AdditionalVersionWeights (dict) –

          The second version, and the percentage of traffic that’s routed to it.

          • (string) –

            • (float) –

      • RevisionId (string) –

        A unique identifier that changes when you update the alias.

Exceptions

• Lambda.Client.exceptions.ServiceException

• Lambda.Client.exceptions.ResourceNotFoundException

• Lambda.Client.exceptions.InvalidParameterValueException

• Lambda.Client.exceptions.TooManyRequestsException

Examples

The following example returns a list of aliases for a function named my-function.

response = client.list_aliases(
    FunctionName='my-function',
)

print(response)

Expected Output:

{
    'Aliases': [
        {
            'AliasArn': 'arn:aws:lambda:us-west-2:123456789012:function:my-function:BETA',
            'Description': 'Production environment BLUE.',
            'FunctionVersion': '2',
            'Name': 'BLUE',
            'RevisionId': 'a410117f-xmpl-494e-8035-7e204bb7933b',
            'RoutingConfig': {
                'AdditionalVersionWeights': {
                    '1': 0.7,
                },
            },
        },
        {
            'AliasArn': 'arn:aws:lambda:us-west-2:123456789012:function:my-function:LIVE',
            'Description': 'Production environment GREEN.',
            'FunctionVersion': '1',
            'Name': 'GREEN',
            'RevisionId': '21d40116-xmpl-40ba-9360-3ea284da1bb5',
        },
    ],
    'ResponseMetadata': {
        '...': '...',
    },
}