Lambda / Client / get_alias

get_alias

Lambda.Client.get_alias(**kwargs)

Returns details about a Lambda function alias.

See also: AWS API Documentation

Request Syntax

response = client.get_alias(
    FunctionName='string',
    Name='string'
)

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.

• Name (string) –

  [REQUIRED]

  The name of the alias.

Return type:

dict

Returns:

Response Syntax

{
    'AliasArn': 'string',
    'Name': 'string',
    'FunctionVersion': 'string',
    'Description': 'string',
    'RoutingConfig': {
        'AdditionalVersionWeights': {
            'string': 123.0
        }
    },
    'RevisionId': 'string'
}

Response Structure

• (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 details about an alias named BLUE for a function named my-function

response = client.get_alias(
    FunctionName='my-function',
    Name='BLUE',
)

print(response)

Expected Output:

{
    'AliasArn': 'arn:aws:lambda:us-west-2:123456789012:function:my-function:BLUE',
    'Description': 'Production environment BLUE.',
    'FunctionVersion': '3',
    'Name': 'BLUE',
    'RevisionId': '594f41fb-xmpl-4c20-95c7-6ca5f2a92c93',
    'ResponseMetadata': {
        '...': '...',
    },
}