AppSync / Client / list_channel_namespaces

list_channel_namespaces

AppSync.Client.list_channel_namespaces(**kwargs)

Lists the channel namespaces for a specified Api.

ListChannelNamespaces returns only high level details for the channel namespace. To retrieve code handlers, use GetChannelNamespace.

See also: AWS API Documentation

Request Syntax

response = client.list_channel_namespaces(
    apiId='string',
    nextToken='string',
    maxResults=123
)

Parameters:

• apiId (string) –

  [REQUIRED]

  The Api ID.

• nextToken (string) – An identifier that was returned from the previous call to this operation, which you can use to return the next set of items in the list.

• maxResults (integer) – The maximum number of results that you want the request to return.

Return type:

dict

Returns:

Response Syntax

{
    'channelNamespaces': [
        {
            'apiId': 'string',
            'name': 'string',
            'subscribeAuthModes': [
                {
                    'authType': 'API_KEY'|'AWS_IAM'|'AMAZON_COGNITO_USER_POOLS'|'OPENID_CONNECT'|'AWS_LAMBDA'
                },
            ],
            'publishAuthModes': [
                {
                    'authType': 'API_KEY'|'AWS_IAM'|'AMAZON_COGNITO_USER_POOLS'|'OPENID_CONNECT'|'AWS_LAMBDA'
                },
            ],
            'codeHandlers': 'string',
            'tags': {
                'string': 'string'
            },
            'channelNamespaceArn': 'string',
            'created': datetime(2015, 1, 1),
            'lastModified': datetime(2015, 1, 1),
            'handlerConfigs': {
                'onPublish': {
                    'behavior': 'CODE'|'DIRECT',
                    'integration': {
                        'dataSourceName': 'string',
                        'lambdaConfig': {
                            'invokeType': 'REQUEST_RESPONSE'|'EVENT'
                        }
                    }
                },
                'onSubscribe': {
                    'behavior': 'CODE'|'DIRECT',
                    'integration': {
                        'dataSourceName': 'string',
                        'lambdaConfig': {
                            'invokeType': 'REQUEST_RESPONSE'|'EVENT'
                        }
                    }
                }
            }
        },
    ],
    'nextToken': 'string'
}

Response Structure

• (dict) –

  • channelNamespaces (list) –

    The ChannelNamespace objects.

    • (dict) –

      Describes a channel namespace associated with an Api. The ChannelNamespace contains the definitions for code handlers for the Api.

      • apiId (string) –

        The Api ID.

      • name (string) –

        The name of the channel namespace. This name must be unique within the Api.

      • subscribeAuthModes (list) –

        The authorization mode to use for subscribing to messages on the channel namespace. This configuration overrides the default ``Api``authorization configuration.

        • (dict) –

          Describes an authorization configuration. Use AuthMode to specify the publishing and subscription authorization configuration for an Event API.

          • authType (string) –

            The authorization type.

      • publishAuthModes (list) –

        The authorization mode to use for publishing messages on the channel namespace. This configuration overrides the default ``Api``authorization configuration.

        • (dict) –

          Describes an authorization configuration. Use AuthMode to specify the publishing and subscription authorization configuration for an Event API.

          • authType (string) –

            The authorization type.

      • codeHandlers (string) –

        The event handler functions that run custom business logic to process published events and subscribe requests.

      • tags (dict) –

        A map with keys of TagKey objects and values of TagValue objects.

        • (string) –

          The key for the tag.

          • (string) –

            The value for the tag.

      • channelNamespaceArn (string) –

        The Amazon Resource Name (ARN) for the ChannelNamespace.

      • created (datetime) –

        The date and time that the ChannelNamespace was created.

      • lastModified (datetime) –

        The date and time that the ChannelNamespace was last changed.

      • handlerConfigs (dict) –

        The configuration for the OnPublish and OnSubscribe handlers.

        • onPublish (dict) –

          The configuration for the OnPublish handler.

          • behavior (string) –

            The behavior for the handler.

          • integration (dict) –

            The integration data source configuration for the handler.

            • dataSourceName (string) –

              The unique name of the data source that has been configured on the API.

            • lambdaConfig (dict) –

              The configuration for a Lambda data source.

              • invokeType (string) –

                The invocation type for a Lambda data source.

        • onSubscribe (dict) –

          The configuration for the OnSubscribe handler.

          • behavior (string) –

            The behavior for the handler.

          • integration (dict) –

            The integration data source configuration for the handler.

            • dataSourceName (string) –

              The unique name of the data source that has been configured on the API.

            • lambdaConfig (dict) –

              The configuration for a Lambda data source.

              • invokeType (string) –

                The invocation type for a Lambda data source.

  • nextToken (string) –

    An identifier that was returned from the previous call to this operation, which you can use to return the next set of items in the list.

Exceptions

• AppSync.Client.exceptions.BadRequestException

• AppSync.Client.exceptions.NotFoundException

• AppSync.Client.exceptions.UnauthorizedException

• AppSync.Client.exceptions.InternalFailureException