AWS CLI Command Reference

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[ aws . appsync ]

list-channel-namespaces

Description

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

list-channel-namespaces is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: channelNamespaces

Synopsis

  list-channel-namespaces
--api-id <value>
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]

Options

--api-id (string)

The Api ID.

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command's output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command's output. If the total number of items available is more than the value specified, a NextToken is provided in the command's output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

Global Options

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command's default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

  • json
  • text
  • table

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

  • on
  • off
  • auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

Output

channelNamespaces -> (list)

The ChannelNamespace objects.

(structure)

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.

(structure)

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.

(structure)

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 -> (map)

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

key -> (string)

The key for the tag.

value -> (string)

The value for the tag.

channelNamespaceArn -> (string)

The Amazon Resource Name (ARN) for the ChannelNamespace .

created -> (timestamp)

The date and time that the ChannelNamespace was created.

lastModified -> (timestamp)

The date and time that the ChannelNamespace was last changed.

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.