ListChannelNamespaces
Lists the channel namespaces for a specified Api.
      ListChannelNamespaces returns only high level details for the channel
         namespace. To retrieve code handlers, use GetChannelNamespace.
Request Syntax
GET /v2/apis/apiId/channelNamespaces?maxResults=maxResults&nextToken=nextToken HTTP/1.1
URI Request Parameters
The request uses the following URI parameters.
- apiId
- 
               The ApiID.Required: Yes 
- maxResults
- 
               The maximum number of results that you want the request to return. Valid Range: Minimum value of 0. Maximum value of 25. 
- nextToken
- 
               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. Length Constraints: Minimum length of 1. Maximum length of 65536. Pattern: [\S]+
Request Body
The request does not have a request body.
Response Syntax
HTTP/1.1 200
Content-type: application/json
{
   "channelNamespaces": [ 
      { 
         "apiId": "string",
         "channelNamespaceArn": "string",
         "codeHandlers": "string",
         "created": number,
         "handlerConfigs": { 
            "onPublish": { 
               "behavior": "string",
               "integration": { 
                  "dataSourceName": "string",
                  "lambdaConfig": { 
                     "invokeType": "string"
                  }
               }
            },
            "onSubscribe": { 
               "behavior": "string",
               "integration": { 
                  "dataSourceName": "string",
                  "lambdaConfig": { 
                     "invokeType": "string"
                  }
               }
            }
         },
         "lastModified": number,
         "name": "string",
         "publishAuthModes": [ 
            { 
               "authType": "string"
            }
         ],
         "subscribeAuthModes": [ 
            { 
               "authType": "string"
            }
         ],
         "tags": { 
            "string" : "string" 
         }
      }
   ],
   "nextToken": "string"
}Response Elements
If the action is successful, the service sends back an HTTP 200 response.
The following data is returned in JSON format by the service.
- channelNamespaces
- 
               The ChannelNamespaceobjects.Type: Array of ChannelNamespace objects 
- nextToken
- 
               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. Type: String Length Constraints: Minimum length of 1. Maximum length of 65536. Pattern: [\S]+
Errors
For information about the errors that are common to all actions, see Common Errors.
- BadRequestException
- 
               The request is not well formed. For example, a value is invalid or a required field is missing. Check the field values, and then try again. - detail
- 
                        Provides further details for the reason behind the bad request. For reason type CODE_ERROR, the detail will contain a list of code errors.
- reason
- 
                        Provides context for the cause of the bad request. The only supported value is CODE_ERROR.
 HTTP Status Code: 400 
- InternalFailureException
- 
               An internal AWS AppSync error occurred. Try your request again. HTTP Status Code: 500 
- NotFoundException
- 
               The resource specified in the request was not found. Check the resource, and then try again. HTTP Status Code: 404 
- UnauthorizedException
- 
               You aren't authorized to perform this operation. HTTP Status Code: 401 
See Also
For more information about using this API in one of the language-specific AWS SDKs, see the following: