Sample API Gateway Method

gistfile1.txt

{
    "WebChatApiUserIdCreateMethod": {
        "Type": "AWS::ApiGateway::Method",
        "Properties": {
            "AuthorizationType": "NONE",
            "ResourceId": {
                "Ref": "WebChatApiUserResource"
            },
            "RestApiId": {
                "Ref": "WebChatApi"
            },
            "HttpMethod": "POST",
            "Integration": {
                "IntegrationHttpMethod": "POST",
                "IntegrationResponses": [
                    {
                        "SelectionPattern": "",
                        "StatusCode": "200"
                    }, 
                    {
                        "ResponseTemplates": {
                            "application/json": "{\n    \"type\": \"InternalServerError\",\n    \"message\": \"The backend server encountered an internal error.\"\n}"
                        },
                        "SelectionPattern": "(\\n|.)+",
                        "StatusCode": "500"
                    }, 
                    {
                        "ResponseTemplates": {
                            "application/json": "{\n    \"type\": \"InternalServerTimeout\",\n    \"message\": \"The backend server did not respond quickly enough.\"\n}"
                        },
                        "SelectionPattern": ".*Task timed out after .*",
                        "StatusCode": "504"
                    }
                ],
                "PassthroughBehavior": "NEVER",
                "RequestTemplates": {
                    "application/json": {
                        "Fn::Sub": "{\n    \"api-id\": \"$context.apiId\",\n    \"host\": \"$input.params('Host')\",\n    \"stage\": \"$context.stage\",\n    \"request-body\": $input.json(\"$\"),\n    \"resource-path\": \"$context.resourcePath\"\n}"
                    }
                },
                "Type": "AWS",
                "Uri": {
                    "Fn::Sub": [
                        "arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${UserIdGeneratorFunctionArn}/invocations", {
                            "UserIdGeneratorFunctionArn": {
                                "Fn::GetAtt": [
                                    "UserIdGeneratorFunction",
                                    "Arn"
                                ]
                            }
                        }
                    ]
                }
            },
            "MethodResponses": [
                {
                    "StatusCode": "200"
                }, 
                {
                    "StatusCode": "500"
                }, 
                {
                    "StatusCode": "504"
                }
            ],
            "RequestParameters": {
                "method.request.header.Host": true
            }
        }
    }
}