AWS Lambda Response throwing error in dialogflow when using v2

I am returning what looks like the correct response from the AWS lambda to dialogflow but its throwing an error in dialogflow. The FULFILLMENT RESPONSE tab shows the following

  "statusCode": 200,
  "body": {
    "payload": {
      "google": {
        "expectUserResponse": true,
        "richResponse": {
          "items": [
            {
              "simpleResponse": {
                "textToSpeech": "AWS LAMBDA says hi"
              }
            }
          ]
        },
        "userStorage": "{\"data\":{}}"
      }
    },
    "outputContexts": [
      {
        "name": "projects/<someid>/agent/sessions/<someId>/contexts/_actions_on_google",
        "lifespanCount": 99,
        "parameters": {
          "data": "{}"
        }
      }
    ]
  }
}

but it shows an error in the FULFILLMENT STATUS tab

Webhook call failed. Error: Failed to parse webhook JSON response: Cannot find field: statusCode in message google.cloud.dialogflow.v2.WebhookResponse.

[hoklai1997]

I got it working:

const {
    dialogflow,
    BasicCard,
    BrowseCarousel,
    BrowseCarouselItem,
    Button,
    Carousel,
    Image,
    LinkOutSuggestion,
    List,
    MediaObject,
    Suggestions,
    SimpleResponse,
    Table,
} = require('actions-on-google');
 
const app = dialogflow() 
 
app.intent('test', (conv, params) => {
    conv.ask(new SimpleResponse({
        speech: "WORKING!!!",
        text: "GOT IT WORKING YOU HANDSOME BASTARD"
    }))
});
 
app.fallback((conv) => {
    conv.ask(new SimpleResponse({
        speech: "I'm sorry, I didn't catch that",
        text: "I'm sorry, I didn't catch that"
    }));
}); 
 
exports.handler = function(event, context, callback) {
    app.handler(event, {}).then((res) => {
        if (res.status != 200) {
            callback(null, {"fulfillmentText": `I got status code: ${res.status}`});
        } else {
            callback(null, res.body);
        }
    }).catch((e) => {
    callback(null, {"fulfillmentText": `There was an error\n${e}`});
    });
}; 

The fulfillmentText callbacks are my error logs here

Just so you know, since I’m using SimpleResponse, the dialogflow test window doesn’t display anything when it runs succesfully. You can either go into the Diagnostic Info to take a look, or open up the simulator and it should be working. Good Luck!

[rahul71]

@hoklai1997 if you use my code above it almost works…as in runs the code but does not return correctly. I did have to add the following body mapping template in the Integration Request of the API gateway. The response seems to be sent back except dialogflow does not recognize it and throws the statusCode error. Just doing something wrong and as much as I like hacking this thing the documentation for lambda is not very good (yet).

Request Body Passthrough: When there are no templates defined (recommended) Content-Type: application/json and when you click on the application/json I have the following template

##  This template will pass through all parameters including path, querystring, header, stage variables, and context through to the integration endpoint via the body/payload
#set($allParams = $input.params())
{
"body" : $input.json('$'),
 "headers": {
        #foreach($param in $input.params().header.keySet())
        "$param": "$util.escapeJavaScript($input.params().header.get($param))"
        #if($foreach.hasNext),#end
        #end
    },
"params" : {
#foreach($type in $allParams.keySet())
    #set($params = $allParams.get($type))
"$type" : {
    #foreach($paramName in $params.keySet())
    "$paramName" : "$util.escapeJavaScript($params.get($paramName))"
        #if($foreach.hasNext),#end
    #end
}
    #if($foreach.hasNext),#end
#end
},
"stage-variables" : {
#foreach($key in $stageVariables.keySet())
"$key" : "$util.escapeJavaScript($stageVariables.get($key))"
    #if($foreach.hasNext),#end
#end
},
"context" : {
    "account-id" : "$context.identity.accountId",
    "api-id" : "$context.apiId",
    "api-key" : "$context.identity.apiKey",
    "authorizer-principal-id" : "$context.authorizer.principalId",
    "caller" : "$context.identity.caller",
    "cognito-authentication-provider" : "$context.identity.cognitoAuthenticationProvider",
    "cognito-authentication-type" : "$context.identity.cognitoAuthenticationType",
    "cognito-identity-id" : "$context.identity.cognitoIdentityId",
    "cognito-identity-pool-id" : "$context.identity.cognitoIdentityPoolId",
    "http-method" : "$context.httpMethod",
    "stage" : "$context.stage",
    "source-ip" : "$context.identity.sourceIp",
    "user" : "$context.identity.user",
    "user-agent" : "$context.identity.userAgent",
    "user-arn" : "$context.identity.userArn",
    "request-id" : "$context.requestId",
    "resource-id" : "$context.resourceId",
    "resource-path" : "$context.resourcePath"
    }
}