AWS Lambda 以 CloudWatch Logs 为目标

Question

我尝试关注 Using DynamoDB with Custom Alexa Skills - Dabble Lab #226 - YouTube 视频，遇到了一些问题，大部分我都能解决。我想我只是 AWS 和 Lambda 的新手。但我想知道是否有人能够向我解释为什么我没有将 CloudWatch Logs 作为目标，如视频中所示，以及我如何解决这个问题。当我尝试保存电影标题时 alexa sais 'we cannot save your movie right now. Try again!'。如果这里有人可以帮助我，那就太好了:)

我的 lambda 代码：

/* eslint-disable  func-names */
/* eslint-disable  no-console */

const Alexa = require('ask-sdk');
const dbHelper = require('./helpers/dbHelper');
const GENERAL_REPROMPT = "What would you like to do?";
const dynamoDBTableName = "dynamodb-starter";
const LaunchRequestHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'LaunchRequest';
  },
  handle(handlerInput) {
    const speechText = 'Hello there. What is your favourite movie? You can say add moviename to add your favourite movie or say list my movies to get your favourite movies.';
    const repromptText = 'What would you like to do? You can say HELP to get available options';

    return handlerInput.responseBuilder
      .speak(speechText)
      .reprompt(repromptText)
      .getResponse();
  },
};

const InProgressAddMovieIntentHandler = {
  canHandle(handlerInput) {
    const request = handlerInput.requestEnvelope.request;
    return request.type === 'IntentRequest' &&
      request.intent.name === 'AddMovieIntent' &&
      request.dialogState !== 'COMPLETED';
  },
  handle(handlerInput) {
    const currentIntent = handlerInput.requestEnvelope.request.intent;
    return handlerInput.responseBuilder
      .addDelegateDirective(currentIntent)
      .getResponse();
  }
}

const AddMovieIntentHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && handlerInput.requestEnvelope.request.intent.name === 'AddMovieIntent';
  },
  async handle(handlerInput) {
    const {responseBuilder } = handlerInput;
    const userID = handlerInput.requestEnvelope.context.System.user.userId; 
    const slots = handlerInput.requestEnvelope.request.intent.slots;
    const movieName = slots.MovieName.value;
    return dbHelper.addMovie(movieName, userID)
      .then((data) => {
        const speechText = `You have added movie ${movieName}. You can say add to add another one or remove to remove movie`;
        return responseBuilder
          .speak(speechText)
          .reprompt(GENERAL_REPROMPT)
          .getResponse();
      })
      .catch((err) => {
        console.log("Error occured while saving movie", err);
        const speechText = "we cannot save your movie right now. Try again!"
        return responseBuilder
          .speak(speechText)
          .getResponse();
      })
  },
};

const GetMoviesIntentHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && handlerInput.requestEnvelope.request.intent.name === 'GetMoviesIntent';
  },
  async handle(handlerInput) {
    const {responseBuilder } = handlerInput;
    const userID = handlerInput.requestEnvelope.context.System.user.userId; 
    return dbHelper.getMovies(userID)
      .then((data) => {
        var speechText = "Your movies are "
        if (data.length == 0) {
          speechText = "You do not have any favourite movie yet, add movie by saving add moviename "
        } else {
          speechText += data.map(e => e.movieTitle).join(", ")
        }
        return responseBuilder
          .speak(speechText)
          .reprompt(GENERAL_REPROMPT)
          .getResponse();
      })
      .catch((err) => {
        const speechText = "we cannot get your movie right now. Try again!"
        return responseBuilder
          .speak(speechText)
          .getResponse();
      })
  }
}

const InProgressRemoveMovieIntentHandler = {
  canHandle(handlerInput) {
    const request = handlerInput.requestEnvelope.request;
    return request.type === 'IntentRequest' &&
      request.intent.name === 'RemoveMovieIntent' &&
      request.dialogState !== 'COMPLETED';
  },
  handle(handlerInput) {
    const currentIntent = handlerInput.requestEnvelope.request.intent;
    return handlerInput.responseBuilder
      .addDelegateDirective(currentIntent)
      .getResponse();
  }
}

const RemoveMovieIntentHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && handlerInput.requestEnvelope.request.intent.name === 'RemoveMovieIntent';
  }, 
  handle(handlerInput) {
    const {responseBuilder } = handlerInput;
    const userID = handlerInput.requestEnvelope.context.System.user.userId; 
    const slots = handlerInput.requestEnvelope.request.intent.slots;
    const movieName = slots.MovieName.value;
    return dbHelper.removeMovie(movieName, userID)
      .then((data) => {
        const speechText = `You have removed movie with name ${movieName}, you can add another one by saying add`
        return responseBuilder
          .speak(speechText)
          .reprompt(GENERAL_REPROMPT)
          .getResponse();
      })
      .catch((err) => {
        const speechText = `You do not have movie with name ${movieName}, you can add it by saying add`
        return responseBuilder
          .speak(speechText)
          .reprompt(GENERAL_REPROMPT)
          .getResponse();
      })
  }
}

const HelpIntentHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && handlerInput.requestEnvelope.request.intent.name === 'AMAZON.HelpIntent';
  },
  handle(handlerInput) {
    const speechText = 'You can introduce yourself by telling me your name';

    return handlerInput.responseBuilder
      .speak(speechText)
      .reprompt(speechText)
      .getResponse();
  },
};

const CancelAndStopIntentHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && (handlerInput.requestEnvelope.request.intent.name === 'AMAZON.CancelIntent'
        || handlerInput.requestEnvelope.request.intent.name === 'AMAZON.StopIntent');
  },
  handle(handlerInput) {
    const speechText = 'Goodbye!';

    return handlerInput.responseBuilder
      .speak(speechText)
      .getResponse();
  },
};

const SessionEndedRequestHandler = {
  canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'SessionEndedRequest';
  },
  handle(handlerInput) {
    console.log(`Session ended with reason: ${handlerInput.requestEnvelope.request.reason}`);

    return handlerInput.responseBuilder.getResponse();
  },
};

const ErrorHandler = {
  canHandle() {
    return true;
  },
  handle(handlerInput, error) {
    console.log(`Error handled: ${error.message}`);

    return handlerInput.responseBuilder
      .speak('Sorry, I can\'t understand the command. Please say again.')
      .reprompt('Sorry, I can\'t understand the command. Please say again.')
      .getResponse();
  },
};

const skillBuilder = Alexa.SkillBuilders.standard();

exports.handler = skillBuilder
  .addRequestHandlers(
    LaunchRequestHandler,
    InProgressAddMovieIntentHandler,
    AddMovieIntentHandler,
    GetMoviesIntentHandler,
    InProgressRemoveMovieIntentHandler,
    RemoveMovieIntentHandler,
    HelpIntentHandler,
    CancelAndStopIntentHandler,
    SessionEndedRequestHandler
  )
  .addErrorHandlers(ErrorHandler)
  .withTableName(dynamoDBTableName)
  .withAutoCreateTable(true)
  .lambda();

部署时的代码：

lucasfalkowsky@Lucass-MacBook-Pro kneipe-temp % ask deploy -p ______
Deploy configuration loaded from ask-resources.json
Deploy project for profile [____]

==================== Deploy Skill Metadata ====================
[Warn]: The hash of current skill package folder does not change compared to the last deploy hash result, CLI will skip the deploy of skill package.
Skill ID: ___________

==================== Build Skill Code ====================
npm WARN dynamodb-starter@1.0.0 No repository field.

audited 18 packages in 1.094s
found 0 vulnerabilities

Skill code built successfully.
Code for region default built to /Users/___/Desktop/___/___/___/___/___/.ask/lambda/custom/build.zip successfully with build flow NodeJsNpmBuildFlow.

==================== Deploy Skill Infrastructure ====================
  ✔ Deploy Alexa skill infrastructure for region "default"
Skill infrastructures deployed successfully through @ask-cli/lambda-deployer.

==================== Enable Skill ====================
Skill is already enabled, skip the enable process.

Git 集线器上的 Original Project

Answer 1

据我了解，您在 cloudwatch 中缺少 lambda 日志。因此，要启用它们，您需要拥有一个具有托管策略的 IAM 角色 AWSLambdaBasicExecutionRole.

这为 lambda 提供了以下权限以登录到 cloudwatch：

        {
        "Version": "2012-10-17",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents"
                ],
                "Resource": "*"
            }
        ]
    }

AWS Lambda 以 CloudWatch Logs 为目标

AWS Lambda targerting CloudWatch Logs

amazon-web-services

aws-lambda

alexa

amazon-cloudwatchlogs