aws-cdk-lib/aws-appsync/test/verify/lambda-tutorial/lambda-tutorial.js

Version 2 of the AWS Cloud Development Kit library

"use strict";exports.handler=(event,context,callback)=>{console.log("Received event {}",JSON.stringify(event,3));var posts={1:{id:"1",title:"First book",author:"Author1",url:"https://amazon.com/",content:"SAMPLE TEXT AUTHOR 1 SAMPLE TEXT AUTHOR 1 SAMPLE TEXT AUTHOR 1 SAMPLE TEXT AUTHOR 1 SAMPLE TEXT AUTHOR 1 SAMPLE TEXT AUTHOR 1",ups:"100",downs:"10"},2:{id:"2",title:"Second book",author:"Author2",url:"https://amazon.com",content:"SAMPLE TEXT AUTHOR 2 SAMPLE TEXT AUTHOR 2 SAMPLE TEXT",ups:"100",downs:"10"},3:{id:"3",title:"Third book",author:"Author3",url:null,content:null,ups:null,downs:null},4:{id:"4",title:"Fourth book",author:"Author4",url:"https://www.amazon.com/",content:"SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4 SAMPLE TEXT AUTHOR 4",ups:"1000",downs:"0"},5:{id:"5",title:"Fifth book",author:"Author5",url:"https://www.amazon.com/",content:"SAMPLE TEXT AUTHOR 5 SAMPLE TEXT AUTHOR 5 SAMPLE TEXT AUTHOR 5 SAMPLE TEXT AUTHOR 5 SAMPLE TEXT",ups:"50",downs:"0"}},relatedPosts={1:[posts[4]],2:[posts[3],posts[5]],3:[posts[2],posts[1]],4:[posts[2],posts[1]],5:[]};if(Array.isArray(event)){console.log("Got an BatchInvoke Request. The payload has %d items to resolve.",event.length);const field=event[0].field;switch(field){case"relatedPostsMaxBatchSize":case"relatedPosts":for(var results=[],i=0;i<event.length;i++)console.log("post {}",JSON.stringify(event[i].source)),results.push(relatedPosts[event[i].source.id]);console.log("results {}",JSON.stringify(results)),callback(null,results);break;default:callback("Unknown field, unable to resolve"+field,null);break}}else switch(console.log("Got an Invoke Request."),event.field){case"getPost":var id=event.arguments.id;callback(null,posts[id]);break;case"allPosts":var values=[];for(var d in posts)values.push(posts[d]);callback(null,values);break;case"addPost":callback(null,event.arguments);break;case"addPostErrorWithData":var id=event.arguments.id,result=posts[id];result.errorMessage="Error with the mutation, data has changed",result.errorType="MUTATION_ERROR",callback(null,result);break;default:callback("Unknown field, unable to resolve"+event.field,null);break}};