谷歌云功能 - 无法读取属性“getApplicationDefault”

Question

我已经部署了一个云函数来调用数据流管道模板并尝试通过将文件放在云存储桶中来触发该函数。

作为node.js的先决条件我已经完成了，

npm init
npm install --save googleapis

索引.js

const google = require('googleapis');

exports.goWithTheDataFlow = function(event, callback) {
 const file = event.data;



   google.auth.getApplicationDefault(function (err, authClient, projectId) {
     if (err) {
       throw err;
     }

 console.log(projectId);
     if (authClient.createScopedRequired && authClient.createScopedRequired()) {
       authClient = authClient.createScoped([
         'https://www.googleapis.com/auth/cloud-platform',
         'https://www.googleapis.com/auth/userinfo.email'
       ]);
     }

     const dataflow = google.dataflow({ version: 'v1b3', auth: authClient });
            console.log(`gs://${file.bucket}/${file.name}`);
     dataflow.projects.templates.create({
       projectId: projectId,
       resource: {
         parameters: {
           inputFile: `gs://${file.bucket}/${file.name}`

         },
         jobName: 'cloud-fn-dataflow-test',
         gcsPath: 'gs://jaison/templates/ApacheBeamTemplate'
       }
     }, function(err, response) {
       if (err) {
         console.error("problem running dataflow template, error was: ", err);
       }
       console.log("Dataflow template response: ", response);
       callback();
     });

   });

 callback();
};

用于部署云功能的命令：

gcloud beta functions deploy goWithTheDataFlow --stage-bucket cf100stage --trigger-bucket cf100

数据流（Apache 梁）： 我能够从控制台执行数据流模板，下面是模板的路径，

'gs://jaison/templates/ApacheBeamTemplate'

函数崩溃并出现以下错误：

TypeError：无法读取未定义的属性“getApplicationDefault” 在exports.goWithTheDataFlow (/user_code/index.js:11:17) 在 /var/tmp/worker/worker.js:695:16 在 /var/tmp/worker/worker.js:660:9 在 _combinedTickCallback (internal/process/next_tick.js:73:7) at process._tickDomainCallback (internal/process/next_tick.js:128:9)

看起来我缺少库。不知道如何解决这个问题。请帮忙。

Answer 1

我的云功能适用于以下更改，

1.将GOOGLE_APPLICATION_CREDENTIALS设置为服务帐号json文件

export GOOGLE_APPLICATION_CREDENTIALS="/path/of/svc/json/file.json"

2.index.js

var {google} = require('googleapis');

exports.TriggerBeam = (event, callback) => {


const file = event.data;
  const context = event.context;

  console.log(`Event ${context.eventId}`);
  console.log(`  Event Type: ${context.eventType}`);
  console.log(`  Bucket: ${file.bucket}`);
  console.log(`  File: ${file.name}`);
  console.log(`  Metageneration: ${file.metageneration}`);
  console.log(`  Created: ${file.timeCreated}`);
  console.log(`  Updated: ${file.updated}`);

  google.auth.getApplicationDefault(function (err, authClient, projectId) {
     if (err) {
       throw err;
     }

 console.log(projectId);

 const dataflow = google.dataflow({ version: 'v1b3', auth: authClient });
        console.log(`gs://${file.bucket}/${file.name}`);
 dataflow.projects.templates.create({
   projectId: projectId,
   resource: {
     parameters: {
       inputFile: `gs://${file.bucket}/${file.name}`

     },
     jobName: 'cloud-fn-beam-test',
     gcsPath: 'gs://jaison/templates/ApacheBeamTemplate'
   }
 }, function(err, response) {
   if (err) {
     console.error("problem running dataflow template, error was: ", err);
   }
   console.log("Dataflow template response: ", response);
   callback();
 });

   });

 callback();
};