serverless - send email and update status

2019/3/22
@ branch8 公司內部技術分享

Transcript

1. Serverless Anna Su Send Email and update status
2. Why not VM 即使 server 沒有收到任何 request ，還是會被收取費⽤用 必須設定與持續管理理 Server 需要經常更更新 Server，避免安全性問題 當我們使⽤用量量變⼤大時，需要管理理 server 的 scaling up
 如果使⽤用量量變低時，也需要 scaling down
3. Why Serverless ⾃自動擴展 依照使⽤用量量付費 開發速度更更快 零管理理
4. You don’t have to think about those servers. You just focus on code.
5. What’s Serverless Serverless is an execution model where the cloud provider is responsible for executing a piece of code by dynamically allocating the resources.
6. What’s Serverless The code is typically run inside stateless containers. Can be triggered by a variety of events including http requests, database events, monitoring alerts, file uploads, scheduled events, etc
7. How Serverless Works @aws Upload your code to AWS Lambda Set up your code to trigger from other AWS services, HTTP endpoints, or in-app activity Lambda runs your code only when triggered, using only the compute resources needed Pay just for the compute time you use
8. Install Serverless npm install -g serverless
9. Deploy a Node.js function to AWS Lambda
10. sls
11. sls create -t aws-nodejs
12. brew install awscli
13. aws configure
14. module.exports.hello = async (event) => { return { statusCode: 200, body: JSON.stringify({ message: 'Go Serverless v1.0! Your function executed successfully!', input: event, }), }; }; handler.js
15. service: aws-nodejs-demo
 provider: name: aws runtime: nodejs8.10
 functions: hello: handler: handler.hello events: - http: path: / method: get serverless.yml
16. sls deploy
17. Serverless Project for Email
18. HASURA SendGrid AWS Lambda Using
19. HASURA build GraphQL apps backed by Postgres
20. HASURA Event trigger
21. SendGrid email service trusted by developers and marketers
22. AWS Lambda run code without thinking about servers
23. Send Email HASURA event trigger webhook Serverless AWS Lambda
24. Update Email Status notification webhook Serverless AWS Lambda
25. Email Flow HASURA Realtime Serverless Send email HASURA Event SendGrid Event Notification SendGrid Serverless Update email
26. Send Email Flow HASURA Realtime Serverless Send email HASURA Event SendGrid
27. Create HASURA Table
28. Creating an event-trigger to listen to a database change on Postgres
29. Create Serverless (Send Email) const sgMail = require('@sendgrid/mail'); module.exports.run = async event => { try { let { table: { name: table_name, schema }, event: { data: { new: { to, from, subject, content: html, id }, }, }, } = JSON.parse(event.body); sgMail.setApiKey(process.env.SENDGRID_API_KEY);
30. SendGrid Settings
31. AWS Lambda Settings
32. Update Email Status Flow HASURA Realtime Serverless Send email HASURA Event SendGrid Event Notification SendGrid Serverless Update email
33. Create Serverless (Update Email) const axios = require('axios'); module.exports.run = async event => { try { const body = JSON.parse(event.body); const { id, event: status, schema, table_name } = body[body.length - 1]; await axios({ method: 'post', headers: { 'x-hasura-admin-secret': process.env.HASURA_SECRET, }, url: process.env.HASURA_URL, data: { variables: {
34. AWS Lambda Settings
35. SendGrid Settings
36. provider: functions: sendEmailFromHasura: handler: sendEmailFromHasura.run events: - http: path: send-email-from-hasura method: post updateHasuraEmailStatus: handler: updateHasuraEmailStatus.run events: - http: path: update-hasura-email-status method: post plugins: - serverless-plugin-monorepo serverless.yml
37. sls deploy
38. AWS Lambda function
39. Reference https://serverless.com/ https://aws.amazon.com/tw/lambda/ Develop a Serveerless Backend using Node.js on AWS Lambda What is Serverless ? Serverless overview What is Serverless Architecture? https://www.flaticon.com
40. Thanks Anna Su