用Serverless技術快速開發line聊天機器人
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運用 AWS Serverless Architecture，建立並執行你的 LINE Chatbot 程式，無須擔心伺服器的問題，它會運用其「高可用性、高擴展性」，來處理及執行所需的各項工作。 1. LINE Chatbot 的核心 － Messaging APIs 的新功能 2. AWS Serverless Chatbot 架構與設定 － 了解 Serverless 架構，申請作業與開發環境的基本設定 3. 運用 LINE Python SDK 實作與佈署 － LINE Python SDK 簡化了訊息的包裝與解析，讓你專注在你的商業邏輯
![Serverless: standalone function
$ serverless create --template aws-python
Edit handler.py, serverless.yml
$ serverless deploy
$ serverless invoke
[ local ]
--function function_name
$ serverless logs --function function_name](https://image.slidesharecdn.com/serverlessline-170314124525/85/Serverless-line-54-320.jpg)
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用Serverless技術快速開發line聊天機器人
- 2. Outline • LINE Chatbot Enabler - Messaging API • Serverless Architecture • Charbot architecture on AWS • Implementation & Deployment
- 3. Who AM I • Chasing New Technologies • Principal Application Analyst @LINE • Service/Solution Architecture, BigData, Software Engineering, • @Youku @miiiCasa @Yahoo!Kimo
- 5. What’s New • New Features • API Design • Beacon Event
- 7. Group/Room
- 12. More Template Messages • Template message is HTML type message • Develop more templates • Even work with partners
- 14. Reply / Push user send message Reply from bot Push from bot ne
- 15. How Does It Work? LINE APP (channel ) webhook (https) API call (https)response (https) request (https) Your Bot LINE Bot Platform
- 17. Intuitive & Simplicity & Secure
- 18. Messaging API Bot API (Deprecated) Developer Trial Account Trial Account Webhook event object Receiving message Receiving operation Imagemap message Rich message Reply message Sending message Push message Sending message Template message n/a Reply token n/a User_id (different from each Bot provider) Mid
- 19. Webhook Event Object Message Text, Image, Audio, Video, Sticker, Location Follow Added as friend Unfollow Blocked Join Join group/room Leave new Leave group/room Postback new From template action Beacon new Got beacon signal
- 23. Push Message
- 24. Additional APIs • Get Content • GET https://api.line.me/v2/bot/message/ {messageId}/content • Get Profile • GET https://api.line.me/v2/bot/profile/ {userId}
- 25. SDK Support • Easily use • Wrap up data parsing • Simplify message composing • Many languages • https://github.com/line/
- 27. Develop NOW !!! (App) https://business.line.me (Bot) https://developers.line.me (Bot) https://admin-official.line.me
- 28. Terms & Relationship Personal LINE Account Business LINE OA BC(Business Connect) LINE @ Messaging API
- 29. Login & Add Company https://business.line.me/en/
- 36. Channel
- 37. Channel ID Channel Webhook URL Channel Access
- 39. What is Serverless? • NOT no servers, NO maintenances (setup, monitor, scale, security…) • Development focus on functions • No always-on servers
- 40. Example - From
- 41. Example - To
- 42. Pros • Reduced Operation Cost • Reduced Development Cost • Scaling Cost • Time to market/Experimentation
- 43. Cons • Vendor Control • Multi-tenancy • Vendor Lock-in • Security Concerns • No in-server state • Startup Latency
- 45. AWS Lambda • Deploy functions in Java, Python, Node.js, C# • Build-in scalability and high availability • Well integrated with other AWS services • Pay as you go
- 46. What can you do with AWS Lambda? • Build event-driven applications • Build APIs together with Amazon API Gateway • Restful APIs • Resources, methods
- 49. A simple Lambda function in Python" • aws lambda create-function --function-name add -- handler myFunc.lambda_handler --runtime python2.7 -- zip-file fileb://myFunc.zip --memory-size 128 --role arn:aws:iam::ACCOUNT_NUMBER:role/lambda_basic_execution • curl -H "Content-Type: application/json" -X POST -d "{"value1":5, "value2":7}" https://API_ENDPOINT
- 50. That’s great, but… • No one wants to code in the AWS console (right?) • Managing functions with the AWS CLI isn’t dev-friendly • Managing APIs with the AWS CLI quite complex (low- level calls) • CloudFormation doesn’t make it easy to deploy and manage serverless applications (custom resources) • So what are the options?
- 51. Serverless Tools • Development • Serverless Framework • Gordon • AWS Chalice • More frameworks: Kappa, Apex, Zappa, Docker-lambda • AWS Lambda plugin for Eclipse • Deployment • AWS Serverless Application Framework (SAM)
- 53. The Severless Framework • Announced at re:Invent 2015 by Austen Collins and Ryan Pendergast • Supports Node.js, as well as Python and Java (with restrictions) • Auto-deploys and runs Lambda functions, locally or remotely • Auto-deploys your Lambda event sources: API Gateway, S3, DynamoDB, etc. • Creates all required infrastructure with CloudFormation • Simple configuration in YML https://serverless.com
- 54. Serverless: standalone function $ serverless create --template aws-python Edit handler.py, serverless.yml $ serverless deploy $ serverless invoke [ local ] --function function_name $ serverless logs --function function_name
- 55. Gordon • Released in Oct’15 by Jorge Batista • Supports Python, Javascript, Golang, Java, Scala, Kotlin (including in the same project) • Auto-deploys and runs Lambda functions, locally or remotely • Auto-deploys your Lambda event sources: API Gateway, CloudWatch Events, DynamoDB Streams, Kinesis Streams, S3 • Creates all required infrastructure with CloudFormation • Simple configuration in YML https://github.com/jorgebastida/gordon
- 56. Gordon: “Hello World” API $ gordon startproject helloworld $ gordon startapp helloapp Write hellofunc() function $ gordon build $ echo '{"name":"Julien"}' | gordon run helloapp.hellofunc $ gordon apply --stage stage_name $ http post $API_ENDPOINT name=Julien
- 57. Zappa "Think of it as "serverless" web hosting for your Python web apps" • Just add your Python code • Deploy with a single call and zero config • The API is created automatically, the IAM policy is auto-generated • Run APIs locally on port 8000 (similar to Flask) • Fast & lightweight framework • 100% boto3 calls (AWS SDK for Python) —> fast https://github.com/awslabs/chalice
- 58. Zappa: “Hello World” API Write your function in app.py (flask or django) $ zappa init $ zappa deploy dev $ zappa tail dev
- 59. Summing things up Serverless • The most popular serverless framework • Built with and for Node.js. Python and Java: YMMV • Rich features, many event sources • Not a web framework Gordon • Great challenger! • Node.js, Python, Java, Scala, Golang • Comparable to Serverless feature- wise • Not a web framework Zappa • Python only • Does only one thing, but does it great • Dead simple, zero config • Flask, Django web framework
- 60. Deployment
- 61. AWS Serverless Application Model (SAM) "formerly known as Project Flourish" • CloudFormation extension released in Nov’16 to bundle Lambda functions, APIs & events • 3 new CloudFormation resource types • AWS::Serverless::Function • AWS::Serverless::Api • AWS::Serverless::SimpleTable • 2 new CloudFormation commands • aws cloudformation package • aws cloudformation deploy • Integration with CodeBuild and CodePipeline for CI/CD • Expect SAM to be integrated in most / all frameworks
- 62. Demo - aws cli - serverless - zappa https://github.com/xfalcons/serverless-aws
- 63. Thank you and Enjoy!