Serverless Frameworks on AWS
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This document discusses serverless frameworks on AWS like AWS Lambda, the Serverless framework, Gordon, and AWS Chalice. It provides an overview of each tool and code samples to define and deploy Lambda functions from the command line or within the frameworks. Various options are presented for developing, testing, and deploying serverless applications locally and to AWS.
![A simple Lambda function in Python"
def lambda_handler(event,context):
result = event['value1'] + event['value2']
return result
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
12](https://image.slidesharecdn.com/20161206parisserverless-161206211824/85/Serverless-Frameworks-on-AWS-8-320.jpg)
![Serverless: standalone function
$ serverless create --template aws-python
Edit handler.py, serverless.yml and event.json
$ serverless deploy
$ serverless invoke
[ local ] Only supported for Node.js :-/
--function function_name
[ --path event.json ]
$ serverless logs --function function_name](https://image.slidesharecdn.com/20161206parisserverless-161206211824/85/Serverless-Frameworks-on-AWS-13-320.jpg)
![AWS Chalice: “Hello World” API
$ chalice new-project helloworld
Write your function in app.py
$ chalice local
$ chalice deploy
$ export API_ENDPOINT = `chalice url`
$ http $API_ENDPOINT
$ http put $API_ENDPOINT’hello/julien’
$ chalice logs [ --include-lambda-messages ]](https://image.slidesharecdn.com/20161206parisserverless-161206211824/85/Serverless-Frameworks-on-AWS-18-320.jpg)
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Serverless Frameworks on AWS
- 1. ©2015, Amazon Web Services, Inc. or its affiliates. All rights reserved Serverless frameworks on AWS Julien Simon, Principal Technical Evangelist, AWS [email protected] @julsimon
- 2. AWS Lambda • Announced at re:Invent 2014 • Deploy functions in Java, Python, Node.js and C# • Just code, without the infrastructure drama • Built-in scalability and high availability • Well integrated with other AWS services • Pay as you go • Combination of execution time (100ms slots) & memory used • Free tier available AWS re:Invent 2014 | (MBL202) NEW LAUNCH: Getting Started with AWS Lambda https://www.youtube.com/watch?v=UFj27laTWQA
- 3. What can you do with AWS Lambda? • Grow ‘connective tissue’ in your AWS infrastructure – Example: http://www.slideshare.net/JulienSIMON5/building-a-serverless-pipeline • Build event-driven applications • Build APIs together with Amazon API Gateway • RESTful APIs • Resources, methods • Stages http://aws.amazon.com/lambda http://aws.amazon.com/apigateway
- 4. AWS Lambda " + " Managed services" = " Serverless architecture" Reference architectures: http://www.allthingsdistributed.com/2016/06/aws-lambda-serverless-reference-architectures.html
- 5. Werner Vogels, CTO, Amazon.com AWS re:Invent 2015
- 6. https://read.acloud.guru/serverless-the-future-of-software-architecture-d4473ffed864 A Cloud Guru: 100% Serverless
- 7. Typical development workflow with AWS Lambda 1. Write and deploy a Lambda function 2. Create and deploy a REST API with API Gateway 3. Connect the API to the Lambda function 4. Invoke the API 5. Test, debug and repeat ;)
- 8. A simple Lambda function in Python" def lambda_handler(event,context): result = event['value1'] + event['value2'] return result 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 12
- 9. 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?
- 10. 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)
- 11. " " Development"Code samples available at https://github.com/juliensimon/aws/tree/master/lambda_frameworks " "
- 12. The Serverless framework " formerly known as JAWS: Just AWS Without Servers • 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 http://github.com/serverless/serverless https://serverless.com AWS re:Invent 2015 | (DVO209) https://www.youtube.com/watch?v=D_U6luQ6I90 & https://vimeo.com/141132756
- 13. Serverless: standalone function $ serverless create --template aws-python Edit handler.py, serverless.yml and event.json $ serverless deploy $ serverless invoke [ local ] Only supported for Node.js :-/ --function function_name [ --path event.json ] $ serverless logs --function function_name
- 14. Serverless: API + function Update serverless.yml, add JSON processing in handler.py $ serverless deploy --stage stage_name $ serverless info $ curl -H "Content-Type: application/json" -X POST -d "{"value1":5, "value2":7}" https://API_ENDPOINT
- 15. 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 https://news.ycombinator.com/item?id=11821295
- 16. 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
- 17. AWS Chalice " Think of it as a serverless framework for Flask apps" • Released in Jul’16, still in beta • 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) à fast – No integration with CloudFormation à no creation of event sources https://github.com/awslabs/chalice https://aws.amazon.com/blogs/developer/preview-the-python-serverless-microframework-for-aws/
- 18. AWS Chalice: “Hello World” API $ chalice new-project helloworld Write your function in app.py $ chalice local $ chalice deploy $ export API_ENDPOINT = `chalice url` $ http $API_ENDPOINT $ http put $API_ENDPOINT’hello/julien’ $ chalice logs [ --include-lambda-messages ]
- 19. AWS Chalice: PUT/GET in S3 bucket $ chalice new-project s3test Write your function in app.py $ chalice local $ http put http://localhost:8000/objects/doc.json value1=5 value2=8 $ http get http://localhost:8000/objects/doc.json $ chalice deploy stage_name $ export API_ENDPOINT=`chalice url` $ http put $API_ENDPOINT/objects/doc.json value1=5 value2=8 $ http get $API_ENDPOINT/objects/doc.json
- 20. 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 Chalice AWS project, in beta Python only Does only one thing, but does it great Dead simple, zero config Flask web framework
- 21. More Lambda frameworks • Kappa https://github.com/garnaat/kappa – Released Dec’14 by Mitch Garnaat, author of boto and the AWS CLI (still maintained?) – Python only, multiple event sources • Apex https://github.com/apex/apex – Released in Dec’15 by TJ Holowaychuk – Python, Javascript, Java, Golang – Terraform integration to manage infrastructure for event sources • Zappa https://github.com/Miserlou/Zappa – Released in Feb’16 by Rich Jones – Python web applications on AWS Lambda + API Gateway • Docker-lambda https://github.com/lambci/docker-lambda – Released in May’16 by Michael Hart – Run functions in Docker images that “replicate” the live Lambda environment
- 22. AWS Lambda plug-in for Eclipse https://java.awsblog.com/post/TxWZES6J1RSQ2Z/Testing-Lambda-functions-using-the-AWS-Toolkit-for-Eclipse https://aws.amazon.com/blogs/developer/aws-toolkit-for-eclipse-serverless-application Code, test and deploy Lambdas from Eclipse Run your functions locally and remotely Test with local events and Junit4 Deploy standalone functions, or with the " AWS Serverless Application Model (Dec’16)
- 23. " " Deployment"
- 24. 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 https://aws.amazon.com/fr/blogs/compute/introducing-simplified-serverless-application-deplyoment-and-management https://github.com/awslabs/serverless-application-model/
- 25. AWSTemplateFormatVersion: '2010-09-09' Transform: AWS::Serverless-2016-10-31 Description: Get items from a DynamoDB table. Resources: GetFunction: Type: AWS::Serverless::Function Properties: Handler: index.get Runtime: nodejs4.3 Policies: AmazonDynamoDBReadOnlyAccess Environment: Variables: TABLE_NAME: !Ref Table Events: GetResource: Type: Api Properties: Path: /resource/{resourceId} Method: get Table: Type: AWS::Serverless::SimpleTable Sample SAM template for: • Lambda function • HTTP GET API • DynamoDB table
- 27. Latest Lambda features • 18/11 Environment variables • 01/12 New service: AWS Lambda@Edge • 01/12 New service: AWS Step Functions • 01/12 New service: AWS Greengrass • 01/12 Dead letter queues • 01/12 C# support https://aws.amazon.com/fr/blogs/compute/simplify-serverless-applications-with-environment-variables-in-aws-lambda/ https://aws.amazon.com/blogs/aws/coming-soon-lambda-at-the-edge/ https://aws.amazon.com/blogs/aws/new-aws-step-functions-build-distributed-applications-using-visual-workflows/ https://aws.amazon.com/blogs/aws/aws-greengrass-ubiquitous-real-world-computing/ https://aws.amazon.com/fr/blogs/compute/robust-serverless-application-design-with-aws-lambda-dlq/ https://aws.amazon.com/fr/blogs/compute/announcing-c-sharp-support-for-aws-lambda/
- 28. New Lambda videos from re:Invent 2016 AWS re:Invent 2016: What’s New with AWS Lambda (SVR202) https://www.youtube.com/watch?v=CwxWhyGteNc AWS re:Invent 2016: Serverless Apps with AWS Step Functions (SVR201) https://www.youtube.com/watch?v=75MRve4nv8s AWS re:Invent 2016: Real-time Data Processing Using AWS Lambda (SVR301) https://www.youtube.com/watch?v=VFLKOy4GKXQ AWS re:Invent 2016: Serverless Architectural Patterns and Best Practices (ARC402) https://www.youtube.com/watch?v=b7UMoc1iUYw AWS re:Invent 2016: Bringing AWS Lambda to the Edge (CTD206) https://www.youtube.com/watch?v=j26novaqF6M AWS re:Invent 2016: Ubiquitous Computing with Greengrass (IOT201) https://www.youtube.com/watch?v=XQQjX8GTEko
- 29. The only Lambda book you need to read Written by AWS Technical Evangelist Danilo Poccia Released in Nov’16 https://www.amazon.com/Aws-Lambda-Action- Event-driven-Applications/dp/1617293717/