Serverless - Integrating With API Gateway with Lambda Functions by Raj Gupta

In this section, we show how to create and test an API with Lambda integration using the API Gateway console. With the Lambda proxy integration, when a client submits an API request, API Gateway passes to the integrated Lambda function the raw request as-is.

[root@ip-172-31-82-149 amazing-api]# sls invoke -f hello { "body": "{\"input\": {}, \"message\": \"Welcome to Raj by serverless\"}", "statusCode": 200 } [root@ip-172-31-82-149 amazing-api]#

[root@ip-172-31-82-149 amazing-api]# cat serverless.yml

functions: hello: handler: handler.hello events: - http: path: results method: get

[root@ip-172-31-82-149 amazing-api]# cat handler.py

import json def hello(event, context): if event['httpMethod']=='GET': body = { "message": "Welcome to Raj by serverless", "input": event } response = { "statusCode": 200, "body": json.dumps(body) } return response

[root@ip-172-31-82-149 amazing-api]# export AWS_ACCESS_KEY_ID=AKIAWSYHFCM3Y6ZLJWN6

[root@ip-172-31-82-149 amazing-api]# export AWS_SECRET_ACCESS_KEY=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

[root@ip-172-31-82-149 amazing-api]# serverless deploy

Serverless: Packaging service...

Serverless: Excluding development dependencies...

Serverless: Uploading CloudFormation file to S3...

Serverless: Uploading artifacts...

Serverless: Uploading service amazing-api.zip file to S3 (432 B)...

Serverless: Validating template...

Serverless: Updating Stack...

Serverless: Checking Stack update progress...

........................

Serverless: Stack update finished...

Service Information

service: amazing-api

stage: dev

region: us-east-1

stack: amazing-api-dev

resources: 10

api keys:

  None

endpoints:

  GET - https://dkoi2da9zk.execute-api.us-east-1.amazonaws.com/dev/results

functions:

  hello: amazing-api-dev-hello

layers:

  None

Serverless: Run the "serverless" command to setup monitoring, troubleshooting and testing.

[root@ip-172-31-82-149 amazing-api]#

Now if access the api gateway URL https://dkoi2da9zk.execute-api.us-east-1.amazonaws.com/dev/results