Author: Ujwal Pachghare

Step 1

Create a Lambda function with the following configurations:

Function name: api-testing

Runtime: Python 3.10

Architecture: x86_64

Permissions -> Execution role: Create a new role with basic lambda permissions

Step 2

import awsgi
from flask import (
    Flask,
    jsonify,
)

app = Flask(__name__)

@app.route("/")
def index():
    return jsonify(status=200, message="OK")

@app.route("/version")
def get_version():
    return {"version":"1.0.0"}

@app.route("/profile")
def get_name():
    return {"name":"AWS Dev"}

def lambda_handler(event, context):
    return awsgi.response(app, event, context, base64_content_types={"image/png"})

# Install pip on ubuntu(if not):
sudo apt install python3-pip -y  

# Install zip on ubuntu(if not):
sudo apt install zip -y 

# Install awsgi and flask in api directory 
pip install aws-wsgi flask -t api

# zip the code of api directory 
(cd api; zip ../api.zip -r .)

# Add lambda_function.py file in zipped directory
zip api.zip -u lambda_function.py

Step 3

Step 4

Select the following API Details:

Choose New API

API name: lambda-api

API endpoint type: Edge-optimized (it can be accesible from browser)

Fill in the following method details:

Method type:GET (To get the value)

Integration type:Lambda function (API integration with lambda)

Lambda proxy integration:ON (For sending request to lambda)

Lambda function: choose region and lambda function ARN

Default timeout:default (29 sec)

Step 5

Fill in the following Deploy API configurations:

Stage: \New stage**

Stage name: dev

Description: optional

Copy that URL and paste it into the browser; you will get the following result for a GET API of the root.

Testing version API: you will get result as follows:

Testing profile API: you will get result as follows:

Conclusion:

We have successfully created an automation task with the help of AWS Lambda and the Amazon API Gateway, and it will perform the following actions:

-> Whenever any of the above APIs are called by any user, it will trigger the Lambda function.

Final Step

Cleaning Up

1. Delete Lambda function

   ❎

   Go to the Lambda console -> Select function to delete -> Click on Delete -> Type delete in pop-up -> Delete

   

   

Delete API Gateway