UploadFileToS3UsingAPIGateway.txt

1.	Create a S3 Bucket
2.	Create a Lambda Function 

import json
import base64
import boto3


def lambda_handler(event, context):
    s3 = boto3.client("s3")

    # retrieving data from event
    get_file_content = event["content"]

    # decoding data
    decode_content = base64.b64decode(get_file_content)

    # uploading file to S3 bucket
    s3_upload = s3.put_object(Bucket="firebasemumbai", Key="file.pdf", Body=decode_content)

    return {"statusCode": 200, "body": json.dumps("Thanks for using!")}

3.	Add a permission to lambda function for S3

4.	Create a API Gateway / Resources and Methods 

5.	Update Mappings template to "When there are no templates defined " in Integration Request and add 
content-type as "application/pdf"

Add this to Generate template

{
    "content": "$input.body"
}

6.	Go To Settings and Update Binary Media Types as "application/pdf"

7.	Deploy your API

8.	Test your postman and send binary data through postman