How to upload a file to S3 from static webpage using API Gateway and Lambda

How to upload a file to S3 from static webpage using API Gateway and Lambda

I am new to aws and trying to create simple webpage to upload file in S3 and maintain metadata in DynamoDB. I am able to create record in DynamoDB but not able to load file in S3 from my webpage. I get the following error,

"No such file or directory: ‘C:fakepath2018_pirl_replacement_notes.pdf’: OSError Traceback (most recent call last): File "/var/task/lambda_function.py", line 33, in lambda_handler s3.upload_file……."

I created index.html to create the web form which allows user to enter metadata and select the file to upload. It triggers lambda function where I want to store file in S3 bucket and metadata in DynamoDB.

This is how I am passing the File through webpage,

File:

In Lambda I am using

import boto3

import os

from contextlib import closing

from boto3.dynamodb.conditions import Key, Attr

def lambda_handler(event, context):

publicationtype = event["publicationtype"]

formnumber = event["formnumber"]

catalognumber = event["catalognumber"]

productcategory = event["productcategory"]

description = event["description"]

file = event["file"]

head, tail = os.path.split(file)

fileName = tail

print(‘File Name: ‘ + fileName)

Uploading file to S3 bucket

s3 = boto3.client(‘s3’)

s3.upload_file(file, os.environ[‘BUCKET_NAME’], fileName)

s3.put_object_acl(ACL=’public-read’,

Bucket=os.environ[‘BUCKET_NAME’],

Key= fileName)

location = s3.get_bucket_location(Bucket=os.environ[‘BUCKET_NAME’])

region = location[‘LocationConstraint’]

if region is None:

url_begining = "https://s3.amazonaws.com/"

else:

url_begining = "https://s3-" + str(region) + ".amazonaws.com/"

url = url_begining

str(os.environ[‘BUCKET_NAME’])

"/"

str(fileName)

print(‘S3 File URL: ‘ + url)

Can you let me know what I am missing or doing wrong?

Thanks