[AWS] Lambda for S3

Download file from S3 and upload this again.

import boto3
import os
import sys
import urllib
 
s3_client = boto3.client('s3')
 
def handler(event, context):
    bucket = 'codebuild-oregon-louie0724-output-bucket'
    key = 'test01.png'
    raw_key = urllib.parse.unquote_plus(key)
    download_path = '/tmp/{}'.format(key)
    upload_path = '/tmp/{}'.format(key)
 
    s3_client.download_file(bucket, raw_key, download_path)
 
    s3_client.upload_file(upload_path, bucket, 'thumbnail-{}'.format(raw_key))
 
    print("success Upload")
 

More Simple programming.

import boto3
import os
import sys
import urllib
 
s3_client = boto3.client('s3')
 
def handler(event, context):
    bucket = 'codebuild-oregon-louie0724-output-bucket'
    key = 'test01.png'
    #raw_key = urllib.parse.unquote_plus(key)
    download_path = '/tmp/test01.png'
    upload_path = '/tmp/test01.png'
 
    s3_client.download_file(bucket, key, download_path)
 
    s3_client.upload_file(upload_path, bucket, 'thumbnail-test01.png')
 

[reference] https://www.qwiklabs.com