(CkPython) Create S3 Pre-Signed URL for Upload

Demonstrates how to generate a pre-signed URL for S3 uploads.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# Note: This example requires Chilkat v9.5.0.83 or greater.

http = chilkat.CkHttp()

http.put_AwsAccessKey("AWS_ACCESS_KEY")
http.put_AwsSecretKey("AWS_SECRET_KEY")

# Make sure to set your AWS region correctly
http.put_AwsRegion("us-east-1")

bucketName = "chilkat200"
objectName = "starfish/starfish.jpg"
awsService = "s3"
httpVerb = "PUT"

# The signed URL will be valid for this number of seconds:
numSecondsValid = 86400

# Choose between a URL beginning with "http://" or "https://"...
bUseHttps = False

# Generate the pre-signed URL
preSignedUrl = http.s3_GenPresignedUrl(httpVerb,bUseHttps,bucketName,objectName,numSecondsValid,awsService)
if (http.get_LastMethodSuccess() == False):
    print(http.lastErrorText())
    sys.exit()

print("Presigned URL for Upload: " + preSignedUrl)

# Here's an example of a pre-signed URL
# 
# http://chilkat200.s3.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIBJLOVZVXAU2AFUA%2F20200623%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200623T234049Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=xxxxxeaea071178d772856c0a4e4c0114a8d9992f0d0812955e490d0exxxxxxx
# 

# You can use the pre-signed URL to upload from Chilkat
# For example, upload by streaming from a local file
# resp is a CkHttpResponse
resp = http.PFile("PUT",preSignedUrl,"qa_data/jpg/starfish.jpg","image/jpg",False,False)
if (http.get_LastMethodSuccess() == False):
    print(http.lastErrorText())
    sys.exit()

print("response status code = " + str(resp.get_StatusCode()))
print("response body size: " + str(resp.get_ContentLength()))
if (resp.get_ContentLength() > 0):
    print("response body:")
    print(resp.bodyStr())