Chilkat2-Python

REST Download Binary to Memory (Byte Array) (Amazon S3)

See more Amazon S3 (new) Examples

Demonstrates how to make a REST call that returns a binary response body. This example is valid for reasonably small files that fit in memory. The example shows how to download a small JPG from the Amazon S3 service. For larger files, Chilkat provides streaming functionality to stream directly to a file, or to make an asynchronous call where the foreground thread can read the response body stream. Chilkat2-Python

import sys
import chilkat2

success = False

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

rest = chilkat2.Rest()

# Connect to the Amazon AWS REST server.
bTls = True
port = 443
bAutoReconnect = True
success = rest.Connect("s3.amazonaws.com",port,bTls,bAutoReconnect)

# ----------------------------------------------------------------------------
# Important: For buckets created in regions outside us-east-1,
# there are three important changes that need to be made.
# See Working with S3 Buckets in Non-us-east-1 Regions for the details.
# ----------------------------------------------------------------------------

# Provide AWS credentials for the REST call.
authAws = chilkat2.AuthAws()
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.ServiceName = "s3"
success = rest.SetAuthAws(authAws)

# Set the bucket name via the HOST header.
# In this case, the bucket name is "chilkat100".
rest.Host = "chilkat100.s3.amazonaws.com"

# Send the request to download the JPG.
success = rest.SendReqNoBody("GET","/starfish.jpg")
if (success != True):
    print(rest.LastErrorText)
    sys.exit()

# Read the response header.
responseStatusCode = rest.ReadResponseHeader()
if (responseStatusCode < 0):
    print(rest.LastErrorText)
    sys.exit()

print("Response status code = " + str(responseStatusCode))

# We expect a 200 response status if the JPG data is coming.
# Otherwise, we'll get a string response body with an error message(or no response body).
if (responseStatusCode == 200):
    # jpgData is a memoryview
    jpgData = rest.ReadRespBodyBinary()
    if (rest.LastMethodSuccess != True):
        print(rest.LastErrorText)
    else:
        print("Successfully received the JPG bytes..")

else:
    errResponse = rest.ReadRespBodyString()
    if (rest.LastMethodSuccess != True):
        print(rest.LastErrorText)
    else:
        print(errResponse)