Chilkat2-Python

eBay -- Download Data using FileTransferService

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Demonstrates how to download a data file using the eBay File Transfer API. Chilkat2-Python

import sys
import chilkat2

success = False

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

# Use a previously obtained access token.  The token should look something like this:
# "AgAAAA**AQA ..."
accessToken = "EBAY_ACCESS_TOKEN"

http = chilkat2.Http()

req = chilkat2.HttpRequest()

req.HttpVerb = "POST"
req.Path = "/FileTransferService"
req.ContentType = "application/xml"

# Build the XML body for the request.
xml = chilkat2.Xml()
xml.Tag = "downloadFileRequest"
xml.AddAttribute("xmlns","http://www.ebay.com/marketplace/services")
xml.UpdateChildContent("taskReferenceId","50013004806")
xml.UpdateChildContent("fileReferenceId","50015579016")

req.LoadBodyFromString(xml.GetXml(),"utf-8")

# The XML body looks like this:

# 	<?xml version="1.0" encoding="UTF-8"?>
# 	<downloadFileRequest xmlns="http://www.ebay.com/marketplace/services">
# 	<taskReferenceId>50013004806</taskReferenceId>
# 	<fileReferenceId>50015579016</fileReferenceId>
# 	</downloadFileRequest>

req.AddHeader("X-EBAY-SOA-OPERATION-NAME","downloadFile")
req.AddHeader("X-EBAY-SOA-SECURITY-TOKEN",accessToken)

resp = chilkat2.HttpResponse()
success = http.HttpSReq("storage.sandbox.ebay.com",443,True,req,resp)
if (success == False):
    print(http.LastErrorText)
    sys.exit()

statusCode = resp.StatusCode
print("Response status code = " + str(statusCode))

responseBody = chilkat2.BinData()
resp.GetBodyBd(responseBody)

# We can save the response body to a file for examination if we get an unanticipated response.  
# (It's binary, so it won't open well in a text editor.)
responseBody.WriteFile("qa_output/response.mime")

if (statusCode != 200):
    print("Failed.")
    sys.exit()

# The response body looks like this:

# 	--MIMEBoundaryurn_uuid_2B668636C1E17A4D4114925305818684241
# 	Content-Type: application/xop+xml; charset=utf-8; type="text/xml"
# 	Content-Transfer-Encoding: binary
# 	Content-ID: <0.urn:uuid:2B668636C1E17A4D4114925305818684242>
# 
# 	<?xml version='1.0' encoding='UTF-8'?>
# 	<downloadFileResponse xmlns="http://www.ebay.com/marketplace/services">
# 	<ack>Success</ack>
# 	<version>1.1.0</version>
# 	<timestamp>2017-04-18T15:49:41.868Z</timestamp>
# 	<fileAttachment>
# 	    <Size>587</Size>
# 	    <Data>
#                 <xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:urn:uuid:A37C3C73E994C267F11492530585522"/>
# 	    </Data>
# 	</fileAttachment>
# 	</downloadFileResponse>
# 	--MIMEBoundaryurn_uuid_2B668636C1E17A4D4114925305818684241
# 	Content-Type: application/zip
# 	Content-Transfer-Encoding: binary
# 	Content-ID: <urn:uuid:A37C3C73E994C267F11492530585522>
# 
# 	<the binary bytes of the zip start here...>
# 

# Load the binary response into a MIME object.
mime = chilkat2.Mime()
success = mime.LoadMimeBd(responseBody)
if (success == False):
    print(mime.LastErrorText)
    sys.exit()

# Make sure we have 2 sub-parts.  The 1st sub-part is the XML response, the 2nd sub-part
# is the zip containing the data.

# Note: The 2nd sub-part can be a "zip" or "gzip".  These are two different file formats.
# A zip is indicated with a Content-Type header equal to "application/zip",
# whereas a gzip is indicated with a Content-Type header equal to "application/x-gzip"
if (mime.NumParts != 2):
    print("Expected the MIME to have 2 parts.")
    print("NumParts = " + str(mime.NumParts))
    print("Failed.")
    sys.exit()

# Get the XML from the 1st MIME sub-part.

part0 = chilkat2.Mime()
success = mime.PartAt(0,part0)
if (success == False):
    print(mime.LastErrorText)
    sys.exit()

downloadResponseXml = part0.GetBodyDecoded()
xmlResp = chilkat2.Xml()
xmlResp.LoadXml(downloadResponseXml)
print("Download Response XML:")
print(xmlResp.GetXml())

print("----")

# Now get the zip from the second part (index=1), unzip, and examine..

part1 = chilkat2.Mime()
success = mime.PartAt(1,part1)
if (success == False):
    print(mime.LastErrorText)
    sys.exit()

zipData = chilkat2.BinData()
part1.GetBodyBd(zipData)

# Check to see if we have a zip or gzip.
sbContentType = chilkat2.StringBuilder()
sbContentType.Append(part1.ContentType)

xmlFromZip = chilkat2.Xml()

if (sbContentType.Contains("gzip",False) == True):
    # This is a gzip compressed file.
    gzip = chilkat2.Gzip()

    # in-place uncompress the data.
    # Note: The UncompressBd method was added in Chilkat v9.5.0.67
    success = gzip.UncompressBd(zipData)
    if (success == False):
        print(gzip.LastErrorText)
        sys.exit()

    xmlFromZip.LoadXml(zipData.GetString("utf-8"))

else:
    # This is a zip archive.

    # Load the body into a Zip object.
    zip = chilkat2.Zip()
    success = zip.OpenBd(zipData)
    if (success == False):
        print(zip.LastErrorText)
        sys.exit()

    # Save the .zip to a file (so we can examine it for debugging if something is not as expected)
    zipData.WriteFile("qa_output/ebay_data.zip")

    # The zip should contain a single XML file.
    if (zip.NumEntries != 1):
        print("Expected the .zip to have 1 entry.")
        print("NumEntries = " + str(zip.NumEntries))
        print("Failed.")
        sys.exit()

    entry = chilkat2.ZipEntry()
    success = zip.EntryAt(0,entry)
    if (success == False):
        print(zip.LastErrorText)
        sys.exit()

    xmlFromZip.LoadXml(entry.UnzipToString(0,"utf-8"))

print("XML contained in the zip:")
print(xmlFromZip.GetXml())
print("----")

print("Success.")