Unbreakable Linux Network APIs example

I posted a short blog entry about the recently released ULN APIs the other day with a sample of how to call the different APIs. Here is a concrete example to use the API to find a package in a channel and download it.

$ ./ulnget.py kernel-headers.2.6.32-71.29 ol6_x86_64_latest
Searching for 'kernel-headers.2.6.32-71.29' in channel 'ol6_x86_64_latest'

Logging in...
Logged in...
Retrieving all packages...
Found kernel-headers.2.6.32-71.29.1.el6
Getting package details...
Downloading https://uln.oracle.com/XMLRPC/GET-REQ/ol6_x86_64_latest/
kernel-headers-2.6.32-71.29.1.el6.x86_64.rpm...

Logged out...

The code for the above is pasted below, this is just a very simplistic example...

#!/usr/bin/python
try:
    import os
    import sys
    import getpass
    import datetime
    import xmlrpclib

except ImportError, e:
    raise ImportError (str(e) + ': Module  not found')

if len(sys.argv) != 3:
   print "Usage : ulnget.py [packagename] [channelname]"
   exit(1) 

search = str(sys.argv[1])
channelLabel = str(sys.argv[2])

print "Searching for '%s' in channel '%s'" % (search, channelLabel)

SERVER_URL = 'https://linux-update.oracle.com/rpc/api'

USERNAME = 'username'
PASSWORD = 'password'

# channelLabel = 'ol6_x86_64_latest'

client = xmlrpclib.Server(SERVER_URL)

print ""

# login
print "Logging in..."
sessionKey = client.auth.login(USERNAME,PASSWORD)
if len(sessionKey) != 43:
   print "Invalid %d sessionKey : '%s'" % sessionKey
   exit(1)

print "Logged in..."

print "Retrieving all packages..."
packageList = client.channel.software.listAllPackages(sessionKey, channelLabel)

for package in packageList:
   packageName = '%s.%s-%s' % (package['package_name'],package['package_version']
      ,package['package_release'])
   if search in packageName:
      print "Found %s" % packageName
      pid = package['package_id']
      print "Getting package details..."
      packageDetail = client.packages.getDetails(sessionKey, pid)
      url = packageDetail['download_urls'][0]
      import  urllib2
      req = urllib2.Request(url,headers={'X-ULN-API-User-Key': sessionKey})
      try:
          print "Downloading %s..." %url
          response = urllib2.urlopen(req)
          contents = response.read()
      except urllib2.HTTPError, e:
          print
          print "HTTP error code  : %d" %e.code
      except Exception, e:
          print
          print str(e)

print ""

retval = client.auth.logout(sessionKey)
if retval == 1:
  print "Logged out..."
else:
  print "Failed to log out..."