How to Synchronize Queues Via XML-RPC in Python

XML-RPC is a procedural communication protocol that uses XML files to encode communications made through the protocol. Like many Web communication protocols, XML-RPC uses hypertext transfer protocol (HTTP) to request and receive information remotely from other Web servers. The Web scripting language known as Python can be used to synchronize queues on remote Web servers by using XML-RPC to control the synchronization requests.

Instructions

1. Open your preferred Python code editing application and create a new Python document.

2. Request the jobs from the Web server through XML-RPC by importing the XML-RPC library. Use the following example of code as a guide to code your Python request:

   import xmlrpclib
   s = xmlrpclib.ServerProxy('http://www.exampleURL.com:3000')
   print s.myfunction(1, 3)

3. Call the XML-RPC request handler to initiate the job synchronization, for example:

   from XMLRPCServer import XMLRPCServer
   from XMLRPCServer import XMLRPCRequestHandler

   class RequestHandler(XMLRPCRequestHandler):
   rpc_paths = ('/RPC2',)

4. Synchronize the jobs on the server by calling the specific Python function you are using to perform the synchronization. Use the following code as a guide and replace "examplefunction" with the name of the Python function that you wish to use:

   def examplefunction(x, y):
   status = 1
   result = [1, 3, [2, 9]]
   return (status, result)
   server.register_function(examplefunction)

5. Save the Python code and execute the script from your remote machine to synchronize the jobs queue on your XML-RPC server.

References

• Trac Hacks: Trac XML-RPC Plugin
• Python: Parallel Processing and Multiprocessing in Python
• Tutorials Point: Python Multithreaded Programming
• O'Reilly: XML-RPC in Python