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Following Chromium Progress

June 4th, 2009 · No Comments

For the past few months I have been following the progress of Chromium for Mac and watching it develop and it has definitely made a lot of progress in that time. In the past few month it has received increasing press, with people asking why it is taking so long. One of the lead developers on the project responded that people need to chill out and that building a browser takes time.  So, in part to show myself and others the progress, I decided to make a little application to show this progress.  Throughout the day builds and updates of Chromium are posted to http://build.chromium.org/buildbot/snapshots/sub-rel-mac/ but to read each changelog was a pain. So, to give myself more exposure to new Python libraries and give the Twitter API a swing, I created a script to check for changes to the builds, pull log entries on the changes and post them all to a Twitter stream so there is a single source you can view updates. The script is far from perfect, as it has to be running to catch the updates and doesn’t go back and look for ones it missed. And currently I just have it running on one of Duke’s servers so it goes down occasionally. But it generally works and provides plenty of updates so you can see what is actually be worked on and updated. Check out the source code below (twitter username and password cut out).

?Download chromium.py
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#!/usr/bin/env python
# encoding: utf-8
 
import sys
import os
import urllib
import urllib2
import base64
import time
from xml.dom import minidom
 
def twitter(twitter_username, twitter_password, message):
	request = urllib2.Request('http://twitter.com/statuses/update.json')
	request.headers['Authorization'] = 'Basic %s' % ( base64.b64encode(twitter_username + ':' + twitter_password),)
	request.data = urllib.urlencode({'status': message})
	try:
		response = urllib2.urlopen(request) # The Response
	except HTTPError, e:
		print "Error posting to twitter"
		print "HTTP Error code: ", e.code
	except URLError, e:
		print "Error posting to twitter"
		print "URLError reason: ", e.reason
 
def main():
	message = ""
	last_update = "17514";
	chromium_url = "http://build.chromium.org/buildbot/snapshots/sub-rel-mac/"
	while(True):
		try:
			response = urllib2.urlopen(chromium_url + "LATEST")
		except HTTPError, e:
			print "HTTP Error code: ", e.code
		except URLError, e:
			print "URLError reason: ", e.reason
		else:
			latest = response.read()
			print "latest: ", latest
			if(latest != last_update):
				try:
					response2 = urllib2.urlopen(chromium_url + latest + "/changelog.xml")
				except HTTPError, e:
					print "HTTP Error code: ", e.code
				except URLError, e:
					print "URLError reason: ", e.reason
				else:
					html = response2.read()
					# print html
					dom = minidom.parseString(html)
					entries = dom.getElementsByTagName("logentry") #[0].childNodes
					print "entries: ", len(entries)
					for i in range(0, len(entries)):
						link = chromium_url + latest + "/ "
						msg = entries[i].getElementsByTagName("msg")[0].firstChild.nodeValue
						num = entries[i].getAttribute("revision")
						print "Revision: ", num
						twitter("USERNAME", "PASSWORD", "Chromium Revision " + num + ": " + msg)
					last_update = latest
			time.sleep((60*2))
 
 
if __name__ == '__main__':
	main()

Play with the code or follow the twitter. Also, I decided to try a new WordPress plugin for code so let me know what you think. Thanks.

Tags: Chromium · Programming · Python · Twitter

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