contrib/svn_watcher.py

   1 #!/usr/bin/python
   2
   3 # This is a program which will poll a (remote) SVN repository, looking for
   4 # new revisions. It then uses the 'buildbot sendchange' command to deliver
   5 # information about the Change to a (remote) buildmaster. It can be run from
   6 # a cron job on a periodic basis, or can be told (with the 'watch' option) to
   7 # automatically repeat its check every 10 minutes.
   8
   9 # This script does not store any state information, so to avoid spurious
  10 # changes you must use the 'watch' option and let it run forever.
  11
  12 # You will need to provide it with the location of the buildmaster's
  13 # PBChangeSource port (in the form hostname:portnum), and the svnurl of the
  14 # repository to watch.
  15
  16
  17 # 15.03.06 by John Pye
  18 # 29.03.06 by Niklaus Giger, added support to run under windows, added invocation option
  19 import subprocess
  20 import xml.dom.minidom
  21 import sys
  22 import time
  23 import os
  24 if sys.platform == 'win32':
  25     import win32pipe
  26
  27 def getoutput(cmd):
  28     p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
  29     return p.stdout.read()
  30
  31 def checkChanges(repo, master, verbose=False, oldRevision=-1):
  32     cmd = ["svn", "log", "--non-interactive", "--xml", "--verbose",
  33            "--limit=1", repo]
  34     if verbose == True:
  35         print "Getting last revision of repository: " + repo
  36
  37     if sys.platform == 'win32':
  38         f = win32pipe.popen(cmd)
  39         xml1 = ''.join(f.readlines())
  40         f.close()
  41     else:
  42         xml1 = getoutput(cmd)
  43
  44     if verbose == True:
  45         print "XML\n-----------\n"+xml1+"\n\n"
  46
  47     doc = xml.dom.minidom.parseString(xml1)
  48     el = doc.getElementsByTagName("logentry")[0]
  49     revision = el.getAttribute("revision")
  50     author = "".join([t.data for t in
  51     el.getElementsByTagName("author")[0].childNodes])
  52     comments = "".join([t.data for t in
  53     el.getElementsByTagName("msg")[0].childNodes])
  54
  55     pathlist = el.getElementsByTagName("paths")[0]
  56     paths = []
  57     for p in pathlist.getElementsByTagName("path"):
  58             paths.append("".join([t.data for t in p.childNodes]))
  59
  60     if verbose == True:
  61         print "PATHS"
  62         print paths
  63
  64     if  revision != oldRevision:
  65         cmd = ["buildbot", "sendchange", "--master=%s"%master,
  66                "--revision=%s"%revision, "--username=%s"%author,
  67                "--comments=%s"%comments]
  68         cmd += paths
  69
  70         if verbose == True:
  71             print cmd
  72
  73         if sys.platform == 'win32':
  74             f = win32pipe.popen(cmd)
  75             print time.strftime("%H.%M.%S ") + "Revision "+revision+ ": "+ ''.join(f.readlines())
  76             f.close()
  77         else:
  78             xml1 = getoutput(cmd)
  79     else:
  80         print time.strftime("%H.%M.%S ") + "nothing has changed since revision "+revision
  81
  82     return revision
  83
  84 if __name__ == '__main__':
  85     if len(sys.argv) == 4 and sys.argv[3] == 'watch':
  86         oldRevision = -1
  87         print "Watching for changes in repo "+  sys.argv[1] + " master " +  sys.argv[2]
  88         while 1:
  89             oldRevision = checkChanges(sys.argv[1],  sys.argv[2], False, oldRevision)
  90             time.sleep(10*60) # Check the repository every 10 minutes
  91
  92     elif len(sys.argv) == 3:
  93         checkChanges(sys.argv[1],  sys.argv[2], True )
  94     else:
  95         print os.path.basename(sys.argv[0]) + ":  http://host/path/to/repo master:port [watch]"
  96