gistfile1.py

#!/usr/bin/env python
import sys
import fnmatch
import logging
import subprocess

def Logger():
  return logging.getLogger("post-recieve-hook")
  

class GitPostRevieveHookHelper(object):
  def __init__(self):
    self._dCallbacks = {}

  def runCommand(self, psCommand):
    lsCommand = psCommand
    if isinstance(psCommand, list):
      lsCommand = ' '.join(psCommand)
    loCommand = subprocess.Popen(lsCommand, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    ltOut = loCommand.communicate()
    if loCommand.returncode != 0:
      Logger().error("Command %s failed: %s, %s, %d" % (psCommand, ltOut[0], ltOut[1], loCommand.returncode)) 
    else:
      Logger().debug("Run %s with the following result %s, %s , %d" % (psCommand,
                                                                       ltOut[0],
                                                                       ltOut[1],
                                                                       loCommand.returncode))
      return dict(stdout=ltOut[0],
                  stderr=ltOut[1],
                  code=loCommand.returncode)

  def getChangedFiles(self, psOldRev, psNewRev):
    ldOut = self.runCommand("git diff --name-only %s %s" % (psOldRev, psNewRev))
    if ldOut.get('code') == 0:
      return ldOut.get('stdout').splitlines()
    
    Logger().error("Command git diff failed.")

  def registerCallBack(self, psFileGlob, pcCallback):
    self._dCallbacks[psFileGlob] = pcCallback
  
  def _isMatchCallback(self, psGlob, psName):
    return fnmatch.fnmatch(psName, psGlob)
    
  def _runFile(self, psFilename, psOldRev, psNewRev):
    for lsGlob, lcCallback in self._dCallbacks.items():
      if self._isMatchCallback(lsGlob, psFilename):
        lcCallback(psFilename, psOldRev, psNewRev)

  def run(self, psOldRev, psNewRev):
    for lsFile in self.getChangedFiles(psOldRev, psNewRev):
      self._runFile(lsFile, psOldRev, psNewRev)


def printFile(psFile, psOldRev, psNewRev):
  print psFile, psOldRev, psNewRev

if __name__ == "__main__":
  lsParams = sys.stdin.readline()
  (lsOldRev, lsNewRev, lsRefName) = lsParams.split(' ')
  loHook = GitPostRevieveHookHelper()
  loHook.registerCallBack("config/*", printFile)
  loHook.run(lsOldRev, lsNewRev)