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#!/usr/bin/env python
#
# python yaml validator for a git commit
#
'''
python yaml validator for a git commit
'''
import shutil
import sys
import os
import tempfile
import subprocess
import yaml
def get_changes(oldrev, newrev, tempdir):
'''Get a list of git changes from oldrev to newrev'''
proc = subprocess.Popen(['/usr/bin/git', 'diff', '--name-only', oldrev,
newrev, '--diff-filter=ACM'], stdout=subprocess.PIPE)
stdout, _ = proc.communicate()
files = stdout.split('\n')
# No file changes
if not files:
return []
cmd = '/usr/bin/git archive %s %s | /bin/tar x -C %s' % (newrev, " ".join(files), tempdir)
proc = subprocess.Popen(cmd, shell=True)
_, _ = proc.communicate()
rfiles = []
for dirpath, _, fnames in os.walk(tempdir):
for fname in fnames:
rfiles.append(os.path.join(dirpath, fname))
return rfiles
def main():
'''
Perform yaml validation
'''
results = []
try:
tmpdir = tempfile.mkdtemp(prefix='jenkins-git-')
old, new, _ = sys.argv[1:]
for file_mod in get_changes(old, new, tmpdir):
print "+++++++ Received: %s" % file_mod
# if the file extensions is not yml or yaml, move along.
if not file_mod.endswith('.yml') and not file_mod.endswith('.yaml'):
continue
# We use symlinks in our repositories, ignore them.
if os.path.islink(file_mod):
continue
try:
yaml.load(open(file_mod))
results.append(True)
except yaml.scanner.ScannerError as yerr:
print yerr
results.append(False)
finally:
shutil.rmtree(tmpdir)
if not all(results):
sys.exit(1)
if __name__ == "__main__":
main()
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