1 files changed, 67 insertions, 0 deletions
diff --git a/git/yaml_validation.py b/git/yaml_validation.py
new file mode 100755
index 000000000..aa909b584
--- /dev/null
+++ b/git/yaml_validation.py
@@ -0,0 +1,67 @@
+#!/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 not file_mod.endswith('.yml') or not file_mod.endswith('.yaml'):
+                continue
+
+            try:
+                yaml.load(file_mod)
+                results.append(True)
+
+            except yaml.scanner.ScannerError as yerr:
+                print yerr.message
+                results.append(False)
+    finally:
+        shutil.rmtree(tmpdir)
+
+    if not all(results):
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()