moved pre-commit from main repo

dev/pre-commit

@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+
+# Copyright European Organization for Nuclear Research (CERN)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# You may not use this file except in compliance with the License.
+# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+#
+# Authors:
+# - Vincent Garonne, <vincent.garonne@cern.ch>, 2012
+# - Martin Barisits, <martin.barisits@cern.ch>, 2015-2018
+
+from __future__ import with_statement
+import os
+import re
+import subprocess
+import sys
+import tempfile
+import docker
+
+
+def system(*args, **kwargs):
+    kwargs.setdefault('stdout', subprocess.PIPE)
+    proc = subprocess.Popen(args, **kwargs)
+    out, err = proc.communicate()
+    return out
+
+def container(*args, **kwargs):
+    client = docker.from_env()
+    return client.containers.run(*args, **kwargs)
+
+
+def main():
+    currentbranch = system('git', 'rev-parse', '--abbrev-ref=strict', 'HEAD').rstrip('\n')
+    if currentbranch == 'master' or currentbranch == 'next' or currentbranch == 'hotfix':
+        print "You are trying to commit on your master/next/hotfix, that's probably a mistake. Exiting..."
+        sys.exit(1)
+    modified = re.compile('^[AM]+\s+(?P<name>.*\.py)', re.MULTILINE)
+    files = system('git', 'status', '--porcelain')
+    files = modified.findall(files)
+    tempdir = tempfile.mkdtemp()
+    for name in files:
+        filename = os.path.join(tempdir, name)
+        filepath = os.path.dirname(filename)
+        if not os.path.exists(filepath):
+            os.makedirs(filepath)
+        with file(filename, 'w') as f:
+            system('git', 'show', ':' + name, stdout=f)
+
+    # Run flake8 on stages files
+    f = open(tempdir + '/.flake8', 'w+')
+    f.write('''[pycodestyle]
+max-line-length=256
+ignore=E722
+
+[flake8]
+max-line-length=256
+ignore=E722
+''')
+    f.close()
+    output = system('flake8', '.', cwd=tempdir)
+    if output:
+        print output,
+        sys.exit(1)
+
+    # Run pylint on stages files inside a rucio-dev container
+    tools_path = '{cwd}/tools'.format(cwd = os.getcwd())
+    bin_path = '{cwd}/bin'.format(cwd = os.getcwd())
+    lib_path = '{cwd}/lib'.format(cwd = os.getcwd())
+    for path, subdirs, files in os.walk(tempdir):
+        for filename in files:
+            if filename.endswith('.py'):
+                filepath = '{p}/{f}'.format(p=path, f=filename)
+                output = container('rucio/rucio-dev', command=['pylint', '-E', '{f}'.format(f=filename)],
+                                   remove = True,
+                                   volumes = {tools_path: {'bind': '/opt/rucio/tools', 'mode': 'ro'},
+                                              bin_path: {'bind': '/opt/rucio/bin', 'mode': 'ro'},
+                                              lib_path: {'bind': '/opt/rucio/lib', 'mode': 'ro'},
+                                              lib_path: {'bind': '/opt/rucio/lib', 'mode': 'ro'},
+                                              filepath: {'bind': '/opt/rucio/{f}'.format(f=filename), 'mode': 'ro'}})
+                if output:
+                    print output,
+                    sys.exit(1)
+
+
+if __name__ == '__main__':
+    main()