[qa] Add pre-push hook openwisp#161

Closes openwisp#161

pre_push_hook.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+
+import argparse
+import collections
+import os
+import pprint
+import shutil
+import subprocess
+import sys
+
+
+def run_checks():
+    checks = [
+    'run-qa-checks',
+    'runtests.py'
+]
+    MAIN_DIR = os.getcwd()
+    failed_checks = []
+    for check in checks:
+        task = subprocess.Popen(
+            f'{MAIN_DIR}/{check}'
+        )
+        task.communicate()
+        if task.returncode:
+            failed_checks.append(check)
+    if len(failed_checks):
+        print("The following checks failed")
+        print("---------------------------")
+        for check in failed_checks:
+            print(check)
+        sys.exit(1)
+
+
+def make_executable(f):
+    task = subprocess.Popen(
+        ['chmod', '+x', f], stdout=subprocess.PIPE, stderr=subprocess.PIPE
+    )
+    res, err = task.communicate()
+    return res, err
+
+
+def install_hook():
+    MAIN_DIR = os.getcwd()
+    HOOKS_DIR = os.path.join(MAIN_DIR, '.git', 'hooks')
+    hook_file = os.path.join(HOOKS_DIR, 'pre-push')
+    symlink = os.path.islink(hook_file)
+    if symlink and os.path.exists(hook_file):
+        print('Symlink already exists')
+    else:
+        if symlink:
+            os.unlink(hook_file)
+        os.symlink(os.path.abspath(__file__), hook_file)
+        print('Symlink created')
+
+    # Makes the hook file executable
+    res, err = make_executable(hook_file)
+    if err:
+        raise ValueError(err)
+
+
+def main(args=None):
+    parser = argparse.ArgumentParser()
+    parser.add_argument('remote', nargs='?', help='provided by git before push')
+    parser.add_argument('url', nargs='?', help='provided by git before push')
+    parser.add_argument(
+        '--install',
+        action='store_true',
+        default=False,
+    )
+    args = parser.parse_args(args=args)
+    if args.install:
+        install_hook()
+        return
+    run_checks()
+
+
+if __name__ == '__main__':
+    main()

setup.py

@@ -2,6 +2,7 @@
 import os
 import sys
 
+import pre_push_hook
 from openwisp_utils import get_version
 from setuptools import find_packages, setup
 
@@ -68,3 +69,5 @@
         'Programming Language :: Python :: 3',
     ],
 )
+
+pre_push_hook.main(args=['--install'])