Add repo cloning script

Python 3 script for cloning Git repos housing edX services. These repos are mounted as data volumes into their corresponding Docker containers to facilitate development. Repo clone URLs can be found in settings.yml. Repos are cloned to the directory above the one housing this file.

ECOM-6562

clone.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+"""
+Python 3 script for cloning Git repos housing edX services.
+
+These repos are mounted as data volumes into their corresponding Docker
+containers to facilitate development.
+
+Repo clone URLs can be found in settings.yml. Repos are cloned to the directory
+above the one housing this file.
+"""
+import concurrent.futures
+import logging
+from logging.config import dictConfig
+from os.path import join, abspath, dirname
+import re
+import subprocess
+
+import yaml
+
+
+# Configure logging.
+dictConfig({
+    'version': 1,
+    'disable_existing_loggers': False,
+    'formatters': {
+        'standard': {
+            'format': '%(asctime)s %(levelname)s %(process)d [%(filename)s:%(lineno)d] - %(message)s',
+        },
+    },
+    'handlers': {
+        'console': {
+            'level': 'INFO',
+            'class': 'logging.StreamHandler',
+            'formatter': 'standard',
+        },
+    },
+    'loggers': {
+        '': {
+            'handlers': ['console'],
+            'level': 'DEBUG',
+            'propagate': False
+        },
+    },
+})
+logger = logging.getLogger(__name__)
+
+
+class Repo:
+    """Utility class representing a Git repo."""
+    def __init__(self, clone_url):
+        self.clone_url = clone_url
+        match = re.match(r'.*edx/(?P<name>.*).git', self.clone_url)
+        self.name = match.group('name')
+
+    def clone(self):
+        """Clone the repo."""
+        parent_path = dirname(dirname(abspath(__file__)))
+        clone_path = join(parent_path, self.name)
+        subprocess.run(['git', 'clone', self.clone_url, clone_path], check=True)
+
+
+if __name__ == '__main__':
+    with open('settings.yml') as f:
+        settings = yaml.load(f)
+
+    repos = [Repo(clone_url) for clone_url in settings['repos']]
+
+    logger.info(
+        'Cloning. Target repos are: {}.'.format(
+            ', '.join(repo.name for repo in repos)
+        )
+    )
+
+    with concurrent.futures.ThreadPoolExecutor() as executor:
+        for repo in repos:
+            executor.submit(repo.clone)
+
+    logger.info('Cloning complete.')

requirements.txt

@@ -0,0 +1 @@
+PyYAML==3.12

settings.yml

@@ -0,0 +1,5 @@
+repos:
+  - https://github.com/edx/course-discovery.git
+  - https://github.com/edx/credentials.git
+  - https://github.com/edx/ecommerce.git
+  - https://github.com/edx/programs.git