Add calparrot.stop

calparrot/stop.py

+import argparse
+import logging
+import sys
+
+from tornado.httpclient import HTTPClient
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument('port', type=int, help="Port number of CalParrot server")
+    args = ap.parse_args()
+    logging.basicConfig(level=logging.INFO)
+
+    client = HTTPClient()
+    client.fetch(f"http://127.0.0.1:{args.port}/.calparrot/stop", method='POST',
+                 allow_nonstandard_methods=True)  # POST with no body
+    logging.info("Asked CalParrot server to shut down")
+
+
+if __name__ == '__main__':
+    sys.exit(main())