Add last_updated to instrument status API

metobsapi/server.py

 import os
 import json as builtin_json
 import logging
+from datetime import datetime
 from urllib.request import urlopen, URLError
 
 from flask import Flask, render_template, request, jsonify
@@ -135,7 +136,6 @@ def _status_render(response, fmt):
 def get_instrument_status(site, inst=None, fmt=None):
     """See `/api/status/` for more information."""
     # defaults:
-    print(site, inst, fmt)
     response = {
         "name": site if inst is None else inst,
         "short_name": "",
@@ -143,6 +143,7 @@ def get_instrument_status(site, inst=None, fmt=None):
         "status_code": 255,
         "status_message": "",
     }
+    mod_time = datetime.utcnow()
 
     if fmt is None:
         fmt = "html"
@@ -171,6 +172,7 @@ def get_instrument_status(site, inst=None, fmt=None):
         json_path = os.path.join(base_path, json_subpath)
         try:
             json_str = open(json_path, 'r').read()
+            mod_time = datetime.fromtimestamp(os.path.getmtime(json_path))
         except FileNotFoundError:
             response['status_message'] = "No status information found."
             json_str = None
@@ -180,6 +182,7 @@ def get_instrument_status(site, inst=None, fmt=None):
         return _status_render(response, fmt)
 
     json_dict = builtin_json.loads(json_str)
+    response['last_updated'] = mod_time.strftime("%Y-%m-%d %H:%M:%SZ")
     response.update(json_dict)
     return _status_render(response, fmt)
 

metobsapi/templates/status_index.html

@@ -133,6 +133,7 @@
                         <li>long_name: Long human-friendly name. For instruments this may include site name.</li>
                         <li>status_code: Integer code for current instrument status (see below)</li>
                         <li>status_message: Description and reason for current status</li>
+                        <li>last_updated: YYYY-MM-DD HH:MM:SSZ</li>
                     </ul>
                     </p>
                 </div>