web: Log warning and return None on errors

ols/backend/web/webquery.py

@@ -1,34 +1,37 @@
 import aiohttp
 import asyncio
 import gpxpy
+import logging
 import os.path
 import sys
 import yaml
 
 from datetime import datetime
 
+log = logging.getLogger(__name__)
+
 
 class Locator(object):
 
-    def __init__(self, url, apikey=None):
-        self.api = url + ('?key=' + apikey) if apikey is not None else ''
+    def __init__(self, locateurl, apikey=None):
+        self.api = locateurl + ('?key=' + apikey) if apikey is not None else ''
 
     async def locate(self, observation, **kwargs):
         jd = observation.copy()
         jd.pop('time', None)
 
         async with aiohttp.ClientSession() as session:
-            async with session.post(self.api, json=jd) as response:
+            try:
+                async with session.post(self.api, json=jd) as response:
+                    if (response.status != 200
+                            or response.headers['content-type'] !=
+                            'application/json'):
+                        raise ValueError("Did not get JSON")
 
-                # print("Status:", response.status)
-                # print("Content-type:", response.headers['content-type'])
-                if (response.status != 200
-                        or response.headers['content-type'] !=
-                        'application/json'):
-                    raise ValueError("Did not get JSON")  # FIXME: Other exc
-
-                outd = await response.json()
-                print("Body:", str(outd))
+                    outd = await response.json()
+            except Exception as e:
+                log.warning("Failed get location: " + str(e))
+                return None, None
 
         loc = outd.get('location', {})
         latlon = loc.get('lat'), loc.get('lng')