sub_api: handle failure of sensor/server more gracefully

1 files changed, 13 insertions, 10 deletions

diff --git a/scripts/sub_api.py b/scripts/sub_api.py
index 307ff7f..8d1eb32 100644
--- a/scripts/sub_api.py
+++ b/scripts/sub_api.py
@@ -2,26 +2,29 @@
 
 import json
 import urllib
+import time
+import sys
 
 import os.path
 
 base_path = os.path.realpath(os.path.dirname(__file__))
 base_path = os.path.join(base_path, '..')
-
-#declarations
-
-input_url = "http://taifun.local.sublab.org/subcan.json"
 json_template = os.path.join(base_path, "template", "template.spaceapi.json")
+input_url = "http://taifun.local.sublab.org/subcan.json"
 output_file = os.path.join(base_path, "public", "status.json")
 status_dict = { "open" : True , "closed" : False }
 
-#read door status
-status_json = json.load(urllib.urlopen(input_url))
-door_status = status_json["door.lock"]["text"]
-
-#fill status in template
 sublab_status = json.load(open(json_template))
-sublab_status["open"] = status_dict[door_status]
+# What to set on unknown status
+sublab_status["open"] = False
+
+try:
+    status_json = json.load(urllib.urlopen(input_url))
+    if time.time() <= status_json["door.lock"]["ts"] + 120:
+        door_status = status_json["door.lock"]["text"]
+        sublab_status["open"] = status_dict[door_status]
+except Exception:
+    sys.excepthook(*sys.exc_info())
 
 #atomically place new status
 new_output_file = output_file + '.new'