Handle missing files without errors

dashboard/handler.py

@@ -19,6 +19,28 @@ PLANNING_URL = 'https://amicale-insat.fr/event/json/list'
 DASHBOARD_FILE = 'dashboard_data.json'
 
 
+def get_news_feed():
+    """
+    Get facebook news and truncate the data to 15 entries for faster loading
+
+    :return: an object containing the facebook feed data
+    """
+    # Prevent concurrent access to file
+    while os.path.isfile(FACEBOOK_LOCK):
+        print("Waiting for Facebook lock")
+    try:
+        with open(FACEBOOK_FILE) as f:
+            data = json.load(f)
+            if 'data' in data and len(data['data']) > 15:
+                del data['data'][14:]
+            else:
+                data = {'data': []}
+            return data
+    except FileNotFoundError:
+        print("Could not find " + FACEBOOK_FILE)
+        return {'data': []}
+
+
 def get_available_machines():
     """
     Get the number of available washing/drying machines
@@ -28,6 +50,7 @@ def get_available_machines():
     # Prevent concurrent access to file
     while os.path.isfile(WASHINSA_LOCK):
         print("Waiting for washinsa lock")
+    try:
         with open(WASHINSA_FILE) as f:
             data = json.load(f)
             available_dryers = 0
@@ -38,6 +61,9 @@ def get_available_machines():
             for machine in data['washers']:
                 if machine['state'] == 'DISPONIBLE':
                     available_washers += 1
+    except FileNotFoundError:
+        print("Could not find " + WASHINSA_FILE)
+        return 0, 0
     return available_dryers, available_washers
 
 
@@ -50,6 +76,7 @@ def get_today_menu():
     # Prevent concurrent access to file
     while os.path.isfile(MENU_LOCK):
         print("Waiting for menu lock")
+    try:
         with open(MENU_FILE) as f:
             data = json.load(f)
             menu = []
@@ -58,6 +85,9 @@ def get_today_menu():
                     menu = data[i]['meal'][0]['foodcategory']
                     break
             return menu
+    except FileNotFoundError:
+        print("Could not find " + MENU_FILE)
+        return []
 
 
 def get_proximo_article_number():
@@ -66,6 +96,7 @@ def get_proximo_article_number():
 
     :return: an integer representing the number of articles
     """
+    try:
         with urllib.request.urlopen(PROXIMO_URL) as response:
             data = json.loads(response.read().decode())
             count = 0
@@ -73,6 +104,9 @@ def get_proximo_article_number():
                 if int(article['quantity']) > 0:
                     count += 1
             return count
+    except:
+        print("Error processing following url: " + PROXIMO_URL)
+        return 0
 
 
 def get_tutorinsa_tutoring_number():
@@ -86,6 +120,7 @@ def get_tutorinsa_tutoring_number():
             data = json.loads(response.read().decode())
             return int(data['tutorials_number'])
     except:
+        print("Error processing following url: " + TUTORINSA_URL)
         return 0
 
 
@@ -104,27 +139,9 @@ def get_today_events():
                     today_events.append(event)
             return today_events
     except:
+        print("Error processing following url: " + PLANNING_URL)
         return []
 
-
-def get_news_feed():
-    """
-    Get facebook news and truncate the data to 15 entries for faster loading
-
-    :return: an object containing the facebook feed data
-    """
-    # Prevent concurrent access to file
-    while os.path.isfile(FACEBOOK_LOCK):
-        print("Waiting for Facebook lock")
-    with open(FACEBOOK_FILE) as f:
-        data = json.load(f)
-        if 'data' in data and len(data['data']) > 15:
-            del data['data'][14:]
-        else:
-            data = {'data': []}
-        return data
-
-
 def generate_dashboard_json():
     """
     Generate the actual dashboard