Ensure all json loads calls use strings

python_apps/airtime_analyzer/airtime_analyzer/cuepoint_analyzer.py

@@ -27,6 +27,10 @@ class CuePointAnalyzer(Analyzer):
         command = [CuePointAnalyzer.SILAN_EXECUTABLE, '-b', '-F', '0.99', '-f', 'JSON', '-t', '1.0', filename]
         try:
             results_json = subprocess.check_output(command, stderr=subprocess.STDOUT, close_fds=True)
+            try:
+                results_json = results_json.decode()
+            except (UnicodeDecodeError, AttributeError):
+                pass
             silan_results = json.loads(results_json)
 
             # Defensive coding against Silan wildly miscalculating the cue in and out times:

python_apps/airtime_analyzer/airtime_analyzer/message_listener.py

@@ -157,6 +157,10 @@ class MessageListener:
             We avoid cascading failure this way.
         '''
         try:
+            try:
+                body = body.decode()
+            except (UnicodeDecodeError, AttributeError):
+                pass
             msg_dict = json.loads(body)
             api_key         = msg_dict["api_key"]
             callback_url    = msg_dict["callback_url"]