Make smart futures avoid polling.

[python_utils.git] / google_assistant.py

diff --git a/google_assistant.py b/google_assistant.py
index 71301e4779c2736a4a908df84b7ec7e67ba02b3f..572b4ccdf25644992f77f66eae800ea9e306ce50 100644 (file)
--- a/google_assistant.py
+++ b/google_assistant.py
@@ -2,6 +2,7 @@
 
 import logging
 from typing import NamedTuple
+import sys
 
 import requests
 import speech_recognition as sr  # type: ignore
@@ -45,10 +46,16 @@ audio_url: {self.audio_url}"""
 
 
 def tell_google(cmd: str, *, recognize_speech=True) -> GoogleResponse:
+    """Alias for ask_google."""
     return ask_google(cmd, recognize_speech=recognize_speech)
 
 
 def ask_google(cmd: str, *, recognize_speech=True) -> GoogleResponse:
+    """Send a command string to Google via the google_assistant_bridge as the
+    user google_assistant_username and return the response.  If recognize_speech
+    is True, perform speech recognition on the audio response from Google so as
+    to translate it into text (best effort, YMMV).
+    """
     logging.debug(f"Asking google: '{cmd}'")
     payload = {
         "command": cmd,
@@ -79,17 +86,28 @@ def ask_google(cmd: str, *, recognize_speech=True) -> GoogleResponse:
                     sample_rate=24000,
                     sample_width=2,
                 )
-                audio_transcription = recognizer.recognize_google(
-                    speech,
-                )
-                logger.debug(f"Transcription: '{audio_transcription}'")
+                try:
+                    audio_transcription = recognizer.recognize_google(
+                        speech,
+                    )
+                    logger.debug(f"Transcription: '{audio_transcription}'")
+                except sr.UnknownValueError as e:
+                    logger.exception(e)
+                    logger.warning('Unable to parse Google assistant\'s response.')
+                    audio_transcription = None
+        return GoogleResponse(
+            success=success,
+            response=response,
+            audio_url=audio,
+            audio_transcription=audio_transcription,
+        )
     else:
-        logger.error(
-            f'HTTP request to {url} with {payload} failed; code {r.status_code}'
+        message = f'HTTP request to {url} with {payload} failed; code {r.status_code}'
+        logger.error(message)
+        return GoogleResponse(
+            success=False,
+            response=message,
+            audio_url=audio,
+            audio_transcription=audio_transcription,
         )
-    return GoogleResponse(
-        success=success,
-        response=response,
-        audio_url=audio,
-        audio_transcription=audio_transcription,
-    )
+        sys.exit(-1)