Move TTS cache curation to TextToSpeechCache

mycroft/tts/cache.py

@@ -38,7 +38,7 @@
 import requests
 
 from mycroft.util.file_utils import (
-    ensure_directory_exists, get_cache_directory
+    ensure_directory_exists, get_cache_directory, curate_cache
 )
 from mycroft.util.log import LOG
 
@@ -282,6 +282,10 @@ def clear(self):
             elif cache_file_path.is_file():
                 cache_file_path.unlink()
 
+    def curate(self):
+        """Remove cache data if disk space is running low."""
+        curate_cache(self.temporary_cache_dir, min_free_percent=100)
+
     def define_audio_file(self, sentence_hash: str) -> AudioFile:
         """Build an instance of an object representing an audio file."""
         audio_file = AudioFile(

mycroft/tts/tts.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 #
 from copy import deepcopy
-import hashlib
 import os
 import random
 import re
@@ -225,10 +224,8 @@ def end_audio(self, listen=False):
         self.bus.emit(Message("recognizer_loop:audio_output_end"))
         if listen:
             self.bus.emit(Message('mycroft.mic.listen'))
-        # Clean the cache as needed
-        cache_dir = mycroft.util.get_cache_directory("tts/" + self.tts_name)
-        mycroft.util.curate_cache(cache_dir, min_free_percent=100)
 
+        self.cache.curate()
         # This check will clear the "signal"
         check_for_signal("isSpeaking")
 

test/unittests/tts/test_cache.py

@@ -94,3 +94,14 @@ def test_clear_cache(self):
         tts_cache.clear()
         cache_contents = [path for path in self.cache_dir.iterdir()]
         self.assertListEqual([], cache_contents)
+
+    @patch('mycroft.tts.cache.curate_cache')
+    def test_curate_cache(self, curate_mock):
+        tts_cache = TextToSpeechCache(
+            tts_config=dict(preloaded_cache=self.cache_dir),
+            tts_name="Test",
+            audio_file_type="wav"
+        )
+        tts_cache.curate()
+        curate_mock.assert_called_with(tts_cache.temporary_cache_dir,
+                                       min_free_percent=100)