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Multiple keys with Google speech api #514

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Multiple keys with Google speech api #514

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e32728b
Added supporting multiple GOOGLE_SPEECH keys
dmbuchta May 12, 2016
1cf08d7
Reduced line length
dmbuchta May 17, 2016
480a520
Removed accidental file
dmbuchta May 17, 2016
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22 changes: 20 additions & 2 deletions client/stt.py
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -313,6 +313,14 @@ def __init__(self, api_key=None, language='en-us'):
self._api_key = None
self._http = requests.Session()
self.language = language

if isinstance(api_key, list):
self.key_index = 0
self.request_count = 0
self.api_quota = 50
else:
self.key_index = False

self.api_key = api_key

@property
Expand All @@ -339,9 +347,13 @@ def api_key(self, value):

def _regenerate_request_url(self):
if self.api_key and self.language:
if self.key_index is not False:
key = self.api_key[self.key_index]
else:
key = self.api_key
query = urllib.urlencode({'output': 'json',
'client': 'chromium',
'key': self.api_key,
'key': key,
'lang': self.language,
'maxresults': 6,
'pfilter': 2})
Expand Down Expand Up @@ -382,14 +394,20 @@ def transcribe(self, fp):
self._logger.critical('Language info missing, transcription ' +
'request aborted.')
return []

elif self.key_index is not False \
and self.request_count >= self.api_quota:
print('Switching api keys to stay under quota')
self.key_index = ((self.key_index + 1) % len(self.api_key))
self.request_count = 0
self._regenerate_request_url()
wav = wave.open(fp, 'rb')
frame_rate = wav.getframerate()
wav.close()
data = fp.read()

headers = {'content-type': 'audio/l16; rate=%s' % frame_rate}
r = self._http.post(self.request_url, data=data, headers=headers)
self.request_count += 1
try:
r.raise_for_status()
except requests.exceptions.HTTPError:
Expand Down