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CC-5709: Airtime Analyzer

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* Basic HTTP reporting back to the File API works (PUT)
* Use the database table names as JSON field names.
* Fixed result returning bug in message_listener.py
* Fixed API key verification to adhere with the HTTP Basic Auth spec
This commit is contained in:
Albert Santoni 2014-03-06 16:55:20 -05:00
parent 59535850e2
commit 4e39fce701
4 changed files with 45 additions and 20 deletions
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2
python_apps/airtime_analyzer/airtime_analyzer/message_listener.py
View file

@ -136,3 +136,5 @@ class MessageListener:
else:
raise Exception("Analyzer process terminated unexpectedly.")
return results

39
python_apps/airtime_analyzer/airtime_analyzer/metadata_analyzer.py
View file

@ -19,18 +19,34 @@ class MetadataAnalyzer(Analyzer):
info = audio_file.info
metadata["sample_rate"] = info.sample_rate
metadata["length_seconds"] = info.length
metadata["bitrate"] = info.bitrate
metadata["bit_rate"] = info.bitrate
#metadata["channels"] = info.channels
#Use the python-magic module to get the MIME type.
mime_magic = magic.Magic(mime=True)
metadata["mime_type"] = mime_magic.from_file(filename)
#Try to get the number of channels if mutagen can...
try:
#Special handling for getting the # of channels from MP3s. It's in the "mode" field
#which is 0=Stereo, 1=Joint Stereo, 2=Dual Channel, 3=Mono. Part of the ID3 spec...
if metadata["mime_type"] == "audio/mpeg":
if info.mode == 3:
metadata["channels"] = 1
else:
metadata["channels"] = 2
else:
metadata["channels"] = info.channels
except (AttributeError, KeyError):
#If mutagen can't figure out the number of channels, we'll just leave it out...
pass
#We normalize the mutagen tags slightly here, so in case mutagen changes,
#we find the
mutagen_to_analyzer_mapping = {
'title': 'title',
'artist': 'artist',
'album': 'album',
mutagen_to_airtime_mapping = {
'title': 'track_title',
'artist': 'artist_name',
'album': 'album_title',
'bpm': 'bpm',
'composer': 'composer',
'conductor': 'conductor',
@ -43,20 +59,21 @@ class MetadataAnalyzer(Analyzer):
'last_modified':'last_modified',
'mood': 'mood',
'replay_gain': 'replaygain',
'track_number': 'tracknumber',
'track_total': 'tracktotal',
'track_number': 'track_number',
'track_total': 'track_total',
'website': 'website',
'year': 'year',
'mime_type': 'mime',
}
for mutagen_tag, analyzer_tag in mutagen_to_analyzer_mapping.iteritems():
for mutagen_tag, airtime_tag in mutagen_to_airtime_mapping.iteritems():
try:
metadata[analyzer_tag] = audio_file[mutagen_tag]
metadata[airtime_tag] = audio_file[mutagen_tag]
# Some tags are returned as lists because there could be multiple values.
# This is unusual so we're going to always just take the first item in the list.
if isinstance(metadata[analyzer_tag], list):
metadata[analyzer_tag] = metadata[analyzer_tag][0]
if isinstance(metadata[airtime_tag], list):
metadata[airtime_tag] = metadata[airtime_tag][0]
except KeyError:
pass

5
python_apps/airtime_analyzer/airtime_analyzer/status_reporter.py
View file

@ -12,8 +12,9 @@ class StatusReporter():
def report_success_to_callback_url(self, callback_url, api_key, audio_metadata):
# Encode the audio metadata as JSON and post it back to the callback_url
post_payload = json.dumps(audio_metadata)
r = requests.put(callback_url, data=post_payload,
put_payload = json.dumps(audio_metadata)
logging.debug("Sending HTTP PUT with payload: " + put_payload)
r = requests.put(callback_url, data=put_payload,
auth=requests.auth.HTTPBasicAuth(api_key, ''),
timeout=StatusReporter._HTTP_REQUEST_TIMEOUT)
logging.debug("HTTP request returned status: " + str(r.status_code))