def __init__(self):
AgentThreadedBase.__init__(self)
self.ss=SimpleStore(size=self.CACHE_ENTRIES, destructive=False)
class CacheTrackAgent(AgentThreadedBase):
CACHE_ENTRIES=256
def __init__(self):
AgentThreadedBase.__init__(self)
self.ss=SimpleStore(size=self.CACHE_ENTRIES, destructive=False)
def hq_track(self, track, key=None, priority="high"):
"""
Keep the 'track' in cache
When an "mb_track" comes back in, pull the original 'track':
the said 'track' object contains the original contextual information
"""
ukey=self.ss.store(track, key)
self.pub("ctrack", ukey, track, priority)
def h_track(self, track, cache=True, key=None, priority="high"):
"""
Keep the 'track' in cache
When an "mb_track" comes back in, pull the original 'track':
the said 'track' object contains the original contextual information
"""
if track is None:
print "track is None"
return
if cache:
ukey=self.ss.store(track, key)
self.pub("ctrack", ukey, track, priority)
else:
self.pub("ctrack", key, track, priority)
def h_mb_track(self, source, ukey, mb_track):
"""
Pull the original 'track' from the cache
based on the artist:track key
We might be received multiple 'mb_track' messages based on 1
original "track" message: it is due to the "lookup" process
performed in the 'musicbrainz-proxy-dbus' where all [artist:track]
matching the same 'track_mbid' will be returned. This helps finding
an entry in the RB database.
"""
## some agents might used the services of other agents without
## needing caching here.
if ukey is None:
return
try: otrack=self.ss.retrieve(ukey)
except:
#print "!! Unable to retrieve from cache: key(%s)" % ukey
return
if otrack is None:
print "otrack is None"
return
ptrack=copy.deepcopy(mb_track)
## need to keep the variants of [artist;track] coming from MB proxy!
ptrack.mergeSpecial(otrack)
#print ptrack.details
self.pub("ptrack", source, ukey, ptrack)
