def __init__(self):
allCategories = Constants.categories
self.__all_sources = []
self.__entity_collection = MongoEntityCollection()
self.__stats_collection = MongoEntityStatsCollection()
# Within each category, we have a number of sources and each is assigned a priority. The priority is used to
# determine how long to wait for results from that source.
self.__categories_to_sources_and_priorities = {}
for category in allCategories:
self.__categories_to_sources_and_priorities[category] = []
self.__registerSource(StampedSource(), music=3, film=3, book=3, app=3, place=3)
self.__registerSource(iTunesSource(), music=10, film=10, book=3, app=10)
# TODO: Enable film for Amazon. Amazon film results blend TV and movies and have better retrieval than
# iTunes. On the other hand, they're pretty dreadful -- no clear distinction between TV and movies, no
# clear distinction between individual movies and box sets, etc.
self.__registerSource(AmazonSource(), music=5, book=10)
self.__registerSource(FactualSource(), place=8)
self.__registerSource(GooglePlacesSource(), place=8)
self.__registerSource(RdioSource(), music=8)
self.__registerSource(SpotifySource(), music=8)
self.__registerSource(TMDBSource(), film=8)
self.__registerSource(TheTVDBSource(), film=8)
class EntitySearch(object):
def __registerSource(self, source, **categoriesToPriorities):
self.__all_sources.append(source)
for (category, priority) in categoriesToPriorities.items():
if category not in Constants.categories:
raise Exception("unrecognized category: %s" % category)
self.__categories_to_sources_and_priorities[category].append((source, priority))
def __init__(self):
allCategories = Constants.categories
self.__all_sources = []
self.__entity_collection = MongoEntityCollection()
self.__stats_collection = MongoEntityStatsCollection()
# Within each category, we have a number of sources and each is assigned a priority. The priority is used to
# determine how long to wait for results from that source.
self.__categories_to_sources_and_priorities = {}
for category in allCategories:
self.__categories_to_sources_and_priorities[category] = []
self.__registerSource(StampedSource(), music=3, film=3, book=3, app=3, place=3)
self.__registerSource(iTunesSource(), music=10, film=10, book=3, app=10)
# TODO: Enable film for Amazon. Amazon film results blend TV and movies and have better retrieval than
# iTunes. On the other hand, they're pretty dreadful -- no clear distinction between TV and movies, no
# clear distinction between individual movies and box sets, etc.
self.__registerSource(AmazonSource(), music=5, book=10)
self.__registerSource(FactualSource(), place=8)
self.__registerSource(GooglePlacesSource(), place=8)
self.__registerSource(RdioSource(), music=8)
self.__registerSource(SpotifySource(), music=8)
self.__registerSource(TMDBSource(), film=8)
self.__registerSource(TheTVDBSource(), film=8)
def __terminateWaiting(self, pool, start_time, category, resultsDict):
logTimingData('IN TERMINATE WAITING')
sources_to_priorities = dict(self.__categories_to_sources_and_priorities[category])
total_value_received = 0
total_potential_value_outstanding = sum(sources_to_priorities.values())
sources_seen = set()
while True:
try:
elapsed_seconds = total_seconds(datetime.datetime.now() - start_time)
if elapsed_seconds >= 7:
logs.warning('Search completely timed out at 7s!')
pool.kill()
return
for (source, results) in resultsDict.items():
if source in sources_seen:
continue
logTimingData('JUST NOW SEEING SOURCE: ' + source.sourceName)
sources_seen.add(source)
# If a source returns at least 5 results, we assume we got a good result set from it. If it
# returns less, we're more inclined to wait for straggling sources.
total_value_received += sources_to_priorities[source] * min(5, len(results)) / 5.0
logTimingData('DECREMENTING OUTSTANDING BY ' + str(sources_to_priorities[source]) + ' FOR SOURCE ' + source.sourceName)
total_potential_value_outstanding -= sources_to_priorities[source]
logTimingData('AT %f seconds elapsed, TOTAL VALUE RECEIVED IS %f, TOTAL OUTSTANDING IS %f' % (
elapsed_seconds, total_value_received, total_potential_value_outstanding
))
except Exception:
logs.warning('TERMINATE_WARNING SHIT IS F****D')
logs.report()
raise
if total_potential_value_outstanding <= 0:
logTimingData('ALL SOURCES DONE')
return
if total_value_received:
marginal_value_of_outstanding_sources = total_potential_value_outstanding / total_value_received
# Comes out to:
# 0.08 for 1s
# 0.25 for 1.5s
# 0.79 for 2s
# 2.51 for 2.5s
# 7.94 for 3s
# So we'll ditch that 4th remaining source for music around 1.5s; we'll ditch the second source for
# something like Places around 2s; we'll ditch any lingering source around 3s if we've received
# anything.
min_marginal_value = 10 ** (elapsed_seconds - 2.1)
if min_marginal_value > marginal_value_of_outstanding_sources:
sources_not_seen = [
source.sourceName for source in sources_to_priorities.keys() if source not in sources_seen
]
if sources_not_seen:
# This is interesting information whether we want the full timing data logged or not.
log_template = 'QUITTING EARLY: At %f second elapsed, bailing on sources [%s] because with ' + \
'value received %f, value outstanding %f, marginal value %f, min marginal value %f'
logs.debug(log_template % (
elapsed_seconds, ', '.join(sources_not_seen), total_value_received,
total_potential_value_outstanding, marginal_value_of_outstanding_sources, min_marginal_value
))
pool.kill()
return
gevent.sleep(0.01)
def __searchSource(self, source, queryCategory, queryText, resultsDict, timesDict, **queryParams):
try:
# Note that the timing here is not 100% legit because gevent won't interrupt code except on I/O, but it's good
# enough to give a solid idea.
before = datetime.datetime.now()
if shouldLogRawSourceResults:
queryParams['logRawResults'] = True
results = source.searchLite(queryCategory, queryText, **queryParams)
after = datetime.datetime.now()
# First level of filtering on data quality score -- results that are really horrendous get dropped entirely
# pre-clustering.
filteredResults = [result for result in results if result.dataQuality >= MIN_RESULT_DATA_QUALITY_TO_CLUSTER]
timesDict[source] = after - before
logs.debug("GOT RESULTS FROM SOURCE %s IN ELAPSED TIME %s -- COUNT: %d, AFTER FILTERING: %d" % (
source.sourceName, str(after - before), len(results), len(filteredResults)
))
resultsDict[source] = filteredResults
except GreenletExit:
pass
except:
logs.report()
resultsDict[source] = []
def search(self, category, text, timeout=SEARCH_TIMEOUT, limit=10, coords=None):
if not isinstance(text, unicode):
text = text.decode('utf-8')
if category not in Constants.categories:
raise Exception("unrecognized category: (%s)" % category)
start = datetime.datetime.now()
results = {}
times = {}
pool = utils.LoggingThreadPool(len(self.__categories_to_sources_and_priorities))
def termWaiting():
logs.debug('in termWaiting')
try:
return self.__terminateWaiting(pool, datetime.datetime.now(), category, results)
except Exception:
logs.report()
logs.debug('done with termWaiting')
logs.debug("SHOULD_DISABLE_TIMEOUT IS " + str(shouldDisableTimeout))
if not shouldDisableTimeout:
logTimingData('SPAWNING TERMINATE WAITING')
#pool.spawn(self.__terminateWaiting, pool, datetime.datetime.now(), category, results)
pool.spawn(termWaiting)
for (source, priority) in self.__categories_to_sources_and_priorities[category]:
# TODO: Handing the exact same timeout down to the inner call is probably wrong because we end up in this
# situation where outer pools and inner pools are using the same timeout and possibly the outer pool will
# nix the whole thing before the inner pool cancels out, which is what we'd prefer so that it's handled
# more gracefully.
pool.spawn(self.__searchSource, source, category, text, results, times, timeout=timeout, coords=coords)
logTimingData("TIME CHECK ISSUED ALL QUERIES AT " + str(datetime.datetime.now()))
pool.join()
logTimingData("TIME CHECK GOT ALL RESPONSES AT " + str(datetime.datetime.now()))
logTimingData('TIMES: ' + (', '.join(['%s took %s' % (source.sourceName, str(times[source])) for source in times])))
for source in self.__all_sources:
if source in results and results[source]:
logSourceResultsData("\nRESULTS FROM SOURCE " + source.sourceName + " TIME ELAPSED: " + str(times[source]) + "\n\n")
for result in results[source]:
logSourceResultsData(utils.normalize(repr(result)))
pass
beforeDeduping = datetime.datetime.now()
dedupedResults = SearchResultDeduper().dedupeResults(category, results.values())
afterDeduping = datetime.datetime.now()
logTimingData("DEDUPING TOOK " + str(afterDeduping - beforeDeduping))
logTimingData("TIME CHECK DONE AT:" + str(datetime.datetime.now()))
logTimingData("ELAPSED:" + str(afterDeduping - start))
logClusterData("\n\nDEDUPED RESULTS\n\n")
for dedupedResult in dedupedResults[:limit]:
logClusterData("\n\n%s\n\n" % str(dedupedResult))
return dedupedResults[:limit]
def __getEntityIdForCluster(self, cluster):
idsFromClusteredEntities = []
fastResolveQueries = []
for result in cluster.results:
if result.dataQuality < MIN_RESULT_DATA_QUALITY_TO_INCLUDE:
continue
if result.resolverObject.source == 'stamped':
idsFromClusteredEntities.append(result.resolverObject.key)
else:
fastResolveQueries.append((result.resolverObject.source, result.resolverObject.key))
fastResolvedIds = filter(None, self.__stampedSource.resolve_fast_batch(fastResolveQueries)) if fastResolveQueries else []
allIds = idsFromClusteredEntities + fastResolvedIds
if len(idsFromClusteredEntities) > 2:
logs.warning('Search results directly clustered multiple StampedSource results: [%s]' %
', '.join(str(entityId) for entityId in idsFromClusteredEntities))
elif len(allIds) > 2:
logs.warning('Search results indirectly clustered multiple entity IDs together: [%s]' %
', '.join(str(entityId) for entityId in allIds))
if not allIds:
return None
return allIds[0]
def __proxyToEntity(self, cluster):
# Additional level of filtering -- some things get clustered (for the purpose of boosting certain cluster
# scores) but never included in the final result because we're not 100% that the data is good enough to show
# users.
filteredResults = [r for r in cluster.results if r.dataQuality >= MIN_RESULT_DATA_QUALITY_TO_INCLUDE]
# So this is ugly, but it's pretty common for two listings to have the same or virtually the same data quality
# and using relevance as a tie-breaker is really helpful.
filteredResults.sort(key=lambda r: (r.dataQuality + (r.relevance / 10.0), r.resolverObject.source, r.resolverObject.key), reverse=True)
# TODO PRELAUNCH: Only use the best result from each source.
entity = EntityProxyContainer().addAllProxies(result.resolverObject for result in filteredResults).buildEntity()
for result in filteredResults:
entity.addThirdPartyId(result.resolverObject.source, result.resolverObject.key)
return entity
@utils.lazyProperty
def __stampedSource(self):
return StampedSource()
def __buildEntity(self, entityId):
entity = self.__entity_collection.getEntity(entityId)
entity._maybeRegenerateThirdPartyIds()
return entity
def rescoreFinalResults(self, entityAndClusterList):
def isTempEntity(entity):
return entity.entity_id is None
realEntityIds = [ entity.entity_id for (entity, cluster) in entityAndClusterList if not isTempEntity(entity) ]
entityStats = self.__stats_collection.getStatsForEntities(realEntityIds)
statsByEntityId = dict([(stats.entity_id, stats) for stats in entityStats])
def scoreEntityAndCluster((entity, cluster)):
if isTempEntity(entity):
dataScore = cluster.dataQuality
else:
numStamps = 0
if entity.entity_id in statsByEntityId:
numStamps = statsByEntityId[entity.entity_id].num_stamps
dataScore = 1.1 + math.log(numStamps+1, 50)
# TODO: Possibly distinguish even more about which of these have rich data. There are some types of data
# that don't affect dataQuality because they don't make us less certain about the state of a cluster, but
# they make user interactions with it more positive -- pictures, preview URLs, etc. We should factor
# these in here.
return dataScore * cluster.relevance
entityAndClusterList.sort(key=scoreEntityAndCluster, reverse=True)
def searchEntitiesAndClusters(self, category, text, timeout=SEARCH_TIMEOUT, limit=10, coords=None):
clusters = self.search(category, text, timeout=timeout, limit=limit, coords=coords)
searchDoneTime = datetime.datetime.now()
entityResults = []
entityIdsToNewClusterIdxs = {}
entitiesAndClusters = []
for cluster in clusters:
# TODO: make use of nemesis ids here.
entityId = self.__getEntityIdForCluster(cluster)
if not entityId:
# One more layer of filtering here -- clusters that don't overall hit our quality minimum get
# dropped. We never drop clusters that resolve to entities for this reason.
if cluster.dataQuality >= MIN_CLUSTER_DATA_QUALITY:
entitiesAndClusters.append((self.__proxyToEntity(cluster), cluster))
else:
logClusterData('DROPPING CLUSTER for shitty data quality:\n%s' % cluster)
# TODO PRELAUNCH: Make sure that the type we get from fast_resolve == the type we get from
# StampedSourceObject.key, or else using these as keys in a map together won't work.
elif entityId not in entityIdsToNewClusterIdxs:
entityIdsToNewClusterIdxs[entityId] = len(entitiesAndClusters)
entitiesAndClusters.append((self.__buildEntity(entityId), cluster))
else:
originalIndex = entityIdsToNewClusterIdxs[entityId]
(_, originalCluster) = entitiesAndClusters[originalIndex]
# We're not actually augmenting the result at all here; the result is the unadultered entity. We won't
# show an entity augmented with other third-party IDs we've attached in search results because it will
# create inconsistency for the entity show page and we don't know if they will definitely be attached.
# The point of the grok is entirely to boost the rank of the cluster (and thus of the entity.)
# TODO PRELAUNCH: Consider overriding this for sparse or user-created entities.
# TODO: Debug check to see if the two are definitely not a match according to our clustering logic.
originalCluster.grok(cluster)
# TODO: Reorder according to final scores that incorporate dataQuality and a richness score (presence of stamps,
# presence of enriched entity, etc.)
convertedToEntitiesTime = datetime.datetime.now()
logTimingData('CONVERTING TO ENTITIES TOOK: %s' % (convertedToEntitiesTime - searchDoneTime))
self.rescoreFinalResults(entitiesAndClusters)
rescoredTime = datetime.datetime.now()
logTimingData('RESCORING TOOK: %s' % (rescoredTime - convertedToEntitiesTime))
return entitiesAndClusters
def searchEntities(self, *args, **kwargs):
return [entity for entity, _ in self.searchEntitiesAndClusters(*args, **kwargs)]
