def update_user_favor_item_id_list(uid, resource_type, item_id, favor_type):
""" update user favor item id list, @return True|False
"""
resource_type = ResourceType.get_resource_type(item_id)
assert(resource_type)
errCode, kv_dict = model.get_online_user_favor_item_list(uid, [resource_type])
if not is_valid_data(errCode, kv_dict, "online_user_favor_item_list", {"uid":uid, "resource_type":resource_type}):
return False
logger.debug("resource_type:%s, kv_dict:%s" % (resource_type, kv_dict))
item_id_list_proto = ItemIdList()
try:
if kv_dict:
assert(resource_type in kv_dict)
item_id_list_proto.ParseFromString(kv_dict[resource_type])
logger.debug("favor item_id_list:%s" % item_id_list_proto)
except:
logger.error("bad ItemIdList from get_online_user_favor_item_list:uid:%s, resource_type:%s, exception:%s" % (uid, resource_type, traceback.format_exc()))
return False
item_id_list_proto.item_id.append(item_id)
limit_protobuf_repeated_scala_field_size(item_id_list_proto, "item_id", MAX_FAVOR_ITEM_LIST_COUNT_PER_PERSON)
logger.debug("new item_id_list:%s" % item_id_list_proto)
errCode = model.set_online_user_favor_item_list(uid, resource_type, item_id_list_proto.SerializeToString())
if not errCode:
logger.warn("fail to set_online_user_favor_item_list, uid:%s, resource_type:%s" % (uid, resource_type))
else:
logger.info("successfully to set_online_user_favor_item_list, uid:%s, resource_type:%s" % (uid, resource_type))
return errCode
def get_item_list_by_item(user_info, resource_type, count):
""" get item_list by item recommendation
@return RecommendItemContainer
"""
logger.debug("begin get_item_list_by_item")
uid = user_info.uid
result = RecommendItemContainer()
#get favor item_id列表
errCode, kv_dict = model.get_online_user_favor_item_list(uid, [resource_type])
if not is_valid_data(errCode, kv_dict, "online_user_favor_item_list", {"uid":uid, "resource_type":resource_type}):
return result
if not kv_dict:
return result
assert(resource_type in kv_dict)
try:
item_id_list_proto = ItemIdList()
item_id_list_proto.ParseFromString(kv_dict[resource_type])
reason_list = [resource_type+ITEM_RECOMMEND_FEATURE_TYPE+v for v in item_id_list_proto.item_id]
item_id_list = []
for v in item_id_list_proto.item_id:
if not check_reason(user_info, resource_type+ITEM_RECOMMEND_FEATURE_TYPE+v):
continue
item_id_list.append(v)
if not item_id_list:
logger.info("all item id list have no item2item result:%s" % item_id_list)
return result
#@note: use latest item first
item_id_list.reverse()
#recommend by item id
errCode, kv_dict = model.get_offline_item_recommend_item_list(item_id_list)
if not is_valid_data(errCode, kv_dict, "offline_item_recommend_item_list", {"item_id_list":"..."}):
return result
if not kv_dict:
for item_id in item_id_list:
reason = resource_type + ITEM_RECOMMEND_FEATURE_TYPE + item_id
ignore_reason(user_info, reason)
return result
for item_id in item_id_list:
if result.size() >= count:
break
if item_id not in kv_dict:
logger.info("no item2itemid list for id:%s" % item_id)
ignore_reason(user_info, reason)
continue
k = item_id
v = kv_dict[k]
reason = resource_type + ITEM_RECOMMEND_FEATURE_TYPE + k
item_id_list_proto = ItemIdList()
item_id_list_proto.ParseFromString(v)
filter_and_compose_recommend_item_list(user_info, reason, item_id_list_proto, result)
except:
logger.error("bad get_item_list_by_item:%s" % traceback.format_exc())
return result
