def persist_questions(self, question_list_per_topic):
insert_sql = "INSERT IGNORE INTO ZHIHU_QUESTION " \
"(QUESTION_ID, QUESTION_TITLE, ANSWER, IS_TOP_QUESTION, CREATED_TIME) " \
"VALUES (%s, %s, %s, %s, %s)"
tm = TransactionManager()
tm.execute_many_sql(insert_sql, question_list_per_topic)
tm.close_connection()
def generate_question_id_list(self, last_visit):
question_id_list = []
if self.is_develop_mode():
return get_question_id_list()
available_ids = generate_available_ids(MAX_QUESTION_TABLE_ID, QUESTION_ID_STEP)
available_id_list = available_ids.split(',')
import math
loop = int(math.ceil(float(len(available_id_list))/AVAIL_ID_SIZE_THRESHOLD))
print "......loop:%s" % loop
i = 0
pre_sql = None
tm = TransactionManager()
while i < loop:
begin_index = i * AVAIL_ID_SIZE_THRESHOLD
end_index = (i + 1) * AVAIL_ID_SIZE_THRESHOLD
sql = "SELECT QUESTION_ID FROM (select @index:=@index+1 as ID, QUESTION_ID, LAST_VISIT from ZHIHU_QUESTION_ID) AS q WHERE timestamp(q.LAST_VISIT) < timestamp('%s')" % last_visit
sql += " AND ID IN (%s) " % ",".join(available_id_list[begin_index:end_index])
if i == 1:
pre_sql = "SET @index=0;"
results = tm.execute_sql(sql, pre_sql)
for row in results:
question_id_list.append(str(row[0]))
i += 1
tm.close_connection()
return question_id_list
def get_proxy_from_db():
select_sql = "SELECT PROXY_IP FROM ZHIHU_PROXY ORDER BY RAND() LIMIT 1"
tm = TransactionManager()
results = tm.execute_sql(select_sql)
tm.close_connection()
if len(results) == 0:
return ""
for row in results:
return str(row[0])
def persist_topics(topic_list):
"""
Persist topics into mysql
:param topic_list: all the topics including level 1 and level 2.
:return: None
"""
insert_sql = "INSERT IGNORE INTO ZHIHU_TOPIC (TOPIC_ID, NAME, PARENT_ID) \
VALUES (%s, %s, %s)"
print "insert sql:%s" % insert_sql
tm = TransactionManager()
tm.execute_many_sql(insert_sql, topic_list)
tm.close_connection()
def get_level2_topic_id_list(last_visit_date, is_develop=False):
level2_topic_id_list = []
sql = "SELECT TOPIC_ID FROM ZHIHU_TOPIC WHERE TOPIC_ID != PARENT_ID AND LAST_VISIT < '%s'" \
% last_visit_date
available_topic_ids = generate_available_topic_ids(MAX_TOPIC_TABLE_ID, TOPIC_ID_STEP)
sql += " AND ID IN (%s) " % available_topic_ids
if is_develop:
sql += " LIMIT 2"
print "......execute sql:%s" % sql
tm = TransactionManager()
results = tm.execute_sql(sql)
tm.close_connection()
for row in results:
level2_topic_id_list.append(str(row[0]))
return level2_topic_id_list
def update_level2_topic_timestamp(level2_topic_id):
sql = "UPDATE ZHIHU_TOPIC SET LAST_VISIT = '%s' WHERE TOPIC_ID = %s" % \
(get_current_timestamp(), level2_topic_id)
tm = TransactionManager()
tm.execute_sql(sql)
tm.close_connection()