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[premysl.vyhnal] optimize get_days_with_logs(). Fixes #4964

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Yann Leboulanger 2009-04-13 09:05:22 +00:00
parent 2986ceb830
commit 84b65054b1
1 changed files with 7 additions and 27 deletions
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34
src/common/logger.py
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@ -586,8 +586,12 @@ class Logger:
seconds_in_a_day = 86400 # 60 * 60 * 24
last_second_of_month = start_of_month + (seconds_in_a_day * max_day) - 1
# Select times and 'floor' them to time 0:00
# (by dividing, they are integers)
# and take only one of the same values (distinct)
# Now we have timestamps of time 0:00 of every day with logs
self.cur.execute('''
SELECT time FROM logs
SELECT DISTINCT time/(86400)*86400 FROM logs
WHERE (%s)
AND time BETWEEN %d AND %d
AND kind NOT IN (%d, %d)
@ -596,34 +600,10 @@ class Logger:
constants.KIND_STATUS, constants.KIND_GCSTATUS))
result = self.cur.fetchall()
# Copy all interesting times in a temporary table
try:
self.cur.execute('CREATE TEMPORARY TABLE temp_table(time,INTEGER)')
except sqlite.OperationalError, e:
raise exceptions.PysqliteOperationalError(str(e))
# convert timestamps to day of month
for line in result:
self.cur.execute('''
INSERT INTO temp_table (time) VALUES (%d)
''' % (line[0]))
days_with_logs[0:0]=[time.gmtime(line[0])[2]]
# then search in this small temp table for each day
for day in xrange(1, max_day + 1): # count from 1 to 28 or to 30 or to 31
start_of_day = self.get_unix_time_from_date(year, month, day)
last_second_of_day = start_of_day + seconds_in_a_day - 1
# just ask one row to see if we have sth for this date
self.cur.execute('''
SELECT time FROM temp_table
WHERE time BETWEEN %d AND %d
LIMIT 1
''' % (start_of_day, last_second_of_day))
result = self.cur.fetchone()
if result:
days_with_logs[0:0]=[day]
# Delete temporary table
self.cur.execute('DROP TABLE temp_table')
result = self.cur.fetchone()
return days_with_logs
def get_last_date_that_has_logs(self, jid, account = None, is_room = False):