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init commit of multiprocess log parser

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rra 3 weeks ago
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3f78d8ccb2
1 changed files with 82 additions and 0 deletions
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      logparser_multiprocess.py

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logparser_multiprocess.py View File

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import apachelogs, gzip, os, sqlite3
import multiprocessing, time
parser = apachelogs.LogParser(apachelogs.COMBINED)
#entry = parser.parse('207.237.221.51 - - [22/Jan/2021:00:14:58 +0100] "GET /feeds/all.rss.xml HTTP/2.0" 304 0 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0"')
def create_db():
db_name = 'traffic_stats2.db'
if not os.path.exists(db_name):
conn = sqlite3.connect(db_name)
c = conn.cursor()
c.execute("""CREATE TABLE traffic
(datetimes timestamp,
bytes integer);""")
conn.commit()
c.close()
def populate_db(pairlist):
#timeout is so we can avoid database locks
#if multiple processes try to write to it shortly after another
conn = sqlite3.connect('traffic_stats2.db', timeout=30)
c = conn.cursor()
c.execute('''PRAGMA synchronous = OFF''')
c.execute('''PRAGMA journal_mode = OFF''')
sqliteparam = """ INSERT INTO 'traffic'
('datetimes', 'bytes') VALUES
(?,?);"""
c.executemany(sqliteparam, pairlist)
conn.commit()
c.close()
def parse_log(gzip_file):
pairs = []
try:
logfile = gzip.open(gzip_file, 'r')
log = logfile.readlines()
for line in log:
if line:
line = line.decode('ascii').strip().strip('\x00') #hacky way to remove null bytes? https://stackoverflow.com/a/56904541
try:
entry = parser.parse(str(line))
pairs.append((entry.request_time, entry.bytes_sent))
except Exception as e:
# print(e)
# this catches malformed entries but that is less than 0.1% of total set
pass
populate_db(pairs)
print(gzip_file,'\n')
except Exception as e:
print(e,g)
files_to_process = []
for g in os.listdir('/home/r/Programming/ltm-2020-stats/traffic/solar_logs'):
if os.path.isfile(g):
if g.endswith('.gzip'):
if g:
if not g.startswith('2019'):
if not g.startswith('2021'):
files_to_process.append(g)
files_to_process.sort()
if __name__ == '__main__':
starttime = time.time()
create_db()
manager = multiprocessing.Manager()
pool = multiprocessing.Pool()
pool.map(parse_log, files_to_process)
pool.close()
print()
print('saving data')
print('Time taken = {} seconds'.format(time.time() - starttime))

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