melpa/scripts/process_log.py
2013-08-24 11:08:09 +01:00

138 lines
3.3 KiB
Python
Executable file

#!/usr/bin/env python
import argparse
from datetime import datetime
import gzip
import json
import os
import re
import sys
import time
import tempfile
LOGFILE = "/var/log/nginx/melpa/melpa.access.log"
LOGREGEX = r'(?P<ip>[\d.]+) [ -]+ \[(?P<date>[\w/: -]+)\] ' \
r'"GET /packages/(?P<package>[^ ]+)-[0-9.]+.(?:el|tar) ' \
r'HTTP/\d.\d" 200'
def json_handler(obj):
if isinstance(obj, datetime):
return obj.isoformat()
elif isinstance(obj, set):
return list(obj)
raise TypeError(
'Object of type {0} with value {0} is not JSON serializable'.format(
type(obj), repr(obj)))
def json_dump(data, jsonfile, indent=None):
"""
jsonfiy `data`
"""
return json.dump(data, jsonfile, default=json_handler, indent=indent)
def datetime_parser(dct):
for key, val in dct.items():
if isinstance(val, list):
dct[key] = set(val)
return dct
def json_load(jsonfile):
return json.load(jsonfile, object_hook=datetime_parser)
def parse_val(val):
try:
return datetime.strptime(val, "%Y-%m-%dT%H:%M:%S")
except ValueError:
return val
def parse_logfile(logfilename, pkg_ip_time):
"""
"""
if logfilename.endswith("gz"):
logfile = gzip.open(logfilename, 'r')
else:
logfile = open(logfilename, 'r')
logre = re.compile(LOGREGEX)
count = 0
for line in logfile:
match = logre.match(line)
if match is None:
continue
ip = match.group('ip')
dtstamp = int(time.mktime(
datetime.strptime(match.group('date').split()[0],
"%d/%b/%Y:%H:%M:%S").timetuple()))
pkg = match.group('package')
pkg_ip_time.setdefault(pkg, {}).setdefault(ip, set()).add(dtstamp)
count += 1
return count
def main():
"""main function"""
parser = argparse.ArgumentParser(description='MELPA Log File Parser')
parser.add_argument('logs', metavar="logs", type=unicode, nargs="*",
help="Log files to parse.", default=[LOGFILE])
args = parser.parse_args()
pid = str(os.getpid())
pidfile = os.path.join(os.path.join(tempfile.gettempdir(), "process_log.pid"))
if os.access(pidfile, os.F_OK):
running_pid = open(pidfile, "r").readline()
try:
os.kill(int(running_pid), 0)
print "Process {0} currently running.".format(running_pid)
return 1
except OSError:
print "Stale lockfile."
os.unlink(pidfile)
file(pidfile, 'w').write(pid)
# load old data file
if os.path.exists("download_log.json.gz"):
pkg_ip_time = json_load(gzip.open("download_log.json.gz"))
else:
pkg_ip_time = {}
# parse each parameter
for logfile in args.logs:
sys.stdout.write("processing logfile {0}... ".format(logfile))
sys.stdout.flush()
count = parse_logfile(logfile, pkg_ip_time)
sys.stdout.write("{0}\n".format(count))
# dump new data file
json_dump(pkg_ip_time, gzip.open("download_log.json.gz", 'w'))
# calculate current package totals
pkgcount = {p: len(i) for p, i in pkg_ip_time.iteritems()}
json_dump(pkgcount, open("html/download_counts.json", 'w'), indent=1)
os.unlink(pidfile)
return 0
if __name__ == '__main__':
sys.exit(main())