Created
January 6, 2016 02:51
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# coding: utf-8 | |
import os | |
import logging | |
import re | |
logger = logging.getLogger(__name__) | |
logger.setLevel(logging.DEBUG) | |
ch = logging.StreamHandler() | |
ch.setLevel(logging.DEBUG) | |
logger.addHandler(ch) | |
class LogReport(object): | |
LOG_GROUP_NAME = 'LOG_GROUP_NAME' | |
FILTER_PATTERN = '[ip, dummy1, uid, timestamp, request, status_code = ' \ | |
'%(status_code)s, bytes, referer, user_agent]' | |
PATH_PATTERN = re.compile( | |
r'"(?:GET|POST|HEAD) (?P<path>[^ ]+) [^ ]+" \d{3}') | |
def __init__(self, output_path): | |
self.output_path = output_path | |
def output_report(self): | |
import boto3 | |
self.client = boto3.client('logs') | |
def get_timestamp_with_milliseconds(days_before): | |
"""指定した日付前のタイムスタンプを取得します。""" | |
import time | |
from datetime import date, timedelta | |
dt = date.today() - timedelta(days=days_before) | |
timestamp = time.mktime(dt.timetuple()) | |
return int(timestamp) * 1000 # タイムスタンプをミリ秒に直します。 | |
# 1週間分のログを取得しています。 | |
# ※面倒なので、UTCからJSTになおしていません。 | |
self.start_time = get_timestamp_with_milliseconds(1+7) | |
self.end_time = get_timestamp_with_milliseconds(1) - 1 | |
logger.debug('start_time: %d' % self.start_time) | |
logger.debug('end_time: %d' % self.end_time) | |
s4xx_paths = self.get_4xx_paths() | |
logger.debug('4xx_paths: %s' % s4xx_paths) | |
# レポートに出力します。 | |
self.output(s4xx_paths) | |
def get_4xx_paths(self): | |
""" | |
4xxが発生したパスと回数を、回数の降順で取得します。 | |
Returns: | |
(パス, 回数)のtupleが入ったlist | |
""" | |
import collections | |
data = collections.defaultdict(int) | |
ptn = self.FILTER_PATTERN % {'status_code': '4*'} | |
params = { | |
'logGroupName': self.LOG_GROUP_NAME, | |
'filterPattern': ptn, | |
'startTime': self.start_time, | |
'endTime': self.end_time, | |
} | |
response = self.client.filter_log_events(**params) | |
for event in response['events']: | |
message = event['message'] | |
m = self.PATH_PATTERN.search(message) | |
if m: | |
data[m.group('path')] += 1 | |
# 出現回数の降順でソートします。 | |
return sorted(data.items(), reverse=True, key=lambda t: t[1]) | |
def output(self, s4xx_paths): | |
# ファイルに出力します。 | |
if os.path.isdir(os.path.dirname(self.output_path)): | |
with open(self.output_path, 'w') as fp: | |
fmt = '{path}: {cnt}' + os.linesep | |
for path, cnt in s4xx_paths: | |
fp.write(fmt.format(path=path, cnt=cnt)) | |
def main(): | |
logreport = LogReport('./report.txt') | |
logreport.output_report() | |
if __name__ == '__main__': | |
main() |
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