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https://github.com/munin-monitoring/contrib.git
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Rework to tail_open log files
This commit is contained in:
Paul Saunders
parent
7f94d4d68e
commit
b17436fe80
1 changed files with 173 additions and 45 deletions
218
plugins/znc/znc_logs.py
Normal file → Executable file
218
plugins/znc/znc_logs.py
Normal file → Executable file
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@ -11,7 +11,9 @@ Shows lines/minute in today's znc-logs
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[znc_logs]
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user znc # or any other user/group that can read the znclog-folder
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group znc
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env.logdir /var/lib/znc/moddata/log/ # path to the log-folder with a "/" at the end
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env.logdir /var/lib/znc/moddata/log/ # path to the GLOBAL log-folder with a "/" at the end
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env.expire 0 # Keep channel names forever - OR -
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env.expire 1 # Forget channel names from last run
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=head1 COPYRIGHT
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GPL VERSION 3
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@ -19,67 +21,193 @@ GPL VERSION 3
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=head1 AUTHOR
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Thor77 <thor77[at]thor77.org>
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'''
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from sys import argv
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from time import strftime
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from os import environ, listdir
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import json
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import os, sys, time
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import re
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import stat
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import traceback
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logdir = environ.get('logdir')
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logdir = os.environ.get('logdir')
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expire = os.environ.get('expire', 0)
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if not logdir:
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raise Exception('You have to set the logdir with env.logdir <path to log> in the plugin-conf!')
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date = strftime('%Y%m%d')
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last_values_file = environ['MUNIN_PLUGSTATE'] + '/last_values'
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date = time.strftime('%Y%m%d')
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longdate = time.strftime('%Y-%m-%d')
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last_values_file = os.environ['MUNIN_PLUGSTATE'] + '/znc_logs_last'
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def get_last():
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try:
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d = {}
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with open(last_values_file, 'r') as f:
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for line in f:
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line = line[:-1]
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key, value = line.split(':')
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d[key] = float(value)
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d = json.load(f)
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return d
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except FileNotFoundError:
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return {}
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def tail_open(filename, position=0):
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# Based on tail_open from perls' Munin::Plugin
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filereset = 0
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size = os.stat(filename)[stat.ST_SIZE]
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if size is None:
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return (undef, undef)
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f = open(filename, 'r', encoding='utf-8', errors='replace')
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if position > size:
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filereset = 1
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else:
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f.seek(position, 0)
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newpos = f.tell()
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if newpos != position:
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raise Exception
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return (f, filereset)
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def data():
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last = get_last()
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current = {}
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for filename in listdir(logdir):
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filename_ = filename.replace('.log', '')
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network, channel, file_date = filename_.split('_')
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network_channel = '{}_{}'.format(network, channel)
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# check if log is from today and it is a channel
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if file_date == date and channel.startswith('#'):
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# current lines in the file
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current_value = sum(1 for i in open(logdir + filename, 'r', encoding='utf-8', errors='replace'))
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if network_channel not in last:
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value = 0
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else:
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last_value = last[network_channel]
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# what munin gets
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value = (current_value - last_value) / 5 # subtrate last from current and divide through 5 to get new lines / minute
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if value < 0:
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value = 0
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# save it to the states-file
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current[network_channel] = current_value
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# print things to munin
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network_channel = network_channel.replace('.', '').replace('#', '')
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print('{network_channel}.label {channel}@{network}'.format(network_channel=network_channel, channel=channel, network=network))
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print('{network_channel}.value {value}'.format(network_channel=network_channel, value=value))
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with open(last_values_file, 'w') as f:
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for k in current:
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f.write('{}:{}\n'.format(k, current[k]))
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def tail_close(fh):
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position = fh.tell()
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fh.close()
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return position
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if len(argv) > 1 and argv[1] == 'config':
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last = get_last()
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if "users" in last:
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user_list = last["users"]
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else:
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user_list = {}
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if "channels" in last:
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channel_list = last["channels"]
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else:
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channel_list = {}
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if "log_pos" in last:
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log_pos = last["log_pos"]
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else:
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log_pos = {}
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channel_stats = {}
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user_stats = {}
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def read_data(savestate=True):
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# Version 1.6 will change to directory-based filing, so walk recursively
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for (dirpath, dirnames, filenames) in os.walk(logdir):
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for filename in filenames:
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filename_ = filename.replace('.log', '')
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user, network, channel, file_date = (None, None, None, None)
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try:
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if len(dirpath) > len(logdir):
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# We're below the log path, so this is a 1.6-style log
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reldir = dirpath.replace(logdir + "/", '', 1)
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try:
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network, channel = reldir.split(os.sep)
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except ValueError as e:
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user, network, channel = reldir.split(os.sep)
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file_date = filename_
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else:
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try:
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network, channel, file_date = filename_.split('_')
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except ValueError as e:
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user, network, channel, file_date = filename_.split('_')
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except ValueError as e:
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continue
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network_channel = '{}@{}'.format(channel, network)
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if network.lower() not in channel_list:
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channel_list[network.lower()] = {}
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if channel.startswith('#'):
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channel_list[network.lower()][channel.lower()] = network_channel
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user_list[user.lower()] = user
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# check if log is from today
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if (file_date == date or file_date == longdate):
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# current lines in the file
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(fh, r) = tail_open(os.path.join(dirpath,filename), log_pos.get(os.path.join(dirpath, filename), 0))
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current_value = 0
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while True:
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where = fh.tell()
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line = fh.readline()
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if line.endswith('\n'):
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current_value += 1
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else:
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# Incomplete last line
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fh.seek(where, 0)
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log_pos[os.path.join(dirpath, filename)] = tail_close(fh)
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break
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if network_channel.lower() in channel_stats and channel.startswith('#'):
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channel_stats[network_channel.lower()] += current_value
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else:
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channel_stats[network_channel.lower()] = current_value
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if user is not None and user.lower() in user_stats:
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user_stats[user.lower()] += current_value
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else:
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user_stats[user.lower()] = current_value
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if savestate:
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savedata = {}
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if int(expire) == 0:
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savedata["users"] = user_list
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savedata["channels"] = channel_list
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savedata["log_pos"] = log_pos
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with open(last_values_file, 'w') as f:
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json.dump(savedata,f)
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def emit_config():
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print('graph_title Lines in the ZNC-log')
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print('graph_category znc')
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print('graph_vlabel lines/minute')
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print('graph_vlabel lines / ${graph_period}')
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print('graph_scale no')
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data()
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print('graph_args --base 1000 --lower-limit 0')
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print('graph_period minute')
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graph_order = []
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if 'MUNIN_CAP_DIRTYCONFIG' in os.environ and os.environ['MUNIN_CAP_DIRTYCONFIG'] == 1:
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read_data(1)
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else:
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read_data(0)
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for network in channel_list.keys():
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for channel in channel_list[network].keys():
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# print things to munin
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network_channel = "{}_{}".format(network,channel).replace('.', '').replace('#', '').replace('@','_')
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print('{network_channel}.label {label}'.format(network_channel=network_channel, label=channel_list[network][channel]))
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print('{network_channel}.type ABSOLUTE'.format(network_channel=network_channel))
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print('{network_channel}.min 0'.format(network_channel=network_channel))
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print('{network_channel}.draw AREASTACK'.format(network_channel=network_channel))
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graph_order.append(network_channel)
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for user in user_list.keys():
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fuser = re.sub(r'^[^A-Za-z_]', '_', user)
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fuser = re.sub(r'[^A-Za-z0-9_]', '_', fuser)
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print('{fuser}.label User {user}'.format(fuser=fuser, user=user))
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print('{fuser}.type ABSOLUTE'.format(fuser=fuser))
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print('{fuser}.min 0'.format(fuser=fuser))
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print('{fuser}.draw LINE1'.format(fuser=fuser))
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print('graph_order {}'.format(" ".join(sorted(graph_order, key=str.lower))))
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def emit_values():
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read_data(1)
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for network in channel_list.keys():
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for channel in channel_list[network].keys():
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# print things to munin
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key = channel_list[network][channel]
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network_channel = "{}_{}".format(network,channel).replace('.', '').replace('#', '').replace('@','_')
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if key.lower() in channel_stats:
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print('{network_channel}.value {value}'.format(network_channel=network_channel, value=channel_stats[key.lower()]))
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else:
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print('{network_channel}.value U'.format(network_channel=network_channel))
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for user in user_list.keys():
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fuser = re.sub(r'^[^A-Za-z_]', '_', user)
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fuser = re.sub(r'[^A-Za-z0-9_]', '_', fuser)
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if user.lower() in user_stats:
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print('{fuser}.value {value}'.format(fuser=fuser, value=user_stats[user.lower()]))
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else:
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print('{fuser}.value U'.format(fuser=fuser))
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if len(sys.argv) > 1 and sys.argv[1] == 'config':
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emit_config()
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sys.exit(0)
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emit_values()
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