版权声明 本站原创文章 由 萌叔 发表 转载请注明 萌叔 | http://vearne.cc 起因 python 的日志收集服务是线程安全的(对同一个文件的写入，使用了锁)，但是对于多进程的情况，它是无法处理的。python 官方文档推荐的做法是，使用tcp 服务器专门用于日志的收集，以确保对的文件的写入是安全的。这里提供了日志收集服务器基于twisted的实现，可供参考，程序在centos上进行了测试，并可用于生产环境 当client 和server 在一台机器上时，每秒可以处理6000条日志记录
#!/usr/bin/env python # -*- coding:utf-8 -*- ################################## # logserver # 通过socket接收并存储日志信息 # 注:测试程序为test_logserver.py # 修改时间:2013-11-22 ################################### # standard lib import os, sys import time import twisted import logging import traceback import struct import cPickle # use cPickle for speed from logging.handlers import TimedRotatingFileHandler from twisted.internet.protocol import Protocol, Factory # our own code import settings from log_record import initlog # 根据logger name生成一个 def gen_log_name(name): name = name.replace('.', '_') return name + '.log' class ReceiveProtocol(Protocol): HEADER_LENGTH = 4 def __init__(self): self.buf = '' self.state = 'init' self.require_length = ReceiveProtocol.HEADER_LENGTH # 记录当前完成初始化的logger名称 self.logger_dict = {} def connectionMade(self): logger = logging.getLogger('log_server') logger.info('[makeConnection]与logger_client建立socket连接。') def dataReceived(self, data): logger = logging.getLogger('log_server') try: if len(self.buf + data) >= self.require_length: self.buf = self.buf + data # 数据就绪进行相应动作 data = self.buf[0:self.require_length] # 把数据从缓冲区中取走 self.buf = self.buf[self.require_length:] self.solve(data) # 可能一次读到了多条日志记录 if self.buf: self.dataReceived('') else: self.buf += data except BaseException, e: logger.error('处理记录失败' + str(e) + '\n' + traceback.format_exc()) def solve(self, data): logger = logging.getLogger('log_server') statehandler = None try: pto = 'proto_' + self.state statehandler = getattr(self,pto) except AttributeError: logger.error('callback',self.state,'not found') self.transport.loseConnection() statehandler(data) if self.state == 'done': self.transport.loseConnection() def connectionLost(self, reason): logger = logging.getLogger('log_server') logger.info('[connectionLost]与logger_client的socket连接关闭。') # 记录日志 def proto_record(self, data): logRecord = logging.makeLogRecord(cPickle.loads(data)) if logRecord.name not in self.logger_dict: logger = initlog(logRecord.name, settings.PATH, gen_log_name(logRecord.name), logLevel=logging.DEBUG) self.logger_dict[logRecord.name] = logger self.logger_dict[logRecord.name].handle(logRecord) # 修改下一步动作以及所需长度 self.state = 'init' self.require_length = ReceiveProtocol.HEADER_LENGTH # 处理头部信息 def proto_init(self, data): length = struct.unpack('!I', data[0:ReceiveProtocol.HEADER_LENGTH])[0] # 修改下一步动作以及所需长度 self.state = 'record' self.require_length = length if len(self.buf) >= self.require_length: data = self.buf[0:self.require_length] # 把数据从缓冲区中取走 self.buf = self.buf[self.require_length:] self.solve(data) class ReceiveFactory(Factory): def buildProtocol(self, addr): return ReceiveProtocol() def main(): print 'logserver has started.' logger = logging.getLogger('log_server') logger.info('logserver has started.') from twisted.internet import epollreactor epollreactor.install() reactor = twisted.internet.reactor reactor.listenTCP(settings.PORT, ReceiveFactory()) reactor.run() if __name__ == '__main__': main() 完整程序: https://github.com/vearne/log_server/tree/master
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