python – CherryPy日志记录：如何配置和使用全局和应用程序级别

发布时间：2020-12-16 23:09:18 所属栏目：Python 来源：网络整理

导读：我在登录方面遇到了麻烦.我正在运行CherryPy 3.2并且我一直在阅读文档 here,但是没有找到任何关于如何为输出配置本地日志文件以及如何写入它的示例. Raspberry.py： import socketimport sysimport cherrypyapp_roots = { # Sean's laptop dev environment.

我在登录方面遇到了麻烦.我正在运行CherryPy 3.2并且我一直在阅读文档 here,但是没有找到任何关于如何为输出配置本地日志文件以及如何写入它的示例.

Raspberry.py：

import socket
import sys
import cherrypy

app_roots = {
                # Sean's laptop dev environment.
                "mylaptop": "/home/src/local-mydomain.com/py",# Hosted dev environment.  
                "mydomain.com" : "/home/dev/src/py"
            }


hostname = socket.gethostname()
CherryPyLog = cherrypy.tree.mount().log

if hostname not in app_roots:
    CherryPyLog("The following hostname does not have an app_root entry in raspberry.py.  Exiting early.")
    sys.exit()

sys.stdout = sys.stderr
sys.path.append(app_roots[hostname])

import os
os.chdir(app_root)

# Setup for raspberry application logging.
import datetime
today = datetime.datetime.today()
log.access_file = "{0}/{1}.raspberry.access.log".format(app_roots[hostname],today.strftime("%Y%m%d-%H%M"))
log.error_file = "{0}/{1}.raspberry.error.log".format(app_roots[hostname],today.strftime("%Y%m%d-%H%M"))

#Testing logger
log("{0} -- Logger configured".format(today.strftime("%Y%m%d-%H%M%S")))

import atexit
cherrypy.config.update({'environment': 'embedded'})

if cherrypy.__version__.startswith('3.0') and cherrypy.engine.state == 0:
    cherrypy.engine.start(blocking = False)
    atexit.register(cherrypy.engine.stop)

from web.controllers.root import RaspberryRequestHandler

application = cherrypy.Application(RaspberryRequestHandler(),script_name = None,config = None)

更新：这是我最终使用的代码块.

app_roots = {
                # Sean's laptop dev environment.
                "mylaptop": "/home/src/local-plottools.com/py",# Hosted dev environment.  
                "myDomain" : "/home/dev/src/py"
            }

import socket
hostname = socket.gethostname()

import cherrypy
import sys
if hostname not in app_roots:
    cherrypy.log("The hostname {0} does not have an app_root entry in {1}.  Exiting early.".format(hostname,__file__))
    sys.exit()

sys.stdout = sys.stderr
sys.path.append(app_roots[hostname])

import os
os.chdir(app_roots[hostname])

from web.controllers.root import RaspberryRequestHandler

cherrypy.config.update({
    'log.access_file': "{0}/cherrypy-access.log".format(app_roots[hostname]),'log.error_file': "{0}/cherrypy.log".format(app_roots[hostname]),"server.thread_pool" : 10
})

# special case,handling debug sessions when quickstart is needed.
if __name__ == "__main__":

    cherrypy.config.update({
                                'log.screen': True,"server.socket_port": 8000
                            })
    cherrypy.quickstart(RaspberryRequestHandler())
    sys.exit()

# This configuration is needed for running under mod_wsgi.  See here:  http://tools.cherrypy.org/wiki/ModWSGI    
cherrypy.config.update({'environment': 'embedded'})

applicationLogName = "{0}/raspberry.log".format(app_roots[hostname])

from logging import handlers
applicationLogFileHandler = handlers.RotatingFileHandler(applicationLogName,'a',10000000,1000)

import logging
applicationLogFileHandler.setLevel(logging.DEBUG)

from cherrypy import _cplogging
applicationLogFileHandler.setFormatter(_cplogging.logfmt)

cherrypy.log.error_log.addHandler(applicationLogFileHandler)

application = cherrypy.Application(RaspberryRequestHandler(),None)

解决方法

简化一下：

import os
import socket
import sys

import cherrypy

app_roots = {
                # Sean's laptop dev environment.
                "mylaptop": "/home/src/local-mydomain.com/py",# Hosted dev environment.  
                "mydomain.com" : "/home/dev/src/py"
            }


hostname = socket.gethostname()
if hostname not in app_roots:
    cherrypy.log("The hostname %r does not have an app_root entry in "
                 "raspberry.py.  Exiting early." % hostname)
    sys.exit()

sys.path.append(app_roots[hostname])
os.chdir(app_root)

cherrypy.config.update({
    'environment': 'embedded','log.access_file': "{0}/raspberry.access.log".format(app_roots[hostname]),'log.error_file': "{0}/raspberry.error.log".format(app_roots[hostname]),})

from web.controllers.root import RaspberryRequestHandler
application = cherrypy.tree.mount(RaspberryRequestHandler(),'/')
# Insert log changes here
cherrypy.engine.start()

如果您每天需要不同的日志,请使用RotatingFileHandler,如http://www.cherrypy.org/wiki/Logging#CustomHandlers所述.我认为您缺少的重要一点是,只有在您实例化应用程序后才应该使用app.log(例如,通过tree.mount()),如上所述),但在engine.start之前.也就是说,对于错误日志：

application = cherrypy.tree.mount(RaspberryRequestHandler(),'/')

log = application.log
log.error_file = ""

# Make a new RotatingFileHandler for the error log.
fname = "{0}/raspberry.error.log".format(app_roots[hostname])
h = handlers.RotatingFileHandler(fname,1000)
h.setLevel(DEBUG)
h.setFormatter(_cplogging.logfmt)
log.error_log.addHandler(h)

cherrypy.engine.start()

希望有帮助……

（编辑：李大同）

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