调试=Fals时未触发自定义记录器

Question

我在settings.py中有以下代码：

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_true': { '()': 'django.utils.log.RequireDebugTrue', },
    },
    'handlers': {
        'console': {
            'filters': ['require_debug_true'],
            'class': 'logging.StreamHandler',
        },
        'kodular': {
            'level': 'WARNING',
            'class': 'account.reporter.KodularExceptionHandler',
        },
    },
    'loggers': {
        'django': {
            'handlers': ['console', 'kodular'],
            'level': os.getenv('DJANGO_LOG_LEVEL', 'DEBUG'),
        },
    },
}

KodularExceptionHandler类如下所示：

from copy import copy
import json
import logging
import requests

from django.conf import settings
from django.utils.log import AdminEmailHandler
from django.views.debug import ExceptionReporter

class KodularExceptionHandler(AdminEmailHandler):
    def emit(self, record, *args, **kwargs):
        print("Triggered")
        try:
            request = record.request
            subject = record.getMessage()
        except Exception:
            return

        if record.exc_info:
            exc_info = record.exc_info
        else:
            exc_info = (None, record.getMessage(), None)

        reporter = ExceptionReporter(request, is_email=True, *exc_info)
        message = "%s\n\n%s" % (self.format(copy(record)), reporter.get_traceback_text())

        text = "**Error Level**: *%s* | **Status Code**: `%s`\n\n\n" % (record.levelname, record.status_code)

        url = 'https://api.github.com/repos/'+settings.GITHUB_ORG+'/'+settings.GITHUB_REPO+'/issues'
        session = requests.Session()
        session.auth = (settings.GITHUB_USERNAME, settings.GITHUB_PASSWORD)
        issue = {'title': subject,
                'body': text+message.replace('*', '\*').replace('_', '\_'),
                'labels': ["error"]}
        r = session.post(url, json.dumps(issue))
        if r.status_code != 201:
            return
        github_issue_url = json.loads(r.content)['html_url']



        if record.levelname == "WARNING":
            return

        attachments =  [{
            'title': subject,
            'color': 'danger',
            'actions': [{
                'type': 'button',
                'text': 'Github Issue',
                'url': github_issue_url,
                'style': 'primary',
            }],
            'fields': [{
                "title": "Level",
                "value": record.levelname,
                "short": True
            },{
                "title": "Method",
                "value": request.method if request else 'No Request',
                "short": True
            },{
                "title": "Path",
                "value": request.path if request else 'No Request',
                "short": True
            },{
                "title": "User",
                "value": ( (request.user.username + ' (' + str(request.user.pk) + ')'
                        if request.user.is_authenticated else 'Anonymous' )
                        if request else 'No Request' ),
                "short": True
            },{
                "title": "Status Code",
                "value": record.status_code,
                "short": True
            },{
                "title": "UA",
                "value": ( request.META['HTTP_USER_AGENT']
                        if request and request.META else 'No Request' ),
                "short": False
            },{
                "title": 'GET Params',
                "value": json.dumps(request.GET) if request else 'No Request',
                "short": False
            },{
                "title": "POST Data",
                "value": json.dumps(request.POST) if request else 'No Request',
                "short": False
            }]
        }]

        data = { 'payload': json.dumps({'attachments': attachments}) }
        webhook_url = settings.SLACK_HOOK
        r = requests.post(webhook_url, data=data)

---

当我在settings中设置DEBUG = True时，一切都正常工作：console处理错误（并打印“Reached”），Github问题被创建，Slack通知被发送。你知道吗

你知道吗

但是，如果我设置DEBUG = False，事情就会出错。应该是这样的，控制台输出的信息较少；但是既没有创建Github问题，也没有发送Slack通知。你知道吗

我认为记录器处理器有问题。看起来KodularExceptionHandler没有被触发，因为console不会打印“Reached”，而启用debug时会打印。你知道吗

知道什么会导致调试设置为false时未触发自定义错误报告类吗？

Answer 1

之所以会发生这种情况，是因为这是AdminEmailHandler的默认行为（如配置中所定义），它是KodularExceptionHandler类的父类。由于AdminEmailHandler类在django应用程序加载时启用了django.utils.log.RequireDebugFalse筛选器（https://github.com/django/django/blob/stable/2.2.x/django/utils/log.py#L49），因此该筛选器扩展到从处理程序继承的任何类。你知道吗

您可以使用设置'disable_existing_loggers': True，也可以根本不从AdminEmailHandler继承。如果您查看AdminEmailHandler（https://github.com/django/django/blob/stable/2.2.x/django/utils/log.py#L79）的代码，您会注意到您已经覆盖了它的大部分代码（除了__init__）。也许你可以从logging.Handler继承。你知道吗

Answer 2

我的urls.py文件有点问题。我正在使用自定义错误页处理程序：

from account import views

handler404 = views.error404
handler500 = views.error500

但是，文件views.py如下所示：

from django.shortcuts import render

from account.admin import requires_login

def error404(request, *args, **kwargs):
    return render(request, 'error/404.html')

def error500(request, *args, **kwargs):
    return render(request, 'error/500.html')

我把它改成了

from django.shortcuts import render

from account.admin import requires_login

def error404(request, *args, **kwargs):
    return render(request, 'error/404.html', status=404)

def error500(request, *args, **kwargs):
    return render(request, 'error/500.html', status=500)