python - django数据库查询日志行号

Question

我正在 Django 中记录我的数据库查询以及路径名和行号。

现在我收到这些日志:

07/12/2018 14:25:00 调试 django.db.backends utils **/Users/XXXXX/.idea/lib/python2.7/site-packages/django/db/backends/utils .py:89**
(0.340) 从“元数据”中选择“元数据”.“元名称”、“元数据”.“描述”、“元数据”.“属性”，其中“元数据”.“元名称”=“日期类型”； args=('date_type',)

对于所有查询，我得到相同的路径和行号。有什么方法可以从我的主应用程序中捕获行号，而不是从 utils 中捕获行号。

当前日志记录实现:

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatter': 'color'
        },
    },
    'loggers': {
        'django.db.backends': {
            'handlers': ['console'],
            'level': 'DEBUG',
            'propogate': True,
        }
    }
}

使用 python 2.7 和 django 1.9

Answer 1

来自用户@will-keeling的稍微优化的版本

Django 的日志配置，用于每个数据库请求的输出行号。

注意:如果你想用它进行测试，你需要为测试设置 DEBUG=True How do you set DEBUG to True when running a Django test?

import logging
import traceback
from django.conf import settings


class StackInfoHandler(logging.StreamHandler):
    trim = 5

    def emit(self, record):
        super(StackInfoHandler, self).emit(record)
        trace = traceback.format_stack()
        stack1 = [str(row) for row in trace]
        stack2 = [s for s in stack1 if settings.BASE_DIR in s and 'format_stack' not in s]
        stack3 = [s for s in stack2 if 'test' not in s]
        if not stack3:
            stack3 = stack2  # include test call
        if stack3:
            stack4 = ''.join(stack3[-self.trim:])  # take only last records
            stack5 = f"Stack {self.terminator} {''.join(stack4)}"
            self.stream.write(stack5)
            self.stream.write(self.terminator)
            self.flush()

日志配置(部分)

LOGGING = {
    'handlers': {
        'db-console': {
            'level': 'DEBUG',
            'class': 'settings.local.StackInfoHandler',  # Reference the custom handler
            'formatter': 'simple',
        },
        'loggers': {
            'django.db.backends': {
                'handlers': ['db-console'],
                'level': 'DEBUG',
                'propagate': False
            },
        }
    }
}

这将只显示 Django 代码库中的堆栈跟踪，如下所示

[2020-05-25 17:49:17,977]: (0.000) INSERT INTO `contacts_contactscount` (`user_id`, `date`, `amount`) VALUES (338, '2020-05-25 17:49:17', 7); args=[338, '2020-05-25 17:49:17', 7]
Stack
   File "<project-root>/api/views/contacts.py", line 164, in create
    Contact.objects.filter(pk__in=to_delete).delete()
  File "<project-root>/<folder>/contacts/models.py", line 54, in delete
    create_deletion_log.delay(obj, deleted_timestamp)
  File "<project-root>/<folder>/contacts/tasks.py", line 31, in create_deletion_log
    contact.save()
  File "<project-root>/<folder>/contacts/models.py", line 118, in save
    Contact.objects.contacts_added_hook(self.user)
  File "<project-root>/<folder>/contacts/models.py", line 67, in contacts_added_hook
    current_total = user.profile.contacts_total
  File "<project-root>/<folder>/profile/models.py", line 631, in contacts_total
    ContactsCount.objects.create(user=self.user, amount=count)