python - 如何为 pyramid/pylons 2 编写日志记录中间件？

Question

我想使用 mongodb 或 redis 为 Pyramid/塔中的用户保留日志，但找不到有关创建中间件的文档。我该怎么做？

Answer 1

标准中间件

class LoggerMiddleware(object):
    '''WSGI middleware'''

    def __init__(self, application):

        self.app = application

    def __call__(self, environ, start_response):

        # write logs

        try:
            return self.app(environ, start_response)
        except Exception, e:
            # write logs
            pass
        finally:
            # write logs
            pass

在 Pyramid 中创建应用程序代码:

from paste.httpserver import serve
from pyramid.response import Response
from pyramid.view import view_config

@view_config()
def hello(request):
    return Response('Hello')

if __name__ == '__main__':
    from pyramid.config import Configurator
    config = Configurator()
    config.scan()
    app = config.make_wsgi_app()

    # Put middleware
    app = LoggerMiddleware(app)

    serve(app, host='0.0.0.0')