假设我们要添加一个我们自己的Middleware,用来记录每次请求的日志
下面就是一个符合规范的Middleware, 构造函数中接受一个WSGI APP, __call__返回一个WSGI APP.
复制代码 代码如下:
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
在项目的__init__.py的main函数中， 在config.make_wsgi_app上包上一层我们的Middleware:
复制代码 代码如下:
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')
