Paste 实例

最新推荐文章于 2018-12-05 10:36:09 发布

spch2008

最新推荐文章于 2018-12-05 10:36:09 发布

阅读量3.2k

点赞数

分类专栏： Python

本文链接：https://blog.youkuaiyun.com/spch2008/article/details/9005885

版权

Python 专栏收录该内容

18 篇文章

订阅专栏

本文地址：http://blog.youkuaiyun.com/spch2008/article/details/9005885

Paste环境准备

1. 下载paste，放于eclipse目录中

paste库：http://download.youkuaiyun.com/detail/spch2008/5500979

2.目录结构

现在将之前的程序改写，改用Paste进行部署。

LoadApp

'''
Created on 2013-6-2

@author: spch2008
'''

from wsgiref.simple_server import make_server

import routes.middleware
import webob.dec
import webob.exc
from paste.deploy import loadapp

class Controller:
    @webob.dec.wsgify
    def __call__(self, req):
        return webob.Response("Hello World!")


 
class Router(object):
    def __init__(self):
       
        self._mapper = routes.Mapper()
        self._mapper.connect('/spch',  
                        controller=Controller(),  
                        action='index',  
                        conditions={'method': ['GET']})  
        
       
        self._router = routes.middleware.RoutesMiddleware(self._dispatch, self._mapper)
    
    @classmethod
    def app_factory(cls, global_config, **local_config):  
        return cls()
    
    @webob.dec.wsgify
    def __call__(self, req):
        
        return self._router

    @staticmethod
    @webob.dec.wsgify
    def _dispatch(req):
        match = req.environ['wsgiorg.routing_args'][1]
                
        if not match:
            return webob.exc.HTTPNotFound()
        
        app = match['controller']  
        return app
        

if __name__ == "__main__":
      
    app = loadapp('config:C:/paste.ini', name='hello') 
    httpd = make_server('localhost', 8282, app)  
    httpd.serve_forever()

需要在类中添加一个app_factory方法，然后通过loadapp获得实例对象。

paste.ini放于C盘中，文件内容如下：

[app:hello]  
paste.app_factory = MyRoute:Router.app_factory

Composite Applications

def factory(loader, global_conf, **local_conf):
    print (local_conf)
    return Router()

if __name__ == "__main__":
      
    app = loadapp('config:D:/paste.ini', name='hello') 
    httpd = make_server('localhost', 8282, app)  
    httpd.serve_forever()

paste.ini配置内容为

[composite:hello]
use = call:MyRoute:factory
date = 2013
author = spch2008

local_conf输出：{'date': '2013', 'author': 'spch2008'}

另一个例子，但此例没调试成，因为可能由于windows没有egg概念吧（猜想！）

[composite:main]
use = egg:Paste#urlmap
/ = mainapp
/files = staticapp

[app:mainapp]
use = egg:MyApp

[app:staticapp]
use = egg:Paste#static
document_root = /path/to/docroot

main使用Paste的urlmap程序，进行url匹配。
匹配"/"转向mainapp段；“/files”转向staticapp段。

Filter Composition

[app:main]
use = egg:MyEgg
filter-with = printdebug

[filter:printdebug]
use = egg:Paste#printdebug

可以使用pipeline进行filter

[pipeline:main]
pipeline = filter1 filter2 filter3 app

[filter:filter1]