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dispatch request on wsgi application.

Project description

WebDispatch

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WebDispatch is dispatcher collection for wsgi application. That has no dependency to exsiting frameworks, but works fine with WebOb.

Dispatch and Generate URL

dispatch with url patterns.

example helo application:

>>> from webob.dec import wsgify
>>> @wsgify
... def greeting(request):
...     return "Hello, %s" % request.urlvars['name']

create and configure URL Dispatcher:

>>> from webdispatch import URLDispatcher
>>> dispatcher = URLDispatcher()
>>> dispatcher.add_url('top', '/hello/{name}', greeting)

invoke dispatcher as WSGI Application:

>>> from webob import Request
>>> req = Request.blank('/hello/webdispatch')
>>> res = req.get_response(dispatcher)
>>> res.body
b'Hello, webdispatch'

Wildcard

You can use wildcard after last slash. Pattern with wildcard consumes paths before the wildcard, (and make that new script_name,) and remained paths becomes new path_info.

>>> @wsgify
... def with_pathinfo(request):
...     return "Hello, %s" % request.path_info
>>> dispatcher.add_url('top', '/with_pathinfo/*', with_pathinfo)
>>> req = Request.blank('/with_pathinfo/this/is/pathinfo')
>>> res = req.get_response(dispatcher)
>>> res.body
b'Hello, this/is/pathinfo'

Type Converter

You can specify converter with varname below “:”.

>>> @wsgify
... def add(request):
...     result = request.urlvars['v1'] + request.urlvars['v2']
...     return "result, %d" % result
>>> dispatcher.add_url('add', '/add/{v1:int}/{v2:int}', add)
>>> req = Request.blank('/add/1/2')
>>> res = req.get_response(dispatcher)
>>> res.body
b'result, 3'

default converters are defined as bellow:

DEFAULT_CONVERTERS = {
    'int': int,
    'date': lambda s: datetime.strptime(s, '%Y-%m-%d'),
    'date_ym': lambda s: datetime.strptime(s, '%Y-%m'),
}

Action Dispatch

ActionDispatcher invokes object method with action name from urlvars.

action handler class:

>>> class MyHandler(object):
...     @wsgify
...     def greeting(self, request):
...         return "Hello"

create and configure ActionDispatcher:

>>> from webdispatch import ActionDispatcher
>>> actiondispatcher = ActionDispatcher()
>>> actiondispatcher.register_actionhandler(MyHandler)

add action url with urlvars named action:

>>> dispatcher.add_url('action_dispatch', '/actions/{action}', actiondispatcher)

invoke wsgi appclication.:

>>> req = Request.blank('/actions/greeting')
>>> res = req.get_response(dispatcher)
>>> res.body
b'Hello'

Method Dispatch

dispatch by HTTP METHOD restfully.

use register_app decorator:

>>> from webdispatch import MethodDispatcher
>>> restapp = MethodDispatcher()
>>> @restapp.register('get')
... @wsgify
... def get_hello(request):
...    return "Get Hello"
>>> @restapp.register('post')
... @wsgify
... def post_hello(request):
...    return "Post Hello"

or use registe_app method:

>>> from webdispatch import MethodDispatcher
>>> restapp = MethodDispatcher()
>>> restapp.register_app('get', get_hello)
>>> restapp.register_app('post', post_hello)

Each applications are registered with HTTP Method name.

invoke WSGI application:

>>> req = Request.blank('/')
>>> res = req.get_response(restapp)
>>> res.body
b'Get Hello'

extra_environ

DispatchBase accepts extra_environ argument. Dispatcher adds that argument to wsgi environ by request.

Changes

1.3

  • added decrator API

1.2

  • added extra_environ argument to constructer
  • drop python2.6 tests
  • drop dependency for python2.6
  • added type converter for url vars

1.1

  • added extra_environ method to DispatchBase class
  • added support for Python 3.4

1.0.1

  • include char of “-” to urlmatch words #9

1.0

  • no changes

1.0b4

  • fix response body to bytes

1.0b3

  • fix some bugs

1.0b2

  • fix setup bug

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Filename, size & hash SHA256 hash help File type Python version Upload date
WebDispatch-1.3-py2.py3-none-any.whl (17.9 kB) Copy SHA256 hash SHA256 Wheel 3.4 Nov 18, 2014
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