Source

wsgiserialize / wsgiserialize / yamlize.py

# Copyright (c) 2006 L. C. Rees.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1.  Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2.  Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3.  Neither the name of the Portable Site Information Project nor the names
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# this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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import yaml

__all__ = ['WSGIYaml', 'yamlize']    

def yamlize(application):
    '''Decorator for YaML serialization.

    @param application WSGI application.
    ''' 
    return WSGIYaml(application)


class WSGIYaml(object):

    '''WSGI middleware for serializing simple Python objects to YaML.'''
    
    def __init__(self, application):
        '''Initializes the class.

        @param application WSGI application.
        '''        
        self.application = application

    def __call__(self, environ, start_response):
        '''Serializes simple Python objects to YaML.'''
        return [yaml.dump(self.application(environ, start_response))]