/usr/lib/python3/dist-packages/suds/reader.py is in python3-suds 0.7~git20150727.94664dd-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | # This program is free software; you can redistribute it and/or modify it under
# the terms of the (LGPL) GNU Lesser General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Library Lesser General Public License
# for more details at ( http://www.gnu.org/licenses/lgpl.html ).
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# written by: Jeff Ortel ( jortel@redhat.com )
"""
XML document reader classes providing integration with the suds library's
caching system.
"""
import suds.cache
import suds.plugin
import suds.sax.parser
import suds.transport
try:
from hashlib import md5
except ImportError:
# 'hashlib' package added in Python 2.5 so use the now deprecated/removed
# 'md5' package in older Python versions.
from md5 import md5
class Reader(object):
"""
Provides integration with the cache.
@ivar options: An options object.
@type options: I{Options}
"""
def __init__(self, options):
"""
@param options: An options object.
@type options: I{Options}
"""
self.options = options
self.plugins = suds.plugin.PluginContainer(options.plugins)
def mangle(self, name, x):
"""
Mangle the name by hashing the I{name} and appending I{x}.
@return: The mangled name.
@rtype: str
"""
h = md5(name.encode()).hexdigest()
return '%s-%s' % (h, x)
class DefinitionsReader(Reader):
"""
Integrates between the WSDL Definitions object and the object cache.
@ivar fn: A factory function used to create objects not found in the cache.
@type fn: I{Constructor}
"""
def __init__(self, options, fn):
"""
@param options: An options object.
@type options: I{Options}
@param fn: A factory function used to create objects not found in the
cache.
@type fn: I{Constructor}
"""
super(DefinitionsReader, self).__init__(options)
self.fn = fn
def open(self, url):
"""
Open a WSDL schema at the specified I{URL}.
First, the WSDL schema is looked up in the I{object cache}. If not
found, a new one constructed using the I{fn} factory function and the
result is cached for the next open().
@param url: A WSDL URL.
@type url: str.
@return: The WSDL object.
@rtype: I{Definitions}
"""
cache = self.__cache()
id = self.mangle(url, "wsdl")
wsdl = cache.get(id)
if wsdl is None:
wsdl = self.fn(url, self.options)
cache.put(id, wsdl)
else:
# Cached WSDL Definitions objects may have been created with
# different options so we update them here with our current ones.
wsdl.options = self.options
for imp in wsdl.imports:
imp.imported.options = self.options
return wsdl
def __cache(self):
"""
Get the I{object cache}.
@return: The I{cache} when I{cachingpolicy} = B{1}.
@rtype: L{Cache}
"""
if self.options.cachingpolicy == 1:
return self.options.cache
return suds.cache.NoCache()
class DocumentReader(Reader):
"""Integrates between the SAX L{Parser} and the document cache."""
def open(self, url):
"""
Open an XML document at the specified I{URL}.
First, a preparsed document is looked up in the I{object cache}. If not
found, its content is fetched from an external source and parsed using
the SAX parser. The result is cached for the next open().
@param url: A document URL.
@type url: str.
@return: The specified XML document.
@rtype: I{Document}
"""
cache = self.__cache()
id = self.mangle(url, "document")
xml = cache.get(id)
if xml is None:
xml = self.__fetch(url)
cache.put(id, xml)
self.plugins.document.parsed(url=url, document=xml.root())
return xml
def __cache(self):
"""
Get the I{object cache}.
@return: The I{cache} when I{cachingpolicy} = B{0}.
@rtype: L{Cache}
"""
if self.options.cachingpolicy == 0:
return self.options.cache
return suds.cache.NoCache()
def __fetch(self, url):
"""
Fetch document content from an external source.
The document content will first be looked up in the registered document
store, and if not found there, downloaded using the registered
transport system.
Before being returned, the fetched document content first gets
processed by all the registered 'loaded' plugins.
@param url: A document URL.
@type url: str.
@return: A file pointer to the fetched document content.
@rtype: file-like
"""
content = None
store = self.options.documentStore
if store is not None:
content = store.open(url)
if content is None:
request = suds.transport.Request(url)
fp = self.options.transport.open(request)
try:
content = fp.read()
finally:
fp.close()
ctx = self.plugins.document.loaded(url=url, document=content)
content = ctx.document
sax = suds.sax.parser.Parser()
return sax.parse(string=content)
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