/usr/lib/python2.7/dist-packages/ZSI/ServiceProxy.py is in python-zsi 2.1~a1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
import weakref, re, os, sys
from ConfigParser import SafeConfigParser as ConfigParser,\
NoSectionError, NoOptionError
from urlparse import urlparse
from ZSI import TC
from ZSI.client import _Binding
from ZSI.generate import commands,containers
from ZSI.schema import GED, GTD
import wstools
#url_to_mod = re.compile(r'<([^ \t\n\r\f\v:]+:)?include\s+location\s*=\s*"(\S+)"')
def _urn_to_module(urn): return '%s_types' %re.sub(_urn_to_module.regex, '_', urn)
_urn_to_module.regex = re.compile(r'[\W]')
class ServiceProxy:
"""A ServiceProxy provides a convenient way to call a remote web
service that is described with WSDL. The proxy exposes methods
that reflect the methods of the remote web service."""
def __init__(self, wsdl, url=None, service=None, port=None,
cachedir=os.path.join(os.path.expanduser('~'), '.zsi_service_proxy_dir'),
asdict=True, lazy=False, pyclass=False, force=False, **kw):
"""
Parameters:
wsdl -- URL of WSDL.
url -- override WSDL SOAP address location
service -- service name or index
port -- port name or index
cachedir -- where to store generated files
asdict -- use dicts, else use generated pyclass
lazy -- use lazy typecode evaluation
pyclass -- use pyclass_type metaclass adds properties, "new_", "set_,
"get_" methods for schema element and attribute declarations.
force -- regenerate all WSDL code, write over cache.
NOTE: all other **kw will be passed to the underlying
ZSI.client._Binding constructor.
"""
self._asdict = asdict
# client._Binding
self._url = url
self._kw = kw
# WSDL
self._wsdl = wstools.WSDLTools.WSDLReader().loadFromURL(wsdl)
self._service = self._wsdl.services[service or 0]
self.__doc__ = self._service.documentation
self._port = self._service.ports[port or 0]
self._name = self._service.name
self._methods = {}
self._cachedir = cachedir
self._lazy = lazy
self._pyclass = pyclass
self._force = force
# Set up rpc methods for service/port
port = self._port
binding = port.getBinding()
portType = binding.getPortType()
for port in self._service.ports:
for item in port.getPortType().operations:
try:
callinfo = wstools.WSDLTools.callInfoFromWSDL(port, item.name)
except:
# ignore non soap-1.1 bindings
continue
method = MethodProxy(self, callinfo)
setattr(self, item.name, method)
self._methods.setdefault(item.name, []).append(method)
self._mod = self._load(wsdl)
def _load(self, location):
"""
location -- URL or file location
isxsd -- is this a xsd file?
"""
cachedir = self._cachedir
# wsdl2py: deal with XML Schema
if not os.path.isdir(cachedir): os.mkdir(cachedir)
file = os.path.join(cachedir, '.cache')
section = 'TYPES'
cp = ConfigParser()
try:
cp.readfp(open(file, 'r'))
except IOError:
del cp; cp = None
option = location.replace(':', '-') # colons seem to screw up option
if (not self._force and cp is not None and cp.has_section(section) and
cp.has_option(section, option)):
types = cp.get(section, option)
else:
# dont do anything to anames
if not self._pyclass:
containers.ContainerBase.func_aname = lambda instnc,n: str(n)
args = ['-o', cachedir, location]
if self._lazy: args.insert(0, '-l')
if self._pyclass: args.insert(0, '-b')
files = commands.wsdl2py(args)
if cp is None: cp = ConfigParser()
if not cp.has_section(section): cp.add_section(section)
types = filter(lambda f: f.endswith('_types.py'), files)[0]
cp.set(section, option, types)
cp.write(open(file, 'w'))
if os.path.abspath(cachedir) not in sys.path:
sys.path.append(os.path.abspath(cachedir))
mod = os.path.split(types)[-1].rstrip('.py')
return __import__(mod)
def _load_schema(self, location, xml=None):
"""
location -- location of schema, also used as a key
xml -- optional string representation of schema
"""
cachedir = self._cachedir
# wsdl2py: deal with XML Schema
if not os.path.isdir(cachedir): os.mkdir(cachedir)
file = os.path.join(cachedir, '.cache')
section = 'TYPES'
cp = ConfigParser()
try:
cp.readfp(open(file, 'r'))
except IOError:
del cp; cp = None
option = location.replace(':', '-') # colons seem to screw up option
if (cp is not None and cp.has_section(section) and
cp.has_option(section, option)):
types = cp.get(section, option)
else:
# dont do anything to anames
if not self._pyclass:
containers.ContainerBase.func_aname = lambda instnc,n: str(n)
from ZSI.wstools import XMLSchema
reader = XMLSchema.SchemaReader(base_url=location)
if xml is not None and isinstance(xml, basestring):
schema = reader.loadFromString(xml)
elif xml is not None:
raise RuntimeError, 'Unsupported: XML must be string'
elif not os.path.isfile(location):
schema = reader.loadFromURL(location)
else:
schema = reader.reader.loadFromFile(location)
# TODO: change this to keyword list
class options:
output_dir = cachedir
schema = True
simple_naming = False
address = False
lazy = self._lazy
complexType = self._pyclass
schema.location = location
files = commands._wsdl2py(options, schema)
if cp is None: cp = ConfigParser()
if not cp.has_section(section): cp.add_section(section)
types = filter(lambda f: f.endswith('_types.py'), files)[0]
cp.set(section, option, types)
cp.write(open(file, 'w'))
if os.path.abspath(cachedir) not in sys.path:
sys.path.append(os.path.abspath(cachedir))
mod = os.path.split(types)[-1].rstrip('.py')
return __import__(mod)
def _call(self, name, soapheaders):
"""return the Call to the named remote web service method.
closure used to prevent multiple values for name and soapheaders
parameters
"""
def call_closure(*args, **kwargs):
"""Call the named remote web service method."""
if len(args) and len(kwargs):
raise TypeError, 'Use positional or keyword argument only.'
if len(args) > 0:
raise TypeError, 'Not supporting SOAPENC:Arrays or XSD:List'
if len(kwargs):
args = kwargs
callinfo = getattr(self, name).callinfo
# go through the list of defined methods, and look for the one with
# the same number of arguments as what was passed. this is a weak
# check that should probably be improved in the future to check the
# types of the arguments to allow for polymorphism
for method in self._methods[name]:
if len(method.callinfo.inparams) == len(kwargs):
callinfo = method.callinfo
binding = _Binding(url=self._url or callinfo.location,
soapaction=callinfo.soapAction,
**self._kw)
kw = dict(unique=True)
if callinfo.use == 'encoded':
kw['unique'] = False
if callinfo.style == 'rpc':
request = TC.Struct(None, ofwhat=[],
pname=(callinfo.namespace, name), **kw)
response = TC.Struct(None, ofwhat=[],
pname=(callinfo.namespace, name+"Response"), **kw)
if len(callinfo.getInParameters()) != len(args):
raise RuntimeError('expecting "%s" parts, got %s' %(
str(callinfo.getInParameters(), str(args))))
for msg,pms in ((request,callinfo.getInParameters()),
(response,callinfo.getOutParameters())):
msg.ofwhat = []
for part in pms:
klass = GTD(*part.type)
if klass is None:
if part.type:
klass = filter(lambda gt: part.type==gt.type,TC.TYPES)
if len(klass) == 0:
klass = filter(lambda gt: part.type[1]==gt.type[1],TC.TYPES)
if not len(klass):klass = [TC.Any]
if len(klass) > 1: #Enumerations, XMLString, etc
klass = filter(lambda i: i.__dict__.has_key('type'), klass)
klass = klass[0]
else:
klass = TC.Any
msg.ofwhat.append(klass(part.name))
msg.ofwhat = tuple(msg.ofwhat)
if not args: args = {}
else:
# Grab <part element> attribute
ipart,opart = callinfo.getInParameters(),callinfo.getOutParameters()
if ( len(ipart) != 1 or not ipart[0].element_type or
ipart[0].type is None ):
raise RuntimeError, 'Bad Input Message "%s"' %callinfo.name
if ( len(opart) not in (0,1) or not opart[0].element_type or
opart[0].type is None ):
raise RuntimeError, 'Bad Output Message "%s"' %callinfo.name
# if ( len(args) > 1 ):
# raise RuntimeError, 'Message has only one part: %s' %str(args)
ipart = ipart[0]
request,response = GED(*ipart.type),None
if opart: response = GED(*opart[0].type)
msg = args
if self._asdict:
if not msg: msg = dict()
self._nullpyclass(request)
elif request.pyclass is not None:
if type(args) is dict:
msg = request.pyclass()
msg.__dict__.update(args)
elif type(args) is list and len(args) == 1:
msg = request.pyclass(args[0])
else:
msg = request.pyclass()
binding.Send(None, None, msg,
requesttypecode=request,
soapheaders=soapheaders,
encodingStyle=callinfo.encodingStyle)
if response is None:
return None
if self._asdict: self._nullpyclass(response)
return binding.Receive(replytype=response,
encodingStyle=callinfo.encodingStyle)
return call_closure
def _nullpyclass(cls, typecode):
typecode.pyclass = None
if not hasattr(typecode, 'ofwhat'): return
if type(typecode.ofwhat) not in (list,tuple): #Array
cls._nullpyclass(typecode.ofwhat)
else: #Struct/ComplexType
for i in typecode.ofwhat: cls._nullpyclass(i)
_nullpyclass = classmethod(_nullpyclass)
class MethodProxy:
""" """
def __init__(self, parent, callinfo):
self.__name__ = callinfo.methodName
self.__doc__ = callinfo.documentation
self.callinfo = callinfo
self.parent = weakref.ref(parent)
self.soapheaders = []
def __call__(self, *args, **kwargs):
return self.parent()._call(self.__name__, self.soapheaders)(*args, **kwargs)
def add_headers(self, **headers):
"""packing dicts into typecode pyclass, may fail if typecodes are
used in the body (when asdict=True)
"""
class _holder: pass
def _remap(pyobj, **d):
pyobj.__dict__ = d
for k,v in pyobj.__dict__.items():
if type(v) is not dict: continue
pyobj.__dict__[k] = p = _holder()
_remap(p, **v)
for k,v in headers.items():
h = filter(lambda i: k in i.type, self.callinfo.inheaders)[0]
if h.element_type != 1:
raise RuntimeError, 'not implemented'
typecode = GED(*h.type)
if typecode is None:
raise RuntimeError, 'no matching element for %s' %str(h.type)
pyclass = typecode.pyclass
if pyclass is None:
raise RuntimeError, 'no pyclass for typecode %s' %str(h.type)
if type(v) is not dict:
pyobj = pyclass(v)
else:
pyobj = pyclass()
_remap(pyobj, **v)
self.soapheaders.append(pyobj)
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