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103 lines
3.3 KiB
Python
103 lines
3.3 KiB
Python
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"""Parse web services description language to get SOAP methods.
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Rudimentary support."""
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ident = '$Id$'
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from version import __version__
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import wstools
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from Client import SOAPProxy, SOAPAddress
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from Config import Config
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import urllib
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class Proxy:
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"""WSDL Proxy.
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SOAPProxy wrapper that parses method names, namespaces, soap actions from
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the web service description language (WSDL) file passed into the
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constructor. The WSDL reference can be passed in as a stream, an url, a
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file name, or a string.
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Loads info into self.methods, a dictionary with methodname keys and values
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of WSDLTools.SOAPCallinfo.
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For example,
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url = 'http://www.xmethods.org/sd/2001/TemperatureService.wsdl'
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wsdl = WSDL.Proxy(url)
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print len(wsdl.methods) # 1
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print wsdl.methods.keys() # getTemp
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See WSDLTools.SOAPCallinfo for more info on each method's attributes.
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"""
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def __init__(self, wsdlsource, config=Config, **kw ):
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reader = wstools.WSDLTools.WSDLReader()
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self.wsdl = None
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# From Mark Pilgrim's "Dive Into Python" toolkit.py--open anything.
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if self.wsdl is None and hasattr(wsdlsource, "read"):
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#print 'stream'
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self.wsdl = reader.loadFromStream(wsdlsource)
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# NOT TESTED (as of April 17, 2003)
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#if self.wsdl is None and wsdlsource == '-':
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# import sys
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# self.wsdl = reader.loadFromStream(sys.stdin)
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# print 'stdin'
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if self.wsdl is None:
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try:
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file(wsdlsource)
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self.wsdl = reader.loadFromFile(wsdlsource)
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#print 'file'
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except (IOError, OSError):
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pass
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if self.wsdl is None:
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try:
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stream = urllib.urlopen(wsdlsource)
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self.wsdl = reader.loadFromStream(stream, wsdlsource)
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except (IOError, OSError): pass
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if self.wsdl is None:
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import StringIO
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self.wsdl = reader.loadFromString(str(wsdlsource))
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#print 'string'
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# Package wsdl info as a dictionary of remote methods, with method name
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# as key (based on ServiceProxy.__init__ in ZSI library).
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self.methods = {}
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service = self.wsdl.services[0]
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port = service.ports[0]
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name = service.name
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binding = port.getBinding()
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portType = binding.getPortType()
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for operation in portType.operations:
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callinfo = wstools.WSDLTools.callInfoFromWSDL(port, operation.name)
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self.methods[callinfo.methodName] = callinfo
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self.soapproxy = SOAPProxy('http://localhost/dummy.webservice',
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config=config, **kw)
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def __str__(self):
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s = ''
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for method in self.methods.values():
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s += str(method)
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return s
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def __getattr__(self, name):
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"""Set up environment then let parent class handle call.
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Raises AttributeError is method name is not found."""
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if not self.methods.has_key(name): raise AttributeError, name
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callinfo = self.methods[name]
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self.soapproxy.proxy = SOAPAddress(callinfo.location)
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self.soapproxy.namespace = callinfo.namespace
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self.soapproxy.soapaction = callinfo.soapAction
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return self.soapproxy.__getattr__(name)
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