wsdl/gw2wsdl.py

   1 #!/usr/bin/python
   2 #
   3 # Sapan Bhatia <sapanb@cs.princeton.edu>
   4 #
   5 # This code is under preliminary development. I am going to clean it up
   6 # once it is tested to work.
   7 # Generates a WSDL for geniwrapper
   8
   9
  10 import os, sys
  11 import time
  12 import pdb
  13 import xml.dom.minidom
  14 import xml.dom.ext
  15 import globals
  16 import apistub
  17 from types import *
  18
  19 from sfa.util.auth import Auth
  20 from sfa.util.parameter import Parameter,Mixed
  21
  22 complex_types = {}
  23 services = {}
  24
  25 num_types = 0
  26
  27 class SoapError(Exception):
  28      def __init__(self, value):
  29          self.value = value
  30      def __str__(self):
  31          return repr(self.value)
  32 try:
  33     set
  34 except NameError:
  35     from sets import Set
  36     set = Set
  37
  38 def fold_complex_type_names(acc, arg):
  39     name = arg.doc
  40     if (type(acc)==list):
  41         acc.append(name)
  42     else:
  43         python_is_braindead = acc.doc
  44         acc = [python_is_braindead,name]
  45     return acc
  46
  47
  48 def fold_complex_type(acc, arg):
  49     global complex_types
  50     name = name_complex_type(arg)
  51     complex_types[arg]=name
  52     if (type(acc)==list):
  53         acc.append(name)
  54     else:
  55         python_is_braindead = name_complex_type(acc)
  56         acc = [python_is_braindead,name]
  57     return acc
  58
  59 def name_complex_type(arg):
  60     global num_types
  61     global types
  62
  63     #if (complex_types.has_key(arg)):
  64     #    return complex_types[arg]
  65
  66     types_section = types.getElementsByTagName("xsd:schema")[0]
  67
  68     if (isinstance(arg, Mixed)):
  69         inner_types = reduce(fold_complex_type, arg)
  70         inner_names = reduce(fold_complex_type_names, arg)
  71         if (inner_types[-1]=="none"):
  72             inner_types=inner_types[:-1]
  73             min_args = 0
  74         else:
  75             min_args = 1
  76
  77         num_types=num_types+1
  78         type_name = "Type%d"%num_types
  79         complex_type = types_section.appendChild(types.createElement("xsd:complexType"))
  80         complex_type.setAttribute("name", type_name)
  81
  82         choice = complex_type.appendChild(types.createElement("xsd:choice"))
  83         for n,t in zip(inner_names,inner_types):
  84             element = choice.appendChild(types.createElement("element"))
  85             element.setAttribute("name", n)
  86             element.setAttribute("type", "%s"%t)
  87             element.setAttribute("minOccurs","%d"%min_args)
  88         return "xsdl:%s"%type_name
  89     elif (isinstance(arg, Parameter)):
  90         return (name_simple_type(arg.type))
  91     elif type(arg) == ListType or type(arg) == TupleType:
  92         inner_type = name_complex_type(arg[0])
  93         num_types=num_types+1
  94         type_name = "Type%d"%num_types
  95         complex_type = types_section.appendChild(types.createElement("xsd:complexType"))
  96         complex_type.setAttribute("name", type_name)
  97         complex_content = complex_type.appendChild(types.createElement("xsd:complexContent"))
  98         restriction = complex_content.appendChild(types.createElement("restriction"))
  99         restriction.setAttribute("base","soapenc:Array")
 100         attribute = restriction.appendChild(types.createElement("attribute"))
 101         attribute.setAttribute("ref","soapenc:arrayType")
 102         attribute.setAttribute("wsdl:arrayType",inner_type+"[]")
 103         return "xsdl:%s"%type_name
 104
 105     elif type(arg) == DictType or arg == DictType or issubclass(arg, dict):
 106         num_types=num_types+1
 107         type_name = "Type%d"%num_types
 108         complex_type = types_section.appendChild(types.createElement("xsd:complexType"))
 109         complex_type.setAttribute("name", type_name)
 110         complex_content = complex_type.appendChild(types.createElement("xsd:sequence"))
 111
 112         for k in arg.fields:
 113             inner_type = name_complex_type(arg.fields[k])
 114             element=complex_content.appendChild(types.createElement("xsd:element"))
 115             element.setAttribute("name",k)
 116             element.setAttribute("type",inner_type)
 117
 118         return "xsdl:%s"%type_name
 119
 120     else:
 121         return (name_simple_type(arg))
 122
 123 def name_simple_type(arg_type):
 124     if arg_type == None:
 125         return "none"
 126     if arg_type == DictType:
 127         return "xsd:anyType"
 128     elif arg_type == IntType or arg_type == LongType:
 129         return "xsd:int"
 130     elif arg_type == bool:
 131         return "xsd:boolean"
 132     elif arg_type == FloatType:
 133         return "xsd:double"
 134     elif arg_type in StringTypes:
 135         return "xsd:string"
 136     else:
 137        pdb.set_trace()
 138        raise SoapError, "Cannot handle %s objects" % arg_type
 139
 140 def param_type(arg):
 141     return (name_complex_type(arg))
 142
 143 def add_wsdl_ports_and_bindings (wsdl):
 144     for method in apistub.methods:
 145         # Skip system. methods
 146         if "system." in method:
 147             continue
 148
 149         function = apistub.callable(method) # Commented documentation
 150         #lines = ["// " + line.strip() for line in function.__doc__.strip().split("\n")]
 151         #print "\n".join(lines)
 152         #print
 153
 154
 155         in_el = wsdl.firstChild.appendChild(wsdl.createElement("message"))
 156         in_el.setAttribute("name", method + "_in")
 157
 158         for service_name in function.interfaces:
 159             if (services.has_key(service_name)):
 160                 if (not method in services[service_name]):
 161                     services[service_name].append(method)
 162             else:
 163                 services[service_name]=[method]
 164
 165         # Arguments
 166
 167         if (function.accepts):
 168             (min_args, max_args, defaults) = function.args()
 169             for (argname,argtype) in zip(max_args,function.accepts):
 170                 arg_part = in_el.appendChild(wsdl.createElement("part"))
 171                 arg_part.setAttribute("name", argname)
 172                 arg_part.setAttribute("type", param_type(argtype))
 173
 174         # Return type
 175         return_type = function.returns
 176         out_el = wsdl.firstChild.appendChild(wsdl.createElement("message"))
 177         out_el.setAttribute("name", method + "_out")
 178         ret_part = out_el.appendChild(wsdl.createElement("part"))
 179         ret_part.setAttribute("name", "returnvalue")
 180         ret_part.setAttribute("type", param_type(return_type))
 181
 182         # Port connecting arguments with return type
 183
 184         port_el = wsdl.firstChild.appendChild(wsdl.createElement("portType"))
 185         port_el.setAttribute("name", method + "_port")
 186
 187         op_el = port_el.appendChild(wsdl.createElement("operation"))
 188         op_el.setAttribute("name", method)
 189         inp_el=wsdl.createElement("input")
 190         inp_el.setAttribute("message","tns:" + method + "_in")
 191         inp_el.setAttribute("name",method+"_request")
 192         op_el.appendChild(inp_el)
 193         out_el = wsdl.createElement("output")
 194         out_el.setAttribute("message","tns:" + method + "_out")
 195         out_el.setAttribute("name",method+"_response")
 196         op_el.appendChild(out_el)
 197
 198         # Bindings
 199
 200         bind_el = wsdl.firstChild.appendChild(wsdl.createElement("binding"))
 201         bind_el.setAttribute("name", method + "_binding")
 202         bind_el.setAttribute("type", "tns:" + method + "_port")
 203
 204         soap_bind = bind_el.appendChild(wsdl.createElement("soap:binding"))
 205         soap_bind.setAttribute("style", "rpc")
 206         soap_bind.setAttribute("transport","http://schemas.xmlsoap.org/soap/http")
 207
 208
 209         wsdl_op = bind_el.appendChild(wsdl.createElement("operation"))
 210         wsdl_op.setAttribute("name", method)
 211         wsdl_op.appendChild(wsdl.createElement("soap:operation")).setAttribute("soapAction",
 212                 "urn:" + method)
 213
 214
 215         wsdl_input = wsdl_op.appendChild(wsdl.createElement("input"))
 216         input_soap_body = wsdl_input.appendChild(wsdl.createElement("soap:body"))
 217         input_soap_body.setAttribute("use", "encoded")
 218         input_soap_body.setAttribute("namespace", "urn:" + method)
 219         input_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 220
 221
 222         wsdl_output = wsdl_op.appendChild(wsdl.createElement("output"))
 223         output_soap_body = wsdl_output.appendChild(wsdl.createElement("soap:body"))
 224         output_soap_body.setAttribute("use", "encoded")
 225         output_soap_body.setAttribute("namespace", "urn:" + method)
 226         output_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 227
 228
 229 def add_wsdl_service(wsdl):
 230     for service in services.keys():
 231         service_el = wsdl.firstChild.appendChild(wsdl.createElement("service"))
 232         service_el.setAttribute("name", service)
 233
 234         for method in services[service]:
 235             name=method
 236             servport_el = service_el.appendChild(wsdl.createElement("port"))
 237             servport_el.setAttribute("name", name + "_port")
 238             servport_el.setAttribute("binding", "tns:" + name + "_binding")
 239
 240             soapaddress = servport_el.appendChild(wsdl.createElement("soap:address"))
 241             soapaddress.setAttribute("location", "%s/%s" % (globals.plc_ns,service))
 242
 243
 244 def get_wsdl_definitions():
 245     wsdl_text_header = """
 246         <wsdl:definitions
 247         name="geniwrapper_autogenerated"
 248         targetNamespace="%s/2009/06/sfa.wsdl"
 249         xmlns="http://schemas.xmlsoap.org/wsdl/"
 250         xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 251         xmlns:xsdl="http://%s/2009/06/schema"
 252         xmlns:tns="%s/2009/06/sfa.wsdl"
 253         xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 254         xmlns:soapenc="http://schemas.xmlsoap.org/wsdl/soap/encoding"
 255         xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"/>
 256         """ % (globals.plc_ns,globals.plc_ns,globals.plc_ns)
 257
 258     wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 259
 260     return wsdl
 261
 262 def get_wsdl_definitions_and_types():
 263     wsdl_text_header = """
 264     <wsdl:definitions
 265         name="geniwrapper_autogenerated"
 266         targetNamespace="%s/2009/06/sfa.wsdl"
 267         xmlns="http://schemas.xmlsoap.org/wsdl/"
 268         xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 269         xmlns:xsdl="http://%s/2009/06/schema"
 270         xmlns:tns="%s/2009/06/sfa.wsdl"
 271         xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 272         xmlns:soapenc="http://schemas.xmlsoap.org/wsdl/soap/encoding"
 273         xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
 274         <types>
 275             <xsd:schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="%s/2009/06/schema"/>
 276         </types>
 277     </wsdl:definitions> """ % (globals.plc_ns, globals.plc_ns, globals.plc_ns, globals.plc_ns)
 278     wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 279     return wsdl
 280
 281
 282 types = get_wsdl_definitions_and_types()
 283
 284 wsdl = get_wsdl_definitions()
 285 add_wsdl_ports_and_bindings(wsdl)
 286 wsdl_types = wsdl.importNode(types.getElementsByTagName("types")[0], True)
 287 wsdl.firstChild.appendChild(wsdl_types)
 288 add_wsdl_service(wsdl)
 289
 290 xml.dom.ext.PrettyPrint(wsdl)