wsdl/gw2wsdl.py

   1 #!/usr/bin/python
   2 #
   3 # Sapan Bhatia <sapanb@cs.princeton.edu>
   4 #
   5 # Generates a WSDL for geniwrapper
   6 # Current limitations:
   7 # - Invalid for the following reasons
   8 # - The types are python types, not WSDL types
   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 geni.util.auth import Auth
  20 from geni.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.firstChild.firstChild
  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("wsdl: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", "tns:%s"%t)
  87             element.setAttribute("minOccurs","%d"%min_args)
  88         return "tns:%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         return "sequence"
  93     elif type(arg) == DictType or arg == DictType:
  94         return "dict"
  95     else:
  96         return (name_simple_type(arg))
  97
  98 def name_simple_type(arg_type):
  99     if arg_type == None:
 100         return "none"
 101     if arg_type == DictType:
 102         return "xsd:dict"
 103     elif arg_type == IntType or arg_type == LongType:
 104         return "xsd:int"
 105     elif arg_type == bool:
 106         return "xsd:boolean"
 107     elif arg_type == FloatType:
 108         return "xsd:double"
 109     elif arg_type in StringTypes:
 110         return "xsd:string"
 111     else:
 112        #pdb.set_trace()
 113         raise SoapError, "Cannot handle %s objects" % arg_type
 114
 115 def param_type(arg):
 116     return (name_complex_type(arg))
 117
 118 def add_wsdl_ports_and_bindings (wsdl):
 119     for method in apistub.methods:
 120         # Skip system. methods
 121         if "system." in method:
 122             continue
 123
 124         function = apistub.callable(method) # Commented documentation
 125         #lines = ["// " + line.strip() for line in function.__doc__.strip().split("\n")]
 126         #print "\n".join(lines)
 127         #print
 128
 129
 130         in_el = wsdl.firstChild.appendChild(wsdl.createElement("wsdl:message"))
 131         in_el.setAttribute("name", method + "_in")
 132
 133         for service_name in function.interfaces:
 134             if (services.has_key(service_name)):
 135                 if (not method in services[service_name]):
 136                     services[service_name].append(method)
 137             else:
 138                 services[service_name]=[method]
 139
 140         # Arguments
 141
 142         if (function.accepts):
 143             (min_args, max_args, defaults) = function.args()
 144             for (argname,argtype) in zip(max_args,function.accepts):
 145                 arg_part = in_el.appendChild(wsdl.createElement("wsdl:part"))
 146                 arg_part.setAttribute("name", argname)
 147                 arg_part.setAttribute("type", param_type(argtype))
 148
 149         # Return type
 150         return_type = function.returns
 151         out_el = wsdl.firstChild.appendChild(wsdl.createElement("wsdl:message"))
 152         out_el.setAttribute("name", method + "_out")
 153         ret_part = out_el.appendChild(wsdl.createElement("wsdl:part"))
 154         ret_part.setAttribute("name", "returnvalue")
 155         ret_part.setAttribute("type", param_type(return_type))
 156
 157         # Port connecting arguments with return type
 158
 159         port_el = wsdl.firstChild.appendChild(wsdl.createElement("wsdl:portType"))
 160         port_el.setAttribute("name", method + "_port")
 161
 162         op_el = port_el.appendChild(wsdl.createElement("wsdl:operation"))
 163         op_el.setAttribute("name", method)
 164         inp_el=wsdl.createElement("wsdl:input")).setAttribute("message","tns:" + method + "_in"
 165         inp_el.setAttribute("name",method+"_request")
 166         op_el.appendChild(inp_el)
 167         out_el = op_el.appendChild(wsdl.createElement("wsdl:output")).setAttribute("message","tns:" + method + "_out")
 168         op_el.appendChild(out_el)
 169
 170         # Bindings
 171
 172         bind_el = wsdl.firstChild.appendChild(wsdl.createElement("wsdl:binding"))
 173         bind_el.setAttribute("name", method + "_binding")
 174         bind_el.setAttribute("type", "tns:" + method + "_port")
 175
 176         soap_bind = bind_el.appendChild(wsdl.createElement("soap:binding"))
 177         soap_bind.setAttribute("style", "rpc")
 178         soap_bind.setAttribute("transport","http://schemas.xmlsoap.org/soap/http")
 179
 180
 181         wsdl_op = bind_el.appendChild(wsdl.createElement("wsdl:operation"))
 182         wsdl_op.setAttribute("name", method)
 183         wsdl_op.appendChild(wsdl.createElement("soap:operation")).setAttribute("soapAction",
 184                 "urn:" + method)
 185
 186
 187         wsdl_input = wsdl_op.appendChild(wsdl.createElement("wsdl:input"))
 188         input_soap_body = wsdl_input.appendChild(wsdl.createElement("soap:body"))
 189         input_soap_body.setAttribute("use", "encoded")
 190         input_soap_body.setAttribute("namespace", "urn:" + method)
 191         input_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 192
 193
 194         wsdl_output = wsdl_op.appendChild(wsdl.createElement("wsdl:output"))
 195         output_soap_body = wsdl_output.appendChild(wsdl.createElement("soap:body"))
 196         output_soap_body.setAttribute("use", "encoded")
 197         output_soap_body.setAttribute("namespace", "urn:" + method)
 198         output_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 199
 200
 201 def add_wsdl_service(wsdl):
 202     for service in services.keys():
 203         service_el = wsdl.firstChild.appendChild(wsdl.createElement("wsdl:service"))
 204         service_el.setAttribute("name", service)
 205
 206         for method in services[service]:
 207             name=method
 208             servport_el = service_el.appendChild(wsdl.createElement("wsdl:port"))
 209             servport_el.setAttribute("name", name + "_port")
 210             servport_el.setAttribute("binding", "tns:" + name + "_binding")
 211
 212             soapaddress = servport_el.appendChild(wsdl.createElement("soap:address"))
 213             soapaddress.setAttribute("location", "%s/%s" % (globals.plc_ns,service))
 214
 215
 216 def get_wsdl_definitions():
 217     wsdl_text_header = """
 218         <wsdl:definitions
 219         name="auto_generated"
 220         targetNamespace="%s"
 221         xmlns:xsd="http://www.w3.org/2000/10/XMLSchema"
 222         xmlns:tns="xmlns:%s"
 223         xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 224         xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"/>
 225         """ % (globals.plc_ns,globals.plc_ns)
 226
 227     wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 228
 229     return wsdl
 230
 231
 232 types = get_wsdl_definitions()
 233 types.firstChild.appendChild(types.createElement("wsdl:types"))
 234 wsdl = get_wsdl_definitions()
 235 add_wsdl_ports_and_bindings(wsdl)
 236 wsdl_types = wsdl.importNode(types.firstChild.firstChild, True)
 237 wsdl.firstChild.appendChild(wsdl_types)
 238 add_wsdl_service(wsdl)
 239
 240 xml.dom.ext.PrettyPrint(wsdl)