wsdl/gw2wsdl.py

   1 #!/usr/bin/python
   2 #
   3 # Sapan Bhatia <sapanb@cs.princeton.edu>
   4 #
   5 # Generates a WSDL for geniwrapper
   6
   7
   8 import os, sys
   9 import time
  10 import pdb
  11 import xml.dom.minidom
  12 import xml.dom.ext
  13 import apistub
  14 import inspect
  15
  16 import globals
  17
  18 from types import *
  19
  20 from sfa.trust.auth import Auth
  21 from sfa.util.parameter import Parameter,Mixed
  22
  23 complex_types = {}
  24 services = {}
  25
  26 num_types = 0
  27
  28 class SoapError(Exception):
  29      def __init__(self, value):
  30          self.value = value
  31      def __str__(self):
  32          return repr(self.value)
  33 try:
  34     set
  35 except NameError:
  36     from sets import Set
  37     set = Set
  38
  39 def fold_complex_type_names(acc, arg):
  40     name = arg.doc
  41     if (type(acc)==list):
  42         acc.append(name)
  43     else:
  44         python_is_braindead = acc.doc
  45         acc = [python_is_braindead,name]
  46     return acc
  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     types_section = types.getElementsByTagName("xsd:schema")[0]
  64
  65     #pdb.set_trace()
  66     if (isinstance(arg, Mixed)):
  67         inner_types = reduce(fold_complex_type, arg)
  68         inner_names = reduce(fold_complex_type_names, arg)
  69         if (inner_types[-1]=="none"):
  70             inner_types=inner_types[:-1]
  71             min_args = 0
  72         else:
  73             min_args = 1
  74
  75         num_types=num_types+1
  76         type_name = "Type%d"%num_types
  77         complex_type = types_section.appendChild(types.createElement("xsd:complexType"))
  78         complex_type.setAttribute("name", type_name)
  79
  80         choice = complex_type.appendChild(types.createElement("xsd:choice"))
  81         for n,t in zip(inner_names,inner_types):
  82             element = choice.appendChild(types.createElement("element"))
  83             element.setAttribute("name", n)
  84             element.setAttribute("type", "%s"%t)
  85             element.setAttribute("minOccurs","%d"%min_args)
  86         return "xsdl:%s"%type_name
  87     elif (isinstance(arg, Parameter)):
  88         return (name_simple_type(arg.type))
  89     elif type(arg) == ListType or type(arg) == TupleType:
  90         inner_type = name_complex_type(arg[0])
  91         num_types=num_types+1
  92         type_name = "Type%d"%num_types
  93         complex_type = types_section.appendChild(types.createElement("xsd:simpleType"))
  94         complex_type.setAttribute("name", type_name)
  95         complex_content = complex_type.appendChild(types.createElement("xsd:list"))
  96         complex_content.setAttribute("itemType",inner_type)
  97         return "xsdl:%s"%type_name
  98     elif type(arg) == DictType or arg == DictType or (inspect.isclass(arg) and issubclass(arg, dict)):
  99         num_types=num_types+1
 100         type_name = "Type%d"%num_types
 101         complex_type = types_section.appendChild(types.createElement("xsd:complexType"))
 102         complex_type.setAttribute("name", type_name)
 103         complex_content = complex_type.appendChild(types.createElement("xsd:sequence"))
 104
 105         for k in arg.fields:
 106             inner_type = name_complex_type(arg.fields[k])
 107             element=complex_content.appendChild(types.createElement("xsd:element"))
 108             element.setAttribute("name",k)
 109             element.setAttribute("type",inner_type)
 110
 111         return "xsdl:%s"%type_name
 112     else:
 113         return (name_simple_type(arg))
 114
 115 def name_simple_type(arg_type):
 116     # A Parameter is reported as an instance, even though it is serialized as a type <>
 117     if type(arg_type) == InstanceType:
 118         return (name_simple_type(arg_type.type))
 119     if arg_type == None:
 120         return "none"
 121     if arg_type == DictType:
 122         return "xsd:anyType"
 123     elif arg_type == IntType or arg_type == LongType:
 124         return "xsd:int"
 125     elif arg_type == bool:
 126         return "xsd:boolean"
 127     elif arg_type == FloatType:
 128         return "xsd:double"
 129     elif arg_type in StringTypes:
 130         return "xsd:string"
 131     else:
 132        pdb.set_trace()
 133        raise SoapError, "Cannot handle %s objects" % arg_type
 134
 135 def param_type(arg):
 136     return (name_complex_type(arg))
 137
 138 def add_wsdl_ports_and_bindings (wsdl):
 139     for method in apistub.methods:
 140         print "Processing method %s"%method
 141
 142         # Skip system. methods
 143         if "system." in method:
 144             continue
 145
 146         function = apistub.callable(method) # Commented documentation
 147         #lines = ["// " + line.strip() for line in function.__doc__.strip().split("\n")]
 148         #print "\n".join(lines)
 149         #print
 150
 151
 152         in_el = wsdl.firstChild.appendChild(wsdl.createElement("message"))
 153         in_el.setAttribute("name", method + "_in")
 154
 155         for service_name in function.interfaces:
 156             if (services.has_key(service_name)):
 157                 if (not method in services[service_name]):
 158                     services[service_name].append(method)
 159             else:
 160                 services[service_name]=[method]
 161
 162         # Arguments
 163
 164         if (function.accepts):
 165             (min_args, max_args, defaults) = function.args()
 166             for (argname,argtype) in zip(max_args,function.accepts):
 167                 arg_part = in_el.appendChild(wsdl.createElement("part"))
 168                 arg_part.setAttribute("name", argname)
 169                 arg_part.setAttribute("type", param_type(argtype))
 170
 171         # Return type
 172         return_type = function.returns
 173         out_el = wsdl.firstChild.appendChild(wsdl.createElement("message"))
 174         out_el.setAttribute("name", method + "_out")
 175         ret_part = out_el.appendChild(wsdl.createElement("part"))
 176         ret_part.setAttribute("name", "returnvalue")
 177         ret_part.setAttribute("type", param_type(return_type))
 178
 179         # Port connecting arguments with return type
 180
 181         port_el = wsdl.firstChild.appendChild(wsdl.createElement("portType"))
 182         port_el.setAttribute("name", method + "_port")
 183
 184         op_el = port_el.appendChild(wsdl.createElement("operation"))
 185         op_el.setAttribute("name", method)
 186         inp_el=wsdl.createElement("input")
 187         inp_el.setAttribute("message","tns:" + method + "_in")
 188         inp_el.setAttribute("name",method+"_request")
 189         op_el.appendChild(inp_el)
 190         out_el = wsdl.createElement("output")
 191         out_el.setAttribute("message","tns:" + method + "_out")
 192         out_el.setAttribute("name",method+"_response")
 193         op_el.appendChild(out_el)
 194
 195         # Bindings
 196
 197         bind_el = wsdl.firstChild.appendChild(wsdl.createElement("binding"))
 198         bind_el.setAttribute("name", method + "_binding")
 199         bind_el.setAttribute("type", "tns:" + method + "_port")
 200
 201         soap_bind = bind_el.appendChild(wsdl.createElement("soap:binding"))
 202         soap_bind.setAttribute("style", "rpc")
 203         soap_bind.setAttribute("transport","http://schemas.xmlsoap.org/soap/http")
 204
 205
 206         wsdl_op = bind_el.appendChild(wsdl.createElement("operation"))
 207         wsdl_op.setAttribute("name", method)
 208         wsdl_op.appendChild(wsdl.createElement("soap:operation")).setAttribute("soapAction",
 209                 "urn:" + method)
 210
 211
 212         wsdl_input = wsdl_op.appendChild(wsdl.createElement("input"))
 213         input_soap_body = wsdl_input.appendChild(wsdl.createElement("soap:body"))
 214         input_soap_body.setAttribute("use", "encoded")
 215         input_soap_body.setAttribute("namespace", "urn:" + method)
 216         input_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 217
 218
 219         wsdl_output = wsdl_op.appendChild(wsdl.createElement("output"))
 220         output_soap_body = wsdl_output.appendChild(wsdl.createElement("soap:body"))
 221         output_soap_body.setAttribute("use", "encoded")
 222         output_soap_body.setAttribute("namespace", "urn:" + method)
 223         output_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 224
 225
 226 def add_wsdl_service(wsdl):
 227     for service in services.keys():
 228         service_el = wsdl.firstChild.appendChild(wsdl.createElement("service"))
 229         service_el.setAttribute("name", service)
 230
 231         for method in services[service]:
 232             name=method
 233             servport_el = service_el.appendChild(wsdl.createElement("port"))
 234             servport_el.setAttribute("name", name + "_port")
 235             servport_el.setAttribute("binding", "tns:" + name + "_binding")
 236
 237             soapaddress = servport_el.appendChild(wsdl.createElement("soap:address"))
 238             soapaddress.setAttribute("location", "%s/%s" % (globals.plc_ns,service))
 239
 240
 241 def get_wsdl_definitions():
 242     wsdl_text_header = """
 243         <wsdl:definitions
 244         name="geniwrapper_autogenerated"
 245         targetNamespace="%s/2009/07/sfa.wsdl"
 246         xmlns="http://schemas.xmlsoap.org/wsdl/"
 247         xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 248         xmlns:xsdl="%s/2009/07/schema"
 249         xmlns:tns="%s/2009/07/sfa.wsdl"
 250         xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 251         xmlns:soapenc="http://schemas.xmlsoap.org/wsdl/soap/encoding"
 252         xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"/>
 253         """ % (globals.plc_ns,globals.plc_ns,globals.plc_ns)
 254
 255     wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 256
 257     return wsdl
 258
 259 def get_wsdl_definitions_and_types():
 260     wsdl_text_header = """
 261     <wsdl:definitions
 262         name="geniwrapper_autogenerated"
 263         targetNamespace="%s/2009/07/sfa.wsdl"
 264         xmlns="http://schemas.xmlsoap.org/wsdl/"
 265         xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 266         xmlns:xsdl="%s/2009/07/schema"
 267         xmlns:tns="%s/2009/07/sfa.wsdl"
 268         xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 269         xmlns:soapenc="http://schemas.xmlsoap.org/wsdl/soap/encoding"
 270         xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
 271         <types>
 272             <xsd:schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="%s/2009/07/schema"/>
 273         </types>
 274     </wsdl:definitions> """ % (globals.plc_ns, globals.plc_ns, globals.plc_ns, globals.plc_ns)
 275     wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 276     return wsdl
 277
 278
 279 types = get_wsdl_definitions_and_types()
 280
 281 wsdl = get_wsdl_definitions()
 282 add_wsdl_ports_and_bindings(wsdl)
 283 wsdl_types = wsdl.importNode(types.getElementsByTagName("types")[0], True)
 284 wsdl.firstChild.appendChild(wsdl_types)
 285 add_wsdl_service(wsdl)
 286
 287 xml.dom.ext.PrettyPrint(wsdl)