wsdl/sfa2wsdl.py

   1 #!/usr/bin/python
   2 #
   3 # Sapan Bhatia <sapanb@cs.princeton.edu>
   4 #
   5 # Generates a WSDL for sfa
   6
   7
   8 import os, sys
   9 import time
  10 import pdb
  11 import xml.dom.minidom
  12 import apistub
  13 import inspect
  14
  15 from types import *
  16 from optparse import OptionParser
  17
  18 from sfa.storage.parameter import Parameter, Mixed
  19
  20 plc_ns="http://www.planet-lab.org/sfa"
  21
  22 class SoapError(Exception):
  23      def __init__(self, value):
  24          self.value = value
  25      def __str__(self):
  26          return repr(self.value)
  27 try:
  28     set
  29 except NameError:
  30     from sets import Set
  31     set = Set
  32
  33 class WSDLGen:
  34     complex_types = {}
  35     services = {}
  36     num_types = 0
  37     wsdl = None
  38     types = None
  39
  40     def __init__(self, interface_options):
  41         self.interface_options = interface_options
  42
  43     def interface_name (self):
  44          if self.interface_options.aggregate and \
  45                   self.interface_options.slicemgr and \
  46                   self.interface_options.registry:
  47               return "complete"
  48          if self.interface_options.aggregate: return "aggregate"
  49          elif self.interface_options.slicemgr: return "slicemgr"
  50          elif self.interface_options.registry: return "registry"
  51          elif self.interface_options.component: return "component"
  52          else: return "unknown"
  53
  54     def filter_argname(self,argname):
  55         if (not self.interface_options.lite or (argname!="cred")):
  56             if (argname.find('(') != -1):
  57                 # The name has documentation in it :-/
  58                 brackright = argname.split('(')[1]
  59                 if (brackright.find(')') == -1):
  60                         raise Exception("Please fix the argument %s to be well-formed.\n"%argname)
  61                 inbrack = brackright.split(')')[0]
  62                 argname = inbrack
  63         return argname
  64
  65 #    def fold_complex_type_names(self,acc, arg):
  66 #        name = arg.doc
  67 #        if (type(acc)==list):
  68 #            acc.append(name)
  69 #        else:
  70 #            p_i_b = acc.doc
  71 #            acc = [p_i_b,name]
  72 #        return acc
  73 #
  74 #    def fold_complex_type(self,acc, arg):
  75 #        name = self.name_complex_type(arg)
  76 #        self.complex_types[arg]=name
  77 #        if (type(acc)==list):
  78 #            acc.append(name)
  79 #        else:
  80 #            p_i_b = self.name_complex_type(acc)
  81 #            acc = [p_i_b,name]
  82 #        return acc
  83
  84     def name_complex_type(self,arg):
  85
  86         types_section = self.types.getElementsByTagName("xsd:schema")[0]
  87
  88         #pdb.set_trace()
  89         if (isinstance(arg, Mixed)):
  90 #            inner_types = reduce(self.fold_complex_type, arg)
  91 #            inner_names = reduce(self.fold_complex_type_names, arg)
  92             inner_types = [ self.name_complex_type(x) for x in arg ]
  93             inner_names = [ x.doc for x in arg ]
  94             if (inner_types[-1]=="none"):
  95                 inner_types=inner_types[:-1]
  96                 min_args = 0
  97             else:
  98                 min_args = 1
  99
 100             self.num_types += 1
 101             type_name = "Type%d"%self.num_types
 102             complex_type = types_section.appendChild(self.types.createElement("xsd:complexType"))
 103             complex_type.setAttribute("name", type_name)
 104
 105             choice = complex_type.appendChild(self.types.createElement("xsd:choice"))
 106             for (n,t) in zip(inner_names,inner_types):
 107                 element = choice.appendChild(self.types.createElement("element"))
 108                 n = self.filter_argname(n)
 109                 element.setAttribute("name", n)
 110                 element.setAttribute("type", "%s"%t)
 111                 element.setAttribute("minOccurs","%d"%min_args)
 112             return "xsdl:%s"%type_name
 113         elif (isinstance(arg, Parameter)):
 114             return (self.name_simple_type(arg.type))
 115         elif type(arg) in ( ListType , TupleType ):
 116             inner_type = self.name_complex_type(arg[0])
 117             self.num_types=self.num_types+1
 118             type_name = "Type%d"%self.num_types
 119             complex_type = types_section.appendChild(self.types.createElement("xsd:complexType"))
 120             type_name = self.filter_argname(type_name)
 121             complex_type.setAttribute("name", type_name)
 122             complex_content = complex_type.appendChild(self.types.createElement("xsd:complexContent"))
 123             restriction = complex_content.appendChild(self.types.createElement("xsd:restriction"))
 124             restriction.setAttribute("base","soapenc:Array")
 125             attribute = restriction.appendChild(self.types.createElement("xsd:attribute"))
 126             attribute.setAttribute("ref","soapenc:arrayType")
 127             attribute.setAttribute("wsdl:arrayType","%s[]"%inner_type)
 128
 129             return "xsdl:%s"%type_name
 130
 131         elif type(arg) == DictType or arg == DictType or (inspect.isclass(arg) and issubclass(arg, dict)):
 132             self.num_types=self.num_types+1
 133             type_name = "Type%d"%self.num_types
 134             complex_type = types_section.appendChild(self.types.createElement("xsd:complexType"))
 135             type_name = self.filter_argname(type_name)
 136             complex_type.setAttribute("name", type_name)
 137             complex_content = complex_type.appendChild(self.types.createElement("xsd:sequence"))
 138
 139             for k in arg.fields:
 140                 inner_type = self.name_complex_type(arg.fields[k])
 141                 element=complex_content.appendChild(self.types.createElement("xsd:element"))
 142                 element.setAttribute("name",k)
 143                 element.setAttribute("type",inner_type)
 144
 145             return "xsdl:%s"%type_name
 146         else:
 147             return (self.name_simple_type(arg))
 148
 149     def name_simple_type(self,arg_type):
 150         # A Parameter is reported as an instance, even though it is serialized as a type <>
 151         if type(arg_type) == InstanceType:
 152             return (self.name_simple_type(arg_type.type))
 153         if arg_type == None:
 154             return "none"
 155         if arg_type == DictType:
 156             return "xsd:anyType"
 157         if arg_type in (ListType, TupleType):
 158             return "xsd:arrayType"
 159         elif arg_type == IntType or arg_type == LongType:
 160             return "xsd:int"
 161         elif arg_type == bool:
 162             return "xsd:boolean"
 163         elif arg_type == FloatType:
 164             return "xsd:double"
 165         elif arg_type in StringTypes:
 166             return "xsd:string"
 167         else:
 168            pdb.set_trace()
 169            raise SoapError("Cannot handle %s objects" % arg_type)
 170
 171     def param_type(self, arg):
 172         return (self.name_complex_type(arg))
 173
 174     def add_wsdl_ports_and_bindings (self):
 175         for method in apistub.methods:
 176
 177             # Skip system. methods
 178             if "system." in method:
 179                 continue
 180
 181             function = apistub.callable(method) # Commented documentation
 182             #lines = ["// " + line.strip() for line in function.__doc__.strip().split("\n")]
 183             #print "\n".join(lines)
 184             #print
 185
 186
 187             in_el = self.wsdl.lastChild.appendChild(self.wsdl.createElement("message"))
 188             in_el.setAttribute("name", method + "_in")
 189
 190             for service_name in function.interfaces:
 191                 if (self.services.has_key(service_name)):
 192                     if (not method in self.services[service_name]):
 193                         self.services[service_name].append(method)
 194                 else:
 195                     self.services[service_name]=[method]
 196
 197             # Arguments
 198
 199             if (function.accepts):
 200                 (min_args, max_args, defaults) = function.args()
 201                 for (argname,argtype) in zip(max_args,function.accepts):
 202                     argname = self.filter_argname(argname)
 203                     arg_part = in_el.appendChild(self.wsdl.createElement("part"))
 204                     arg_part.setAttribute("name", argname)
 205                     arg_part.setAttribute("type", self.param_type(argtype))
 206
 207             # Return type
 208             return_type = function.returns
 209             out_el = self.wsdl.lastChild.appendChild(self.wsdl.createElement("message"))
 210             out_el.setAttribute("name", method + "_out")
 211             ret_part = out_el.appendChild(self.wsdl.createElement("part"))
 212             ret_part.setAttribute("name", "Result")
 213             ret_part.setAttribute("type", self.param_type(return_type))
 214
 215             # Port connecting arguments with return type
 216
 217             port_el = self.wsdl.lastChild.appendChild(self.wsdl.createElement("portType"))
 218             port_el.setAttribute("name", method + "_port")
 219
 220             op_el = port_el.appendChild(self.wsdl.createElement("operation"))
 221             op_el.setAttribute("name", method)
 222             inp_el=self.wsdl.createElement("input")
 223             inp_el.setAttribute("message","tns:" + method + "_in")
 224             inp_el.setAttribute("name",method+"_request")
 225             op_el.appendChild(inp_el)
 226             out_el = self.wsdl.createElement("output")
 227             out_el.setAttribute("message","tns:" + method + "_out")
 228             out_el.setAttribute("name",method+"_response")
 229             op_el.appendChild(out_el)
 230
 231             # Bindings
 232
 233             bind_el = self.wsdl.lastChild.appendChild(self.wsdl.createElement("binding"))
 234             bind_el.setAttribute("name", method + "_binding")
 235             bind_el.setAttribute("type", "tns:" + method + "_port")
 236
 237             soap_bind = bind_el.appendChild(self.wsdl.createElement("soap:binding"))
 238             soap_bind.setAttribute("style", "rpc")
 239             soap_bind.setAttribute("transport","http://schemas.xmlsoap.org/soap/http")
 240
 241
 242             wsdl_op = bind_el.appendChild(self.wsdl.createElement("operation"))
 243             wsdl_op.setAttribute("name", method)
 244             wsdl_op.appendChild(self.wsdl.createElement("soap:operation")).setAttribute("soapAction",
 245                     "urn:" + method)
 246
 247
 248             wsdl_input = wsdl_op.appendChild(self.wsdl.createElement("input"))
 249             input_soap_body = wsdl_input.appendChild(self.wsdl.createElement("soap:body"))
 250             input_soap_body.setAttribute("use", "encoded")
 251             input_soap_body.setAttribute("namespace", "urn:" + method)
 252             input_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 253
 254
 255             wsdl_output = wsdl_op.appendChild(self.wsdl.createElement("output"))
 256             output_soap_body = wsdl_output.appendChild(self.wsdl.createElement("soap:body"))
 257             output_soap_body.setAttribute("use", "encoded")
 258             output_soap_body.setAttribute("namespace", "urn:" + method)
 259             output_soap_body.setAttribute("encodingStyle","http://schemas.xmlsoap.org/soap/encoding/")
 260
 261
 262     def add_wsdl_services(self):
 263         for service in self.services.keys():
 264             if (getattr(self.interface_options,service)):
 265                 service_el = self.wsdl.lastChild.appendChild(self.wsdl.createElement("service"))
 266                 service_el.setAttribute("name", service)
 267
 268                 for method in self.services[service]:
 269                         name=method
 270                         servport_el = service_el.appendChild(self.wsdl.createElement("port"))
 271                         servport_el.setAttribute("name", name + "_port")
 272                         servport_el.setAttribute("binding", "tns:" + name + "_binding")
 273
 274                         soapaddress = servport_el.appendChild(self.wsdl.createElement("soap:address"))
 275                         soapaddress.setAttribute("location", "%s/%s" % (plc_ns,service))
 276
 277
 278     def compute_wsdl_definitions(self):
 279         wsdl_text_header = """
 280             <?xml-stylesheet type="text/xsl" href="wsdl2html.xsl"?>
 281             <wsdl:definitions
 282             name="myplc-sfa-%s"
 283             targetNamespace="%s/sfa.wsdl"
 284             xmlns="http://schemas.xmlsoap.org/wsdl/"
 285             xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 286             xmlns:xsdl="%s/schema"
 287             xmlns:tns="%s/sfa.wsdl"
 288             xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 289             xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 290             xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"/>
 291             """ % (self.interface_name(),plc_ns,plc_ns,plc_ns)
 292
 293         self.wsdl = xml.dom.minidom.parseString(wsdl_text_header)
 294
 295
 296     def compute_wsdl_definitions_and_types(self):
 297         wsdl_text_header = """
 298         <?xml-stylesheet type="text/xsl" href="wsdl2html.xsl"?>
 299         <wsdl:definitions
 300             name="myplc-sfa-%s"
 301             targetNamespace="%s/sfa.wsdl"
 302             xmlns="http://schemas.xmlsoap.org/wsdl/"
 303             xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 304             xmlns:xsdl="%s/schema"
 305             xmlns:tns="%s/sfa.wsdl"
 306             xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
 307             xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 308             xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
 309             <types>
 310                 <xsd:schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="%s/schema"/>
 311             </types>
 312         </wsdl:definitions> """ % (self.interface_name(),plc_ns, plc_ns, plc_ns, plc_ns)
 313         self.types = xml.dom.minidom.parseString(wsdl_text_header)
 314
 315
 316     def add_wsdl_types(self):
 317         wsdl_types = self.wsdl.importNode(self.types.getElementsByTagName("types")[0], True)
 318         self.wsdl.lastChild.appendChild(wsdl_types)
 319
 320     def generate_wsdl(self):
 321         self.compute_wsdl_definitions_and_types()
 322         self.compute_wsdl_definitions()
 323         self.add_wsdl_ports_and_bindings()
 324         self.add_wsdl_types()
 325         self.add_wsdl_services()
 326
 327     def pretty_print(self):
 328         if (self.wsdl):
 329              print xml.dom.minidom.Document.toprettyxml(self.wsdl)
 330         else:
 331              raise Exception("Empty WSDL")
 332
 333 def main():
 334     parser = OptionParser()
 335     parser.add_option("-r", "--registry", dest="registry", action="store_true",
 336                               help="Generate registry.wsdl", metavar="FILE")
 337     parser.add_option("-s", "--slice-manager",
 338                               action="store_true", dest="slicemgr",
 339                               help="Generate sm.wsdl")
 340     parser.add_option("-a", "--aggregate", action="store_true", dest="aggregate",
 341                               help="Generate am.wsdl")
 342     parser.add_option("-c", "--component", action="store_true", dest="component",
 343                               help="Generate cm.wsdl")
 344     parser.add_option("-g", "--geni-aggregate", action="store_true", dest="geni_am",
 345                       help="Generate gm.wsdl")
 346     parser.add_option("-l", "--lite", action="store_true", dest="lite",
 347                               help="Generate LITE version of the interface, in which calls exclude credentials")
 348     (interface_options, args) = parser.parse_args()
 349
 350     gen = WSDLGen(interface_options)
 351     gen.generate_wsdl()
 352     gen.pretty_print()
 353
 354
 355 if __name__ == "__main__":
 356         main()