A new HostRequest type can be used to have the host framework request object passed to the exposed functions

doc/changes.rst

@@ -4,8 +4,13 @@ Changes
 next
 ----
 
+*   Add a special type 'HostRequest' that allow a function to ask for the host
+    framework request object in its arguments.
+
 *   New Flask adapter: wsmeext.flask
 
+*   Fix: the cornice adapter was not usable.
+
 *   Fix: Submodules of wsmeext were missing in the packages.
 
 *   Fix: The demo app was still depending on the WSME-Soap package (which has

tests/test_cornice.py

@@ -6,7 +6,7 @@ import webtest
 from cornice import Service
 from pyramid.config import Configurator
 
-from wsme.types import text, Base
+from wsme.types import text, Base, HostRequest
 from wsmeext.cornice import signature
 
 
@@ -30,6 +30,16 @@ def users_create(data):
     return data
 
 
+needrequest = Service(name='needrequest', path='/needrequest')
+
+
+@needrequest.get()
+@signature(bool, HostRequest)
+def needrequest_get(request):
+    assert request.path == '/needrequest', request.path
+    return True
+
+
 def make_app():
     config = Configurator()
     config.include("cornice")
@@ -77,3 +87,7 @@ class WSMECorniceTestCase(unittest.TestCase):
             resp.body,
             '<result><id>2</id><name>new</name></result>'
         )
+
+    def test_pass_request(self):
+        resp = self.app.get('/needrequest')
+        assert resp.json is True

wsme/api.py

@@ -4,6 +4,7 @@ import inspect
 import logging
 
 import wsme.exc
+import wsme.types
 
 log = logging.getLogger(__name__)
 
@@ -74,6 +75,11 @@ class FunctionDefinition(object):
         #: exceptions
         self.ignore_extra_args = False
 
+        #: name of the function argument to pass the host request object.
+        #: Should be set by using the :class:`wsme.types.HostRequest` type
+        #: in the function @\ :function:`signature`
+        self.pass_request = False
+
         #: Dictionnary of protocol-specific options.
         self.extra_options = None
 
@@ -122,8 +128,11 @@ class FunctionDefinition(object):
             default = None
             if not mandatory:
                 default = defaults[i - (len(args) - len(defaults))]
-            self.arguments.append(FunctionArgument(argname, datatype,
-                                                   mandatory, default))
+            if datatype is wsme.types.HostRequest:
+                self.pass_request = argname
+            else:
+                self.arguments.append(FunctionArgument(argname, datatype,
+                                                       mandatory, default))
 
 
 class signature(object):

wsme/types.py

@@ -180,6 +180,11 @@ class UnsetType(object):
 
 Unset = UnsetType()
 
+#: A special type that corresponds to the host framework request object.
+#: It can only be used in the function parameters, and if so the request object
+#: of the host framework will be passed to the function.
+HostRequest = object()
+
 
 pod_types = six.integer_types + (
     bytes, text, float, bool)

wsmeext/cornice.py

@@ -77,6 +77,8 @@ def signature(*args, **kwargs):
                  args_from_body(funcdef, request.body, request.content_type))
             )
             request.override_renderer = 'wsme' + get_outputformat(request)
+            if funcdef.pass_request:
+                kwargs[funcdef.pass_request] = request
             return {
                 'datatype': funcdef.return_type,
                 'result': f(*args, **kwargs)

wsmeext/flask.py

@@ -55,6 +55,9 @@ def signature(*args, **kw):
                 flask.request.mimetype
             )
 
+            if funcdef.pass_request:
+                kwargs[funcdef.pass_request] = flask.request
+
             dataformat = get_dataformat()
 
             try:

wsmeext/pecan.py

@@ -65,6 +65,8 @@ def wsexpose(*args, **kwargs):
                     funcdef, args, kwargs, pecan.request.params, None,
                     pecan.request.body, pecan.request.content_type
                 )
+                if funcdef.pass_request:
+                    kwargs[funcdef.pass_request] = pecan.request
                 result = f(self, *args, **kwargs)
             except:
                 data = wsme.api.format_exception(sys.exc_info())

wsmeext/tg1.py

@@ -53,6 +53,8 @@ def wsexpose(*args, **kwargs):
                 cherrypy.request.body,
                 cherrypy.request.headers['Content-Type']
             )
+            if funcdef.pass_request:
+                kwargs[funcdef.pass_request] = cherrypy.request
             result = f(self, *args, **kwargs)
             return dict(
                 datatype=funcdef.return_type,