initial version

streaming/resource.py

@@ -0,0 +1,36 @@
+from twisted.web.resource import Resource as TwistedResource, _computeAllowedMethods
+from twisted.web import server, guard
+from twisted.internet import defer
+
+
+class Resource(TwistedResource):
+    content_type = 'application/json'
+    
+
+    def render(self, request):
+        """
+        Adds support for deferred render methods
+        """
+        m = getattr(self, 'render_' + request.method, None)
+        if not m:
+            # This needs to be here until the deprecated subclasses of the
+            # below three error resources in twisted.web.error are removed.
+            from twisted.web.error import UnsupportedMethod
+            allowedMethods = (getattr(self, 'allowedMethods', 0) or
+                              _computeAllowedMethods(self))
+            raise UnsupportedMethod(allowedMethods)
+        
+        result = defer.maybeDeferred(m, request)
+        
+        def write_rest(defer_result, request):
+            request.write(defer_result)
+            request.finish()
+        
+        def err_rest(defer_result=None):
+            defer_result.printTraceback()
+            request.finish()
+        
+        result.addCallback(write_rest, request)
+        result.addErrback(err_rest)
+        
+        return server.NOT_DONE_YET