TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / src / anbox / rpc / template_message_processor.h

diff --git a/src/type3_AndroidCloud/anbox-master/src/anbox/rpc/template_message_processor.h b/src/type3_AndroidCloud/anbox-master/src/anbox/rpc/template_message_processor.h
new file mode 100644 (file)
index 0000000..328a621
--- /dev/null
+++ b/src/type3_AndroidCloud/anbox-master/src/anbox/rpc/template_message_processor.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright © 2014 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Alan Griffiths <alan@octopull.co.uk>
+ */
+
+#ifndef ANBOX_RPC_TEMPLATE_MESSAGE_PROCESSOR_H_
+#define ANBOX_RPC_TEMPLATE_MESSAGE_PROCESSOR_H_
+
+#include <google/protobuf/stubs/common.h>
+#ifdef USE_PROTOBUF_CALLBACK_HEADER
+#include <google/protobuf/stubs/callback.h>
+#endif
+
+#include "anbox/rpc/message_processor.h"
+
+#include "anbox_rpc.pb.h"
+
+namespace anbox {
+namespace rpc {
+// Utility metafunction result_ptr_t<> allows invoke() to pick the right
+// send_response() overload. The base template resolves to the prototype
+// "send_response(::google::protobuf::uint32 id, ::google::protobuf::Message*
+// response)"
+// Client code may specialize result_ptr_t to resolve to another overload.
+template <typename ResultType>
+struct result_ptr_t {
+  typedef ::google::protobuf::MessageLite* type;
+};
+
+// Boiler plate for unpacking a parameter message, invoking a server function,
+// and
+// sending the result message. Assumes the existence of Self::send_response().
+template <class Self, class Bridge, class BridgeX, class ParameterMessage,
+          class ResultMessage>
+void invoke(Self* self, Bridge* rpc,
+            void (BridgeX::*function)(ParameterMessage const* request,
+                                      ResultMessage* response,
+                                      ::google::protobuf::Closure* done),
+            Invocation const& invocation) {
+  ParameterMessage parameter_message;
+  if (!parameter_message.ParseFromString(invocation.parameters()))
+    throw std::runtime_error("Failed to parse message parameters!");
+  ResultMessage result_message;
+
+  try {
+    std::unique_ptr<google::protobuf::Closure> callback(
+        google::protobuf::NewPermanentCallback<
+            Self, ::google::protobuf::uint32,
+            typename result_ptr_t<ResultMessage>::type>(
+            self, &Self::send_response, invocation.id(), &result_message));
+
+    (rpc->*function)(&parameter_message, &result_message, callback.get());
+  } catch (std::exception const& x) {
+    result_message.set_error(std::string("Error processing request: ") +
+                             x.what());
+    self->send_response(invocation.id(), &result_message);
+  }
+}
+}  // namespace rpc
+}  // namespace anbox
+
+#endif