routing: add routing dump from planning debug msg tool.

modules/routing/tools/BUILD

@@ -13,4 +13,16 @@ cc_binary(
    ],
 )
 
+cc_binary(
+    name = "routing_dump",
+    srcs = ["routing_dump.cc"],
+    deps = [
+        "//modules/common",
+        "//modules/common/util",
+        "//modules/planning/proto:planning_proto",
+        "//modules/routing:routing_lib",
+        "//framework:cybertron",
+   ],
+)
+
 cpplint()

modules/routing/tools/routing_dump.cc

+/******************************************************************************
+ * Copyright 2018 The Apollo Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *****************************************************************************/
+
+#include "cybertron/common/log.h"
+#include "cybertron/cybertron.h"
+#include "modules/common/adapters/adapter_gflags.h"
+#include "modules/planning/proto/planning.pb.h"
+#include "modules/routing/proto/routing.pb.h"
+
+DEFINE_string(routing_dump_file,
+              "/tmp/routing.pb.txt",
+              "file name to dump routing response.");
+
+void MessageCallback(
+    const std::shared_ptr<apollo::planning::ADCTrajectory>& trajectory) {
+  if (trajectory->debug().planning_data().has_routing()) {
+    std::ofstream dump_file(FLAGS_routing_dump_file);
+    dump_file << trajectory->debug().planning_data().routing().DebugString();
+    dump_file.close();
+    apollo::cybertron::Shutdown();
+    exit(0);
+  }
+}
+
+int main(int argc, char *argv[]) {
+  google::ParseCommandLineFlags(&argc, &argv, true);
+
+  apollo::cybertron::Init(argv[0]);
+  FLAGS_alsologtostderr = true;
+
+  auto listener_node = apollo::cybertron::CreateNode("routing_dump");
+  auto listener =
+      listener_node->CreateReader<apollo::planning::ADCTrajectory>(
+          FLAGS_planning_trajectory_topic, MessageCallback);
+  apollo::cybertron::WaitForShutdown();
+  return 0;
+}