tools: added a fake_prediction generator tool

apollo.sh

@@ -121,7 +121,8 @@ function generate_build_targets() {
     //modules/prediction/...
     //modules/routing/...
     //modules/third_party_perception/...
-    //modules/tools/manual_traffic_light/..." 
+    //modules/tools/manual_traffic_light/...
+    //modules/tools/prediction/fake_prediction/..."
     # //modules/data/...
 
   if [ $? -ne 0 ]; then
@@ -210,6 +211,8 @@ function build() {
   # fi
   if [ $? -eq 0 ]; then
     success 'Build passed!'
+  else
+    fail 'Build failed'
   fi
 }
 

modules/tools/prediction/fake_prediction/BUILD

+load("//tools:cpplint.bzl", "cpplint")
+
+package(default_visibility = ["//visibility:public"])
+
+cc_binary(
+    name = "libfake_prediction_component.so",
+    srcs = [
+        "fake_prediction.cc",
+    ],
+    linkopts = ["-shared"],
+    deps = [
+        "//external:gflags",
+        "//framework:cybertron",
+        "//modules/common/adapters:adapter_gflags",
+        "//modules/common/util",
+        "//modules/prediction/proto:prediction_proto",
+    ],
+)
+
+cpplint()

modules/tools/prediction/fake_prediction/fake_prediction.cc

+/******************************************************************************
+ * Copyright 2017 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.
+ *****************************************************************************/
+
+/**
+ * @file
+ */
+
+#include "cybertron/component/timer_component.h"
+#include "cybertron/cybertron.h"
+#include "modules/common/adapters/adapter_gflags.h"
+#include "modules/common/util/message_util.h"
+#include "modules/prediction/proto/prediction_obstacle.pb.h"
+
+namespace apollo {
+namespace prediction {
+
+/**
+ * class FakePredictionComponent
+ * This class generates fake prediction messages. The prediction message only
+ * has valid headers.
+ *
+ * This tool is used to trigger modules that depends on prediction message.
+ */
+
+class FakePredictionComponent : public apollo::cybertron::TimerComponent {
+ public:
+  bool Init() override {
+    prediction_writer_ =
+        node_->CreateWriter<PredictionObstacles>(FLAGS_prediction_topic);
+    return true;
+  }
+  bool Proc() override {
+    auto prediction = std::make_shared<PredictionObstacles>();
+    common::util::FillHeader("fake_prediction", prediction.get());
+    prediction_writer_->Write(prediction);
+    return true;
+  }
+
+ private:
+  std::shared_ptr<apollo::cybertron::Writer<PredictionObstacles>>
+      prediction_writer_;
+};
+CYBERTRON_REGISTER_COMPONENT(FakePredictionComponent);
+
+}  // namespace prediction
+}  // namespace apollo

modules/tools/prediction/fake_prediction/fake_prediction.dag

+module_config {
+    module_library : "/apollo/bazel-bin/modules/tools/prediction/fake_prediction/libfake_prediction_component.so"
+    timer_components {
+        class_name : "FakePredictionComponent"
+        config {
+            name: "fake_prediction"
+            interval: 100
+        }
+    }
+}

modules/tools/prediction/fake_prediction/fake_prediction.launch

+<cybertron>
+    <module>
+        <name>fake_prediction</name>
+        <dag_conf>/apollo/modules/tools/prediction/fake_prediction/fake_prediction.dag</dag_conf>
+        <process_name></process_name>
+    </module>
+</cybertron>