1 files changed, 60 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/handler/SpeedLimitHandler.java b/src/main/java/org/traccar/handler/SpeedLimitHandler.java
new file mode 100644
index 000000000..65f2c9cfe
--- /dev/null
+++ b/src/main/java/org/traccar/handler/SpeedLimitHandler.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ *
+ * 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.
+ */
+package org.traccar.handler;
+
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.traccar.model.Position;
+import org.traccar.speedlimit.SpeedLimitProvider;
+
+@ChannelHandler.Sharable
+public class SpeedLimitHandler extends ChannelInboundHandlerAdapter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(SpeedLimitHandler.class);
+
+    private final SpeedLimitProvider speedLimitProvider;
+
+    public SpeedLimitHandler(SpeedLimitProvider speedLimitProvider) {
+        this.speedLimitProvider = speedLimitProvider;
+    }
+
+    @Override
+    public void channelRead(final ChannelHandlerContext ctx, Object message) {
+        if (message instanceof Position) {
+            final Position position = (Position) message;
+            speedLimitProvider.getSpeedLimit(position.getLatitude(), position.getLongitude(),
+                    new SpeedLimitProvider.SpeedLimitProviderCallback() {
+                @Override
+                public void onSuccess(double speedLimit) {
+                    position.set(Position.KEY_SPEED_LIMIT, speedLimit);
+                    ctx.fireChannelRead(position);
+                }
+
+                @Override
+                public void onFailure(Throwable e) {
+                    LOGGER.warn("Speed limit provider failed", e);
+                    ctx.fireChannelRead(position);
+                }
+            });
+        } else {
+            ctx.fireChannelRead(message);
+        }
+    }
+
+}