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-rw-r--r--src/main/java/org/traccar/BaseProtocolPoller.java55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/BaseProtocolPoller.java b/src/main/java/org/traccar/BaseProtocolPoller.java
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+++ b/src/main/java/org/traccar/BaseProtocolPoller.java
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+/*
+ * Copyright 2022 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;
+
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.util.concurrent.Future;
+
+import java.net.SocketAddress;
+import java.util.concurrent.TimeUnit;
+
+public abstract class BaseProtocolPoller extends ChannelDuplexHandler {
+
+ private final long interval;
+ private Future<?> timeout;
+
+ public BaseProtocolPoller(long interval) {
+ this.interval = interval;
+ }
+
+ protected abstract void sendRequest(Channel channel, SocketAddress remoteAddress);
+
+ @Override
+ public void channelActive(ChannelHandlerContext ctx) throws Exception {
+ super.channelActive(ctx);
+ if (interval > 0) {
+ timeout = ctx.executor().scheduleAtFixedRate(
+ () -> sendRequest(ctx.channel(), ctx.channel().remoteAddress()), 0, interval, TimeUnit.SECONDS);
+ }
+ }
+
+ @Override
+ public void channelInactive(ChannelHandlerContext ctx) throws Exception {
+ super.channelInactive(ctx);
+ if (timeout != null) {
+ timeout.cancel(false);
+ timeout = null;
+ }
+ }
+
+}