/
CyclicThingHandler.java
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/
CyclicThingHandler.java
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/*
* Copyright (C) 2023-2023 ConnectorIO Sp. z o.o.
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
*/
package org.connectorio.addons.communication.watchdog.internal;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.connectorio.addons.communication.watchdog.Watchdog;
import org.connectorio.addons.communication.watchdog.contrib.ThingStatusWatchdogListener;
import org.connectorio.addons.communication.watchdog.WatchdogManager;
import org.openhab.core.library.types.OnOffType;
import org.openhab.core.thing.ChannelUID;
import org.openhab.core.thing.Thing;
import org.openhab.core.thing.binding.ThingHandler;
import org.openhab.core.thing.binding.ThingHandlerCallback;
import org.openhab.core.types.Command;
// This class does not use base class from openHAB lib due to "non-null" annotation processing
// troubles. Beyond that it is ready for reuse.
public abstract class CyclicThingHandler implements ThingHandler {
private final ScheduledExecutorService scheduler = null;
private WatchdogManager watchdogManager;
private Watchdog watchdog;
// tag::injection[]
@SuppressWarnings("all")
public CyclicThingHandler(Thing thing, WatchdogManager watchdogManager) {
this.watchdogManager = watchdogManager;
}
// end::injection[]
// tag::initialization[]
@Override
public void initialize() {
ChannelUID channelUID = new ChannelUID(getThing().getUID(), "test");
this.watchdog = watchdogManager.builder(getThing())
.withChannel(channelUID, 1000) // <1>
.build( // <2>
getCallback(), // <3>
new ThingStatusWatchdogListener(getThing(), getCallback()) // <4>
);
scheduler.scheduleAtFixedRate(() -> {
// simulate cyclic update
watchdog.getCallbackWrapper().stateUpdated(channelUID, OnOffType.ON); // <5>
}, 0, 1000, TimeUnit.MILLISECONDS);
}
// end::initialization[]
// tag::close[]
@Override
public void dispose() {
if (watchdog != null) {
watchdog.close();
}
}
// end::close[]
@Override
public void handleCommand(ChannelUID channelUID, Command command) {
}
protected abstract ThingHandlerCallback getCallback();
}