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strolch-plc
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[New] Added PlcService.debounce()

This commit is contained in:
Robert von Burg 2022-07-13 15:18:22 +02:00
parent 56c1fa551e
commit bc73abbf49
Signed by: eitch
GPG Key ID: 75DB9C85C74331F7
1 changed files with 24 additions and 0 deletions
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strolch-plc-core/src/main/java/li/strolch/plc/core/PlcService.java
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@ -1,10 +1,12 @@
package li.strolch.plc.core;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static li.strolch.plc.model.PlcConstants.PARAM_VALUE;
import static li.strolch.plc.model.PlcConstants.TYPE_PLC_ADDRESS;
import static li.strolch.runtime.StrolchConstants.DEFAULT_REALM;
import static li.strolch.utils.helper.ExceptionHelper.getCallerMethod;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.concurrent.*;
@ -48,12 +50,15 @@ public abstract class PlcService implements PlcListener {
protected final ComponentContainer container;
protected final PlcHandler plcHandler;
protected final Map<PlcAddress, Future<?>> debounceMap;
private PlcServiceState state;
public PlcService(PlcHandler plcHandler) {
this.container = plcHandler.getContainer();
this.plcHandler = plcHandler;
this.state = PlcServiceState.Unregistered;
this.debounceMap = new ConcurrentHashMap<>();
}
public PlcServiceState getState() {
@ -418,6 +423,25 @@ public abstract class PlcService implements PlcListener {
return this.container.getAgent().getScheduledExecutor(getClass().getSimpleName());
}
/**
* <p>Delays the execution of the given runnable by the given delay in milliseconds. Subsequent calls with the
* given
* {@link PlcAddress} will cancel any previous calls with the same address, delaying the execution again by the
* given amount of time.</p>
*
* <p>This methods is used to handle hardware where the bits change often, before resting at a new state. E.g. a
* light barrier where it might toggle between true and false a few times, before staying true when the light
* barrier detects an object.</p>
*/
protected void debounce(PlcAddress address, Runnable runnable, int delay) {
Future<?> previousTask = this.debounceMap.put(address, schedule(() -> {
this.debounceMap.remove(address);
runnable.run();
}, delay, MILLISECONDS));
if (previousTask != null)
previousTask.cancel(true);
}
/**
* Submits the given runnable for asynchronous execution
*