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PeriodicTaskExecutor: use a Handler instead of Timer.

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This commit is contained in:
Dennis Guse
2021-08-24 06:57:38 +02:00
parent b32e87e10b
commit b5165de7f0
2 changed files with 29 additions and 105 deletions
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src/main/java/de/dennisguse/opentracks/services/tasks/PeriodicTaskExecutor.java
+29 -26
View File
@@ -15,6 +15,7 @@
*/
package de.dennisguse.opentracks.services.tasks;
import android.os.Handler;
import android.util.Log;
import androidx.annotation.NonNull;
@@ -51,14 +52,23 @@ public class PeriodicTaskExecutor {
private PeriodicTaskFactory.Task periodicTask;
// Time periodic task executor
private TimerTaskExecutor timerTaskExecutor = null;
private Handler handler;
private boolean metricUnits;
private TrackStatistics trackStatistics;
private Distance nextTaskDistance = Distance.of(Double.MAX_VALUE);
private final Runnable timer = new Runnable() {
@Override
public void run() {
if (trackRecordingService != null && periodicTask != null) {
trackRecordingService.run(periodicTask);
handler.postDelayed(this, getNextDuration());
}
}
};
public PeriodicTaskExecutor(@NonNull TrackRecordingService trackRecordingService, PeriodicTaskFactory periodicTaskFactory) {
this.trackRecordingService = trackRecordingService;
this.periodicTaskFactory = periodicTaskFactory;
@@ -67,18 +77,15 @@ public class PeriodicTaskExecutor {
taskFrequency = TASK_FREQUENCY_OFF;
}
/**
* Restores the executor.
*/
public void restore() {
if (!trackRecordingService.isRecording() || trackRecordingService.isPaused()) {
Log.d(TAG, "Not recording or paused.");
return;
}
if (!isTimeFrequency() && timerTaskExecutor != null) {
timerTaskExecutor.shutdown();
timerTaskExecutor = null;
if (!isTimeFrequency() && handler != null) {
handler.removeCallbacks(timer);
handler = null;
}
if (taskFrequency == TASK_FREQUENCY_OFF) {
Log.d(TAG, "Task frequency is off.");
@@ -89,33 +96,27 @@ public class PeriodicTaskExecutor {
periodicTask.start();
if (isTimeFrequency()) {
if (timerTaskExecutor == null) {
timerTaskExecutor = new TimerTaskExecutor(periodicTask, trackRecordingService);
if (handler == null) {
handler = new Handler();
}
timerTaskExecutor.scheduleTask(Duration.ofMinutes(taskFrequency));
handler.postDelayed(timer, getNextDuration());
} else {
// For distance periodic task
updateNextTaskDistance();
}
}
/**
* Shuts down the executor.
*/
public void shutdown() {
if (periodicTask != null) {
periodicTask.shutdown();
periodicTask = null;
}
if (timerTaskExecutor != null) {
timerTaskExecutor.shutdown();
timerTaskExecutor = null;
if (handler != null) {
handler.removeCallbacks(timer);
handler = null;
}
}
/**
* Updates the executor.
*/
public void update(@NonNull Track.Id trackId, @NonNull TrackStatistics trackStatistics) {
if (!isDistanceFrequency() || periodicTask == null) {
return;
@@ -165,17 +166,19 @@ public class PeriodicTaskExecutor {
return announcementInterval.multipliedBy(index + 1);
}
/**
* True if time frequency.
*/
private boolean isTimeFrequency() {
return taskFrequency > 0;
}
/**
* True if distance frequency.
*/
private boolean isDistanceFrequency() {
return taskFrequency < 0;
}
private long getNextDuration() {
if (!isTimeFrequency()) {
throw new RuntimeException("Using distance frequency as time frequency is impossible.");
}
Duration interval = Duration.ofMinutes(taskFrequency);
return interval.toMillis() - (trackRecordingService.getTotalTime().toMillis() % interval.toMillis());
}
}
src/main/java/de/dennisguse/opentracks/services/tasks/TimerTaskExecutor.java
-79
View File
@@ -1,79 +0,0 @@
/*
* Copyright 2009 Google Inc.
*
* 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 de.dennisguse.opentracks.services.tasks;
import java.time.Duration;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
import de.dennisguse.opentracks.services.TrackRecordingService;
/**
* This class will periodically perform a task.
*
* @author Sandor Dornbush
*/
class TimerTaskExecutor {
private final PeriodicTaskFactory.Task periodicTask;
private final TrackRecordingService trackRecordingService;
private TimerTask timerTask;
private Timer timer;
public TimerTaskExecutor(PeriodicTaskFactory.Task periodicTask, TrackRecordingService trackRecordingService) {
this.periodicTask = periodicTask;
this.trackRecordingService = trackRecordingService;
}
/**
* Schedules the periodic task.
*/
void scheduleTask(Duration interval) {
if (!trackRecordingService.isRecording() || trackRecordingService.isPaused()) {
return;
}
shutdown();
periodicTask.start();
timerTask = new TimerTask() {
@Override
public void run() {
trackRecordingService.run(periodicTask);
}
};
timer = new Timer(TimerTaskExecutor.class.getSimpleName());
//TODO Simplify: far too complicated for it's purpose
long next = System.currentTimeMillis() + interval.toMillis() - (trackRecordingService.getTotalTime().toMillis() % interval.toMillis());
timer.scheduleAtFixedRate(timerTask, new Date(next), interval.toMillis());
}
void shutdown() {
if (timerTask != null) {
timerTask.cancel();
timerTask = null;
}
if (timer != null) {
timer.cancel();
timer.purge();
timer = null;
}
periodicTask.shutdown();
}
}