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RecurringTaskWithPersistentScheduleMain.java
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RecurringTaskWithPersistentScheduleMain.java
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/*
* Copyright (C) Gustav Karlsson
*
* <p>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
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>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 com.github.kagkarlsson.examples;
import com.github.kagkarlsson.examples.helpers.Example;
import com.github.kagkarlsson.scheduler.Scheduler;
import com.github.kagkarlsson.scheduler.task.helper.RecurringTaskWithPersistentSchedule;
import com.github.kagkarlsson.scheduler.task.helper.ScheduleAndData;
import com.github.kagkarlsson.scheduler.task.helper.Tasks;
import com.github.kagkarlsson.scheduler.task.schedule.*;
import java.time.Duration;
import javax.sql.DataSource;
public class RecurringTaskWithPersistentScheduleMain extends Example {
public static void main(String[] args) {
new RecurringTaskWithPersistentScheduleMain().runWithDatasource();
}
@Override
public void run(DataSource dataSource) {
final RecurringTaskWithPersistentSchedule<ScheduleAndNoData> task =
Tasks.recurringWithPersistentSchedule("dynamic-recurring-task", ScheduleAndNoData.class)
.execute(
(taskInstance, executionContext) -> {
System.out.println(
"Instance: '"
+ taskInstance.getId()
+ "' ran using persistent schedule: "
+ taskInstance.getData().getSchedule());
});
final Scheduler scheduler =
Scheduler.create(dataSource, task)
.pollingInterval(Duration.ofSeconds(1))
.registerShutdownHook()
.build();
scheduler.start();
sleep(2_000);
scheduler.schedule(
task.schedulableInstance(
"id1", new ScheduleAndNoData(Schedules.fixedDelay(Duration.ofSeconds(1)))));
scheduler.schedule(
task.schedulableInstance(
"id2", new ScheduleAndNoData(Schedules.fixedDelay(Duration.ofSeconds(6)))));
}
public static class ScheduleAndNoData implements ScheduleAndData {
private static final long serialVersionUID = 1L; // recommended when using Java serialization
private final FixedDelay schedule;
private ScheduleAndNoData() {
this(null);
}
public ScheduleAndNoData(FixedDelay schedule) {
this.schedule = schedule;
}
@Override
public FixedDelay getSchedule() {
return schedule;
}
@Override
public Object getData() {
return null;
}
}
}