com.github.kagkarlsson.scheduler.task.helper.OneTimeTask Maven / Gradle / Ivy

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Simple persistent scheduler for scheduled tasks, recurring or ad-hoc.

There is a newer version: 15.0.0

/*
 * Copyright (C) Gustav Karlsson
 *
 * 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 com.github.kagkarlsson.scheduler.task.helper;

import com.github.kagkarlsson.scheduler.task.*;
import com.github.kagkarlsson.scheduler.task.CompletionHandler.OnCompleteRemove;
import com.github.kagkarlsson.scheduler.task.DeadExecutionHandler.ReviveDeadExecution;
import com.github.kagkarlsson.scheduler.task.FailureHandler.OnFailureRetryLater;
import java.time.Duration;

public abstract class OneTimeTask extends AbstractTask {

  public OneTimeTask(String name, Class dataClass) {
    this(
        name,
        dataClass,
        new OnFailureRetryLater<>(Duration.ofMinutes(5)),
        new ReviveDeadExecution<>());
  }

  public OneTimeTask(String name, Class dataClass, FailureHandler failureHandler) {
    this(name, dataClass, failureHandler, new ReviveDeadExecution<>());
  }

  public OneTimeTask(
      String name,
      Class dataClass,
      FailureHandler failureHandler,
      DeadExecutionHandler deadExecutionHandler) {
    super(name, dataClass, failureHandler, deadExecutionHandler);
  }

  @Override
  public SchedulableInstance schedulableInstance(String id) {
    return new SchedulableTaskInstance<>(
        new TaskInstance<>(getName(), id), (currentTime) -> currentTime);
  }

  @Override
  public SchedulableInstance schedulableInstance(String id, T data) {
    return new SchedulableTaskInstance<>(
        new TaskInstance<>(getName(), id, data), (currentTime) -> currentTime);
  }

  @Override
  public CompletionHandler execute(
      TaskInstance taskInstance, ExecutionContext executionContext) {
    executeOnce(taskInstance, executionContext);
    return new OnCompleteRemove<>();
  }

  public abstract void executeOnce(TaskInstance taskInstance, ExecutionContext executionContext);

  @Override
  public String toString() {
    return "OneTimeTask name=" + getName();
  }
}