io.trino.jdbc.$internal.dev.failsafe.spi.Scheduler Maven / Gradle / Ivy
/*
* Copyright 2016 the original author or authors.
*
* 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 io.trino.jdbc.\$internal.dev.failsafe.spi;
import io.trino.jdbc.\$internal.dev.failsafe.internal.util.DelegatingScheduler;
import java.util.concurrent.*;
/**
* Schedules executions.
*
* @author Jonathan Halterman
* @see DefaultScheduledFuture
*/
public interface Scheduler {
/**
* The default scheduler used by Failsafe if no other scheduler or {@link ScheduledExecutorService} is configured for
* an execution.
*/
Scheduler DEFAULT = DelegatingScheduler.INSTANCE;
/**
* Schedules the {@code callable} to be called after the {@code delay} for the {@code unit}.
*/
ScheduledFuture schedule(Callable callable, long delay, TimeUnit unit);
/**
* Returns a Scheduler adapted from the {@code scheduledExecutorService}.
*/
static Scheduler of(ScheduledExecutorService scheduledExecutorService) {
return scheduledExecutorService::schedule;
}
/**
* Returns a Scheduler adapted from the {@code executorService}.
*/
static Scheduler of(ExecutorService executorService) {
return executorService instanceof ScheduledExecutorService ?
of((ScheduledExecutorService) executorService) :
new DelegatingScheduler(executorService);
}
}