spring-data-redis Task 源码
spring-data-redis Task 代码
文件路径：/src/main/java/org/springframework/data/redis/stream/Task.java
/*
* Copyright 2018-2022 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
*
* https://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 org.springframework.data.redis.stream;
import java.time.Duration;
import org.springframework.scheduling.SchedulingAwareRunnable;
/**
* The actual {@link Task} to run within the {@link StreamMessageListenerContainer}.
*
* @author Mark Paluch
* @since 2.2
*/
public interface Task extends SchedulingAwareRunnable, Cancelable {
/**
* @return {@literal true} if the task is currently {@link State#RUNNING running}.
*/
default boolean isActive() {
return State.RUNNING.equals(getState());
}
/**
* Get the current lifecycle phase.
*
* @return never {@literal null}.
*/
State getState();
/**
* Synchronous, <strong>blocking</strong> call that awaits until this {@link Task} becomes active. Start awaiting is
* rearmed after {@link #cancel() cancelling} to support restart.
*
* @param timeout must not be {@literal null}.
* @return {@code true} if the task was started. {@code false} if the waiting time elapsed before task was started.
* @throws InterruptedException if the current thread is interrupted while waiting.
*/
boolean awaitStart(Duration timeout) throws InterruptedException;
/**
* The {@link Task.State} defining the lifecycle phase the actual {@link Task}.
*
* @author Mark Paluch
* @since 2.2
*/
enum State {
CREATED, STARTING, RUNNING, CANCELLED;
}
}
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