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/*
* Copyright 2018-2020 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;
/**
* The {@link Subscription} is the link to the actual running {@link Task}.
*
* Due to the asynchronous nature of the {@link Task} execution a {@link Subscription} might not immediately become
* active. {@link #isActive()} provides an answer if the underlying {@link Task} is already running.
*
*
* @author Mark Paluch
* @since 2.2
*/
public interface Subscription extends Cancelable {
/**
* @return {@literal true} if the subscription is currently executed.
*/
boolean isActive();
/**
* Synchronous, blocking call returns once the {@link Subscription} becomes {@link #isActive()
* active} or {@link Duration timeout} exceeds.
*
* @param timeout must not be {@literal null}.
* @return {@code true} if the subscription was activated. {@code false} if the waiting time elapsed before task was
* activated.
* @throws InterruptedException if the current thread is interrupted while waiting.
*/
boolean await(Duration timeout) throws InterruptedException;
}