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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC

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/*
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * 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.reactivex.rxjava3.core;

import io.reactivex.rxjava3.annotations.NonNull;

/**
 * A functional interface that has a {@code subscribe()} method that receives
 * a {@link FlowableEmitter} instance that allows pushing
 * events in a backpressure-safe and cancellation-safe manner.
 *
 * @param  the value type pushed
 */
@FunctionalInterface
public interface FlowableOnSubscribe<@NonNull T> {

    /**
     * Called for each {@link org.reactivestreams.Subscriber Subscriber} that subscribes.
     * @param emitter the safe emitter instance, never {@code null}
     * @throws Throwable on error
     */
    void subscribe(@NonNull FlowableEmitter emitter) throws Throwable;
}