/*
 * Copyright 2011-2022 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 io.lettuce.core.event;

import reactor.core.publisher.DirectProcessor;
import reactor.core.publisher.Flux;
import reactor.core.publisher.FluxSink;
import reactor.core.scheduler.Scheduler;
import io.lettuce.core.event.jfr.EventRecorder;

/**
 * Default implementation for an {@link EventBus}. Events are published using a {@link Scheduler} and events are recorded
 * through {@link EventRecorder#record(Event) EventRecorder}.
 *
 * @author Mark Paluch
 * @since 3.4
 */
public class DefaultEventBus implements EventBus {

    private final DirectProcessor<Event> bus;

    private final FluxSink<Event> sink;

    private final Scheduler scheduler;

    private final EventRecorder recorder = EventRecorder.getInstance();

    public DefaultEventBus(Scheduler scheduler) {
        this.bus = DirectProcessor.create();
        this.sink = bus.sink();
        this.scheduler = scheduler;
    }

    @Override
    public Flux<Event> get() {
        return bus.onBackpressureDrop().publishOn(scheduler);
    }

    @Override
    public void publish(Event event) {

        recorder.record(event);

        sink.next(event);
    }

}

@@ -651,55 +651,8 @@
 t;%0A%0A
-import reactor.core.publisher.DirectProcessor;%0A
 impo
@@ -713,24 +713,21 @@
 blisher.
-Flux
 Sink
+s
 ;%0Aimport
@@ -1116,71 +1116,26 @@
 nal 
-DirectProcessor%3CEvent%3E bus;%0A%0A    private final FluxSink
+Sinks.Many
 %3CEvent%3E 
 sink
@@ -1130,20 +1130,19 @@
 %3CEvent%3E 
-sink
+bus
 ;%0A%0A    p
@@ -1322,62 +1322,49 @@
 s = 
-DirectProcessor.create();%0A        this.sink = bus.sink
+Sinks.many().multicast().directBestEffort
 ();%0A
@@ -1470,16 +1470,25 @@
 urn bus.
+asFlux().
 onBackpr
@@ -1628,25 +1628,280 @@
     
-sink.next(event);
+Sinks.EmitResult emitResult;%0A%0A        while ((emitResult = bus.tryEmitNext(event)) == Sinks.EmitResult.FAIL_NON_SERIALIZED) %7B%0A            // busy-loop%0A        %7D%0A%0A        if (emitResult != Sinks.EmitResult.FAIL_ZERO_SUBSCRIBER) %7B%0A            emitResult.orThrow();%0A        %7D
 %0A   

Move off deprecated DirectProcessor API #2136