EventConsumer.java

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.nereids.metrics;

import java.util.Objects;

/**
 * consumer
 */
public abstract class EventConsumer {
    private final Class<? extends Event> targetClass;

    protected EventConsumer(Class<? extends Event> targetClass) {
        this.targetClass = targetClass;
    }

    public abstract void consume(Event event);

    public Class<? extends Event> getTargetClass() {
        return targetClass;
    }

    public void close() {}

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        EventConsumer consumer = (EventConsumer) o;
        return Objects.equals(targetClass, consumer.targetClass);
    }

    @Override
    public int hashCode() {
        return Objects.hash(targetClass);
    }
}