com.linecorp.armeria.internal.NoopAttribute.java Source code

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Here is the source code for com.linecorp.armeria.internal.NoopAttribute.java

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/*
 * Copyright 2016 LINE Corporation
 *
 * LINE Corporation licenses this file to you 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 com.linecorp.armeria.internal;

import static java.util.Objects.requireNonNull;

import io.netty.util.Attribute;
import io.netty.util.AttributeKey;

public final class NoopAttribute<T> implements Attribute<T> {

    private final AttributeKey<T> key;

    public NoopAttribute(AttributeKey<T> key) {
        this.key = requireNonNull(key, "key");
    }

    @Override
    public AttributeKey<T> key() {
        return key;
    }

    @Override
    public T get() {
        return null;
    }

    @Override
    public void set(T value) {
    }

    @Override
    public T getAndSet(T value) {
        return null;
    }

    @Override
    public T setIfAbsent(T value) {
        return null;
    }

    @Override
    public T getAndRemove() {
        return null;
    }

    @Override
    public boolean compareAndSet(T oldValue, T newValue) {
        return true;
    }

    @Override
    public void remove() {
    }

    @Override
    public String toString() {
        return "NoopAttribute(" + key + ')';
    }
}