com.alibaba.nacos.naming.interceptor.AbstractNamingInterceptorChain Maven / Gradle / Ivy
/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* 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 com.alibaba.nacos.naming.interceptor;
import com.alibaba.nacos.common.spi.NacosServiceLoader;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
/**
* Abstract Naming Interceptor Chain.
*
* @author xiweng.yy
*/
public abstract class AbstractNamingInterceptorChain
implements NacosNamingInterceptorChain {
private final List> interceptors;
protected AbstractNamingInterceptorChain(Class> clazz) {
this.interceptors = new LinkedList<>();
interceptors.addAll(NacosServiceLoader.load(clazz));
interceptors.sort(Comparator.comparingInt(NacosNamingInterceptor::order));
}
/**
* Get all interceptors.
*
* @return interceptors list
*/
protected List> getInterceptors() {
return interceptors;
}
@Override
public void addInterceptor(NacosNamingInterceptor interceptor) {
interceptors.add(interceptor);
interceptors.sort(Comparator.comparingInt(NacosNamingInterceptor::order));
}
@Override
public void doInterceptor(T object) {
for (NacosNamingInterceptor each : interceptors) {
if (!each.isInterceptType(object.getClass())) {
continue;
}
if (each.intercept(object)) {
object.afterIntercept();
return;
}
}
object.passIntercept();
}
}