com.alibaba.nacos.common.remote.PayloadRegistry Maven / Gradle / Ivy
/*
* Copyright 1999-2020 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.common.remote;
import com.alibaba.nacos.api.remote.Payload;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import java.util.ServiceLoader;
/**
* payload registry,Define basic scan behavior request and response.
*
* @author liuzunfei
* @author hujun
* @version $Id: PayloadRegistry.java, v 0.1 2020年09月01日 10:56 AM liuzunfei Exp $
*/
public class PayloadRegistry {
private static final Map> REGISTRY_REQUEST = new HashMap<>();
static boolean initialized = false;
public static void init() {
scan();
}
private static synchronized void scan() {
if (initialized) {
return;
}
ServiceLoader payloads = ServiceLoader.load(Payload.class);
for (Payload payload : payloads) {
register(payload.getClass().getSimpleName(), payload.getClass());
}
initialized = true;
}
static void register(String type, Class clazz) {
if (Modifier.isAbstract(clazz.getModifiers())) {
return;
}
if (REGISTRY_REQUEST.containsKey(type)) {
throw new RuntimeException(String.format("Fail to register, type:%s ,clazz:%s ", type, clazz.getName()));
}
REGISTRY_REQUEST.put(type, clazz);
}
public static Class getClassByType(String type) {
return REGISTRY_REQUEST.get(type);
}
}