com.alibaba.nacos.api.naming.pojo.healthcheck.HealthCheckerFactory 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.api.naming.pojo.healthcheck;
import com.alibaba.nacos.api.exception.runtime.NacosDeserializationException;
import com.alibaba.nacos.api.exception.runtime.NacosSerializationException;
import com.alibaba.nacos.api.naming.pojo.healthcheck.AbstractHealthChecker.None;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.NamedType;
import java.io.IOException;
/**
* health checker factory.
*
* @author yangyi
*/
public class HealthCheckerFactory {
private static final ObjectMapper MAPPER = new ObjectMapper();
static {
MAPPER.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
}
/**
* Register new sub type of health checker to factory for serialize and deserialize.
*
* @param extendHealthChecker extend health checker
*/
public static void registerSubType(AbstractHealthChecker extendHealthChecker) {
registerSubType(extendHealthChecker.getClass(), extendHealthChecker.getType());
}
/**
* Register new sub type of health checker to factory for serialize and deserialize.
*
* @param extendHealthCheckerClass extend health checker
* @param typeName typeName of health checker
*/
public static void registerSubType(Class extendHealthCheckerClass,
String typeName) {
MAPPER.registerSubtypes(new NamedType(extendHealthCheckerClass, typeName));
}
/**
* Create default {@link None} health checker.
*
* @return new none health checker
*/
public static None createNoneHealthChecker() {
return new None();
}
/**
* Deserialize and create an instance of health checker.
*
* @param jsonString json string of health checker
* @return new instance
*/
public static AbstractHealthChecker deserialize(String jsonString) {
try {
return MAPPER.readValue(jsonString, AbstractHealthChecker.class);
} catch (IOException e) {
throw new NacosDeserializationException(AbstractHealthChecker.class, e);
}
}
/**
* Serialize an instance of health checker to json.
*
* @param healthChecker health checker instance
* @return son string after serializing
*/
public static String serialize(AbstractHealthChecker healthChecker) {
try {
return MAPPER.writeValueAsString(healthChecker);
} catch (JsonProcessingException e) {
throw new NacosSerializationException(healthChecker.getClass(), e);
}
}
}