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/*
 * Copyright 2013-2023 the original author or authors.
 *
 * 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
 *
 *      https://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.cloud.nacos.endpoint;

import com.alibaba.nacos.api.config.ConfigService;

import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;

/**
 * The {@link HealthIndicator} for Nacos Config.
 *
 * @author xiaojing
 * @author Mercy
 */
public class NacosConfigHealthIndicator extends AbstractHealthIndicator {

	private final ConfigService configService;

	/**
	 * status up .
	 */
	private final String STATUS_UP = "UP";

	/**
	 * status down .
	 */
	private final String STATUS_DOWN = "DOWN";

	public NacosConfigHealthIndicator(ConfigService configService) {
		this.configService = configService;
	}

	@Override
	protected void doHealthCheck(Health.Builder builder) throws Exception {
		// Just return "UP" or "DOWN"
		String status = configService.getServerStatus();
		// Set the status to Builder
		builder.status(status);
		switch (status) {
		case STATUS_UP -> builder.up();
		case STATUS_DOWN -> builder.down();
		default -> builder.unknown();
		}
	}

}