package com.soa.microservice.core;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * 服务实例信息类
 * 用于存储和管理微服务实例的基本信息
 */
public class ServiceInstance {
    private String instanceId;
    private String serviceName;
    private String host;
    private int port;
    private boolean healthy;
    private long lastHeartbeat;
    private Map<String, String> metadata = new ConcurrentHashMap<>();

    public ServiceInstance(String instanceId, String serviceName, String host, int port) {
        this.instanceId = instanceId;
        this.serviceName = serviceName;
        this.host = host;
        this.port = port;
        this.healthy = true;
        this.lastHeartbeat = System.currentTimeMillis();
    }

    // Getters and setters
    public String getInstanceId() {
        return instanceId;
    }

    public String getServiceName() {
        return serviceName;
    }

    public String getHost() {
        return host;
    }

    public int getPort() {
        return port;
    }

    public boolean isHealthy() {
        return healthy;
    }

    public void setHealthy(boolean healthy) {
        this.healthy = healthy;
    }

    public long getLastHeartbeat() {
        return lastHeartbeat;
    }

    public void updateHeartbeat() {
        this.lastHeartbeat = System.currentTimeMillis();
    }

    public Map<String, String> getMetadata() {
        return metadata;
    }

    public void addMetadata(String key, String value) {
        this.metadata.put(key, value);
    }

    public String getMetadata(String key) {
        return this.metadata.get(key);
    }

    @Override
    public String toString() {
        return "ServiceInstance{" +
                "instanceId='" + instanceId + '\'' +
                ", serviceName='" + serviceName + '\'' +
                ", host='" + host + '\'' +
                ", port=" + port +
                ", healthy=" + healthy +
                "}";
    }
}