com.github.panhongan.utils.host.HostUtils Maven / Gradle / Ivy

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package com.github.panhongan.utils.host;

import javax.annotation.Nonnull;
import java.net.InetAddress;
import java.util.function.Supplier;

/**
 * lalalu plus
 */
public class HostUtils {

	private static Supplier hostNameSupplier = () -> getHostExec();

	private static Supplier ipSupplier = () -> getIpExec();

	@Nonnull
	public static String getHostName() {
		return hostNameSupplier.get();
	}

	@Nonnull
	public static String getIp() {
		return ipSupplier.get();
	}

	private static String getHostExec() {
		try {
			InetAddress host = InetAddress.getLocalHost();
			return (host != null ? host.getHostName() : null);
		} catch (Throwable t) {
			throw new RuntimeException(t);
		}
	}

	private static String getIpExec() {
		try {
			return InetAddress.getByName(getHostName()).getHostAddress();
		} catch (Throwable t) {
            throw new RuntimeException(t);
		}
	}
}