com.breuninger.boot.status.configuration.SystemInfoConfiguration Maven / Gradle / Ivy

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package com.breuninger.boot.status.configuration;

import java.net.InetAddress;
import java.net.UnknownHostException;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;

import com.breuninger.boot.status.domain.SystemInfo;

@Configuration
public class SystemInfoConfiguration {

  private static final String defaultHostname;

  static {
    String localHost = null;
    try {
      localHost = InetAddress.getLocalHost().getHostName();
    } catch (final UnknownHostException ignored) {
    }
    defaultHostname = localHost;
  }

  @Value("${HOSTNAME:}")
  private String hostname;
  @Value("${server.hostname:}")
  private String envhostname;
  @Value("${server.port:8080}")
  private int port;

  @Bean
  @ConditionalOnMissingBean(SystemInfo.class)
  public SystemInfo systemInfo() {
    return SystemInfo.systemInfo(hostname(), port);
  }

  private String hostname() {
    if (!StringUtils.isEmpty(envhostname)) {
      return envhostname;
    }
    if (!StringUtils.isEmpty(hostname)) {
      return hostname;
    }
    return defaultHostname;
  }
}