庆峰的博客

@EventListener
    public void listen(EurekaInstanceCanceledEvent event) {
        log.error("告警通知 [{}] 服务注销 timestamp [{}] serverId [{}]",
                event.getAppName(),
                event.getTimestamp(),
                event.getServerId());
        if (!event.isReplication()) {
            ServiceNotice serviceNotice = new ServiceNotice();
            serviceNotice.setTitle("告警通知 服务下线");
            serviceNotice.setAppName(event.getAppName());
            serviceNotice.setTimestamp(event.getTimestamp());
            serviceNotice.setServerId(event.getServerId());
            serviceNotice.setProfiles(active);
            alarmNoticeManage.createNotice(serviceNotice, "");
        }
    }

    @EventListener
    public void listen(EurekaInstanceRegisteredEvent event) {
        log.info("告警通知 [{}] 服务注册 timestamp [{}] id [{}] ipAddr [{}] ",
                event.getInstanceInfo().getAppName(),
                event.getTimestamp(),
                event.getInstanceInfo().getId(),
                event.getInstanceInfo().getIPAddr()
        );
        if (!event.isReplication()) {
            ServiceNotice serviceNotice = new ServiceNotice();
            serviceNotice.setTitle("告警通知 服务上线");
            serviceNotice.setAppName(event.getInstanceInfo().getAppName());
            serviceNotice.setTimestamp(event.getTimestamp());
            serviceNotice.setServerId(event.getInstanceInfo().getId());
            serviceNotice.setProfiles(active);
            alarmNoticeManage.createNotice(serviceNotice, "");
        }
    }

告警信息
工程名：z201-gateway
类路径：cn.z201.cloud.gateway.VlinkFrameworkGatewayApplicationTest
方法名：alarm
异常信息：java.lang.IllegalAccessException
异常追踪：
cn.z201.cloud.gateway.VlinkFrameworkGatewayApplicationTest.alarm(VlinkFrameworkGatewayApplicationTest.java:64)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)

/**
 * @author z201.coding@gmail.com
 **/
public interface HttpApiConstant {

    String X_REAL_IP = "x-real-ip";
    /**
     * 请求头跟踪id名。
     */
    String HTTP_HEADER_TRACE_ID = "AppTraceId";

    /**
     * 请求头
     */
    String HTTP_TOKEN_HEADER = "Authorization";

    /**
     * app租户
     */
    String APP_TENANT = "Tenant";

    String CLIENT_BUSINESS_GROUP_SOURCE = "Client-Business-Group-Source";

    String CLIENT_BUSINESS_SOURCE = "Client-Business-Source";

    String CLIENT_BUSINESS_ACTIVITY_SOURCE = "Client-Business-Activity-Source";

    String CLIENT_EVN_SOURCE = "Client-Env-Source";

    String CLIENT_PLATFORM_SOURCE = "Client-Platform-Source";

    String CLIENT_START_TIME = "Client-Start-Time";

    String CLIENT_VERSION_SOURCE = "Client-Version-Source";

}


/**
 * @author z201.coding@gmail.com
 * 自定义restTemplate拦截器
 * 这里可以把一些参数从应用层传到内部服务
 **/
@Slf4j
@ConditionalOnClass(WebMvcConfigurer.class)
public class MdcFeignInterceptorConfig implements RequestInterceptor, HttpApiConstant {

    public MdcFeignInterceptorConfig() {
        log.info("Loaded Z-REST-INTERCEPTOR [V1.0.0]");
    }

    @Override
    public void apply(RequestTemplate template) {
        try {
            HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes())
                    .getRequest();
            String xRealIp = request.getHeader(X_REAL_IP);
            String authentication = request.getHeader(HTTP_TOKEN_HEADER);
            String appTraceId = request.getHeader(HTTP_HEADER_TRACE_ID);
            String businessGroupSource = request.getHeader(CLIENT_BUSINESS_GROUP_SOURCE);
            String clientBusinessSource = request.getHeader(CLIENT_BUSINESS_SOURCE);
            String clientBusinessActivitySource = request.getHeader(CLIENT_BUSINESS_ACTIVITY_SOURCE);
            String clientEnvSource = request.getHeader(CLIENT_EVN_SOURCE);
            String clientPlatformSource = request.getHeader(CLIENT_PLATFORM_SOURCE);
            String clientStartTime = request.getHeader(CLIENT_START_TIME);
            String clientVersionSource = request.getHeader(CLIENT_VERSION_SOURCE);
            template.header(HttpHeaders.ACCEPT_ENCODING, "gzip");
            template.header(X_REAL_IP, xRealIp);
            template.header(HTTP_TOKEN_HEADER, authentication);
            template.header(CLIENT_BUSINESS_GROUP_SOURCE, businessGroupSource);
            template.header(CLIENT_BUSINESS_SOURCE, clientBusinessSource);
            template.header(CLIENT_BUSINESS_ACTIVITY_SOURCE, clientBusinessActivitySource);
            template.header(CLIENT_EVN_SOURCE, clientEnvSource);
            template.header(CLIENT_PLATFORM_SOURCE, clientPlatformSource);
            template.header(CLIENT_START_TIME, clientStartTime);
            template.header(CLIENT_VERSION_SOURCE, clientVersionSource);
            if (log.isDebugEnabled()) {
                Enumeration<String> headerNames = request.getHeaderNames();
                while (headerNames.hasMoreElements()) {
                    String name = headerNames.nextElement();
                    String value = request.getHeader(name);
                    log.debug("header {} - {}", name, value);
                }
            }
        } catch (Exception e) {
            log.error("template exception {}",e.getMessage());
        }
    }
}

package cn.z201.jvm;

public class Testing {

    public static void main(String[] args){
        System.out.println("Hello world!");
    }
}

javap -c -s -v Testing

Classfile /Users/z201/word/z201.github.io.code/java-learning/learn-jvm/src/test/java/cn/z201/jvm/Testing.class
  MD5 checksum b50deb6f6e7df9bb99585bc71b92d39b
  Compiled from "Testing.java"
public class cn.z201.jvm.Testing
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #6.#15         // java/lang/Object."<init>":()V
   #2 = Fieldref           #16.#17        // java/lang/System.out:Ljava/io/PrintStream;
   #3 = String             #18            // Hello world!
   #4 = Methodref          #19.#20        // java/io/PrintStream.println:(Ljava/lang/String;)V
   #5 = Class              #21            // cn/z201/jvm/Testing
   #6 = Class              #22            // java/lang/Object
   #7 = Utf8               <init>
   #8 = Utf8               ()V
   #9 = Utf8               Code
  #10 = Utf8               LineNumberTable
  #11 = Utf8               main
  #12 = Utf8               ([Ljava/lang/String;)V
  #13 = Utf8               SourceFile
  #14 = Utf8               Testing.java
  #15 = NameAndType        #7:#8          // "<init>":()V
  #16 = Class              #23            // java/lang/System
  #17 = NameAndType        #24:#25        // out:Ljava/io/PrintStream;
  #18 = Utf8               Hello world!
  #19 = Class              #26            // java/io/PrintStream
  #20 = NameAndType        #27:#28        // println:(Ljava/lang/String;)V
  #21 = Utf8               cn/z201/jvm/Testing
  #22 = Utf8               java/lang/Object
  #23 = Utf8               java/lang/System
  #24 = Utf8               out
  #25 = Utf8               Ljava/io/PrintStream;
  #26 = Utf8               java/io/PrintStream
  #27 = Utf8               println
  #28 = Utf8               (Ljava/lang/String;)V
{
  public cn.z201.jvm.Testing();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
      LineNumberTable:
        line 5: 0

  public static void main(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
         3: ldc           #3                  // String Hello world!
         5: invokevirtual #4                  // Method java/io/PrintStream.println:(Ljava/lang/String;)V
         8: return
      LineNumberTable:
        line 8: 0
        line 9: 8
}
SourceFile: "Testing.java"

java.lang.OutOfMemoryError: Java heap space