Spring/Spring boot项目接入traceId

简介

分布式系统中，由多个服务构成，每个请求路由过来后，会在多个服务中留下追踪ID，可以基于此追踪ID排查问题，分析请求的执行链路。

业界也有比较成熟的链路追踪ID方案，比如Skywalking，它基于动态字节码技术，本身会增加系统的复杂性，以及它需要单独部署服务对信息进行采集，这对于ToB资源敏感的场景下并不适用。traceID是基于自身必需框架开发的，主要技术是日志MDC、跨线程包装、中间件拦截器，所以可以几乎不增加任何额外资源开销。

本次traceId支持dubbo，kafka，http请求，线程池

接入步骤

1、日志中增加traceId变量

logback.xml日志配置，当然你也可以自定义格式，变量%X{traceId}是追踪ID替换值：

若框架使用log4j，在日志格式中增加%X{traceId}变量

<property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - [%X{traceId}] - %msg%n"/>

2、代码实现

2.0 依赖，不同实现按需添加依赖，例如kafka相关接入traceId，项目本身已经引入kafka

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId>
</dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId>
</dependency>

2.1 http请求

编写拦截器

public class TraceWebInterceptor extends HandlerInterceptorAdapter {private static final Logger LOGGER = LoggerFactory.getLogger(TraceWebInterceptor.class);@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {request.setAttribute("startTime", System.currentTimeMillis());//traceOrigin、traceCaller、traceIdString traceOrigin = request.getHeader(TraceConstants.LOG_TRACE_ORIGIN);String traceCaller = request.getHeader(TraceConstants.LOG_TRACE_CALLER);String traceId = request.getHeader(TraceConstants.LOG_TRACE_ID);//如果不存在traceId需要生成if (StringUtils.isBlank(traceId)) {boolean generate = TraceUtil.loadTraceInfo();if(generate) {LOGGER.debug("[生成追踪信息]" + TraceUtil.getTraceInfoString());}}else {//设置MDCMDC.put(TraceConstants.LOG_TRACE_ORIGIN, traceOrigin);MDC.put(TraceConstants.LOG_TRACE_CALLER, traceCaller);MDC.put(TraceConstants.LOG_TRACE_ID, traceId);}//IPString traceIp = IpUtil.getIp(request);MDC.put(TraceConstants.LOG_TRACE_IP, traceIp);//响应返回response.setHeader(TraceConstants.LOG_TRACE_ID, TraceUtil.getTraceId());return super.preHandle(request, response, handler);}@Overridepublic void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws IOException {if (LOGGER.isInfoEnabled()) {long upmsStartTime = (long) request.getAttribute("startTime");long upmsEndTime = System.currentTimeMillis();long upmsIntervalTime = upmsEndTime - upmsStartTime;LOGGER.info("{} {}接口耗时{}毫秒", request.getRequestURL(), request.getMethod(), upmsIntervalTime);}MDC.clear();}

编写Config类, 将拦截器TraceWebInterceptor添加到容器

@Configuration
@ConditionalOnClass({HandlerInterceptorAdapter.class, MDC.class, HttpServletRequest.class})
public class TraceWebAutoConfiguration implements WebMvcConfigurer {private static List<String> EXCLUDE_PATHS = new ArrayList<>();@Value("${" + TraceConstants.CONFIG_TRACE_EXCLUDE_PATHS + ":}")private String excludePaths;@Beanpublic TraceWebInterceptor traceWebInterceptor() {return new TraceWebInterceptor();}@Overridepublic void addInterceptors(InterceptorRegistry registry) {EXCLUDE_PATHS.add("/error");EXCLUDE_PATHS.add("/actuator/**");if (StringUtils.isNotBlank(excludePaths)) {if (excludePaths.contains(",")) {String[] split = excludePaths.split(",");EXCLUDE_PATHS.addAll(Arrays.asList(split));} else {EXCLUDE_PATHS.add(excludePaths);}}//该方式不能过全部过滤掉registry.addInterceptor(traceWebInterceptor()).order(-100).excludePathPatterns(EXCLUDE_PATHS);}
}

工具类

public class IpUtil {private static final String UNKNOWN = "unknown";public static String getIp(HttpServletRequest request) {if (request == null) {return UNKNOWN;}String ip = request.getHeader("x-forwarded-for");if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {ip = request.getHeader("Proxy-Client-IP");}if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {ip = request.getHeader("X-Forwarded-For");}if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {ip = request.getHeader("WL-Proxy-Client-IP");}if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {ip = request.getHeader("X-Real-IP");}if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();}return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip;}
}public class TraceConstants {public static final String LOG_TRACE_ORIGIN = "traceOrigin";public static final String LOG_TRACE_CALLER = "traceCaller";public static final String LOG_TRACE_IP = "traceIp";public static final String LOG_TRACE_ID = "traceId";public static final String CONFIG_TRACE_EXCLUDE_PATHS = "trace.exclude.paths";public TraceConstants() {}
}import java.util.UUID;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.MDC;public class TraceUtil {private static boolean simbaHttpClientInterceptorFlag = true;private static boolean sdkInterceptorFlag = false;private static String applicationName;public TraceUtil() {}public static void setApplicationName(String applicationName) {TraceUtil.applicationName = applicationName;}public static String getApplicationName() {return applicationName;}public static boolean getSimbaHttpClientInterceptorFlag() {return simbaHttpClientInterceptorFlag;}public static void setSimbaHttpClientInterceptorFlag(boolean simbaHttpClientInterceptorFlag) {TraceUtil.simbaHttpClientInterceptorFlag = simbaHttpClientInterceptorFlag;}public static boolean getSdkInterceptorFlag() {return sdkInterceptorFlag;}public static void setSdkInterceptorFlag(boolean sdkInterceptorFlag) {TraceUtil.sdkInterceptorFlag = sdkInterceptorFlag;}public static void setTraceCaller(String traceCaller) {MDC.put("traceCaller", traceCaller);}public static String getTraceCaller() {return MDC.get("traceCaller");}public static void setTraceOrigin(String traceOrigin) {MDC.put("traceOrigin", traceOrigin);}public static String getTraceOrigin() {return MDC.get("traceOrigin");}public static void setTraceId(String traceId) {MDC.put("traceId", traceId);}public static void removeTraceId() {MDC.remove("traceId");}public static void clearMdc() {MDC.clear();}public static String getTraceId() {return MDC.get("traceId");}public static String genTraceId() {return UUID.randomUUID().toString().replace("-", "");}public static String getTraceIp() {return MDC.get("traceIp");}public static void setTraceIp(String traceIp) {MDC.put("traceIp", traceIp);}public static boolean loadTraceInfo() {boolean generate = false;String traceId = getTraceId();if (StringUtils.isBlank(traceId)) {traceId = genTraceId();generate = true;}setTraceId(traceId);return generate;}public static String getTraceInfoString() {return "TraceId:" + getTraceId() + ". traceCaller:" + getTraceCaller() + ". traceOrigin:" + getTraceOrigin();}
}import org.slf4j.MDC;import java.util.Map;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinTask;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;public class WrapUtil {public static <T> Callable<T> wrap(final Callable<T> callable, final Map<String, String> context) {return () -> {if (context == null) {MDC.clear();} else {MDC.setContextMap(context);}TraceUtil.loadTraceInfo();try {return callable.call();} finally {MDC.clear();}};}public static <T> Callable<T> wrap(final Callable<T> callable) {return wrap(callable, MDC.getCopyOfContextMap());}public static Runnable wrap(final Runnable runnable, final Map<String, String> context) {return () -> {if (context == null) {MDC.clear();} else {MDC.setContextMap(context);}TraceUtil.loadTraceInfo();try {runnable.run();} finally {MDC.clear();}};}public static Runnable wrap(final Runnable runnable) {return wrap(runnable, MDC.getCopyOfContextMap());}public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory,RejectedExecutionHandler handler) {return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory, handler);}public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory) {return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);}public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue) {return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);}public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue,RejectedExecutionHandler handler) {return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, handler);}public static ForkJoinPool newForkJoinPool() {return new ForkJoinPoolMdcWrapper();}public static class ThreadPoolExecutorMdcWrapper extends ThreadPoolExecutor {public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue) {super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);}public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory) {super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);}public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue, RejectedExecutionHandler handler) {super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, handler);}public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory,RejectedExecutionHandler handler) {super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory, handler);}@Overridepublic void execute(Runnable task) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic <T> Future<T> submit(Runnable task, T result) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), result);}@Overridepublic <T> Future<T> submit(Callable<T> task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic Future<?> submit(Runnable task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}}public static class ForkJoinPoolMdcWrapper extends ForkJoinPool {public ForkJoinPoolMdcWrapper() {super();}public ForkJoinPoolMdcWrapper(int parallelism) {super(parallelism);}public ForkJoinPoolMdcWrapper(int parallelism, ForkJoinWorkerThreadFactory factory,Thread.UncaughtExceptionHandler handler, boolean asyncMode) {super(parallelism, factory, handler, asyncMode);}@Overridepublic void execute(Runnable task) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic <T> ForkJoinTask<T> submit(Runnable task, T result) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), result);}@Overridepublic <T> ForkJoinTask<T> submit(Callable<T> task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}}
}

2.2 Spring中的@Async注解中的线程池

@Configuration
public class TaskExecutorConfig {@Beanpublic TaskExecutor taskExecutor() {ThreadPoolTaskExecutor executor = TraceSpringTraceWrapUtil.newThreadPoolTaskExecutor();// 设置核心线程数executor.setCorePoolSize(Runtime.getRuntime().availableProcessors());// 设置最大线程数executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 10);// 设置队列容量executor.setQueueCapacity(Runtime.getRuntime().availableProcessors() * 10);// 设置线程活跃时间（秒）executor.setKeepAliveSeconds(10);// 设置默认线程名称executor.setThreadNamePrefix("scheduled-");// 设置拒绝策略executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());// 等待所有任务结束后再关闭线程池executor.setWaitForTasksToCompleteOnShutdown(true);executor.initialize();return executor;}}

相关工具类 

import com.startdt.license.util.WrapUtil;
import org.slf4j.MDC;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.util.concurrent.ListenableFuture;import java.util.Date;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.RunnableScheduledFuture;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;public class TraceSpringTraceWrapUtil extends WrapUtil {public static class ThreadPoolTaskExecutorMdcWrapper extends ThreadPoolTaskExecutor {@Overridepublic void execute(Runnable task) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic void execute(Runnable task, long startTimeout) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTimeout);}@Overridepublic <T> Future<T> submit(Callable<T> task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic Future<?> submit(Runnable task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic ListenableFuture<?> submitListenable(Runnable task) {return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic <T> ListenableFuture<T> submitListenable(Callable<T> task) {return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}}public static class ScheduledThreadPoolTaskExecutorMdcWrapper extends ScheduledThreadPoolExecutor {public ScheduledThreadPoolTaskExecutorMdcWrapper(int corePoolSize) {super(corePoolSize);}public ScheduledThreadPoolTaskExecutorMdcWrapper(int corePoolSize, ThreadFactory threadFactory) {super(corePoolSize, threadFactory);}@Overrideprotected <V> RunnableScheduledFuture<V> decorateTask(Callable<V> callable, RunnableScheduledFuture<V> task) {return super.decorateTask(WrapUtil.wrap(callable, MDC.getCopyOfContextMap()), task);}@Overrideprotected <V> RunnableScheduledFuture<V> decorateTask(Runnable runnable, RunnableScheduledFuture<V> task) {return super.decorateTask(WrapUtil.wrap(runnable, MDC.getCopyOfContextMap()), task);}@Overridepublic ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {return super.schedule(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), delay, unit);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) {return super.scheduleAtFixedRate(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), initialDelay, period, unit);}}public static class ThreadPoolTaskSchedulerWrapper extends ThreadPoolTaskScheduler {@Overridepublic ScheduledFuture<?> schedule(Runnable task, Date startTime) {return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime);}@Overridepublic ScheduledFuture<?> schedule(Runnable task, Trigger trigger) {return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), trigger);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable task, long period) {return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), period);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable task, Date startTime, long period) {return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime, period);}@Overridepublic ScheduledFuture<?> scheduleWithFixedDelay(Runnable task, long delay) {return super.scheduleWithFixedDelay(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), delay);}}public static ThreadPoolTaskExecutor newThreadPoolTaskExecutor() {return new ThreadPoolTaskExecutorMdcWrapper();}public static ScheduledThreadPoolExecutor newScheduledThreadPoolExecutor(int corePoolSize) {return new ScheduledThreadPoolTaskExecutorMdcWrapper(corePoolSize);}public static ScheduledThreadPoolExecutor newScheduledThreadPoolExecutor(int corePoolSize, ThreadFactory threadFactory) {return new ScheduledThreadPoolTaskExecutorMdcWrapper(corePoolSize, threadFactory);}public static ThreadPoolTaskScheduler newThreadPoolTaskScheduler() {return new ThreadPoolTaskSchedulerWrapper();}}

2.3 spring线程池

import com.startdt.license.util.WrapUtil;
import org.slf4j.MDC;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.util.concurrent.ListenableFuture;import java.util.Date;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.RunnableScheduledFuture;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;public class TraceSpringTraceWrapUtil extends WrapUtil {public static class ThreadPoolTaskExecutorMdcWrapper extends ThreadPoolTaskExecutor {@Overridepublic void execute(Runnable task) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic void execute(Runnable task, long startTimeout) {super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTimeout);}@Overridepublic <T> Future<T> submit(Callable<T> task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic Future<?> submit(Runnable task) {return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic ListenableFuture<?> submitListenable(Runnable task) {return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}@Overridepublic <T> ListenableFuture<T> submitListenable(Callable<T> task) {return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));}}public static class ScheduledThreadPoolTaskExecutorMdcWrapper extends ScheduledThreadPoolExecutor {public ScheduledThreadPoolTaskExecutorMdcWrapper(int corePoolSize) {super(corePoolSize);}public ScheduledThreadPoolTaskExecutorMdcWrapper(int corePoolSize, ThreadFactory threadFactory) {super(corePoolSize, threadFactory);}@Overrideprotected <V> RunnableScheduledFuture<V> decorateTask(Callable<V> callable, RunnableScheduledFuture<V> task) {return super.decorateTask(WrapUtil.wrap(callable, MDC.getCopyOfContextMap()), task);}@Overrideprotected <V> RunnableScheduledFuture<V> decorateTask(Runnable runnable, RunnableScheduledFuture<V> task) {return super.decorateTask(WrapUtil.wrap(runnable, MDC.getCopyOfContextMap()), task);}@Overridepublic ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {return super.schedule(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), delay, unit);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) {return super.scheduleAtFixedRate(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), initialDelay, period, unit);}}public static class ThreadPoolTaskSchedulerWrapper extends ThreadPoolTaskScheduler {@Overridepublic ScheduledFuture<?> schedule(Runnable task, Date startTime) {return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime);}@Overridepublic ScheduledFuture<?> schedule(Runnable task, Trigger trigger) {return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), trigger);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable task, long period) {return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), period);}@Overridepublic ScheduledFuture<?> scheduleAtFixedRate(Runnable task, Date startTime, long period) {return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime, period);}@Overridepublic ScheduledFuture<?> scheduleWithFixedDelay(Runnable task, long delay) {return super.scheduleWithFixedDelay(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), delay);}}public static ThreadPoolTaskExecutor newThreadPoolTaskExecutor() {return new ThreadPoolTaskExecutorMdcWrapper();}public static ScheduledThreadPoolExecutor newScheduledThreadPoolExecutor(int corePoolSize) {return new ScheduledThreadPoolTaskExecutorMdcWrapper(corePoolSize);}public static ScheduledThreadPoolExecutor newScheduledThreadPoolExecutor(int corePoolSize, ThreadFactory threadFactory) {return new ScheduledThreadPoolTaskExecutorMdcWrapper(corePoolSize, threadFactory);}public static ThreadPoolTaskScheduler newThreadPoolTaskScheduler() {return new ThreadPoolTaskSchedulerWrapper();}}

2.4 dubbo rpc

@Activate(group = {DubboConstants.CONSUMER} , order = -9999)
public class TraceDubboConsumerFilter implements Filter {private Logger logger = LoggerFactory.getLogger(TraceDubboConsumerFilter.class);@Overridepublic Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException {String traceId = TraceUtil.getTraceId();String traceCaller = TraceUtil.getTraceCaller();String traceOrigin = TraceUtil.getTraceOrigin();if(StringUtils.isBlank(traceId)) {traceId = TraceUtil.genTraceId();traceCaller = TraceUtil.getApplicationName();traceOrigin = TraceUtil.getApplicationName();logger.debug("[仅生成追踪信息]traceId:{}. traceCaller:{}. traceOrigin:{}", traceId, traceCaller, traceOrigin);}RpcContext.getContext().setAttachment(TraceConstants.LOG_TRACE_ID, traceId);RpcContext.getContext().setAttachment(TraceConstants.LOG_TRACE_CALLER, traceCaller);RpcContext.getContext().setAttachment(TraceConstants.LOG_TRACE_ORIGIN, traceOrigin);return invoker.invoke(invocation);}
}
@Activate(group = {DubboConstants.PROVIDER}, order = -10000)
public class TraceDubboProviderFilter implements Filter {private Logger logger = LoggerFactory.getLogger(TraceDubboConsumerFilter.class);@Overridepublic Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException {//traceOrigin、traceCaller、traceIdString traceId = invocation.getAttachment(TraceConstants.LOG_TRACE_ID);String traceCaller = invocation.getAttachment(TraceConstants.LOG_TRACE_CALLER);String traceOrigin = invocation.getAttachment(TraceConstants.LOG_TRACE_ORIGIN);//如果不存在traceId需要生成if (StringUtils.isBlank(traceId)) {boolean generate = TraceUtil.loadTraceInfo();if(generate) {logger.info("[生成追踪信息]" + TraceUtil.getTraceInfoString());}}else {//设置MDCMDC.put(TraceConstants.LOG_TRACE_ORIGIN, traceOrigin);MDC.put(TraceConstants.LOG_TRACE_CALLER, traceCaller);MDC.put(TraceConstants.LOG_TRACE_ID, traceId);}//IPString clientIp = RpcContext.getContext().getRemoteHost();MDC.put(TraceConstants.LOG_TRACE_IP, clientIp);try {return invoker.invoke(invocation);} finally {MDC.clear();}}
}

2.5 kafka

生产者：

a:增加配置项：

spring:kafka:producer:properties:interceptor:classes: com.trace.kafka.TraceProducerInterceptor

b.kafkaTemplateAutoConfig代码中增加

if (StringUtils.isNotBlank(producerInterceptors)) {props.put(ProducerConfig.INTERCEPTOR_CLASSES_CONFIG, producerInterceptors);
}

消费者前增加代码：

TraceConsumerUtil.trace(consumerRecord);

 消费者工具类

import com.startdt.simba.boot.common.constants.TraceConstants;
import com.startdt.simba.boot.common.utils.TraceUtil;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.common.header.Header;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;public class TraceConsumerUtil {private static final Logger LOGGER = LoggerFactory.getLogger(TraceConsumerUtil.class);public static void trace(ConsumerRecord consumerRecord) {try {if(consumerRecord == null) {return;}Iterable<Header> headers = consumerRecord.headers().headers(TraceConstants.LOG_TRACE_ID);Header firstHeader = null;for(Header header : headers) {if(firstHeader != null) {break;}if(header != null) {firstHeader = header;}}if(firstHeader == null) {TraceUtil.setTraceId(TraceUtil.genTraceId());}else {TraceUtil.setTraceId(new String(firstHeader.value()));}}catch (Exception ex) {LOGGER.warn("Kafka tracking ID setting failed, reason:" + ex.getMessage(), ex);}}
}

 生产者拦截器

public class TraceProducerInterceptor implements ProducerInterceptor {private static final Logger LOGGER = LoggerFactory.getLogger(TraceProducerInterceptor.class);@Overridepublic ProducerRecord onSend(ProducerRecord record) {try {TraceUtil.loadTraceInfo();String traceId = TraceUtil.getTraceId();if(StrUtil.isNotBlank(traceId)) {record.headers().add(TraceConstants.LOG_TRACE_ID, traceId.getBytes());}}catch (Exception ex) {LOGGER.warn("Kafka tracking ID setting failed, reason:" + ex.getMessage(), ex);}return record;}@Overridepublic void onAcknowledgement(RecordMetadata metadata, Exception exception) {}@Overridepublic void close() {}@Overridepublic void configure(Map<String, ?> configs) {}
}

2.6 线程池使用步骤

替换ThreadPoolExecutor为包装类

    private static ThreadPoolExecutor executor = new TraceWrapUtil.ThreadPoolExecutorMdcWrapper(defaultPoolSize, defaultPoolSize,10L,TimeUnit.SECONDS,new ArrayBlockingQueue<>(1000),new NameThreadFactory("warn.message.handler."), new AbortPolicy());

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