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
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
2.1 http请求
编写拦截器
public class TraceWebInterceptor extends HandlerInterceptorAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(TraceWebInterceptor.class);
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
request.setAttribute("startTime", System.currentTimeMillis());
//traceOrigin、traceCaller、traceId
String 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MDC
MDC.put(TraceConstants.LOG_TRACE_ORIGIN, traceOrigin);
MDC.put(TraceConstants.LOG_TRACE_CALLER, traceCaller);
MDC.put(TraceConstants.LOG_TRACE_ID, traceId);
}
//IP
String 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);
}
@Override
public 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
@Value("${" + TraceConstants.CONFIG_TRACE_EXCLUDE_PATHS + ":}")
private String excludePaths;
@Bean
public TraceWebInterceptor traceWebInterceptor() {
return new TraceWebInterceptor();
}
@Override
public 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
return () -> {
if (context == null) {
MDC.clear();
} else {
MDC.setContextMap(context);
}
TraceUtil.loadTraceInfo();
try {
return callable.call();
} finally {
MDC.clear();
}
};
}
public static
return wrap(callable, MDC.getCopyOfContextMap());
}
public static Runnable wrap(final Runnable runnable, final Map
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
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
return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);
}
public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,
BlockingQueue
return new ThreadPoolExecutorMdcWrapper(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
}
public static ThreadPoolExecutor newThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,
BlockingQueue
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
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
}
public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,
BlockingQueue
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);
}
public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,
BlockingQueue
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, handler);
}
public ThreadPoolExecutorMdcWrapper(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,
BlockingQueue
RejectedExecutionHandler handler) {
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory, handler);
}
@Override
public void execute(Runnable task) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), result);
}
@Override
public
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public 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);
}
@Override
public void execute(Runnable task) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), result);
}
@Override
public
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 {
@Bean
public 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 {
@Override
public void execute(Runnable task) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public void execute(Runnable task, long startTimeout) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTimeout);
}
@Override
public
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public Future submit(Runnable task) {
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public ListenableFuture submitListenable(Runnable task) {
return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public
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);
}
@Override
protected
return super.decorateTask(WrapUtil.wrap(callable, MDC.getCopyOfContextMap()), task);
}
@Override
protected
return super.decorateTask(WrapUtil.wrap(runnable, MDC.getCopyOfContextMap()), task);
}
@Override
public ScheduledFuture schedule(Runnable command, long delay, TimeUnit unit) {
return super.schedule(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), delay, unit);
}
@Override
public 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 {
@Override
public ScheduledFuture schedule(Runnable task, Date startTime) {
return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime);
}
@Override
public ScheduledFuture schedule(Runnable task, Trigger trigger) {
return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), trigger);
}
@Override
public ScheduledFuture scheduleAtFixedRate(Runnable task, long period) {
return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), period);
}
@Override
public ScheduledFuture scheduleAtFixedRate(Runnable task, Date startTime, long period) {
return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime, period);
}
@Override
public 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 {
@Override
public void execute(Runnable task) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public void execute(Runnable task, long startTimeout) {
super.execute(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTimeout);
}
@Override
public
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public Future submit(Runnable task) {
return super.submit(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public ListenableFuture submitListenable(Runnable task) {
return super.submitListenable(WrapUtil.wrap(task, MDC.getCopyOfContextMap()));
}
@Override
public
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);
}
@Override
protected
return super.decorateTask(WrapUtil.wrap(callable, MDC.getCopyOfContextMap()), task);
}
@Override
protected
return super.decorateTask(WrapUtil.wrap(runnable, MDC.getCopyOfContextMap()), task);
}
@Override
public ScheduledFuture schedule(Runnable command, long delay, TimeUnit unit) {
return super.schedule(WrapUtil.wrap(command, MDC.getCopyOfContextMap()), delay, unit);
}
@Override
public 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 {
@Override
public ScheduledFuture schedule(Runnable task, Date startTime) {
return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime);
}
@Override
public ScheduledFuture schedule(Runnable task, Trigger trigger) {
return super.schedule(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), trigger);
}
@Override
public ScheduledFuture scheduleAtFixedRate(Runnable task, long period) {
return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), period);
}
@Override
public ScheduledFuture scheduleAtFixedRate(Runnable task, Date startTime, long period) {
return super.scheduleAtFixedRate(WrapUtil.wrap(task, MDC.getCopyOfContextMap()), startTime, period);
}
@Override
public 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);
@Override
public 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);
@Override
public Result invoke(Invoker invoker, Invocation invocation) throws RpcException {
//traceOrigin、traceCaller、traceId
String 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MDC
MDC.put(TraceConstants.LOG_TRACE_ORIGIN, traceOrigin);
MDC.put(TraceConstants.LOG_TRACE_CALLER, traceCaller);
MDC.put(TraceConstants.LOG_TRACE_ID, traceId);
}
//IP
String 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 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);
@Override
public 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;
}
@Override
public void onAcknowledgement(RecordMetadata metadata, Exception exception) {
}
@Override
public void close() {
}
@Override
public void configure(Map
}
}
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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