app.myoss.cloud.apm.spring.cloud.sleuth.trace

Class ApplicationEventTracer

java.lang.Object

app.myoss.cloud.apm.spring.cloud.sleuth.trace.ApplicationEventTracer

public class ApplicationEventTracer
extends Object

应用事件调用链

Since:

2018年4月12日 下午1:50:20

Author:

Jerry.Chen

See Also:

TraceAutoConfiguration, SleuthLogAutoConfiguration, Slf4jCurrentTraceContext

Constructor Summary

Constructors

Constructor and Description
ApplicationEventTracer()

Method Summary

Modifier and Type	Method and Description
static String	getSpanId() 获取当前线程中保存的spanId
static String	getTraceId() 获取当前线程中保存的traceId
long	nextId() Generates a new 64-bit ID, taking care to dodge zero which can be confused with absent
void	replace(String key, String value) 更新 MDC 上下文中的信息
void	setTraceId(String traceId) 设置 traceId 信息到 MDC 上下文中
String	startApplication() 开始记录应用启动事件
void	startedApplication(org.springframework.context.ConfigurableApplicationContext applicationContext) 结束记录应用启动事件

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ApplicationEventTracer

public ApplicationEventTracer()

Method Detail

nextId

public long nextId()

Generates a new 64-bit ID, taking care to dodge zero which can be confused with absent

Returns:

64-bit ID

setTraceId

public void setTraceId(String traceId)

设置 traceId 信息到 MDC 上下文中

Parameters:

traceId - traceId

replace

public void replace(String key,
                    @Nullable
                    String value)

更新 MDC 上下文中的信息

Parameters:

key - property key

value - property value，如果为 null 则删除这个 key

startApplication

public String startApplication()

开始记录应用启动事件

Returns:

生成的traceId信息

startedApplication

public void startedApplication(org.springframework.context.ConfigurableApplicationContext applicationContext)

结束记录应用启动事件

Parameters:

applicationContext - applicationContext上下文，用于将当前对象注册到上下文中

getSpanId

public static String getSpanId()

获取当前线程中保存的spanId

优先取 ApmConstants.LEGACY_SPAN_ID_NAME

如果没有上面这个key，才取这个key的值 ApmConstants.SPAN_ID_NAME

Returns:

MDC中的spanId信息

getTraceId

public static String getTraceId()

获取当前线程中保存的traceId

优先取 ApmConstants.LEGACY_TRACE_ID_NAME

如果没有上面这个key，才取这个key的值 ApmConstants.TRACE_ID_NAME

Returns:

MDC中的traceId信息