net.wicp.tams.common.tracer

类 SpanHelper

java.lang.Object

net.wicp.tams.common.tracer.SpanHelper

public class SpanHelper
extends Object

构造器概要

构造器

构造器和说明
SpanHelper()

方法概要

限定符和类型	方法和说明
static Span	attachSpan(BigInteger traceId, BigInteger spanId, String name) Attach to an existing span.
static com.google.common.base.Optional<Span>	currentSpan()
static Sampling	getSampler()
static void	setSampler(Sampling sampler)
static Span	startSpan(BigInteger traceId, BigInteger parentSpanId, String name) Starts a new span under the specified trace and parent spanId.
static Span	startSpan(String name) Starts a new span within a trace.
static Span	startTrace(String name) Starts a new trace.

从类继承的方法 java.lang.Object

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

构造器详细资料

SpanHelper

public SpanHelper()

方法详细资料

getSampler

public static Sampling getSampler()

setSampler

public static void setSampler(Sampling sampler)

startTrace

public static Span startTrace(String name)

Starts a new trace.

参数:

name - Name to be given to the root span in the trace.

返回:

The root span of the newly created trace.

startSpan

public static Span startSpan(String name)

Starts a new span within a trace. Uses the current thread context to determine the trace ID and parent span ID.

参数:

name - Name to be given to the span.

返回:

The newly started span.

attachSpan

public static Span attachSpan(BigInteger traceId,
                              BigInteger spanId,
                              String name)

Attach to an existing span. This is useful when a span has been created elsewhere and you'd like to log annotations against that span locally. For example across thread boundaries in the local vm.

参数:

traceId - ID of the trace of the span being attached.

spanId - ID of the span being attached.

name - Name for the span - useful for debug

返回:

The attached span.

startSpan

public static Span startSpan(BigInteger traceId,
                             BigInteger parentSpanId,
                             String name)

Starts a new span under the specified trace and parent spanId. This is used for attaching to an external span for example with an incoming http request.

参数:

traceId - - the current traceId

parentSpanId - - the parent span, if available

name - - the name for this span

返回:

the newly created span

currentSpan

public static com.google.common.base.Optional<Span> currentSpan()