Package brave.rpc

Class RpcTracing

java.lang.Object

brave.rpc.RpcTracing

All Implemented Interfaces:

Closeable, AutoCloseable

public class RpcTracing
extends Object
implements Closeable

Instances built via create(Tracing) or newBuilder(Tracing) are registered automatically such that statically configured instrumentation like HTTP clients can use current().

Since:

5.8

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RpcTracing.Builder

Method Summary

Modifier and Type	Method	Description
SamplerFunction<RpcRequest>	clientSampler()	Returns an overriding sampling decision for a new trace.
void	close()
static RpcTracing	create(Tracing tracing)
static RpcTracing	current()	Returns the most recently created tracing component iff it hasn't been closed.
static RpcTracing.Builder	newBuilder(Tracing tracing)
SamplerFunction<RpcRequest>	serverSampler()	Returns an overriding sampling decision for a new trace.
RpcTracing.Builder	toBuilder()
Tracing	tracing()

Methods inherited from class java.lang.Object

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

Method Details

create

public static RpcTracing create(Tracing tracing)

Since:

5.8

newBuilder

public static RpcTracing.Builder newBuilder(Tracing tracing)

Since:

5.8

tracing

public Tracing tracing()

Since:

5.8

clientSampler

public SamplerFunction<RpcRequest> clientSampler()

Returns an overriding sampling decision for a new trace. Defaults to ignore the request and use the trace ID instead.

This decision happens when a trace was not yet started in process. For example, you may be making an rpc request as a part of booting your application. You may want to opt-out of tracing client requests that did not originate from a server request.

Since:

5.8

See Also:

SamplerFunctions, RpcRuleSampler

serverSampler

public SamplerFunction<RpcRequest> serverSampler()

Returns an overriding sampling decision for a new trace. Defaults to ignore the request and use the trace ID instead.

This decision happens when trace IDs were not in headers, or a sampling decision has not yet been made. For example, if a trace is already in progress, this function is not called. You can implement this to skip paths that you never want to trace.

Since:

5.8

See Also:

SamplerFunctions, RpcRuleSampler

toBuilder

public RpcTracing.Builder toBuilder()

current

@Nullable public static RpcTracing current()

Returns the most recently created tracing component iff it hasn't been closed. null otherwise.

This object should not be cached.

Since:

5.9

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Since:

5.9