Package brave.propagation

Class StrictScopeDecorator

java.lang.Object

brave.propagation.StrictScopeDecorator

All Implemented Interfaces:

CurrentTraceContext.ScopeDecorator, Closeable, AutoCloseable

public final class StrictScopeDecorator
extends Object
implements CurrentTraceContext.ScopeDecorator, Closeable

Useful when developing instrumentation as state is enforced more strictly.

Ex.

 tracing = Tracing.newBuilder()
                  .spanReporter(...)
                  .currentTraceContext(ThreadLocalCurrentTraceContext.newBuilder()
                    .addScopeDecorator(StrictScopeDecorator.create())
                    .build()
                  ).build();
 

Field Summary

Fields inherited from interface brave.propagation.CurrentTraceContext.ScopeDecorator

NOOP

Method Summary

Modifier and Type	Method	Description
void	close()	This is useful in tests to help ensure scopes are not leaked by instrumentation.
static StrictScopeDecorator	create()
CurrentTraceContext.Scope	decorateScope(TraceContext context, CurrentTraceContext.Scope scope)	Identifies problems by throwing IllegalStateException when a scope is closed on a different thread.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static StrictScopeDecorator create()

decorateScope

public CurrentTraceContext.Scope decorateScope(@Nullable
                                               TraceContext context,
                                               CurrentTraceContext.Scope scope)

Identifies problems by throwing IllegalStateException when a scope is closed on a different thread.

Specified by:

decorateScope in interface CurrentTraceContext.ScopeDecorator

Parameters:

context - null implies the scope should be cleared

scope - CurrentTraceContext.Scope.NOOP if the former decoration resulted in no change.

close

public void close()

This is useful in tests to help ensure scopes are not leaked by instrumentation.

Note: It is important to close all resources prior to calling this, so that in-flight operations are not mistaken as scope leaks. If this raises an error, consider if a wrapped executor is still running.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

AssertionError - if any scopes were left unclosed.

Since:

5.11