com.google.instrumentation.trace

Class BlankSpan

java.lang.Object

com.google.instrumentation.trace.Span

com.google.instrumentation.trace.BlankSpan

@Immutable
public final class BlankSpan
extends Span

The BlankSpan is a singleton class, which is the default Span that is used when no Span implementation is available. All operations are no-op.

Used also to stop tracing, see Tracer.withSpan(com.google.instrumentation.trace.Span).

Nested Class Summary

Nested classes/interfaces inherited from class com.google.instrumentation.trace.Span

Span.Options

Field Summary

Fields

Modifier and Type	Field and Description
static BlankSpan	INSTANCE Singleton instance of this class.

Method Summary

Modifier and Type	Method and Description
void	addAnnotation(Annotation annotation) No-op implementation of the Span.addAnnotation(Annotation) method.
void	addAnnotation(String description, Map<String,AttributeValue> attributes) No-op implementation of the Span.addAnnotation(String, Map) method.
void	addAttributes(Map<String,AttributeValue> attributes) No-op implementation of the Span.addAttributes(Map) method.
void	addLink(Link link) No-op implementation of the Span.addLink(Link) method.
void	addNetworkEvent(NetworkEvent networkEvent) No-op implementation of the Span.addNetworkEvent(NetworkEvent) method.
void	end(EndSpanOptions options) No-op implementation of the Span.end(EndSpanOptions) method.
String	toString()

Methods inherited from class com.google.instrumentation.trace.Span

addAnnotation, end, getContext, getOptions

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final BlankSpan INSTANCE

Singleton instance of this class.

Method Detail

addAttributes

public void addAttributes(Map<String,AttributeValue> attributes)

No-op implementation of the Span.addAttributes(Map) method.

Specified by:

addAttributes in class Span

Parameters:

attributes - the attributes that will be added and associated with the Span.

addAnnotation

public void addAnnotation(String description,
                          Map<String,AttributeValue> attributes)

No-op implementation of the Span.addAnnotation(String, Map) method.

Specified by:

addAnnotation in class Span

Parameters:

description - the description of the annotation time event.

attributes - the attributes that will be added; these are associated with this annotation, not the Span as for Span.addAttributes(java.util.Map<java.lang.String, com.google.instrumentation.trace.AttributeValue>).

addAnnotation

public void addAnnotation(Annotation annotation)

No-op implementation of the Span.addAnnotation(Annotation) method.

Specified by:

addAnnotation in class Span

Parameters:

annotation - the annotations to add.

addNetworkEvent

public void addNetworkEvent(NetworkEvent networkEvent)

No-op implementation of the Span.addNetworkEvent(NetworkEvent) method.

Specified by:

addNetworkEvent in class Span

Parameters:

networkEvent - the network event to add.

addLink

public void addLink(Link link)

No-op implementation of the Span.addLink(Link) method.

Specified by:

addLink in class Span

Parameters:

link - the link to add.

end

public void end(EndSpanOptions options)

No-op implementation of the Span.end(EndSpanOptions) method.

Specified by:

end in class Span

Parameters:

options - the options to be used for the end of the Span.

toString

public String toString()

Overrides:

toString in class Object