org.apache.ignite.internal.processors.tracing

Class DeferredSpan

java.lang.Object

org.apache.ignite.internal.processors.tracing.DeferredSpan

All Implemented Interfaces:

Span

public class DeferredSpan
extends Object
implements Span

Encapsulates concept of a deferred-initialized span. It's used to overcome OpenCensus span implementation, that starts span immediately after deserialization.

Constructor Summary

Constructors

Constructor and Description
DeferredSpan(byte[] serializedSpan) Constructor.

Method Summary

Modifier and Type	Method and Description
Span	addLog(Supplier<String> logDescSupplier) Logs work to span.
Span	addTag(String tagName, Supplier<String> tagValSupplier) Adds tag to span with String value.
Span	end() Ends span.
Set<Scope>	includedScopes()
boolean	isChainable(Scope scope)
boolean	isEnded()
byte[]	serializedSpan()
Span	setStatus(SpanStatus spanStatus) Explicitly set status for span.
SpanType	type()

Methods inherited from class java.lang.Object

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

Constructor Detail

DeferredSpan

public DeferredSpan(byte[] serializedSpan)

Constructor.

Parameters:

serializedSpan - Serialized span bytes.

Method Detail

serializedSpan

public byte[] serializedSpan()

Returns:

Serialized span.

addTag

public Span addTag(String tagName,
                   Supplier<String> tagValSupplier)

Adds tag to span with String value.

Specified by:

addTag in interface Span

Parameters:

tagName - Tag name.

tagValSupplier - Tag value supplier. Supplier is used instead of strict tag value cause of it's lazy nature. So that it's possible not to generate String tag value in case of NoopSpan.

addLog

public Span addLog(Supplier<String> logDescSupplier)

Logs work to span.

Specified by:

addLog in interface Span

Parameters:

logDescSupplier - Log description supplier. Supplier is used instead of strict log description cause of it's lazy nature. So that it's possible not to generate String log description in case of NoopSpan.

setStatus

public Span setStatus(SpanStatus spanStatus)

Explicitly set status for span.

Specified by:

setStatus in interface Span

Parameters:

spanStatus - Status.

end

public Span end()

Ends span. This action sets default status if not set and mark the span as ready to be exported.

Specified by:

end in interface Span

isEnded

public boolean isEnded()

Specified by:

isEnded in interface Span

Returns:

true if span has already ended.

type

public SpanType type()

Specified by:

type in interface Span

Returns:

Type of given span.

includedScopes

public Set<Scope> includedScopes()

Specified by:

includedScopes in interface Span

Returns:

Set of included scopes.

isChainable

public boolean isChainable(Scope scope)

Specified by:

isChainable in interface Span

Parameters:

scope - Chainable scope candidate.

Returns:

true if given span is chainable with other spans with specified scope.