com.mysql.cj.telemetry

Class NoopTelemetryHandler

java.lang.Object

com.mysql.cj.telemetry.NoopTelemetryHandler

All Implemented Interfaces:

TelemetryHandler

public class NoopTelemetryHandler
extends Object
implements TelemetryHandler

No-op implementation of TelemetryHandler.

Field Summary

Fields

Modifier and Type	Field	Description
private static NoopTelemetryHandler	INSTANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NoopTelemetryHandler()

Method Summary

Modifier and Type	Method	Description
static NoopTelemetryHandler	getInstance()
TelemetrySpan	startSpan(TelemetrySpanName spanName, Object... args)	Start a telemetry span.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mysql.cj.telemetry.TelemetryHandler

addLinkTarget, getContextPropagationKey, propagateContext, removeLinkTarget

Field Detail

INSTANCE

private static NoopTelemetryHandler INSTANCE

Constructor Detail

NoopTelemetryHandler

private NoopTelemetryHandler()

Method Detail

getInstance

public static NoopTelemetryHandler getInstance()

startSpan

public TelemetrySpan startSpan(TelemetrySpanName spanName,
                               Object... args)

Description copied from interface: TelemetryHandler

Start a telemetry span. Additionally, the returned TelemetrySpan object must be made current so that it gets recorded by the telemetry tracer. A TelemetrySpan object must be closed in a finally block after being made current, e.g.:

 TelemetrySpan span = telemetryHandler.startSpan(TelemetrySpanName.PING);
 try (TelemetryScope scope = span.makeCurrent()) {
     // your code goes here
 } finally {
     span.end();
 }
 

Specified by:

startSpan in interface TelemetryHandler

Parameters:

spanName - the span name that identifies this telemetry span

args - arguments used for interpolating the specified span name via String.format(String, Object...)

Returns:

the newly-created span object