org.springframework.cloud.sleuth.instrument.messaging

Class HeaderBasedMessagingInjector

java.lang.Object

org.springframework.cloud.sleuth.instrument.messaging.HeaderBasedMessagingInjector

All Implemented Interfaces:

MessagingSpanTextMapInjector, SpanInjector<SpanTextMap>

public class HeaderBasedMessagingInjector
extends Object
implements MessagingSpanTextMapInjector

Default implementation for messaging

Since:

1.2.0

Author:

Marcin Grzejszczak

Constructor Summary

Constructors

Constructor and Description
HeaderBasedMessagingInjector(TraceKeys traceKeys)

Method Summary

Modifier and Type	Method and Description
void	inject(Span span, SpanTextMap carrier) Takes two arguments: a Span instance, and a “carrier” object in which to inject that Span for cross-process propagation.

Methods inherited from class java.lang.Object

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

Constructor Detail

HeaderBasedMessagingInjector

public HeaderBasedMessagingInjector(TraceKeys traceKeys)

Method Detail

inject

public void inject(Span span,
                   SpanTextMap carrier)

Description copied from interface: SpanInjector

Takes two arguments:

• a Span instance, and
• a “carrier” object in which to inject that Span for cross-process propagation.

A “carrier” object is some sort of http or rpc envelope, for example HeaderGroup (from Apache HttpComponents). Attempting to inject to a carrier that has been registered/configured to this Tracer will result in a IllegalStateException.

Specified by:

inject in interface SpanInjector<SpanTextMap>