org.springframework.cloud.sleuth.instrument.web.client

Class TraceRestTemplateInterceptor

java.lang.Object

org.springframework.cloud.sleuth.instrument.web.client.TraceRestTemplateInterceptor

All Implemented Interfaces:

org.springframework.http.client.ClientHttpRequestInterceptor

public class TraceRestTemplateInterceptor
extends Object
implements org.springframework.http.client.ClientHttpRequestInterceptor

Interceptor that verifies whether the trance and span id has been set on the request and sets them if one or both of them are missing.

Since:

1.0.0

Author:

Marcin Grzejszczak, Spencer Gibb

See Also:

RestTemplate

Field Summary

Fields

Modifier and Type	Field and Description
protected HttpTraceKeysInjector	keysInjector
protected static org.apache.commons.logging.Log	log
protected HttpSpanInjector	spanInjector
protected Tracer	tracer

Constructor Summary

Constructors

Constructor and Description
TraceRestTemplateInterceptor(Tracer tracer, HttpSpanInjector spanInjector, HttpTraceKeysInjector httpTraceKeysInjector)

Method Summary

Modifier and Type	Method and Description
protected void	addRequestTags(org.springframework.http.HttpRequest request) Adds HTTP tags to the client side span
protected Span	currentSpan()
void	finish() Close the current span and log the client received event
org.springframework.http.client.ClientHttpResponse	intercept(org.springframework.http.HttpRequest request, byte[] body, org.springframework.http.client.ClientHttpRequestExecution execution)
protected boolean	isTracing()
protected void	publishStartEvent(org.springframework.http.HttpRequest request) Enriches the request with proper headers and publishes the client sent event

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

tracer

protected final Tracer tracer

spanInjector

protected final HttpSpanInjector spanInjector

keysInjector

protected final HttpTraceKeysInjector keysInjector

Constructor Detail

TraceRestTemplateInterceptor

public TraceRestTemplateInterceptor(Tracer tracer,
                                    HttpSpanInjector spanInjector,
                                    HttpTraceKeysInjector httpTraceKeysInjector)

Method Detail

intercept

public org.springframework.http.client.ClientHttpResponse intercept(org.springframework.http.HttpRequest request,
                                                                    byte[] body,
                                                                    org.springframework.http.client.ClientHttpRequestExecution execution)
                                                             throws IOException

Specified by:

intercept in interface org.springframework.http.client.ClientHttpRequestInterceptor

Throws:

IOException

publishStartEvent

protected void publishStartEvent(org.springframework.http.HttpRequest request)

Enriches the request with proper headers and publishes the client sent event

addRequestTags

protected void addRequestTags(org.springframework.http.HttpRequest request)

Adds HTTP tags to the client side span

finish

public void finish()

Close the current span and log the client received event

currentSpan

protected Span currentSpan()

isTracing

protected boolean isTracing()