Class WebClientTracing

java.lang.Object

io.helidon.webclient.tracing.WebClientTracing

All Implemented Interfaces:

NamedService, WebClientService

public class WebClientTracing
extends Object
implements WebClientService

Client service for tracing propagation. This service adds appropriate headers to the outbound request to propagate trace across services, so the spans can form a hierarchy in a tracer, such as Jaeger.

Nested Class Summary

Nested classes/interfaces inherited from interface WebClientService

WebClientService.Chain, WebClientService.TransportChain, WebClientService.WireProtocolChain

Modifier and Type	Interface	Description
static interface	WebClientService.Chain	Chain of services.
static interface	WebClientService.TransportChain	Terminal service chain that can expose transport response context after an invocation.
static interface	WebClientService.WireProtocolChain	Terminal service chain that exposes the currently selected wire protocol.

Method Summary

Modifier and Type	Method	Description
static WebClientService	create()	Creates new instance of client tracing service.
static WebClientService	create(Tracer tracer)	Creates a new client tracing service for a specific tracer.
WebClientServiceResponse	handle(WebClientService.Chain chain, WebClientServiceRequest request)	Invoke a service, call WebClientService.Chain.proceed(io.helidon.webclient.api.WebClientServiceRequest) to call the next service in the chain.
String	type()	Type of this implementation, to distinguish instances of same type, with different NamedService.name().

Methods inherited from class Object

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

Methods inherited from interface WebClientService

name

Modifier and Type	Method	Description
default String	name()	Name of this implementation, as provided in ConfiguredProvider.create(Config, String).

Method Details

create

public static WebClientService create()

Creates new instance of client tracing service.

Returns:

client tracing service

create

public static WebClientService create(Tracer tracer)

Creates a new client tracing service for a specific tracer.

Parameters:

tracer - to create new spans

Returns:

client tracing service

type

public String type()

Description copied from interface: NamedService

Type of this implementation, to distinguish instances of same type, with different NamedService.name(). Use for example ConfiguredProvider.configKey() to define the type.

Specified by:

type in interface NamedService

Specified by:

type in interface WebClientService

Returns:

type of this service

handle

public WebClientServiceResponse handle(WebClientService.Chain chain,
 WebClientServiceRequest request)

Description copied from interface: WebClientService

Invoke a service, call WebClientService.Chain.proceed(io.helidon.webclient.api.WebClientServiceRequest) to call the next service in the chain.

Specified by:

handle in interface WebClientService

Parameters:

chain - to invoke next web client service, or the HTTP call if this is the last service

request - request from the client, or previous services

Returns:

response to be returned to the client