Package overit.geocall.spring.trace.client

Class WebClientTracer

java.lang.Object
overit.geocall.spring.trace.client.WebClientTracer
@Component @Scope(value="prototype", proxyMode=NO) public class WebClientTracer extends Object
Implementation of filter that trace some generic information (included the content when available) about the request performed by the WebClient.

The operation can be described in two stages:

  • capture: in the capture phase, the trace is registered within the client filters and stores some information internally such as headers, URL and message content (when possible)
  • trace: the trace phase occurs after the completion of the request and deals with making the captured information persistent, through the IOLogTracer

Following, there's an usage example


 @Service
 public class ClientService {
     @Autowired
     WebClientTracer tracer;

     public void findAll() {
         var entity = WebClient.builder()
                        .filter(tracer.capture()) // 1 - CAPTURE
                        .build()
                        .get()
                        .uri("https://hostname:8080/resource")
                        .retrieve()
                        .toEntity(Map.class)
                        .block();

         tracer.trace(); // 2 - TRACE

     }
 }

  • Constructor Details

    • WebClientTracer

      @Autowired public WebClientTracer(JackMapper mapper)
      Create a new WebClientTracer instance
      Parameters:
      mapper - mapper used to serialize headers info

  • Method Details

    • capture

      public org.springframework.web.reactive.function.client.ExchangeFilterFunction capture()
      Capture the information about request and response
      Returns:
      an ExchangeFilterFunction used to capture the information about request and response

    • trace

      public void trace()
      Deals with making the captured information persistent, through the IOLogTracer