This module contains tracing interceptors for Spring RestTemplate.
TracingClientHttpRequestInterceptor and TracingAsyncClientHttpRequestInterceptor add trace
headers to outgoing requests. They then report to Zipkin how long each request took, along with
relevant tags like the http url.
Tracing always needs a bean of type HttpTracing configured. Make sure
it is in place before proceeding. Here's an example in XML and Java.
Then, wire TracingClientHttpRequestInterceptor and add it with the
RestTemplate.setInterceptors method. If you are using AsyncRestTemplate and Spring 4.3+, you can
wire AsyncTracingClientHttpRequestInterceptor and add it via AsyncRestTemplate.setInterceptors.