Updates to support http template parsing

Author: Adrian Cole

gradle.properties

@@ -1,4 +1,4 @@
 version=2.3.1-SNAPSHOT
 
-braveVersion=4.15.1
+braveVersion=4.15.2-SNAPSHOT
 ratpackVersion=1.4.6

src/main/java/ratpack/zipkin/internal/ServerHttpAdapter.java

@@ -1,6 +1,7 @@
 package ratpack.zipkin.internal;
 
 import com.google.common.net.HttpHeaders;
+import ratpack.path.PathBinding;
 import ratpack.zipkin.ServerRequest;
 import ratpack.zipkin.ServerResponse;
 import zipkin2.Endpoint;
@@ -36,6 +37,10 @@ public boolean parseClientAddress(final ServerRequest serverRequest,
     return request.getHeaders().get(name);
   }
 
+  @Override public String template(ServerResponse response) {
+    return response.pathBinding().map(PathBinding::getDescription).orElse(null);
+  }
+
   @Override public Integer statusCode(ServerResponse response) {
     return response.getStatus().getCode();
   }

src/test/java/brave/http/ITServerTracingModule.java

@@ -31,6 +31,9 @@ protected void init() throws Exception {
                         httpTracing.tracing().tracer().nextSpan().name("child").start().finish();
                         ctx.getResponse().send("happy");
                       })
+                      .get("/items/:itemId", ctx ->
+                          ctx.getResponse().send(ctx.getPathTokens().get("itemId"))
+                      )
                       .get("/extra", ctx -> ctx.getResponse().send("joey"))
                       .get("/exception", ctx -> {
                         throw new IOException();