ensure all apps use the same host:port scheme for ZIPKIN_SERVICE_ADDR

src/adservice/src/main/java/hipstershop/AdService.java

@@ -271,7 +271,7 @@ public final class AdService {
   private static void initZipkin() {
     String zipkinAddr = System.getenv("ZIPKIN_SERVICE_ADDR");
     if (zipkinAddr != null && !zipkinAddr.isEmpty()) {
-      String zipkinUrl = String.format("%s", zipkinAddr);
+      String zipkinUrl = String.format("http://%s/api/v2/spans", zipkinAddr);
       // Register Zipkin Tracing.
       ZipkinTraceExporter.createAndRegister(zipkinUrl, "adservice");
       logger.info("Zipkin initialization complete.");

src/checkoutservice/main.go

@@ -136,7 +136,7 @@ func initZipkinTracing() {
 		return
 	}
 
-	reporter := zipkinhttp.NewReporter(svcAddr)
+	reporter := zipkinhttp.NewReporter(fmt.Sprintf("http://%s/api/v2/spans", svcAddr))
 	exporter := zipkin.NewExporter(reporter, nil)
 	trace.RegisterExporter(exporter)
 

src/currencyservice/server.js

@@ -153,8 +153,8 @@ function setupTracerAndExporters () {
   }
   
   const zipkinOptions = {
-    url: ZIPKIN_SERVICE_ADDR,
-    serviceName: 'paymentservice-server'
+    url: "http://" + ZIPKIN_SERVICE_ADDR + "/api/v2/spans",
+    serviceName: 'currencyservice-server'
   };
 
   // Creates Zipkin exporter

src/frontend/main.go

@@ -180,7 +180,7 @@ func initZipkinTracing(log logrus.FieldLogger) {
 		return
 	}
 
-	reporter := zipkinhttp.NewReporter(svcAddr)
+	reporter := zipkinhttp.NewReporter(fmt.Sprintf("http://%s/api/v2/spans", svcAddr))
 	exporter := zipkin.NewExporter(reporter, nil)
 	trace.RegisterExporter(exporter)
 

src/paymentservice/server.js

@@ -41,7 +41,7 @@ function setupTracerAndExporters () {
   }
   
   const zipkinOptions = {
-    url: ZIPKIN_SERVICE_ADDR,
+    url: "http://" + ZIPKIN_SERVICE_ADDR + "/api/v2/spans",
     serviceName: 'paymentservice-server'
   };
 

src/shippingservice/main.go

@@ -172,7 +172,7 @@ func initZipkinTracing() {
 		return
 	}
 
-	reporter := zipkinhttp.NewReporter(svcAddr)
+	reporter := zipkinhttp.NewReporter(fmt.Sprintf("http://%s/api/v2/spans", svcAddr))
 	exporter := zipkin.NewExporter(reporter, nil)
 	trace.RegisterExporter(exporter)