show session

finish/client/src/main/webapp/css/styles.css

@@ -95,7 +95,7 @@ a {
 }
 
 .headerRow {
-    height: 100px;
+    height: 120px;
     position:relative;
     z-index:2;
     box-shadow: 0 2px 4px 0 rgba(0,0,0,0.50);

finish/client/src/main/webapp/index.html

@@ -40,6 +40,7 @@ <h1 id="appTitle">Open Liberty System Load</h1>
                     </div>
                     <div class="headerTitle" id="sysPropTitle">
                       <h2>System Loads</h2>
+                      <p id="SessionTitle" >Session:</p>
                     </div>
                 </div>
                 <div class="sectionContent">
@@ -74,7 +75,11 @@ <h2>System Loads</h2>
     };
 
     webSocket.onmessage = function (event) {
-        var data = JSON.parse(event.data);
+        try {
+            var data = JSON.parse(event.data);
+        } catch (e) {
+            document.getElementById('SessionTitle').innerHTML = "Session: " + event.data;
+        }
         var tableRow = document.createElement('tr');
         var loadAverage = data.loadAverage == null ? '-' : data.loadAverage.toFixed(2);
         var memoryUsage = data.memoryUsage == null ? '-' : data.memoryUsage.toFixed(2);

finish/system/src/main/java/io/openliberty/guides/system/SystemService.java

@@ -66,6 +66,11 @@ public static void sendToAllSessions(JsonObject systemLoad) {
     public void onOpen(Session session) {
         logger.info("Server connected to session: " + session.getId());
         sessions.add(session);
+        try {
+            session.getBasicRemote().sendObject(session.getId());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
     }
     // end::onOpenMethod[]
 

finish/system/src/test/java/it/io/openliberty/guides/system/SystemClient.java

@@ -45,8 +45,10 @@ public void onOpen(Session session) {
     @OnMessage
     public void onMessage(String message, Session userSession) throws Exception {
         SystemLoadDecoder decoder = new SystemLoadDecoder();
-        JsonObject systemLoad = decoder.decode(message);
-        SystemServiceIT.verify(systemLoad);
+        if (decoder.willDecode(message)) {
+            JsonObject systemLoad = decoder.decode(message);
+            SystemServiceIT.verify(systemLoad);
+        }
     }
     // end::onMessage[]
 

start/client/src/main/webapp/css/styles.css

@@ -95,7 +95,7 @@ a {
 }
 
 .headerRow {
-    height: 100px;
+    height: 120px;
     position:relative;
     z-index:2;
     box-shadow: 0 2px 4px 0 rgba(0,0,0,0.50);