8257424: RecordingStream does not specify the recording name

Reviewed-by: egahlin

Author: YaSuenag

src/jdk.jfr/share/classes/jdk/jfr/consumer/RecordingStream.java

@@ -69,6 +69,7 @@
 public final class RecordingStream implements AutoCloseable, EventStream {
 
     private final Recording recording;
+    private final Instant creationTime;
     private final EventDirectoryStream directoryStream;
 
     /**
@@ -86,6 +87,8 @@ public RecordingStream() {
         Utils.checkAccessFlightRecorder();
         AccessControlContext acc = AccessController.getContext();
         this.recording = new Recording();
+        this.creationTime = Instant.now();
+        this.recording.setName("Recording Stream: " + creationTime);
         try {
             PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
             this.directoryStream = new EventDirectoryStream(acc, null, SecuritySupport.PRIVILEGED, pr, configurations());

test/jdk/jdk/jfr/api/consumer/recordingstream/TestRecordingName.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, NTT DATA.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jfr.api.consumer.recordingstream;
+
+import jdk.jfr.consumer.RecordingStream;
+import jdk.test.lib.jfr.EventNames;
+
+/**
+* @test
+* @bug 8257424
+* @summary Tests recording name for RecordingStrream
+* @key jfr
+* @requires vm.hasJFR
+* @library /test/lib
+* @run main/othervm jdk.jfr.api.consumer.recordingstream.TestRecordingName
+*/
+public class TestRecordingName {
+
+   public static void main(String... args) throws Exception {
+       try (RecordingStream r = new RecordingStream()) {
+           r.enable(EventNames.ActiveRecording);
+           r.onEvent(e -> {
+               System.out.println(e);
+               String name = e.getString("name");
+               if (name.startsWith("Recording Stream: ")) {
+                   r.close();
+                   return;
+               }
+               System.err.println("Recording name not set, was " + name + ", but expected \"Recording Stream: <Instant>\"");
+           });
+           r.start();
+       }
+   }
+}