test/jdk/jdk/jfr/api/consumer/streaming/TestFilledChunks.java
changeset 58863 c16ac7a2eba4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/consumer/streaming/TestFilledChunks.java	Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * 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.streaming;
+
+import java.util.Random;
+
+import jdk.jfr.Event;
+import jdk.jfr.consumer.RecordingStream;
+
+/**
+ * @test
+ * @summary Test that it is possible to iterate over chunk with normal events
+ * @key jfr
+ * @requires vm.hasJFR
+ * @library /test/lib
+ * @run main/othervm jdk.jfr.api.consumer.streaming.TestFilledChunks
+ */
+public class TestFilledChunks {
+
+    static class FillEvent extends Event {
+        String message;
+        int value;
+        int id;
+    }
+
+    static class EndEvent extends Event {
+    }
+
+    // Will generate about 100 MB of data, or 8-9 chunks
+    private static final int EVENT_COUNT = 5_000_000;
+
+    public static void main(String... args) throws Exception {
+        try (RecordingStream rs = new RecordingStream()) {
+            rs.onEvent(FillEvent.class.getName(), e -> {
+                int id = e.getInt("id");
+                // Some events may get lost due to
+                // buffer being full.
+                if (id > EVENT_COUNT / 2) {
+                    rs.close();
+                }
+            });
+            rs.startAsync();
+            long seed = System.currentTimeMillis();
+            System.out.println("Random seed: " + seed);
+            Random r = new Random(seed);
+            for (int i = 1; i < EVENT_COUNT; i++) {
+                FillEvent f = new FillEvent();
+                f.message = i % 2 == 0 ? "hello, hello, hello, hello, hello!" : "hi!";
+                f.value = r.nextInt(10000);
+                f.id = i;
+                f.commit();
+                if (i % 1_000_000 == 0) {
+                    System.out.println("Emitted " + i + " events");
+                }
+            }
+            rs.awaitTermination();
+        }
+    }
+}