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 * Copyright (c) 2021, 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.
 *
 * 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.
 *
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 */
package jdk.jfr.api.consumer.log;

import jdk.jfr.Recording;

/**
 * @test
 * @summary Tests that transition between disk=true/false works
 * @requires vm.flagless
 * @requires vm.hasJFR
 * @library /test/lib
 * @build jdk.jfr.api.consumer.log.LogAnalyzer
 * @run main/othervm
 *      -Xlog:jfr+event*=debug,jfr+system=debug:file=memory-disk.log
 *      jdk.jfr.api.consumer.log.TestMemoryDiskTransition
 */
public class TestMemoryDiskTransition {

    public static void main(String... args) throws Exception {
        LogAnalyzer la = new LogAnalyzer("memory-disk.log");
        try (Recording r1 = new Recording()) {
            r1.setToDisk(false);
            r1.start();
            la.shouldNotContain("Log stream started");
            try (Recording r2 = new Recording()) {
                r2.setToDisk(true);
                r2.start(); // transition to disk
                la.shouldNotContain("Log stream stopped");
                la.await("Log stream started");
                r2.stop(); // transition back to memory
            }
            la.await("Log stream stopped");
        }
    }
}
