/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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.

 *

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package jdk.jfr.jvm;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.util.ArrayList;

import java.util.List;

/*

 * @test TestLogOutput

 * @key jfr

 * @summary Sanity test jfr logging output

 * @library /test/lib

 * @run main/othervm -Xlog:disable -Xlog:jfr*=trace:file=jfr_trace.txt -XX:StartFlightRecording=duration=1s,filename=recording.jfr jdk.jfr.jvm.TestLogOutput

 */

public class TestLogOutput {

    public static void main(String[] args) throws Exception {

        final String fileName = "jfr_trace.txt";

        final List<String>findWhat = new ArrayList<>();

        findWhat.add("Starting up Jfr startup recording");

        findWhat.add("Flight Recorder initialized");

        boolean passed = false;

        List<String> matches = new ArrayList<String>(findWhat);

        do {

            List<String> lines;

            try {

                lines = Files.readAllLines(Paths.get(fileName));

            } catch (IOException e) {

                throw new Error(e);

            }

            for (String l : lines) {

                for (String m : matches) {

                    if (l.toString().contains(m)) {

                        matches.remove(m);

                        break;

                    }

                }

            }

            if (matches.size() < 1) {

                passed = true;

                break;

            }

            if (lines.size() > 100) {

                break; /* did not find it */

            }

        } while(!passed);

        if (!passed) {

            throw new Error("Not found " + findWhat  + " in stream");

        }

       System.out.println("PASSED");

    }

}