/*

 * Copyright (c) 2015, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.time.Instant;

import java.util.Objects;

import java.util.logging.Level;

import java.util.logging.LogRecord;

import java.util.logging.SimpleFormatter;

/**

 * @test

 * @bug 8072645

 * @summary tests the new methods added to LogRecord.

 * @run main LogRecordWithNanosAPI

 * @author danielfuchs

 */

public class LogRecordWithNanosAPI {

    static final int MILLIS_IN_SECOND = 1000;

    static final int NANOS_IN_MILLI = 1000_000;

    static final int NANOS_IN_SECOND = 1000_000_000;

    static final boolean verbose = true;

    static final class TestAssertException extends RuntimeException {

        TestAssertException(String msg) { super(msg); }

    }

    private static void assertEquals(long expected, long received, String msg) {

        if (expected != received) {

            throw new TestAssertException("Unexpected result for " + msg

                    + ".\n\texpected: " + expected

                    +  "\n\tactual:   " + received);

        } else if (verbose) {

            System.out.println("Got expected " + msg + ": " + received);

        }

    }

    private static void assertEquals(Object expected, Object received, String msg) {

        if (!Objects.equals(expected, received)) {

            throw new TestAssertException("Unexpected result for " + msg

                    + ".\n\texpected: " + expected

                    +  "\n\tactual:   " + received);

        } else if (verbose) {

            System.out.println("Got expected " + msg + ": " + received);

        }

    }

    // The nano second fractional part of a second, contained in a time expressed

    // as a number of millisecond from the epoch.

    private static long nanoInSecondFromEpochMilli(long millis) {

        return (((millis%MILLIS_IN_SECOND) + MILLIS_IN_SECOND)%MILLIS_IN_SECOND)*NANOS_IN_MILLI;

    }

    /**

     * Serializes a log record, then deserializes it and check that both

     * records match.

     * @param record the log record to serialize & deserialize.

     * @param hasExceedingNanos whether the record has a nano adjustment whose

     *            value exceeds 1ms.

     * @throws IOException Unexpected.

     * @throws ClassNotFoundException  Unexpected.

     */

    public static void test(LogRecord record, boolean hasExceedingNanos)

            throws IOException, ClassNotFoundException {

        // Format the given logRecord using the SimpleFormatter

        SimpleFormatter formatter = new SimpleFormatter();

        String str = formatter.format(record);

        // Serialize the given LogRecord

        final ByteArrayOutputStream baos = new ByteArrayOutputStream();

        final ObjectOutputStream oos = new ObjectOutputStream(baos);

        oos.writeObject(record);

        oos.flush();

        oos.close();

        // First checks that the log record can be deserialized

        final ByteArrayInputStream bais =

                new ByteArrayInputStream(baos.toByteArray());

        final ObjectInputStream ois = new ObjectInputStream(bais);

        final LogRecord record2 = (LogRecord)ois.readObject();

        assertEquals(record.getMillis(), record2.getMillis(), "getMillis()");

        assertEquals(record.getInstant().getEpochSecond(),

                record2.getInstant().getEpochSecond(),

                "getInstant().getEpochSecond()");

        assertEquals(record.getInstant().getNano(),

                record2.getInstant().getNano(),

                "getInstant().getNano()");

        assertEquals(record.getInstant().toEpochMilli(),

                record2.getInstant().toEpochMilli(),

                "getInstant().toEpochMilli()");

        long millis = record.getMillis();

        millis = hasExceedingNanos

                ? Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                        (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI

                        + record.getInstant().getNano() % NANOS_IN_MILLI).toEpochMilli()

                : millis;

        assertEquals(millis, record.getInstant().toEpochMilli(),

                "getMillis()/getInstant().toEpochMilli()");

        millis = record2.getMillis();

        millis = hasExceedingNanos

                ? Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                        (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI

                        + record2.getInstant().getNano() % NANOS_IN_MILLI).toEpochMilli()

                : millis;

        assertEquals(millis, record2.getInstant().toEpochMilli(),

                "getMillis()/getInstant().toEpochMilli()");

        long nanos = nanoInSecondFromEpochMilli(record.getMillis())

                + record.getInstant().getNano() % NANOS_IN_MILLI;

        assertEquals(nanos, record.getInstant().getNano(),

                "nanoInSecondFromEpochMilli(record.getMillis())"

                + " + record.getInstant().getNano() % NANOS_IN_MILLI /getInstant().getNano()");

        nanos = nanoInSecondFromEpochMilli(record2.getMillis())

                + record2.getInstant().getNano() % NANOS_IN_MILLI;

        assertEquals(nanos, record2.getInstant().getNano(),

                "nanoInSecondFromEpochMilli(record2.getMillis())"

                + " + record2.getInstant().getNano() % NANOS_IN_MILLI /getInstant().getNano()");

        // Format the deserialized LogRecord using the SimpleFormatter, and

        // check that the string representation obtained matches the string

        // representation of the original LogRecord

        String str2 = formatter.format(record2);

        if (!str.equals(str2))

            throw new RuntimeException("Unexpected values in deserialized object:"

                + "\n\tExpected:  " + str

                + "\n\tRetrieved: "+str);

    }

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

        int count=0;

        LogRecord record = new LogRecord(Level.INFO, "Java Version: {0}");

        record.setLoggerName("test");

        record.setParameters(new Object[] {System.getProperty("java.version")});

        final int nanos = record.getInstant().getNano() % NANOS_IN_MILLI;

        final long millis = record.getMillis();

        final Instant instant = record.getInstant();

        if (millis != instant.toEpochMilli()) {

            throw new RuntimeException("Unexpected millis: "

                    + record.getMillis());

        }

        test(record, false);

        // nano adjustment < 1ms (canonical case)

        int newNanos = (nanos + 111111) % NANOS_IN_MILLI;

        record.setInstant(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis % MILLIS_IN_SECOND) * NANOS_IN_MILLI + newNanos));

        assertEquals(newNanos, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis, record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newNanos),

                record.getInstant(), "record.getInstant()");

        test(record, false);

        assertEquals(newNanos, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis, record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newNanos),

                record.getInstant(), "record.getInstant()");

        // nano adjustment > 1ms - non canonical - should still work

        int newExceedingNanos = 2111_111;

        record.setInstant(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis % MILLIS_IN_SECOND) * NANOS_IN_MILLI + newExceedingNanos));

        assertEquals(newExceedingNanos % NANOS_IN_MILLI,

                record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis + newExceedingNanos / NANOS_IN_MILLI,

                record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        test(record, true);

        assertEquals(newExceedingNanos % NANOS_IN_MILLI,

                record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis  + newExceedingNanos / NANOS_IN_MILLI,

                record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        // nano adjustement > 1s - non canonical - should still work

        newExceedingNanos = 1111_111_111;

        record.setInstant(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis % MILLIS_IN_SECOND) * NANOS_IN_MILLI + newExceedingNanos));

        assertEquals(newExceedingNanos % NANOS_IN_MILLI,

                record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis  + newExceedingNanos / NANOS_IN_MILLI,

                record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        test(record, true);

        assertEquals(newExceedingNanos % NANOS_IN_MILLI,

                record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis  + newExceedingNanos / NANOS_IN_MILLI,

                record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        // nano adjustement < 0 - non canonical - should still work

        newExceedingNanos = -1;

        record.setInstant(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis % MILLIS_IN_SECOND) * NANOS_IN_MILLI + newExceedingNanos));

        assertEquals(newExceedingNanos + NANOS_IN_MILLI,

                record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        assertEquals(millis -1, record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        test(record, true);

        record.setInstant(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis % MILLIS_IN_SECOND) * NANOS_IN_MILLI + newExceedingNanos));

        assertEquals(millis -1, record.getMillis(), "record.getMillis()");

        assertEquals(Instant.ofEpochSecond(millis/MILLIS_IN_SECOND,

                (millis%MILLIS_IN_SECOND)*NANOS_IN_MILLI + newExceedingNanos),

                record.getInstant(), "record.getInstant()");

        // setMillis

        record.setMillis(millis-1);

        assertEquals(millis-1, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(millis-1, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        test(record, false);

        assertEquals(millis-1, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(millis-1, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        // setMillis to 0

        record.setMillis(0);

        assertEquals(0, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(0, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        test(record, false);

        assertEquals(0, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(0, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        // setMillis to -1

        record.setMillis(-1);

        assertEquals(-1, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(-1, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        test(record, false);

        assertEquals(-1, record.getInstant().toEpochMilli(),

                "record.getInstant().toEpochMilli()");

        assertEquals(-1, record.getMillis(),

                "record.getMillis()");

        assertEquals(0, record.getInstant().getNano() % NANOS_IN_MILLI,

                "record.getInstant().getNano() % NANOS_IN_MILLI");

        try {

            record.setInstant(null);

        } catch (NullPointerException x) {

            System.out.println("Got expected NPE when trying to call record.setInstant(null): " + x);

        }

    }

}