/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.distributedlog;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.apache.bookkeeper.conf.ServerConfiguration;
import org.apache.bookkeeper.proto.BookieServer;
import org.apache.bookkeeper.stats.NullStatsProvider;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Test Cases for RollLogSegments.
 */
public class TestTxnId extends TestDistributedLogBase {
    private static final Logger logger = LoggerFactory.getLogger(TestRollLogSegments.class);

    @Test
    public void testRecoveryAfterBookieCrash() throws Exception {
        String name = "txnid-after-crash";
        DistributedLogConfiguration conf = new DistributedLogConfiguration()
            .setEnsembleSize(5)
            .setWriteQuorumSize(5)
            .setAckQuorumSize(5)
            .setLogSegmentRollingIntervalMinutes(0)
            .setLogSegmentRollingConcurrency(-1)
            .setMaxLogSegmentBytes(400000);

        long entryId = 0;
        List<BookieServer> extraBookies = new ArrayList<>();
        try {
            extraBookies.add(startExtraBookie());
            extraBookies.add(startExtraBookie());

            try (BKDistributedLogManager dlm = (BKDistributedLogManager) createNewDLM(conf, name);
                 BKAsyncLogWriter writer = dlm.startAsyncLogSegmentNonPartitioned()) {
                writer.write(DLMTestUtil.getLogRecordInstance(1, 100000)).join();
                writer.write(DLMTestUtil.getLogRecordInstance(2, 100000)).join();

                extraBookies.forEach(b -> b.shutdown());

                try {
                    writer.write(DLMTestUtil.getLogRecordInstance(3, 100000)).join();
                    Assert.fail("Shouldn't have succeeded");
                } catch (Exception e) {
                    // expected
                }

                writer.write(DLMTestUtil.getLogRecordInstance(4, 100000)).join();
                Assert.fail("Shouldn't be able to write");
            } catch (Exception e) {
                // expected
            }

            extraBookies.add(startExtraBookie());
            extraBookies.add(startExtraBookie());

            try (BKDistributedLogManager dlm = (BKDistributedLogManager) createNewDLM(conf, name);
                 BKAsyncLogWriter writer = dlm.startAsyncLogSegmentNonPartitioned()) {
                long firstTxid = dlm.getLastTxId() + 1;
                for (int i = 0; i < 20; i++) {
                    logger.info("Writing entry {}", i);
                    writer.write(DLMTestUtil.getLogRecordInstance(firstTxid + i, 100000)).join();
                    Thread.sleep(100);
                }
            }
        } finally {
            extraBookies.forEach(b -> b.shutdown());
        }
    }

    private BookieServer startExtraBookie() throws Exception {
        File journalDir = File.createTempFile("bookie", "journal");
        journalDir.delete();
        journalDir.mkdir();
        TMP_DIRS.add(journalDir);

        File ledgerDir =  File.createTempFile("bookie", "ledger");
        ledgerDir.delete();
        ledgerDir.mkdir();
        TMP_DIRS.add(ledgerDir);

        ServerConfiguration conf = new ServerConfiguration();
        conf.setMetadataServiceUri("zk://" + zkServers + "/ledgers");
        conf.setBookiePort(0);
        conf.setDiskUsageThreshold(0.99f);
        conf.setAllowLoopback(true);
        conf.setJournalDirName(journalDir.getPath());
        conf.setLedgerDirNames(new String[] { ledgerDir.getPath() });

        BookieServer server = new BookieServer(conf, new NullStatsProvider().getStatsLogger(""));
        server.start();

        while (!server.isRunning()) {
            Thread.sleep(10);
        }
        return server;
    }
}