content: /*
   *
   * 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.bookkeeper.bookie.storage;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  
  import com.google.common.util.concurrent.MoreExecutors;
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.ByteBufAllocator;
  import io.netty.buffer.Unpooled;
  import java.io.File;
  import java.util.Arrays;
  import org.apache.bookkeeper.bookie.DefaultEntryLogger;
  import org.apache.bookkeeper.bookie.LedgerDirsManager;
  import org.apache.bookkeeper.bookie.storage.directentrylogger.DirectEntryLogger;
  import org.apache.bookkeeper.bookie.storage.directentrylogger.EntryLogIdsImpl;
  import org.apache.bookkeeper.common.util.nativeio.NativeIOImpl;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.slogger.Slogger;
  import org.apache.bookkeeper.stats.NullStatsLogger;
  import org.apache.bookkeeper.util.DiskChecker;
  
  /**
   * EntryLogTestUtils.
   */
  public class EntryLogTestUtils {
      private static final Slogger slog = Slogger.CONSOLE;
  
      public static LedgerDirsManager newDirsManager(File... ledgerDir) throws Exception {
          return new LedgerDirsManager(
                  new ServerConfiguration(), ledgerDir, new DiskChecker(0.999f, 0.999f));
      }
  
      public static EntryLogger newLegacyEntryLogger(int logSizeLimit, File... ledgerDir) throws Exception {
          ServerConfiguration conf = new ServerConfiguration();
          conf.setEntryLogSizeLimit(logSizeLimit);
          return new DefaultEntryLogger(conf, newDirsManager(ledgerDir), null,
                                 NullStatsLogger.INSTANCE, ByteBufAllocator.DEFAULT);
      }
  
      public static DirectEntryLogger newDirectEntryLogger(int logSizeLimit, File ledgerDir) throws Exception {
          File curDir = new File(ledgerDir, "current");
          curDir.mkdirs();
  
          return new DirectEntryLogger(
                  curDir, new EntryLogIdsImpl(newDirsManager(ledgerDir), slog),
                  new NativeIOImpl(),
                  ByteBufAllocator.DEFAULT,
                  MoreExecutors.newDirectExecutorService(),
                  MoreExecutors.newDirectExecutorService(),
                  logSizeLimit, // max file size
                  10 * 1024 * 1024, // max sane entry size
                  1024 * 1024, // total write buffer size
                  1024 * 1024, // total read buffer size
                  64 * 1024, // read buffer size
                  1, // numReadThreads
                  300, // max fd cache time in seconds
                  slog, NullStatsLogger.INSTANCE);
      }
  
      public static int logIdFromLocation(long location) {
          return (int) (location >> 32);
      }
  
      public static ByteBuf makeEntry(long ledgerId, long entryId, int size) {
          return makeEntry(ledgerId, entryId, size, (byte) 0xdd);
      }
  
      public static ByteBuf makeEntry(long ledgerId, long entryId, int size, byte pattern) {
          ByteBuf buf = Unpooled.buffer(size);
          buf.writeLong(ledgerId).writeLong(entryId);
          byte[] data = new byte[buf.writableBytes()];
          Arrays.fill(data, pattern);
          buf.writeBytes(data);
          return buf;
      }
  
      public static void assertEntryEquals(ByteBuf e1, ByteBuf e2) throws Exception {
          assertThat(e1.readableBytes(), equalTo(e2.readableBytes()));
          assertThat(e1, equalTo(e2));
      }
  
  }
  
  