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.tools.cli.commands.bookie;
  
  import io.netty.buffer.ByteBuf;
  import java.util.Formatter;
  import org.apache.bookkeeper.bookie.BookieImpl;
  import org.apache.bookkeeper.util.EntryFormatter;
  import org.apache.bookkeeper.util.LedgerIdFormatter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * .Provide to format message.
   */
  public class FormatUtil {
  
      private static final Logger LOG = LoggerFactory.getLogger(FormatUtil.class);
  
      /**
       * Format the message into a readable format.
       * @param pos
       *          File offset of the message stored in entry log file
       * @param recBuff
       *          Entry Data
       * @param printMsg
       *          Whether printing the message body
       * @param ledgerIdFormatter
       * @param entryFormatter
       */
      public static void formatEntry(long pos, ByteBuf recBuff, boolean printMsg, LedgerIdFormatter ledgerIdFormatter,
                                     EntryFormatter entryFormatter) {
          int entrySize = recBuff.readableBytes();
          long ledgerId = recBuff.readLong();
          long entryId = recBuff.readLong();
  
          LOG.info("--------- Lid={}, Eid={}, ByteOffset={}, EntrySize={} ---------",
              ledgerIdFormatter.formatLedgerId(ledgerId), entryId, pos, entrySize);
          if (entryId == BookieImpl.METAENTRY_ID_LEDGER_KEY) {
              int masterKeyLen = recBuff.readInt();
              byte[] masterKey = new byte[masterKeyLen];
              recBuff.readBytes(masterKey);
              LOG.info("Type:           META");
              LOG.info("MasterKey:      {}", bytes2Hex(masterKey));
              LOG.info("");
              return;
          }
          if (entryId == BookieImpl.METAENTRY_ID_FENCE_KEY) {
              LOG.info("Type:           META");
              LOG.info("Fenced");
              LOG.info("");
              return;
          }
          // process a data entry
          long lastAddConfirmed = recBuff.readLong();
          LOG.info("Type:           DATA");
          LOG.info("LastConfirmed:  {}", lastAddConfirmed);
          if (!printMsg) {
              LOG.info("");
              return;
          }
          // skip digest checking
          recBuff.skipBytes(8);
          LOG.info("Data:");
          LOG.info("");
          try {
              byte[] ret = new byte[recBuff.readableBytes()];
              recBuff.readBytes(ret);
              entryFormatter.formatEntry(ret);
          } catch (Exception e) {
              LOG.info("N/A. Corrupted.");
          }
          LOG.info("");
      }
  
      public static String bytes2Hex(byte[] data) {
          StringBuilder sb = new StringBuilder(data.length * 2);
          Formatter formatter = new Formatter(sb);
          for (byte b : data) {
              formatter.format("%02x", b);
          }
          formatter.close();
          return sb.toString();
      }
  }
  