ceph/src/rocksdb/java/src/main/java/org/rocksdb/OperationStage.java

   1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5
   6 package org.rocksdb;
   7
   8 /**
   9  * The operation stage.
  10  */
  11 public enum OperationStage {
  12   STAGE_UNKNOWN((byte)0x0),
  13   STAGE_FLUSH_RUN((byte)0x1),
  14   STAGE_FLUSH_WRITE_L0((byte)0x2),
  15   STAGE_COMPACTION_PREPARE((byte)0x3),
  16   STAGE_COMPACTION_RUN((byte)0x4),
  17   STAGE_COMPACTION_PROCESS_KV((byte)0x5),
  18   STAGE_COMPACTION_INSTALL((byte)0x6),
  19   STAGE_COMPACTION_SYNC_FILE((byte)0x7),
  20   STAGE_PICK_MEMTABLES_TO_FLUSH((byte)0x8),
  21   STAGE_MEMTABLE_ROLLBACK((byte)0x9),
  22   STAGE_MEMTABLE_INSTALL_FLUSH_RESULTS((byte)0xA);
  23
  24   private final byte value;
  25
  26   OperationStage(final byte value) {
  27     this.value = value;
  28   }
  29
  30   /**
  31    * Get the internal representation value.
  32    *
  33    * @return the internal representation value.
  34    */
  35   byte getValue() {
  36     return value;
  37   }
  38
  39   /**
  40    * Get the Operation stage from the internal representation value.
  41    *
  42    * @param value the internal representation value.
  43    *
  44    * @return the operation stage
  45    *
  46    * @throws IllegalArgumentException if the value does not match
  47    *     an OperationStage
  48    */
  49   static OperationStage fromValue(final byte value)
  50       throws IllegalArgumentException {
  51     for (final OperationStage threadType : OperationStage.values()) {
  52       if (threadType.value == value) {
  53         return threadType;
  54       }
  55     }
  56     throw new IllegalArgumentException(
  57         "Unknown value for OperationStage: " + value);
  58   }
  59 }