/**
* 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.hadoop.hdfs.server.namenode;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOp.*;
/**
* Op codes for edits file
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public enum FSEditLogOpCodes {
// last op code in file
OP_ADD ((byte) 0, AddOp.class),
// deprecated operation
OP_RENAME_OLD ((byte) 1, RenameOldOp.class),
OP_DELETE ((byte) 2, DeleteOp.class),
OP_MKDIR ((byte) 3, MkdirOp.class),
OP_SET_REPLICATION ((byte) 4, SetReplicationOp.class),
@Deprecated OP_DATANODE_ADD ((byte) 5), // obsolete
@Deprecated OP_DATANODE_REMOVE((byte) 6), // obsolete
OP_SET_PERMISSIONS ((byte) 7, SetPermissionsOp.class),
OP_SET_OWNER ((byte) 8, SetOwnerOp.class),
OP_CLOSE ((byte) 9, CloseOp.class),
OP_SET_GENSTAMP_V1 ((byte) 10, SetGenstampV1Op.class),
OP_SET_NS_QUOTA ((byte) 11, SetNSQuotaOp.class), // obsolete
OP_CLEAR_NS_QUOTA ((byte) 12, ClearNSQuotaOp.class), // obsolete
OP_TIMES ((byte) 13, TimesOp.class), // set atime, mtime
OP_SET_QUOTA ((byte) 14, SetQuotaOp.class),
// filecontext rename
OP_RENAME ((byte) 15, RenameOp.class),
// concat files
OP_CONCAT_DELETE ((byte) 16, ConcatDeleteOp.class),
OP_SYMLINK ((byte) 17, SymlinkOp.class),
OP_GET_DELEGATION_TOKEN ((byte) 18, GetDelegationTokenOp.class),
OP_RENEW_DELEGATION_TOKEN ((byte) 19, RenewDelegationTokenOp.class),
OP_CANCEL_DELEGATION_TOKEN ((byte) 20, CancelDelegationTokenOp.class),
OP_UPDATE_MASTER_KEY ((byte) 21, UpdateMasterKeyOp.class),
OP_REASSIGN_LEASE ((byte) 22, ReassignLeaseOp.class),
OP_END_LOG_SEGMENT ((byte) 23, EndLogSegmentOp.class),
OP_START_LOG_SEGMENT ((byte) 24, StartLogSegmentOp.class),
OP_UPDATE_BLOCKS ((byte) 25, UpdateBlocksOp.class),
OP_CREATE_SNAPSHOT ((byte) 26, CreateSnapshotOp.class),
OP_DELETE_SNAPSHOT ((byte) 27, DeleteSnapshotOp.class),
OP_RENAME_SNAPSHOT ((byte) 28, RenameSnapshotOp.class),
OP_ALLOW_SNAPSHOT ((byte) 29, AllowSnapshotOp.class),
OP_DISALLOW_SNAPSHOT ((byte) 30, DisallowSnapshotOp.class),
OP_SET_GENSTAMP_V2 ((byte) 31, SetGenstampV2Op.class),
OP_ALLOCATE_BLOCK_ID ((byte) 32, AllocateBlockIdOp.class),
OP_ADD_BLOCK ((byte) 33, AddBlockOp.class),
OP_ADD_CACHE_DIRECTIVE ((byte) 34, AddCacheDirectiveInfoOp.class),
OP_REMOVE_CACHE_DIRECTIVE ((byte) 35, RemoveCacheDirectiveInfoOp.class),
OP_ADD_CACHE_POOL ((byte) 36, AddCachePoolOp.class),
OP_MODIFY_CACHE_POOL ((byte) 37, ModifyCachePoolOp.class),
OP_REMOVE_CACHE_POOL ((byte) 38, RemoveCachePoolOp.class),
OP_MODIFY_CACHE_DIRECTIVE ((byte) 39, ModifyCacheDirectiveInfoOp.class),
OP_SET_ACL ((byte) 40, SetAclOp.class),
OP_ROLLING_UPGRADE_START ((byte) 41, RollingUpgradeStartOp.class),
OP_ROLLING_UPGRADE_FINALIZE ((byte) 42, RollingUpgradeFinalizeOp.class),
OP_SET_XATTR ((byte) 43, SetXAttrOp.class),
OP_REMOVE_XATTR ((byte) 44, RemoveXAttrOp.class),
OP_SET_STORAGE_POLICY ((byte) 45, SetStoragePolicyOp.class),
OP_TRUNCATE ((byte) 46, TruncateOp.class),
OP_APPEND ((byte) 47, AppendOp.class),
OP_SET_QUOTA_BY_STORAGETYPE ((byte) 48, SetQuotaByStorageTypeOp.class),
// Note that the current range of the valid OP code is 0~127
OP_INVALID ((byte) -1);
private final byte opCode;
private final Class<? extends FSEditLogOp> opClass;
/**
* Constructor
*
* @param opCode byte value of constructed enum
*/
FSEditLogOpCodes(byte opCode) {
this(opCode, null);
}
FSEditLogOpCodes(byte opCode, Class<? extends FSEditLogOp> opClass) {
this.opCode = opCode;
this.opClass = opClass;
}
/**
* return the byte value of the enum
*
* @return the byte value of the enum
*/
public byte getOpCode() {
return opCode;
}
public Class<? extends FSEditLogOp> getOpClass() {
return opClass;
}
private static final FSEditLogOpCodes[] VALUES;
static {
byte max = 0;
for (FSEditLogOpCodes code : FSEditLogOpCodes.values()) {
if (code.getOpCode() > max) {
max = code.getOpCode();
}
}
VALUES = new FSEditLogOpCodes[max + 1];
for (FSEditLogOpCodes code : FSEditLogOpCodes.values()) {
if (code.getOpCode() >= 0) {
VALUES[code.getOpCode()] = code;
}
}
}
/**
* Converts byte to FSEditLogOpCodes enum value
*
* @param opCode get enum for this opCode
* @return enum with byte value of opCode
*/
public static FSEditLogOpCodes fromByte(byte opCode) {
if (opCode >= 0 && opCode < VALUES.length) {
return VALUES[opCode];
}
return opCode == -1 ? OP_INVALID : null;
}
}