| /** |
| * 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.security.token.block; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.EnumSet; |
| |
| import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager.AccessMode; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.WritableUtils; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.token.TokenIdentifier; |
| |
| public class BlockTokenIdentifier extends TokenIdentifier { |
| static final Text KIND_NAME = new Text("HDFS_BLOCK_TOKEN"); |
| |
| private long expiryDate; |
| private int keyId; |
| private String userId; |
| private long [] blockIds; |
| private EnumSet<AccessMode> modes; |
| |
| private byte [] cache; |
| |
| public BlockTokenIdentifier() { |
| this(null, new long [] {}, EnumSet.noneOf(AccessMode.class)); |
| } |
| |
| public BlockTokenIdentifier(String userId, long [] blockIds, |
| EnumSet<AccessMode> modes) { |
| if(blockIds == null) |
| throw new IllegalArgumentException("blockIds can't be null"); |
| this.cache = null; |
| this.userId = userId; |
| this.blockIds = Arrays.copyOf(blockIds, blockIds.length); |
| Arrays.sort(this.blockIds); |
| this.modes = modes == null ? EnumSet.noneOf(AccessMode.class) : modes; |
| } |
| |
| @Override |
| public Text getKind() { |
| return KIND_NAME; |
| } |
| |
| @Override |
| public UserGroupInformation getUser() { |
| if (userId == null || "".equals(userId)) { |
| return UserGroupInformation.createRemoteUser(Arrays.toString(blockIds)); |
| } |
| return UserGroupInformation.createRemoteUser(userId); |
| } |
| |
| public long getExpiryDate() { |
| return expiryDate; |
| } |
| |
| public void setExpiryDate(long expiryDate) { |
| cache = null; |
| this.expiryDate = expiryDate; |
| } |
| |
| public int getKeyId() { |
| return this.keyId; |
| } |
| |
| public void setKeyId(int keyId) { |
| cache = null; |
| this.keyId = keyId; |
| } |
| |
| public String getUserId() { |
| return userId; |
| } |
| |
| /** |
| * Return sorted array of blockIds this {@link BlockTokenIdentifier} includes |
| */ |
| public long [] getBlockIds() { |
| return blockIds; |
| } |
| |
| /** |
| * Is specified blockId included in this BlockTokenIdentifier? |
| */ |
| public boolean isBlockIncluded(long blockId) { |
| switch(blockIds.length) { |
| case 1: |
| return blockIds[0] == blockId; |
| case 2: |
| return (blockIds[0] == blockId) || (blockIds[1] == blockId); |
| default: |
| return Arrays.binarySearch(blockIds, blockId) >= 0; |
| } |
| } |
| |
| public EnumSet<AccessMode> getAccessModes() { |
| return modes; |
| } |
| |
| @Override |
| public String toString() { |
| return "block_token_identifier (expiryDate=" + this.getExpiryDate() |
| + ", keyId=" + this.getKeyId() + ", userId=" + this.getUserId() |
| + ", blockIds=" + Arrays.toString(blockIds) + ", access modes=" |
| + this.getAccessModes() + ")"; |
| } |
| |
| static boolean isEqual(Object a, Object b) { |
| return a == null ? b == null : a.equals(b); |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (obj instanceof BlockTokenIdentifier) { |
| BlockTokenIdentifier that = (BlockTokenIdentifier) obj; |
| return this.expiryDate == that.expiryDate && this.keyId == that.keyId |
| && isEqual(this.userId, that.userId) |
| && Arrays.equals(this.blockIds, that.blockIds) |
| && isEqual(this.modes, that.modes); |
| } |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| public int hashCode() { |
| return (int) expiryDate ^ keyId ^ Arrays.hashCode(blockIds) ^ modes.hashCode() |
| ^ (userId == null ? 0 : userId.hashCode()); |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| cache = null; |
| expiryDate = WritableUtils.readVLong(in); |
| keyId = WritableUtils.readVInt(in); |
| userId = WritableUtils.readString(in); |
| blockIds = new long[WritableUtils.readVInt(in)]; |
| for(int i = 0; i < blockIds.length; i++) |
| blockIds[i] = WritableUtils.readVLong(in); |
| int length = WritableUtils.readVInt(in); |
| for (int i = 0; i < length; i++) { |
| modes.add(WritableUtils.readEnum(in, AccessMode.class)); |
| } |
| } |
| |
| public void write(DataOutput out) throws IOException { |
| WritableUtils.writeVLong(out, expiryDate); |
| WritableUtils.writeVInt(out, keyId); |
| WritableUtils.writeString(out, userId); |
| WritableUtils.writeVInt(out, blockIds.length); |
| for(int i = 0; i < blockIds.length; i++) |
| WritableUtils.writeVLong(out, blockIds[i]); |
| WritableUtils.writeVInt(out, modes.size()); |
| for (AccessMode aMode : modes) { |
| WritableUtils.writeEnum(out, aMode); |
| } |
| } |
| |
| @Override |
| public byte[] getBytes() { |
| if(cache == null) cache = super.getBytes(); |
| |
| return cache; |
| } |
| } |