hadoop CryptoProtocolVersion 源码
haddop CryptoProtocolVersion 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoProtocolVersion.java
/**
* 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.crypto;
import org.apache.hadoop.classification.InterfaceAudience;
/**
* Versions of the client/server protocol used for HDFS encryption.
*/
@InterfaceAudience.Private
public enum CryptoProtocolVersion {
UNKNOWN("Unknown", 1),
ENCRYPTION_ZONES("Encryption zones", 2);
private final String description;
private final int version;
private Integer unknownValue = null;
private static CryptoProtocolVersion[] supported = {ENCRYPTION_ZONES};
/**
* @return Array of supported protocol versions.
*/
public static CryptoProtocolVersion[] supported() {
return supported;
}
CryptoProtocolVersion(String description, int version) {
this.description = description;
this.version = version;
}
/**
* Returns if a given protocol version is supported.
*
* @param version version number
* @return true if the version is supported, else false
*/
public static boolean supports(CryptoProtocolVersion version) {
if (version.getVersion() == UNKNOWN.getVersion()) {
return false;
}
for (CryptoProtocolVersion v : CryptoProtocolVersion.values()) {
if (v.getVersion() == version.getVersion()) {
return true;
}
}
return false;
}
public void setUnknownValue(int unknown) {
this.unknownValue = unknown;
}
public int getUnknownValue() {
return unknownValue;
}
public String getDescription() {
return description;
}
public int getVersion() {
return version;
}
@Override
public String toString() {
return "CryptoProtocolVersion{" +
"description='" + description + '\'' +
", version=" + version +
", unknownValue=" + unknownValue +
'}';
}
}
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