hadoop WccAttr 源码
haddop WccAttr 代码
文件路径：/hadoop-common-project/hadoop-nfs/src/main/java/org/apache/hadoop/nfs/nfs3/response/WccAttr.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.nfs.nfs3.response;
import org.apache.hadoop.nfs.NfsTime;
import org.apache.hadoop.oncrpc.XDR;
/**
* WccAttr saves attributes used for weak cache consistency
*/
public class WccAttr {
long size;
NfsTime mtime; // in milliseconds
NfsTime ctime; // in milliseconds
public long getSize() {
return size;
}
public NfsTime getMtime() {
return mtime;
}
public NfsTime getCtime() {
return ctime;
}
public WccAttr() {
this.size = 0;
mtime = null;
ctime = null;
}
public WccAttr(long size, NfsTime mtime, NfsTime ctime) {
this.size = size;
this.mtime = mtime;
this.ctime = ctime;
}
public static WccAttr deserialize(XDR xdr) {
long size = xdr.readHyper();
NfsTime mtime = NfsTime.deserialize(xdr);
NfsTime ctime = NfsTime.deserialize(xdr);
return new WccAttr(size, mtime, ctime);
}
public void serialize(XDR out) {
out.writeLongAsHyper(size);
if (mtime == null) {
mtime = new NfsTime(0);
}
mtime.serialize(out);
if (ctime == null) {
ctime = new NfsTime(0);
}
ctime.serialize(out);
}
}
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