hadoop RefreshResponse 源码
haddop RefreshResponse 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RefreshResponse.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.ipc;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Return a response in the handler method for the user to see.
* Useful since you may want to display status to a user even though an
* error has not occurred.
*/
@InterfaceStability.Unstable
public class RefreshResponse {
private int returnCode = -1;
private String message;
private String senderName;
/**
* Convenience method to create a response for successful refreshes.
* @return void response
*/
public static RefreshResponse successResponse() {
return new RefreshResponse(0, "Success");
}
// Most RefreshHandlers will use this
public RefreshResponse(int returnCode, String message) {
this.returnCode = returnCode;
this.message = message;
}
/**
* Optionally set the sender of this RefreshResponse.
* This helps clarify things when multiple handlers respond.
* @param name The name of the sender
*/
public void setSenderName(String name) {
senderName = name;
}
public String getSenderName() { return senderName; }
public int getReturnCode() { return returnCode; }
public void setReturnCode(int rc) { returnCode = rc; }
public void setMessage(String m) { message = m; }
public String getMessage() { return message; }
@Override
public String toString() {
String ret = "";
if (senderName != null) {
ret += senderName + ": ";
}
if (message != null) {
ret += message;
}
ret += " (exit " + returnCode + ")";
return ret;
}
}
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