/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.master.commands;
import java.io.IOException;
import com.cloudera.flume.master.Command;
import com.cloudera.flume.master.Execable;
import com.cloudera.flume.master.FlumeMaster;
import com.cloudera.flume.master.MasterExecException;
import com.google.common.base.Preconditions;
/**
* Form and command generator for unmapping a logical node from a physical node.
*/
public class UnmapLogicalNodeForm {
String physicalNode;
String logicalNode;
public String getPhysicalNode() {
return physicalNode;
}
public void setPhysicalNode(String physicalNode) {
this.physicalNode = physicalNode;
}
public String getLogicalNode() {
return logicalNode;
}
public void setLogicalNode(String logicalNode) {
this.logicalNode = logicalNode;
}
/**
* Convert this bean into a command.
*/
public Command toCommand() {
String[] args = { physicalNode, logicalNode };
return new Command("unmap", args);
}
/**
* Build an execable that will execute the command.
*/
public static Execable buildExecable() {
return new Execable() {
@Override
public void exec(String[] args) throws MasterExecException, IOException {
Preconditions.checkArgument(args.length == 2, "Usage: physicalNode logicalNode");
String physical = args[0];
String logical = args[1];
FlumeMaster.getInstance().getSpecMan().unmapLogicalNode(physical,
logical);
}
};
}
/**
* Build an execable that will unmap all Logical nodes.
*/
public static Execable buildUnmapAllExecable() {
return new Execable() {
@Override
public void exec(String[] args) throws IOException {
Preconditions.checkArgument(args.length == 0);
FlumeMaster.getInstance().getSpecMan().unmapAllLogicalNodes();
}
};
}
}