/**
* 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.google.common.base.Preconditions;
/**
* This refreshes the data flow spec for all nodes by re-inserting it into the
* ConfigManager. This is useful for updating failure chains when new collectors
* are added, or just forcing a logical node to open and close.
*/
public class RefreshAllCommand {
/**
* Build a command for the command manager.
*/
public Command toCommand() {
return new Command("refreshAll");
}
/**
* Actual Command execution.
*/
public static Execable buildExecable() {
return new Execable() {
@Override
public void exec(String[] argv) throws IOException {
Preconditions.checkArgument(argv.length == 0);
FlumeMaster master = FlumeMaster.getInstance();
master.getSpecMan().refreshAll();
}
};
}
}