/*
* 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.accumulo.core.util.shell.commands;
import java.util.ArrayList;
import java.util.List;
import org.apache.accumulo.core.client.admin.InstanceOperations;
import org.apache.accumulo.core.util.shell.Shell;
import org.apache.accumulo.core.util.shell.Shell.Command;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
public class ListScansCommand extends Command {
private Option tserverOption, disablePaginationOpt;
@Override
public String description() {
return "list what scans are currently running in accumulo. See the accumulo.core.client.admin.ActiveScan javadoc for more information about columns.";
}
@Override
public int execute(String fullCommand, CommandLine cl, Shell shellState) throws Exception {
List<String> tservers;
InstanceOperations instanceOps = shellState.getConnector().instanceOperations();
boolean paginate = !cl.hasOption(disablePaginationOpt.getOpt());
if (cl.hasOption(tserverOption.getOpt())) {
tservers = new ArrayList<String>();
tservers.add(cl.getOptionValue(tserverOption.getOpt()));
} else {
tservers = instanceOps.getTabletServers();
}
shellState.printLines(new ActiveScanIterator(tservers, instanceOps), paginate);
return 0;
}
@Override
public int numArgs() {
return 0;
}
@Override
public Options getOptions() {
Options opts = new Options();
tserverOption = new Option("ts", "tabletServer", true, "list scans for a specific tablet server");
tserverOption.setArgName("tablet server");
opts.addOption(tserverOption);
disablePaginationOpt = new Option("np", "no-pagination", false, "disables pagination of output");
opts.addOption(disablePaginationOpt);
return opts;
}
}