/*
* 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.Iterator;
import java.util.List;
import org.apache.accumulo.core.client.IteratorSetting;
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.OptionGroup;
import org.apache.commons.cli.Options;
public class DeleteScanIterCommand extends Command {
private Option nameOpt, allOpt;
@Override
public int execute(final String fullCommand, final CommandLine cl, final Shell shellState) throws Exception {
final String tableName = OptUtil.getTableOpt(cl, shellState);
if (cl.hasOption(allOpt.getOpt())) {
final List<IteratorSetting> tableScanIterators = shellState.scanIteratorOptions.remove(tableName);
if (tableScanIterators == null) {
Shell.log.info("No scan iterators set on table " + tableName);
} else {
Shell.log.info("Removed the following scan iterators from table " + tableName + ":" + tableScanIterators);
}
} else if (cl.hasOption(nameOpt.getOpt())) {
final String name = cl.getOptionValue(nameOpt.getOpt());
final List<IteratorSetting> tableScanIterators = shellState.scanIteratorOptions.get(tableName);
if (tableScanIterators != null) {
boolean found = false;
for (Iterator<IteratorSetting> iter = tableScanIterators.iterator(); iter.hasNext();) {
if (iter.next().getName().equals(name)) {
iter.remove();
found = true;
break;
}
}
if (!found) {
Shell.log.info("No iterator named " + name + " found for table " + tableName);
} else {
Shell.log.info("Removed scan iterator " + name + " from table " + tableName + " (" + shellState.scanIteratorOptions.get(tableName).size() + " left)");
if (shellState.scanIteratorOptions.get(tableName).size() == 0) {
shellState.scanIteratorOptions.remove(tableName);
}
}
} else {
Shell.log.info("No iterator named " + name + " found for table " + tableName);
}
}
return 0;
}
@Override
public String description() {
return "deletes a table-specific scan iterator so it is no longer used during this shell session";
}
@Override
public Options getOptions() {
final Options o = new Options();
OptionGroup nameGroup = new OptionGroup();
nameOpt = new Option("n", "name", true, "iterator to delete");
nameOpt.setArgName("itername");
allOpt = new Option("a", "all", false, "delete all scan iterators");
allOpt.setArgName("all");
nameGroup.addOption(nameOpt);
nameGroup.addOption(allOpt);
nameGroup.setRequired(true);
o.addOptionGroup(nameGroup);
o.addOption(OptUtil.tableOpt("table to delete scan iterators from"));
return o;
}
@Override
public int numArgs() {
return 0;
}
}