/*
* 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.io.IOException;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Formatter;
import java.util.HashSet;
import java.util.Set;
import org.apache.accumulo.core.Constants;
import org.apache.accumulo.core.client.Instance;
import org.apache.accumulo.core.conf.AccumuloConfiguration;
import org.apache.accumulo.core.conf.Property;
import org.apache.accumulo.core.util.shell.Shell;
import org.apache.accumulo.core.util.shell.Shell.Command;
import org.apache.accumulo.core.zookeeper.ZooUtil;
import org.apache.accumulo.fate.AdminUtil;
import org.apache.accumulo.fate.ReadOnlyTStore.TStatus;
import org.apache.accumulo.fate.ZooStore;
import org.apache.accumulo.fate.zookeeper.IZooReaderWriter;
import org.apache.accumulo.fate.zookeeper.ZooReaderWriter;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.zookeeper.KeeperException;
/**
* Manage FATE transactions
*
*/
public class FateCommand extends Command {
private static final String SCHEME = "digest";
private static final String USER = "accumulo";
private Option secretOption;
private Option statusOption;
@Override
public int execute(final String fullCommand, final CommandLine cl, final Shell shellState) throws ParseException, KeeperException, InterruptedException,
IOException {
Instance instance = shellState.getInstance();
String[] args = cl.getArgs();
if (args.length <= 0) {
throw new ParseException("Must provide a command to execute");
}
String cmd = args[0];
boolean failedCommand = false;
AdminUtil<FateCommand> admin = new AdminUtil<FateCommand>(false);
String path = ZooUtil.getRoot(instance) + Constants.ZFATE;
String masterPath = ZooUtil.getRoot(instance) + Constants.ZMASTER_LOCK;
IZooReaderWriter zk = getZooReaderWriter(shellState.getInstance(), cl.getOptionValue(secretOption.getOpt()));
ZooStore<FateCommand> zs = new ZooStore<FateCommand>(path, zk);
if ("fail".equals(cmd)) {
if (args.length <= 1) {
throw new ParseException("Must provide transaction ID");
}
for (int i = 1; i < args.length; i++) {
if (!admin.prepFail(zs, zk, masterPath, args[i])) {
System.out.printf("Could not fail transaction: %s%n", args[i]);
failedCommand = true;
}
}
} else if ("delete".equals(cmd)) {
if (args.length <= 1) {
throw new ParseException("Must provide transaction ID");
}
for (int i = 1; i < args.length; i++) {
if (admin.prepDelete(zs, zk, masterPath, args[i])) {
admin.deleteLocks(zs, zk, ZooUtil.getRoot(instance) + Constants.ZTABLE_LOCKS, args[i]);
} else {
System.out.printf("Could not delete transaction: %s%n", args[i]);
failedCommand = true;
}
}
} else if ("list".equals(cmd) || "print".equals(cmd)) {
// Parse transaction ID filters for print display
Set<Long> filterTxid = null;
if (args.length >= 2) {
filterTxid = new HashSet<Long>(args.length);
for (int i = 1; i < args.length; i++) {
try {
Long val = Long.parseLong(args[i], 16);
filterTxid.add(val);
} catch (NumberFormatException nfe) {
// Failed to parse, will exit instead of displaying everything since the intention was to potentially filter some data
System.out.printf("Invalid transaction ID format: %s%n", args[i]);
return 1;
}
}
}
// Parse TStatus filters for print display
EnumSet<TStatus> filterStatus = null;
if (cl.hasOption(statusOption.getOpt())) {
filterStatus = EnumSet.noneOf(TStatus.class);
String[] tstat = cl.getOptionValues(statusOption.getOpt());
for (int i = 0; i < tstat.length; i++) {
try {
filterStatus.add(TStatus.valueOf(tstat[i]));
} catch (IllegalArgumentException iae) {
System.out.printf("Invalid transaction status name: %s%n", tstat[i]);
return 1;
}
}
}
StringBuilder buf = new StringBuilder(8096);
Formatter fmt = new Formatter(buf);
admin.print(zs, zk, ZooUtil.getRoot(instance) + Constants.ZTABLE_LOCKS, fmt, filterTxid, filterStatus);
shellState.printLines(Collections.singletonList(buf.toString()).iterator(), true);
} else {
throw new ParseException("Invalid command option");
}
return failedCommand ? 1 : 0;
}
protected synchronized IZooReaderWriter getZooReaderWriter(Instance instance, String secret) {
if (secret == null) {
@SuppressWarnings("deprecation")
AccumuloConfiguration conf = AccumuloConfiguration.getSiteConfiguration();
secret = conf.get(Property.INSTANCE_SECRET);
}
return new ZooReaderWriter(instance.getZooKeepers(), instance.getZooKeepersSessionTimeOut(), SCHEME, (USER + ":" + secret).getBytes());
}
@Override
public String description() {
return "manage FATE transactions";
}
@Override
public String usage() {
return getName() + " fail <txid>... | delete <txid>... | print [<txid>...]";
}
@Override
public Options getOptions() {
final Options o = new Options();
secretOption = new Option("s", "secret", true, "specify the instance secret to use");
secretOption.setOptionalArg(false);
o.addOption(secretOption);
statusOption = new Option("t", "status-type", true,
"filter 'print' on the transaction status type(s) {NEW, IN_PROGRESS, FAILED_IN_PROGRESS, FAILED, SUCCESSFUL}");
statusOption.setArgs(Option.UNLIMITED_VALUES);
statusOption.setOptionalArg(false);
o.addOption(statusOption);
return o;
}
@Override
public int numArgs() {
// Arg length varies between 1 to n
return -1;
}
}