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Elasticsearch - Open Source, Distributed, RESTful Search Engine
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.bootstrap;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.elasticsearch.Build;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.cli.CliTool;
import org.elasticsearch.common.cli.CliToolConfig;
import org.elasticsearch.common.cli.Terminal;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.monitor.jvm.JvmInfo;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import static org.elasticsearch.common.cli.CliToolConfig.Builder.cmd;
import static org.elasticsearch.common.cli.CliToolConfig.Builder.optionBuilder;
final class BootstrapCLIParser extends CliTool {
private static final CliToolConfig CONFIG = CliToolConfig.config("elasticsearch", BootstrapCLIParser.class)
.cmds(Start.CMD, Version.CMD)
.build();
public BootstrapCLIParser() {
super(CONFIG);
}
public BootstrapCLIParser(Terminal terminal) {
super(CONFIG, terminal);
}
@Override
protected Command parse(String cmdName, CommandLine cli) throws Exception {
switch (cmdName.toLowerCase(Locale.ROOT)) {
case Start.NAME:
return Start.parse(terminal, cli);
case Version.NAME:
return Version.parse(terminal, cli);
default:
assert false : "should never get here, if the user enters an unknown command, an error message should be shown before parse is called";
return null;
}
}
static class Version extends CliTool.Command {
private static final String NAME = "version";
private static final CliToolConfig.Cmd CMD = cmd(NAME, Version.class).build();
public static Command parse(Terminal terminal, CommandLine cli) {
return new Version(terminal);
}
public Version(Terminal terminal) {
super(terminal);
}
@Override
public ExitStatus execute(Settings settings, Environment env) throws Exception {
terminal.println("Version: %s, Build: %s/%s, JVM: %s", org.elasticsearch.Version.CURRENT, Build.CURRENT.hashShort(), Build.CURRENT.timestamp(), JvmInfo.jvmInfo().version());
return ExitStatus.OK_AND_EXIT;
}
}
static class Start extends CliTool.Command {
private static final String NAME = "start";
private static final CliToolConfig.Cmd CMD = cmd(NAME, Start.class)
.options(
optionBuilder("d", "daemonize").hasArg(false).required(false),
optionBuilder("p", "pidfile").hasArg(true).required(false),
optionBuilder("V", "version").hasArg(false).required(false),
Option.builder("D").argName("property=value").valueSeparator('=').numberOfArgs(2)
)
.stopAtNonOption(true) // needed to parse the --foo.bar options, so this parser must be lenient
.build();
public static Command parse(Terminal terminal, CommandLine cli) {
if (cli.hasOption("V")) {
return Version.parse(terminal, cli);
}
if (cli.hasOption("d")) {
System.setProperty("es.foreground", "false");
}
String pidFile = cli.getOptionValue("pidfile");
if (!Strings.isNullOrEmpty(pidFile)) {
System.setProperty("es.pidfile", pidFile);
}
if (cli.hasOption("D")) {
Properties properties = cli.getOptionProperties("D");
for (Map.Entry entry : properties.entrySet()) {
String key = (String) entry.getKey();
String propertyName = key.startsWith("es.") ? key : "es." + key;
System.setProperty(propertyName, entry.getValue().toString());
}
}
// hacky way to extract all the fancy extra args, there is no CLI tool helper for this
Iterator iterator = cli.getArgList().iterator();
while (iterator.hasNext()) {
String arg = iterator.next();
if (!arg.startsWith("--")) {
if (arg.startsWith("-D") || arg.startsWith("-d") || arg.startsWith("-p")) {
throw new IllegalArgumentException(
"Parameter [" + arg + "] starting with \"-D\", \"-d\" or \"-p\" must be before any parameters starting with --"
);
} else {
throw new IllegalArgumentException("Parameter [" + arg + "]does not start with --");
}
}
// if there is no = sign, we have to get the next argu
arg = arg.replace("--", "");
if (arg.contains("=")) {
String[] splitArg = arg.split("=", 2);
String key = splitArg[0];
String value = splitArg[1];
System.setProperty("es." + key, value);
} else {
if (iterator.hasNext()) {
String value = iterator.next();
if (value.startsWith("--")) {
throw new IllegalArgumentException("Parameter [" + arg + "] needs value");
}
System.setProperty("es." + arg, value);
} else {
throw new IllegalArgumentException("Parameter [" + arg + "] needs value");
}
}
}
return new Start(terminal);
}
public Start(Terminal terminal) {
super(terminal);
}
@Override
public ExitStatus execute(Settings settings, Environment env) throws Exception {
return ExitStatus.OK;
}
}
}