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/**
* 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.activemq.console.command;
import org.apache.activemq.console.CommandContext;
import org.apache.activemq.console.formatter.CommandShellOutputFormatter;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.*;
public class ShellCommand extends AbstractCommand {
private boolean interactive;
private String[] helpFile;
public ShellCommand() {
this(false);
}
public ShellCommand(boolean interactive) {
this.interactive = interactive;
ArrayList help = new ArrayList();
help.addAll(Arrays.asList(new String[] {
interactive ? "Usage: [task] [task-options] [task data]" : "Usage: Main [--extdir ] [task] [task-options] [task data]",
"",
"Tasks:"}));
ArrayList commands = getCommands();
Collections.sort(commands, new Comparator() {
@Override
public int compare(Command command, Command command1) {
return command.getName().compareTo(command1.getName());
}
});
for( Command command: commands) {
help.add(String.format(" %-24s - %s", command.getName(), command.getOneLineDescription()));
}
help.addAll(Arrays.asList(new String[] {
"",
"Task Options (Options specific to each task):",
" --extdir - Add the jar files in the directory to the classpath.",
" --version - Display the version information.",
" -h,-?,--help - Display this help information. To display task specific help, use " + (interactive ? "" : "Main ") + "[task] -h,-?,--help",
"",
"Task Data:",
" - Information needed by each specific task.",
"",
"JMX system property options:",
" -Dactivemq.jmx.url= (default is: 'service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi')",
" -Dactivemq.jmx.user=",
" -Dactivemq.jmx.password=",
""
}));
this.helpFile = help.toArray(new String[help.size()]);
}
@Override
public String getName() {
return "shell";
}
@Override
public String getOneLineDescription() {
return "Runs the activemq sub shell";
}
/**
* Main method to run a command shell client.
*
* @param args - command line arguments
* @param in - input stream to use
* @param out - output stream to use
* @return 0 for a successful run, -1 if there are any exception
*/
public static int main(String[] args, InputStream in, PrintStream out) {
CommandContext context = new CommandContext();
context.setFormatter(new CommandShellOutputFormatter(out));
// Convert arguments to list for easier management
List tokens = new ArrayList(Arrays.asList(args));
ShellCommand main = new ShellCommand();
try {
main.setCommandContext(context);
main.execute(tokens);
return 0;
} catch (Exception e) {
context.printException(e);
return 1;
}
}
public static void main(String[] args) {
main(args, System.in, System.out);
}
public boolean isInteractive() {
return interactive;
}
public void setInteractive(boolean interactive) {
this.interactive = interactive;
}
/**
* Parses for specific command task.
*
* @param tokens - command arguments
* @throws Exception
*/
protected void runTask(List tokens) throws Exception {
// Process task token
if (tokens.size() > 0) {
Command command=null;
String taskToken = (String)tokens.remove(0);
for( Command c: getCommands() ) {
if( taskToken.equals(c.getName()) ) {
command = c;
break;
}
}
if( command == null ) {
if (taskToken.equals("help")) {
printHelp();
} else {
printHelp();
}
}
if( command!=null ) {
command.setCommandContext(context);
command.execute(tokens);
}
} else {
printHelp();
}
}
ArrayList getCommands() {
ServiceLoader loader = ServiceLoader.load(Command.class);
Iterator iterator = loader.iterator();
ArrayList rc = new ArrayList();
boolean done = false;
while (!done) {
try {
if( iterator.hasNext() ) {
rc.add(iterator.next());
} else {
done = true;
}
} catch (ServiceConfigurationError e) {
// it's ok, some commands may not load if their dependencies
// are not available.
}
}
return rc;
}
/**
* Print the help messages for the browse command
*/
protected void printHelp() {
context.printHelp(helpFile);
}
}
