/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.command.driver;
import java.io.PrintWriter;
import java.util.TreeMap;
import javax.naming.NameNotFoundException;
import org.jnode.driver.ApiNotFoundException;
import org.jnode.driver.Device;
import org.jnode.driver.DeviceAPI;
import org.jnode.driver.DeviceInfoAPI;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.DeviceNotFoundException;
import org.jnode.driver.DriverException;
import org.jnode.naming.InitialNaming;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.DeviceArgument;
import org.jnode.shell.syntax.EnumArgument;
/**
* @author epr
* @author crawley@jnode.org
*/
public class DeviceCommand extends AbstractCommand {
private static enum Action {
start, stop, restart, remove;
}
private static class ActionArgument extends EnumArgument<Action> {
public ActionArgument() {
super("action", Argument.OPTIONAL, Action.class, "action to be performed on device");
}
@Override
protected String argumentKind() {
return "{start,stop,restart,remove}";
}
}
private static ActionArgument ARG_ACTION = new ActionArgument();
private final DeviceArgument ARG_DEVICE =
new DeviceArgument("device", Argument.OPTIONAL, "the target device");
public DeviceCommand() {
super("Examine or manage a device");
registerArguments(ARG_ACTION, ARG_DEVICE);
}
public static void main(String[] args) throws Exception {
new DeviceCommand().execute(args);
}
@Override
public void execute() throws Exception {
PrintWriter out = getOutput().getPrintWriter();
PrintWriter err = getError().getPrintWriter();
if (ARG_ACTION.isSet()) {
if (!ARG_DEVICE.isSet()) {
err.println("No target device specified");
exit(1);
}
switch (ARG_ACTION.getValue()) {
case restart:
restartDevice(ARG_DEVICE.getValue());
break;
case start:
startDevice(ARG_DEVICE.getValue());
break;
case stop:
stopDevice(ARG_DEVICE.getValue());
break;
case remove:
removeDevice(ARG_DEVICE.getValue());
break;
}
} else if (ARG_DEVICE.isSet()) {
showDevice(out, ARG_DEVICE.getValue());
} else {
showDevices(out);
}
}
/**
* Stop the given device.
* @param device
* @throws DriverException
* @throws DeviceNotFoundException
*/
private void stopDevice(Device device) throws DeviceNotFoundException, DriverException {
device.getManager().stop(device);
}
/**
* Stop and Remove the given device.
* @param device
* @throws DriverException
* @throws DeviceNotFoundException
*/
private void removeDevice(Device device) throws DeviceNotFoundException, DriverException {
device.getManager().stop(device);
device.getManager().unregister(device);
}
/**
* Start the given device
* @param device
* @throws DriverException
* @throws DeviceNotFoundException
*/
private void startDevice(Device device) throws DeviceNotFoundException, DriverException {
device.getManager().start(device);
}
/**
* Stop and start the given device.
* @param device
* @throws DriverException
* @throws DeviceNotFoundException
*/
private void restartDevice(Device device) throws DeviceNotFoundException, DriverException {
device.getManager().stop(device);
device.getManager().start(device);
}
/**
* Display information about a given device
*
* @param out
* @param dev
*/
protected void showDevice(PrintWriter out, Device dev) {
final String prefix = " ";
out.println("Device: " + dev.getId());
final String drvClassName = dev.getDriverClassName();
if (dev.isStarted()) {
out.println(prefix + "state:started");
} else {
out.println(prefix + "state:stopped");
}
if (drvClassName != null) {
out.println(prefix + "driver:" + drvClassName);
} else {
out.println(prefix + "driver:none");
}
out.println(prefix + "implemented API's:");
for (Class<? extends DeviceAPI> api : dev.implementedAPIs()) {
out.println(prefix + prefix + api.getName());
}
out.println();
final PrintWriter pw = new PrintWriter(out);
try {
final DeviceInfoAPI infoApi = dev.getAPI(DeviceInfoAPI.class);
if (infoApi != dev) {
infoApi.showInfo(pw);
}
} catch (ApiNotFoundException ex) {
// Ignore
}
if (dev instanceof DeviceInfoAPI) {
((DeviceInfoAPI) dev).showInfo(pw);
}
}
/**
* Display information about all devices
*
* @param out
* @throws NameNotFoundException
*/
protected void showDevices(PrintWriter out) throws NameNotFoundException {
// Create a sorted list
final TreeMap<String, Device> tm = new TreeMap<String, Device>();
final DeviceManager dm = InitialNaming.lookup(DeviceManager.NAME);
for (Device dev : dm.getDevices()) {
tm.put(dev.getId(), dev);
}
for (Device dev : tm.values()) {
out.print(dev.getId());
final String drvClassName = dev.getDriverClassName();
if (dev.isStarted()) {
out.print("\tstarted");
} else {
out.print("\tstopped");
}
if (drvClassName != null) {
out.print("\tdriver:" + drvClassName);
} else {
out.print("\tdriver:none");
}
out.println();
}
}
}