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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.server.ide;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collections;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.osee.framework.core.server.UnsecuredOseeHttpServlet;
import org.eclipse.osee.framework.core.util.OsgiUtil;
import org.eclipse.osee.framework.jdk.core.util.Lib;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.logger.Log;
import org.eclipse.osgi.framework.console.CommandInterpreter;
import org.eclipse.osgi.framework.console.CommandProvider;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.util.tracker.ServiceTracker;
/**
* @author Roberto E. Escobar
*/
public class AdminServlet extends UnsecuredOseeHttpServlet {
private static final long serialVersionUID = -4391079960307521104L;
private final BundleContext context;
public AdminServlet(Log logger, BundleContext context) {
super(logger);
this.context = context;
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setStatus(HttpServletResponse.SC_OK);
PrintWriter writer = resp.getWriter();
Map<String, CommandProvider> cmds = getCommands(context);
for (CommandProvider commandProvider : cmds.values()) {
writer.append(commandProvider.getHelp());
}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
String cmd = req.getParameter("cmd");
String argList = req.getParameter("args");
List<String> args;
if (Strings.isValid(argList)) {
args = Arrays.asList(argList.split(","));
} else {
args = Collections.emptyList();
}
resp.setStatus(HttpServletResponse.SC_OK);
CommandInterpreter interpreter = new HttpCommandInterpreter(context, resp.getWriter(), args.iterator());
Object object = interpreter.execute(cmd);
if (object instanceof Job) {
Job job = (Job) object;
try {
job.join();
IStatus status = job.getResult();
interpreter.println(status.toString());
} catch (InterruptedException ex) {
interpreter.print(ex);
}
} else if (object instanceof Future<?>) {
Future<?> future = (Future<?>) object;
try {
future.get();
} catch (Exception ex) {
interpreter.print(ex);
}
}
}
private static String commandKey(String rawCommand) {
return "_" + rawCommand;
}
private static Map<String, CommandProvider> getCommands(BundleContext context) {
Map<String, CommandProvider> data = new HashMap<>();
ServiceTracker<CommandProvider, CommandProvider> tracker =
new ServiceTracker<CommandProvider, CommandProvider>(context, CommandProvider.class, null);
tracker.open(true);
try {
Object[] services = tracker.getServices();
for (Object service : services) {
CommandProvider commandProvider = (CommandProvider) service;
for (Method method : commandProvider.getClass().getMethods()) {
String methodName = method.getName();
if (methodName.startsWith("_")) {
data.put(methodName, commandProvider);
}
}
}
} finally {
OsgiUtil.close(tracker);
}
return data;
}
private static final class HttpCommandInterpreter implements CommandInterpreter {
private final Writer writer;
private final BundleContext context;
private final Iterator<String> args;
public HttpCommandInterpreter(BundleContext context, Writer writer, Iterator<String> args) {
this.writer = writer;
this.context = context;
this.args = args;
}
@Override
public String nextArgument() {
return args.hasNext() ? args.next() : null;
}
@Override
public Object execute(String cmd) {
String methodName = commandKey(cmd);
Map<String, CommandProvider> commands = getCommands(context);
CommandProvider commandProvider = commands.get(methodName);
Class<?> providerClass = commandProvider.getClass();
Object toReturn = null;
try {
Method method = providerClass.getMethod(methodName, CommandInterpreter.class);
toReturn = method.invoke(commandProvider, this);
} catch (Exception ex) {
print(ex);
}
return toReturn;
}
@Override
public void print(Object o) {
print(String.valueOf(o));
}
@Override
public void println() {
print("\n");
}
@Override
public void println(Object o) {
print(String.format("%s\n", o));
}
@Override
public void printStackTrace(Throwable t) {
print(Lib.exceptionToString(t));
}
@SuppressWarnings("rawtypes")
@Override
public void printDictionary(Dictionary dic, String title) {
print(String.format("%s:[%s]", title, dic));
}
@Override
public void printBundleResource(Bundle bundle, String resource) {
print(String.format("[%s:%s]", bundle, resource));
}
private void print(String message) {
try {
writer.append(message);
} catch (Exception ex) {
// Do Nothing
}
}
}
}
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