/*
* 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.karaf.shell.compat;
import java.util.List;
import org.apache.felix.service.command.CommandProcessor;
import org.apache.felix.service.command.CommandSession;
import org.apache.karaf.shell.commands.Command;
import org.apache.karaf.shell.commands.CommandWithAction;
import org.apache.karaf.shell.api.console.CommandLine;
import org.apache.karaf.shell.api.console.Completer;
import org.apache.karaf.shell.api.console.Session;
import org.apache.karaf.shell.api.console.SessionFactory;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.framework.ServiceReference;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
public class CommandTracker implements ServiceTrackerCustomizer<Object, Object> {
SessionFactory sessionFactory;
BundleContext context;
ServiceTracker<?, ?> tracker;
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public void setContext(BundleContext context) {
this.context = context;
}
public void init() throws Exception {
Filter filter = context.createFilter(String.format("(&(%s=*)(%s=*))",
CommandProcessor.COMMAND_SCOPE, CommandProcessor.COMMAND_FUNCTION));
this.tracker = new ServiceTracker<Object, Object>(context, filter, this);
this.tracker.open();
}
public void destroy() {
tracker.close();
}
@Override
public Object addingService(final ServiceReference reference) {
Object service = context.getService(reference);
if (service instanceof CommandWithAction) {
final CommandWithAction oldCommand = (CommandWithAction) service;
final org.apache.karaf.shell.api.console.Command command = new org.apache.karaf.shell.api.console.Command() {
@Override
public String getScope() {
return reference.getProperty(CommandProcessor.COMMAND_SCOPE).toString();
}
@Override
public String getName() {
return reference.getProperty(CommandProcessor.COMMAND_FUNCTION).toString();
}
@Override
public String getDescription() {
final Command cmd = oldCommand.getActionClass().getAnnotation(Command.class);
if (cmd != null) {
return cmd.description();
} else {
return getName();
}
}
@Override
public Completer getCompleter(final boolean scoped) {
final ArgumentCompleter completer = new ArgumentCompleter(oldCommand, getScope(), getName(), scoped);
return new Completer() {
@Override
public int complete(Session session, CommandLine commandLine, List<String> candidates) {
return completer.complete(session, commandLine, candidates);
}
};
}
@Override
public Object execute(Session session, List<Object> arguments) throws Exception {
// TODO: remove not really nice cast
CommandSession commandSession = (CommandSession) session.get(".commandSession");
return oldCommand.execute(commandSession, arguments);
}
};
sessionFactory.getRegistry().register(command);
return command;
} else if (service instanceof org.apache.felix.gogo.commands.CommandWithAction) {
final org.apache.felix.gogo.commands.CommandWithAction oldCommand = (org.apache.felix.gogo.commands.CommandWithAction) service;
final org.apache.karaf.shell.api.console.Command command = new org.apache.karaf.shell.api.console.Command() {
@Override
public String getScope() {
return reference.getProperty(CommandProcessor.COMMAND_SCOPE).toString();
}
@Override
public String getName() {
return reference.getProperty(CommandProcessor.COMMAND_FUNCTION).toString();
}
@Override
public String getDescription() {
final org.apache.felix.gogo.commands.Command cmd = oldCommand.getActionClass().getAnnotation(org.apache.felix.gogo.commands.Command.class);
if (cmd != null) {
return cmd.description();
} else {
return getName();
}
}
@Override
public Completer getCompleter(final boolean scoped) {
final OldArgumentCompleter completer = new OldArgumentCompleter(oldCommand, getScope(), getName(), scoped);
return new Completer() {
@Override
public int complete(Session session, CommandLine commandLine, List<String> candidates) {
return completer.complete(session, commandLine, candidates);
}
};
}
@Override
public Object execute(Session session, List<Object> arguments) throws Exception {
// TODO: remove not really nice cast
CommandSession commandSession = (CommandSession) session.get(".commandSession");
return oldCommand.execute(commandSession, arguments);
}
};
sessionFactory.getRegistry().register(command);
return command;
}
return service;
}
@Override
public void modifiedService(ServiceReference reference, Object service) {
}
@Override
public void removedService(ServiceReference reference, Object service) {
if (service instanceof org.apache.karaf.shell.api.console.Command) {
sessionFactory.getRegistry().unregister(service);
}
context.ungetService(reference);
}
}