/*
* 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.impl.console.osgi;
import org.apache.felix.gogo.runtime.CommandProxy;
import org.apache.felix.service.command.CommandProcessor;
import org.apache.felix.service.command.CommandSession;
import org.apache.felix.service.command.Function;
import org.apache.karaf.shell.api.console.*;
import org.osgi.framework.*;
import org.osgi.util.tracker.ServiceTracker;
import java.util.ArrayList;
import java.util.List;
public class CommandTracker extends ServiceTracker<Object, List<Command>> {
final SessionFactory sessionFactory;
public CommandTracker(SessionFactory sessionFactory, BundleContext context) throws InvalidSyntaxException{
super(context, createFilter(context), null);
this.sessionFactory = sessionFactory;
}
static private Filter createFilter(BundleContext context) throws InvalidSyntaxException {
return context.createFilter(String.format("(&(%s=*)(%s=*)(!(%s=%s))(!(%s=%s)))",
CommandProcessor.COMMAND_SCOPE,
CommandProcessor.COMMAND_FUNCTION,
Constants.OBJECTCLASS,
"org.apache.felix.gogo.commands.CommandWithAction",
Constants.OBJECTCLASS,
"org.apache.karaf.shell.commands.CommandWithAction"));
}
@Override
public List<Command> addingService(final ServiceReference<Object> reference) {
final String scope = reference.getProperty(CommandProcessor.COMMAND_SCOPE).toString();
final Object function = reference.getProperty(CommandProcessor.COMMAND_FUNCTION);
final List<String> names = new ArrayList<>();
if (function.getClass().isArray()) {
for (final Object f : ((Object[]) function)) {
names.add(f.toString());
}
} else {
names.add(function.toString());
}
List<Command> commands = new ArrayList<>();
for (String name : names) {
final Function target = new CommandProxy(context, reference, name);
Command command = new Command() {
@Override
public String getScope() {
return scope;
}
@Override
public String getName() {
return name;
}
@Override
public String getDescription() {
Object property = reference.getProperty("osgi.command.description");
if (property != null) {
return property.toString();
} else {
return getName();
}
}
@Override
public Completer getCompleter(final boolean scoped) {
return null;
}
@Override
public Parser getParser() {
return null;
}
@Override
public Object execute(Session session, List<Object> arguments) throws Exception {
// TODO: remove not really nice cast
CommandSession commandSession = (CommandSession) session.get(".commandSession");
return target.execute(commandSession, arguments);
}
};
sessionFactory.getRegistry().register(command);
commands.add(command);
}
return commands;
}
@Override
public void removedService(ServiceReference<Object> reference, List<Command> commands) {
for (Command command : commands) {
sessionFactory.getRegistry().unregister(command);
}
}
}