/**
* Copyright 2005-2014 Red Hat, Inc.
*
* Red Hat 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 io.fabric8.commands;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import io.fabric8.api.FabricService;
import io.fabric8.api.scr.ValidatingReference;
import io.fabric8.boot.commands.support.AbstractCommandComponent;
import io.fabric8.boot.commands.support.ContainerCompleter;
import io.fabric8.boot.commands.support.VersionCompleter;
import org.apache.felix.gogo.commands.Action;
import org.apache.felix.gogo.commands.basic.AbstractCommand;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;
import org.apache.felix.service.command.Function;
import org.apache.karaf.shell.console.Completer;
import org.apache.karaf.shell.console.completer.NullCompleter;
@Component(immediate = true)
@Service({ Function.class, AbstractCommand.class })
@org.apache.felix.scr.annotations.Properties({
@Property(name = "osgi.command.scope", value = ContainerUpgrade.SCOPE_VALUE),
@Property(name = "osgi.command.function", value = ContainerUpgrade.FUNCTION_VALUE)
})
public class ContainerUpgrade extends AbstractCommandComponent {
public static final String SCOPE_VALUE = "fabric";
public static final String FUNCTION_VALUE = "container-upgrade";
public static final String DESCRIPTION = "Upgrade containers to a new version";
@Reference(referenceInterface = FabricService.class)
private final ValidatingReference<FabricService> fabricService = new ValidatingReference<FabricService>();
// Completers
@Reference(referenceInterface = ContainerCompleter.class, bind = "bindContainerCompleter", unbind = "unbindContainerCompleter")
private ContainerCompleter containerCompleter;
@Reference(referenceInterface = VersionCompleter.class, bind = "bindVersionCompleter", unbind = "unbindVersionCompleter", cardinality = ReferenceCardinality.OPTIONAL_UNARY, policy = ReferencePolicy.DYNAMIC)
private VersionCompleter versionCompleter;
private final List<Completer> completers = new ArrayList<Completer>();
@Activate
void activate() {
activateComponent();
}
@Deactivate
void deactivate() {
deactivateComponent();
}
@Override
public Action createNewAction() {
assertValid();
return new ContainerUpgradeAction(fabricService.get());
}
void bindFabricService(FabricService fabricService) {
this.fabricService.bind(fabricService);
}
void unbindFabricService(FabricService fabricService) {
this.fabricService.unbind(fabricService);
}
void bindContainerCompleter(ContainerCompleter completer) {
synchronized (completers) {
// container last (2nd)
completers.add(completer);
}
}
void unbindContainerCompleter(ContainerCompleter completer) {
completers.remove(completer);
}
void bindVersionCompleter(VersionCompleter completer) {
synchronized (completers) {
// version first
completers.add(0, completer);
}
}
void unbindVersionCompleter(VersionCompleter completer) {
completers.remove(completer);
}
@Override
public List<Completer> getCompleters() {
synchronized (completers) {
if (completers.isEmpty()) {
return Arrays.<Completer>asList(new NullCompleter());
}
return Collections.unmodifiableList(completers);
}
}
}