Package org.apache.karaf.cellar.features.shell

Source Code of org.apache.karaf.cellar.features.shell.UrlRemoveCommand

/*
* Licensed 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.cellar.features.shell;

import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import org.apache.karaf.cellar.core.Configurations;
import org.apache.karaf.cellar.core.Group;
import org.apache.karaf.cellar.core.control.SwitchStatus;
import org.apache.karaf.cellar.core.event.EventProducer;
import org.apache.karaf.cellar.features.Constants;
import org.apache.karaf.cellar.features.FeatureInfo;
import org.apache.karaf.cellar.features.RemoteRepositoryEvent;
import org.apache.karaf.features.Feature;
import org.apache.karaf.features.Repository;
import org.apache.karaf.features.RepositoryEvent;

import java.net.URI;
import java.util.List;
import java.util.Map;

@Command(scope = "cluster", name = "feature-url-remove", description = "Removes the given list of repository URLs for the given cluster group")
public class UrlRemoveCommand extends FeatureCommandSupport {

    @Argument(index = 0, name = "group", description = "The cluster group name", required = true, multiValued = false)
    String groupName;

    @Argument(index = 1, name = "urls", description = "One or more repository URLs separated by whitespaces", required = true, multiValued = true)
    List<String> urls;

    private EventProducer eventProducer;

    @Override
    protected Object doExecute() throws Exception {
        // check if the group exists
        Group group = groupManager.findGroupByName(groupName);
        if (group == null) {
            System.err.println("Cluster group " + groupName + " doesn't exist");
            return null;
        }

        // check if the event producer is ON
        if (eventProducer.getSwitch().getStatus().equals(SwitchStatus.OFF)) {
            System.err.println("Cluster event producer is OFF");
            return null;
        }

        // get the distributed list
        List<String> distributedRepositories = clusterManager.getList(Constants.REPOSITORIES + Configurations.SEPARATOR + groupName);
        // get the features distributed map
        Map<FeatureInfo, Boolean> distributedFeatures = clusterManager.getMap(Constants.FEATURES + Configurations.SEPARATOR + groupName);

        for (String url : urls) {
            // looking for the URL in the list
            boolean found = false;
            for (String repository : distributedRepositories) {
                if (repository.equals(url)) {
                    found = true;
                    break;
                }
            }
            if (found) {
                // update the repository temporary locally
                Repository repository  = null;
                boolean localRegistered = false;
                // local lookup
                for (Repository registeredRepository : featuresService.listRepositories()) {
                    if (registeredRepository.getURI().equals(new URI(url))) {
                        repository = registeredRepository;
                        break;
                    }
                }
                if (repository == null) {
                    // registered locally
                    try {
                        featuresService.addRepository(new URI(url));
                    } catch (Exception e) {
                        System.err.println("Repository URL " + url + " is not valid: " + e.getMessage());
                        continue;
                    }
                    // get the repository
                    for (Repository registeredRepository : featuresService.listRepositories()) {
                        if (registeredRepository.getURI().equals(new URI(url))) {
                            repository = registeredRepository;
                            break;
                        }
                    }
                } else {
                    localRegistered = true;
                }

                // update the list
                distributedRepositories.remove(url);

                // update the distributed feature map
                for (Feature feature : repository.getFeatures()) {
                    FeatureInfo info = new FeatureInfo(feature.getName(), feature.getVersion());
                    distributedFeatures.remove(info);
                }

                // unregister the repository if it's not local registered
                if (!localRegistered)
                    featuresService.removeRepository(new URI(url));

                // broadcast a cluster event
                RemoteRepositoryEvent event = new RemoteRepositoryEvent(url, RepositoryEvent.EventType.RepositoryRemoved);
                event.setSourceGroup(group);
                eventProducer.produce(event);
            } else {
                System.err.println("Repository URL " + url + " not found");
            }
        }

        return null;
    }

    public EventProducer getEventProducer() {
        return eventProducer;
    }

    public void setEventProducer(EventProducer eventProducer) {
        this.eventProducer = eventProducer;
    }

}
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