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This bundle is the core implementation of the Karaf features support.
/*
* 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.features.internal.service;
import java.net.URI;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Deque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.karaf.features.Repository;
import org.apache.karaf.features.internal.model.Features;
/**
* Implementation of {@link RepositoryCache} that makes use of {@link FeaturesProcessor} to alter feature
* definitions after reading them from XML file.
*/
public class RepositoryCacheImpl implements RepositoryCache {
private final Map repositoryCache = new HashMap<>();
private final FeaturesProcessor featuresProcessor;
public RepositoryCacheImpl(FeaturesProcessor featuresProcessor) {
this.featuresProcessor = featuresProcessor;
}
@Override
public Repository create(URI uri, boolean validate) {
if (featuresProcessor != null && featuresProcessor.isRepositoryBlacklisted(uri.toString())) {
return new RepositoryImpl(uri, new Features(), true);
}
RepositoryImpl repository = new RepositoryImpl(uri, validate);
if (featuresProcessor != null) {
// maybe it could be done better - first we have to set if entire repo is blacklisted
repository.setBlacklisted(featuresProcessor.isRepositoryBlacklisted(uri.toString()));
// processing features will take the above flag into account to blacklist (if needed) the features
repository.processFeatures(featuresProcessor);
}
return repository;
}
@Override
public void addRepository(Repository repository) {
String repoUriSt = repository.getURI().toString();
repositoryCache.put(repoUriSt, repository);
}
@Override
public void removeRepository(URI repositoryUri) {
List toRemove = new ArrayList<>();
toRemove.add(repositoryUri.toString());
while (!toRemove.isEmpty()) {
Repository rep = repositoryCache.remove(toRemove.remove(0));
if (rep != null) {
for (URI u : rep.getRepositories()) {
toRemove.add(u.toString());
}
}
}
}
@Override
public Repository[] listRepositories() {
return repositoryCache.values().toArray(new Repository[repositoryCache.size()]);
}
@Override
public Repository[] listMatchingRepositories(Set uris) {
return repositoryCache.values().stream()
.filter(r -> uris.contains(r.getURI().toString()))
.toArray(Repository[]::new);
}
@Override
public Repository getRepositoryByName(String name) {
for (Repository repo : this.repositoryCache.values()) {
if (name.equals(repo.getName())) {
return repo;
}
}
return null;
}
@Override
public Repository getRepository(String uri) {
return repositoryCache.get(uri);
}
/**
* Returns a set containing the given repository and all its dependencies recursively
*/
@Override
public Set getRepositoryClosure(Repository repo) {
Set closure = new HashSet<>();
Deque remaining = new ArrayDeque<>(Collections.singleton(repo));
while (!remaining.isEmpty()) {
Repository rep = remaining.removeFirst();
if (closure.add(rep)) {
for (URI uri : rep.getRepositories()) {
remaining.add(getRepository(uri.toString()));
}
}
}
return closure;
}
}