| /* |
| * 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.sling.distribution.journal.impl.shared; |
| |
| import static java.util.Collections.singletonMap; |
| import static org.apache.sling.api.resource.ResourceResolverFactory.SUBSERVICE; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.time.Duration; |
| import java.util.List; |
| |
| import javax.annotation.Nonnull; |
| import javax.jcr.Binary; |
| import javax.jcr.RepositoryException; |
| import javax.jcr.Session; |
| import javax.jcr.ValueFactory; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.jackrabbit.commons.jackrabbit.SimpleReferenceBinary; |
| import org.apache.sling.api.resource.LoginException; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.api.resource.ResourceResolverFactory; |
| import org.apache.sling.distribution.common.DistributionException; |
| import org.apache.sling.distribution.journal.FullMessage; |
| import org.apache.sling.distribution.journal.JournalAvailable; |
| import org.apache.sling.distribution.journal.MessagingProvider; |
| import org.apache.sling.distribution.journal.impl.queue.impl.LimitPoller; |
| import org.apache.sling.distribution.journal.messages.Messages.PackageMessage; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Reference; |
| |
| @Component(service = PackageBrowser.class) |
| public class PackageBrowser { |
| |
| @Reference |
| private JournalAvailable journalAvailable; |
| |
| @Reference |
| private MessagingProvider messagingProvider; |
| |
| @Reference |
| private Topics topics; |
| |
| @Reference |
| ResourceResolverFactory resolverFactory; |
| |
| public List<FullMessage<PackageMessage>> getMessages(long startOffset, long numMessages, Duration timeout) { |
| LimitPoller poller = new LimitPoller(messagingProvider, topics.getPackageTopic(), startOffset, numMessages); |
| return poller.fetch(timeout); |
| } |
| |
| public void writeTo(PackageMessage pkgMsg, OutputStream os) throws IOException { |
| try (ResourceResolver resolver = getServiceResolver("importer")) { |
| InputStream is = pkgStream(resolver, pkgMsg); |
| IOUtils.copy(is, os); |
| } catch (LoginException | DistributionException e) { |
| throw new IOException(e.getMessage(), e); |
| } |
| } |
| |
| @Nonnull |
| public static InputStream pkgStream(ResourceResolver resolver, PackageMessage pkgMsg) throws DistributionException { |
| if (pkgMsg.hasPkgBinary()) { |
| return new ByteArrayInputStream(pkgMsg.getPkgBinary().toByteArray()); |
| } else { |
| String pkgBinRef = pkgMsg.getPkgBinaryRef(); |
| try { |
| Session session = resolver.adaptTo(Session.class); |
| if (session == null) { |
| throw new DistributionException("Unable to get Oak session"); |
| } |
| ValueFactory factory = session.getValueFactory(); |
| Binary binary = factory.createValue(new SimpleReferenceBinary(pkgBinRef)).getBinary(); |
| return binary.getStream(); |
| } catch (RepositoryException e) { |
| throw new DistributionException(e.getMessage(), e); |
| } |
| } |
| } |
| |
| private ResourceResolver getServiceResolver(String subService) throws LoginException { |
| return resolverFactory.getServiceResourceResolver(singletonMap(SUBSERVICE, subService)); |
| } |
| } |