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ContentPackageExtractor.java
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ContentPackageExtractor.java
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/*
* 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.bookkeeper;
import static java.util.Objects.requireNonNull;
import java.io.IOException;
import java.util.List;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.nodetype.NodeType;
import org.apache.jackrabbit.vault.fs.io.ImportOptions;
import org.apache.jackrabbit.vault.packaging.JcrPackage;
import org.apache.jackrabbit.vault.packaging.JcrPackageManager;
import org.apache.jackrabbit.vault.packaging.PackageException;
import org.apache.jackrabbit.vault.packaging.Packaging;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.distribution.common.DistributionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Hook that can be added to a DistributionPackageBuilder.
* Each distribution package is inspected for possible content packages in /etc/packages.
* Such content packages are installed via the Packaging service.
*/
class ContentPackageExtractor {
private static final String PACKAGE_BASE_PATH = "/etc/packages/";
private final Logger log = LoggerFactory.getLogger(this.getClass());
private final Packaging packageService;
private final PackageHandling packageHandling;
public ContentPackageExtractor(Packaging packageService, PackageHandling packageHandling) {
this.packageService = packageService;
this.packageHandling = packageHandling;
}
public void handle(ResourceResolver resourceResolver, List<String> paths) throws DistributionException {
requireNonNull(resourceResolver, "Must provide resourceResolver");
if (packageHandling == PackageHandling.Off) {
return;
}
log.debug("Scanning imported nodes for packages to install.");
for (String path : paths) {
try {
Resource resource = resourceResolver.getResource(path);
if (resource != null) {
Node node = resource.adaptTo(Node.class);
if (isContentPackage(path, node)) {
installPackage(path, node);
}
} else {
log.warn("Imported node {} does not exist. Skipping.", path);
}
} catch (Exception e) {
throw new DistributionException("Error trying to extract package at path " + path, e);
}
}
}
private boolean isContentPackage(String path, Node node) throws RepositoryException {
return path.startsWith(PACKAGE_BASE_PATH) && node.isNodeType(NodeType.NT_FILE);
}
private void installPackage(String path, Node node) throws RepositoryException, PackageException, IOException {
log.info("Content package received at {}. Starting import.\n", path);
Session session = node.getSession();
JcrPackageManager packMgr = packageService.getPackageManager(session);
try (JcrPackage pack = packMgr.open(node)) {
if (pack != null) {
installPackage(pack);
}
}
}
private void installPackage(JcrPackage pack) throws RepositoryException, PackageException, IOException {
ImportOptions opts = new ImportOptions();
if (packageHandling == PackageHandling.Extract) {
pack.extract(opts);
} else {
pack.install(opts);
}
}
}