/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2016 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.exist.repo;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.*;
import java.util.stream.Collectors;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.exist.storage.DBBroker;
import org.exist.storage.StartupTrigger;
import org.exist.util.FileUtils;
import org.expath.pkg.repo.*;
/**
* Startup trigger for automatic deployment of application packages. Scans the "autodeploy" directory
* for .xar files. Installs any application which does not yet exist in the database.
*/
public class AutoDeploymentTrigger implements StartupTrigger {
private final static Logger LOG = LogManager.getLogger(AutoDeploymentTrigger.class);
public final static String AUTODEPLOY_DIRECTORY = "autodeploy";
public final static String AUTODEPLOY_PROPERTY = "exist.autodeploy";
@Override
public void execute(final DBBroker sysBroker, final Map<String, List<? extends Object>> params) {
// do not process if the system property exist.autodeploy=off
final String property = System.getProperty(AUTODEPLOY_PROPERTY, "on");
if (property.equalsIgnoreCase("off")) {
return;
}
final Optional<Path> homeDir = sysBroker.getConfiguration().getExistHome();
final Path autodeployDir = FileUtils.resolve(homeDir, AUTODEPLOY_DIRECTORY);
if (!Files.isReadable(autodeployDir) && Files.isDirectory(autodeployDir)) {
return;
}
try {
final List<Path> xars = Files
.find(autodeployDir, 1, (path, attrs) -> (!attrs.isDirectory()) && FileUtils.fileName(path).endsWith(".xar"))
.sorted(Comparator.comparing(Path::getFileName))
.collect(Collectors.toList());
LOG.info("Scanning autodeploy directory. Found " + xars.size() + " app packages.");
final Deployment deployment = new Deployment(sysBroker);
// build a map with uri -> file so we can resolve dependencies
final Map<String, Path> packages = new HashMap<>();
for (final Path xar : xars) {
try {
final Optional<String> name = deployment.getNameFromDescriptor(xar);
if(name.isPresent()) {
packages.put(name.get(), xar);
} else {
LOG.warn("No descriptor name for: " + xar.toAbsolutePath().toString());
}
} catch (final IOException | PackageException e) {
LOG.warn("Caught exception while reading app package " + xar.toAbsolutePath().toString(), e);
}
}
final PackageLoader loader = (name, version) -> {
// TODO: enforce version check
return packages.get(name);
};
for (final Path xar : xars) {
try {
deployment.installAndDeploy(xar, loader, false);
} catch (final PackageException | IOException e) {
LOG.warn("Exception during deployment of app " + FileUtils.fileName(xar) + ": " + e.getMessage(), e);
sysBroker.getBrokerPool().reportStatus("An error occurred during app deployment: " + e.getMessage());
}
}
} catch(final IOException ioe) {
LOG.error(ioe);
}
}
}