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// Copyright (C) 2012 The Android Open Source Project
//
// 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 com.google.gerrit.pgm.init;
import static java.util.Comparator.comparing;
import com.google.gerrit.common.PluginData;
import com.google.gerrit.pgm.init.api.ConsoleUI;
import com.google.gerrit.pgm.init.api.InitFlags;
import com.google.gerrit.pgm.init.api.InitStep;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.plugins.JarPluginProvider;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Singleton;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
@Singleton
public class InitPlugins implements InitStep {
public static final String PLUGIN_DIR = "WEB-INF/plugins/";
public static final String JAR = ".jar";
public static List<PluginData> listPlugins(
SitePaths site, PluginsDistribution pluginsDistribution) throws IOException {
return listPlugins(site, false, pluginsDistribution);
}
public static List<PluginData> listPluginsAndRemoveTempFiles(
SitePaths site, PluginsDistribution pluginsDistribution) throws IOException {
return listPlugins(site, true, pluginsDistribution);
}
private static List<PluginData> listPlugins(
final SitePaths site,
final boolean deleteTempPluginFile,
PluginsDistribution pluginsDistribution)
throws IOException {
final List<PluginData> result = new ArrayList<>();
pluginsDistribution.foreach(
(pluginName, in) -> {
Path tmpPlugin = JarPluginProvider.storeInTemp(pluginName, in, site);
String pluginVersion = getVersion(tmpPlugin);
if (deleteTempPluginFile) {
Files.delete(tmpPlugin);
}
result.add(new PluginData(pluginName, pluginVersion, tmpPlugin));
});
result.sort(comparing(p -> p.name));
return result;
}
private final ConsoleUI ui;
private final SitePaths site;
private final InitFlags initFlags;
private final InitPluginStepsLoader pluginLoader;
private final PluginsDistribution pluginsDistribution;
private Injector postRunInjector;
@Inject
InitPlugins(
final ConsoleUI ui,
final SitePaths site,
InitFlags initFlags,
InitPluginStepsLoader pluginLoader,
PluginsDistribution pluginsDistribution) {
this.ui = ui;
this.site = site;
this.initFlags = initFlags;
this.pluginLoader = pluginLoader;
this.pluginsDistribution = pluginsDistribution;
}
@Override
public void run() throws Exception {
ui.header("Plugins");
installPlugins();
initPlugins();
}
@Override
public void postRun() throws Exception {
postInitPlugins();
}
@Inject(optional = true)
void setPostRunInjector(Injector injector) {
postRunInjector = injector;
}
private void installPlugins() throws IOException {
ui.message("Installing plugins.\n");
List<PluginData> plugins = listPlugins(site, pluginsDistribution);
for (PluginData plugin : plugins) {
String pluginName = plugin.name;
try {
final Path tmpPlugin = plugin.pluginPath;
Path p = site.plugins_dir.resolve(plugin.name + ".jar");
boolean upgrade = Files.exists(p);
if (!(initFlags.installPlugins.contains(pluginName)
|| initFlags.installAllPlugins
|| ui.yesno(upgrade, "Install plugin %s version %s", pluginName, plugin.version))) {
Files.deleteIfExists(tmpPlugin);
continue;
}
if (upgrade) {
final String installedPluginVersion = getVersion(p);
if (!ui.yesno(
upgrade,
"%s %s is already installed, overwrite it",
plugin.name,
installedPluginVersion)) {
Files.deleteIfExists(tmpPlugin);
continue;
}
try {
Files.delete(p);
} catch (IOException e) {
throw new IOException(
"Failed to delete plugin " + pluginName + ": " + p.toAbsolutePath(), e);
}
}
try {
Files.move(tmpPlugin, p);
if (upgrade) {
// or update that is not an upgrade
ui.message("Updated %s to %s\n", plugin.name, plugin.version);
} else {
ui.message("Installed %s %s\n", plugin.name, plugin.version);
}
} catch (IOException e) {
throw new IOException(
"Failed to install plugin "
+ pluginName
+ ": "
+ tmpPlugin.toAbsolutePath()
+ " -> "
+ p.toAbsolutePath(),
e);
}
} finally {
Files.deleteIfExists(plugin.pluginPath);
}
}
if (plugins.isEmpty()) {
ui.message("No plugins found to install.\n");
}
}
private void initPlugins() throws Exception {
ui.message("Initializing plugins.\n");
Collection<InitStep> initSteps = pluginLoader.getInitSteps();
if (initSteps.isEmpty()) {
ui.message("No plugins found with init steps.\n");
} else {
for (InitStep initStep : initSteps) {
initStep.run();
}
}
}
private void postInitPlugins() throws Exception {
for (InitStep initStep : pluginLoader.getInitSteps()) {
postRunInjector.injectMembers(initStep);
initStep.postRun();
}
}
private static String getVersion(Path plugin) throws IOException {
try (JarFile jarFile = new JarFile(plugin.toFile())) {
Manifest manifest = jarFile.getManifest();
Attributes main = manifest.getMainAttributes();
return main.getValue(Attributes.Name.IMPLEMENTATION_VERSION);
}
}
}
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