61 lines
2.1 KiB
Java
61 lines
2.1 KiB
Java
// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.server;
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import static java.util.stream.Collectors.toList;
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import com.google.common.flogger.FluentLogger;
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import com.google.gerrit.server.config.GerritServerConfig;
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import com.google.inject.Injector;
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import com.google.inject.Key;
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import com.google.inject.Module;
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import com.google.inject.ProvisionException;
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import java.util.Arrays;
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import java.util.List;
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import org.eclipse.jgit.lib.Config;
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/** Loads configured Guice modules from {@code gerrit.installModule}. */
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public class LibModuleLoader {
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private static final FluentLogger logger = FluentLogger.forEnclosingClass();
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public static List<Module> loadModules(Injector parent) {
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Config cfg = getConfig(parent);
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return Arrays.stream(cfg.getStringList("gerrit", null, "installModule"))
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.map(m -> createModule(parent, m))
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.collect(toList());
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}
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private static Config getConfig(Injector i) {
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return i.getInstance(Key.get(Config.class, GerritServerConfig.class));
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}
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private static Module createModule(Injector injector, String className) {
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Module m = injector.getInstance(loadModule(className));
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logger.atInfo().log("Installed module %s", className);
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return m;
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}
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@SuppressWarnings("unchecked")
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private static Class<Module> loadModule(String className) {
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try {
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return (Class<Module>) Class.forName(className);
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} catch (ClassNotFoundException | LinkageError e) {
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String msg = "Cannot load LibModule " + className;
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logger.atSevere().withCause(e).log(msg);
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throw new ProvisionException(msg, e);
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}
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}
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}
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