b8ec7e243f
LibModules can override different part of Gerrit at startup, however they need to specify which injector they are targeting. Failing to target the correct injector would result in issues where a just-in-time binding has been already resolved and thus it is not possible anymore to override the binding. Bug: Issue 10768 Change-Id: Ifebb7fd33ad74b534a75782d096db48c387a4c03
61 lines
2.2 KiB
Java
61 lines
2.2 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, LibModuleType moduleType) {
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Config cfg = getConfig(parent);
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return Arrays.stream(cfg.getStringList("gerrit", null, "install" + moduleType.getConfigKey()))
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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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