83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
// Copyright (C) 2012 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.sshd;
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import com.google.gerrit.extensions.registration.DynamicMap;
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import com.google.gerrit.server.DynamicOptions;
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import com.google.gerrit.server.plugins.Plugin;
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import com.google.gerrit.server.plugins.ReloadPluginListener;
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import com.google.gerrit.server.plugins.StartPluginListener;
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import com.google.inject.Inject;
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import com.google.inject.Key;
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import com.google.inject.Provider;
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import com.google.inject.Singleton;
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import org.apache.sshd.server.Command;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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@Singleton
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class SshPluginStarterCallback implements StartPluginListener, ReloadPluginListener {
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private static final Logger log = LoggerFactory.getLogger(SshPluginStarterCallback.class);
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private final DispatchCommandProvider root;
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private final DynamicMap<DynamicOptions.DynamicBean> dynamicBeans;
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@Inject
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SshPluginStarterCallback(
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@CommandName(Commands.ROOT) DispatchCommandProvider root,
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DynamicMap<DynamicOptions.DynamicBean> dynamicBeans) {
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this.root = root;
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this.dynamicBeans = dynamicBeans;
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}
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@Override
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public void onStartPlugin(Plugin plugin) {
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Provider<Command> cmd = load(plugin);
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if (cmd != null) {
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plugin.add(root.register(Commands.named(plugin.getName()), cmd));
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}
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}
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@Override
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public void onReloadPlugin(Plugin oldPlugin, Plugin newPlugin) {
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Provider<Command> cmd = load(newPlugin);
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if (cmd != null) {
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newPlugin.add(root.replace(Commands.named(newPlugin.getName()), cmd));
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}
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}
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private Provider<Command> load(Plugin plugin) {
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if (plugin.getSshInjector() != null) {
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Key<Command> key = Commands.key(plugin.getName());
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try {
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return plugin.getSshInjector().getProvider(key);
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} catch (RuntimeException err) {
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if (!providesDynamicOptions(plugin)) {
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log.warn(
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String.format(
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"Plugin %s did not define its top-level command nor any DynamicOptions",
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plugin.getName()),
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err);
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}
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}
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}
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return null;
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}
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private boolean providesDynamicOptions(Plugin plugin) {
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return dynamicBeans.plugins().contains(plugin.getName());
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}
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}
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