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// Copyright (C) 2015 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.googlesource.gerrit.plugins.manager;
import com.google.common.cache.CacheLoader;
import com.google.gerrit.common.Version;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.googlesource.gerrit.plugins.manager.PluginsCentralLoader.ListKey;
import com.googlesource.gerrit.plugins.manager.repository.PluginInfo;
import com.googlesource.gerrit.plugins.manager.repository.PluginsRepository;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
@Singleton
public class PluginsCentralLoader extends
CacheLoader<ListKey, Collection<PluginInfo>> {
public static class ListKey {
static final ListKey ALL = new ListKey();
private ListKey() {}
}
private static final String GERRIT_VERSION = Version.getVersion();
private final DynamicSet<PluginsRepository> repositories;
@Inject
public PluginsCentralLoader(DynamicSet<PluginsRepository> repositories) {
this.repositories = repositories;
}
@Override
public Collection<PluginInfo> load(ListKey all) throws Exception {
Map<String, PluginInfo> pluginsMap = new HashMap<>();
Collection<PluginInfo> plugins;
for (PluginsRepository pluginsRepository : repositories) {
plugins = pluginsRepository.list(GERRIT_VERSION);
addAll(pluginsMap, plugins);
}
return pluginsMap.values();
}
private void addAll(Map<String, PluginInfo> pluginsMap,
Collection<PluginInfo> plugins) {
for (PluginInfo pluginInfo : plugins) {
PluginInfo currPlugin = pluginsMap.get(pluginInfo.name);
if (currPlugin == null
|| isLaterVersion(pluginInfo.version, currPlugin.version)) {
pluginsMap.put(pluginInfo.name, pluginInfo);
}
}
}
private boolean isLaterVersion(String newVersion, String currVersion) {
String[] vals1 = newVersion.replaceAll("-", ".").split("\\.");
String[] vals2 = currVersion.replaceAll("-", ".").split("\\.");
int i = 0;
while (i < vals1.length && i < vals2.length && vals1[i].equals(vals2[i])) {
i++;
}
if (i < vals1.length && i < vals2.length) {
return compareNumOrStrings(vals1[i], vals2[i]) > 0;
}
return vals1.length - vals2.length > 0;
}
private int compareNumOrStrings(String v1, String v2) {
try {
return Integer.parseInt(v1) - Integer.parseInt(v2);
} catch (NumberFormatException e) {
return v1.compareTo(v2);
}
}
}