93 lines
3.6 KiB
Java
93 lines
3.6 KiB
Java
// Copyright (C) 2013 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.lucene;
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import com.google.common.flogger.FluentLogger;
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import com.google.common.primitives.Ints;
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import com.google.gerrit.extensions.registration.DynamicSet;
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import com.google.gerrit.index.Index;
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import com.google.gerrit.index.IndexDefinition;
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import com.google.gerrit.index.Schema;
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import com.google.gerrit.server.config.GerritServerConfig;
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import com.google.gerrit.server.config.SitePaths;
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import com.google.gerrit.server.index.GerritIndexStatus;
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import com.google.gerrit.server.index.OnlineUpgradeListener;
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import com.google.gerrit.server.index.VersionManager;
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import com.google.inject.Inject;
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import com.google.inject.Singleton;
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import java.io.IOException;
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import java.nio.file.DirectoryStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Collection;
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import java.util.TreeMap;
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import org.eclipse.jgit.lib.Config;
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@Singleton
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public class LuceneVersionManager extends VersionManager {
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private static final FluentLogger logger = FluentLogger.forEnclosingClass();
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static Path getDir(SitePaths sitePaths, String name, Schema<?> schema) {
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return sitePaths.index_dir.resolve(String.format("%s_%04d", name, schema.getVersion()));
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}
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@Inject
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LuceneVersionManager(
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@GerritServerConfig Config cfg,
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SitePaths sitePaths,
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DynamicSet<OnlineUpgradeListener> listeners,
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Collection<IndexDefinition<?, ?, ?>> defs) {
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super(sitePaths, listeners, defs, VersionManager.getOnlineUpgrade(cfg));
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}
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@Override
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protected <K, V, I extends Index<K, V>> TreeMap<Integer, VersionManager.Version<V>> scanVersions(
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IndexDefinition<K, V, I> def, GerritIndexStatus cfg) {
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TreeMap<Integer, VersionManager.Version<V>> versions = new TreeMap<>();
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for (Schema<V> schema : def.getSchemas().values()) {
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// This part is Lucene-specific.
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Path p = getDir(sitePaths, def.getName(), schema);
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boolean isDir = Files.isDirectory(p);
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if (Files.exists(p) && !isDir) {
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logger.atWarning().log("Not a directory: %s", p.toAbsolutePath());
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}
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int v = schema.getVersion();
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versions.put(v, new Version<>(schema, v, isDir, cfg.getReady(def.getName(), v)));
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}
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String prefix = def.getName() + "_";
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try (DirectoryStream<Path> paths = Files.newDirectoryStream(sitePaths.index_dir)) {
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for (Path p : paths) {
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String n = p.getFileName().toString();
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if (!n.startsWith(prefix)) {
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continue;
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}
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String versionStr = n.substring(prefix.length());
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Integer v = Ints.tryParse(versionStr);
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if (v == null || versionStr.length() != 4) {
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logger.atWarning().log("Unrecognized version in index directory: %s", p.toAbsolutePath());
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continue;
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}
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if (!versions.containsKey(v)) {
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versions.put(v, new Version<V>(null, v, true, cfg.getReady(def.getName(), v)));
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}
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}
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} catch (IOException e) {
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logger.atSevere().withCause(e).log("Error scanning index directory: %s", sitePaths.index_dir);
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}
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return versions;
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}
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}
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