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// Copyright (C) 2017 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.google.gerrit.elasticsearch;
import com.google.common.primitives.Ints;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.index.Index;
import com.google.gerrit.index.IndexDefinition;
import com.google.gerrit.index.Schema;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.index.GerritIndexStatus;
import com.google.gerrit.server.index.OnlineUpgradeListener;
import com.google.gerrit.server.index.VersionManager;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.TreeMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Singleton
public class ElasticIndexVersionManager extends VersionManager {
private static final Logger log = LoggerFactory.getLogger(ElasticIndexVersionManager.class);
private final String prefix;
private final ElasticIndexVersionDiscovery versionDiscovery;
@Inject
ElasticIndexVersionManager(
ElasticConfiguration cfg,
SitePaths sitePaths,
DynamicSet<OnlineUpgradeListener> listeners,
Collection<IndexDefinition<?, ?, ?>> defs,
ElasticIndexVersionDiscovery versionDiscovery) {
super(sitePaths, listeners, defs, VersionManager.getOnlineUpgrade(cfg.getConfig()));
this.versionDiscovery = versionDiscovery;
prefix = cfg.prefix;
}
@Override
protected <K, V, I extends Index<K, V>> TreeMap<Integer, Version<V>> scanVersions(
IndexDefinition<K, V, I> def, GerritIndexStatus cfg) {
TreeMap<Integer, Version<V>> versions = new TreeMap<>();
try {
List<String> discovered = versionDiscovery.discover(prefix, def.getName());
log.debug("Discovered versions for {}: {}", def.getName(), discovered);
for (String version : discovered) {
Integer v = Ints.tryParse(version);
if (v == null || version.length() != 4) {
log.warn("Unrecognized version in index {}: {}", def.getName(), version);
continue;
}
versions.put(v, new Version<>(null, v, true, cfg.getReady(def.getName(), v)));
}
} catch (IOException e) {
log.error("Error scanning index: " + def.getName(), e);
}
for (Schema<V> schema : def.getSchemas().values()) {
int v = schema.getVersion();
boolean exists = versions.containsKey(v);
versions.put(v, new Version<>(schema, v, exists, cfg.getReady(def.getName(), v)));
}
return versions;
}
}
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