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Apache Solr (module: core)
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.solr.core.backup.repository;
import static org.apache.solr.core.backup.repository.DelegatingBackupRepository.PARAM_DELEGATE_REPOSITORY_NAME;
import java.lang.invoke.MethodHandles;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrException.ErrorCode;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.core.PluginInfo;
import org.apache.solr.core.SolrResourceLoader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class BackupRepositoryFactory {
private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private final Map backupRepoPluginByName = new HashMap<>();
private PluginInfo defaultBackupRepoPlugin = null;
public BackupRepositoryFactory(PluginInfo[] backupRepoPlugins) {
if (backupRepoPlugins != null) {
for (int i = 0; i < backupRepoPlugins.length; i++) {
String name = backupRepoPlugins[i].name;
boolean isDefault = backupRepoPlugins[i].isDefault();
if (backupRepoPluginByName.containsKey(name)) {
throw new SolrException(
ErrorCode.SERVER_ERROR, "Duplicate backup repository with name " + name);
}
if (isDefault) {
if (this.defaultBackupRepoPlugin != null) {
throw new SolrException(
ErrorCode.SERVER_ERROR, "More than one backup repository is configured as default");
}
this.defaultBackupRepoPlugin = backupRepoPlugins[i];
}
backupRepoPluginByName.put(name, backupRepoPlugins[i]);
log.info("Added backup repository with configuration params {}", backupRepoPlugins[i]);
}
if (backupRepoPlugins.length == 1) {
this.defaultBackupRepoPlugin = backupRepoPlugins[0];
}
if (this.defaultBackupRepoPlugin != null) {
log.info(
"Default configuration for backup repository is with configuration params {}",
defaultBackupRepoPlugin);
}
}
}
public BackupRepository newInstance(SolrResourceLoader loader, String name) {
Objects.requireNonNull(loader);
Objects.requireNonNull(name);
PluginInfo repo = getBackupRepoPlugin(name);
BackupRepository backupRepository = loader.newInstance(repo.className, BackupRepository.class);
backupRepository.init(repo.initArgs);
if (backupRepository instanceof DelegatingBackupRepository) {
DelegatingBackupRepository delegatingRepo = (DelegatingBackupRepository) backupRepository;
String delegateName = (String) repo.initArgs.get(PARAM_DELEGATE_REPOSITORY_NAME);
if (delegateName == null) {
throw new SolrException(
ErrorCode.SERVER_ERROR,
"Missing '"
+ PARAM_DELEGATE_REPOSITORY_NAME
+ "' parameter for backup repository with name "
+ name);
}
PluginInfo delegatePlugin = getBackupRepoPlugin(delegateName);
BackupRepository delegate =
loader.newInstance(delegatePlugin.className, BackupRepository.class);
delegate.init(delegatingRepo.getDelegateInitArgs(delegatePlugin.initArgs));
delegatingRepo.setDelegate(delegate);
}
return backupRepository;
}
private PluginInfo getBackupRepoPlugin(String name) {
return Objects.requireNonNull(
backupRepoPluginByName.get(name), "Could not find a backup repository with name " + name);
}
public BackupRepository newInstance(SolrResourceLoader loader) {
if (defaultBackupRepoPlugin != null) {
return newInstance(loader, defaultBackupRepoPlugin.name);
}
LocalFileSystemRepository repo = new LocalFileSystemRepository();
repo.init(new NamedList<>());
return repo;
}
}