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RocksDbTableProvider.java
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RocksDbTableProvider.java
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/*
* 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.samza.storage.kv;
import java.util.HashMap;
import java.util.Map;
import org.apache.samza.config.ClusterManagerConfig;
import org.apache.samza.config.JavaTableConfig;
import org.apache.samza.config.StorageConfig;
import org.apache.samza.table.TableSpec;
/**
* Table provider for tables backed by RocksDb.
*/
public class RocksDbTableProvider extends BaseLocalStoreBackedTableProvider {
public RocksDbTableProvider(TableSpec tableSpec) {
super(tableSpec);
}
@Override
public Map<String, String> generateConfig(Map<String, String> config) {
Map<String, String> tableConfig = new HashMap<>();
// Store factory configuration
tableConfig.put(String.format(
StorageConfig.FACTORY(), tableSpec.getId()),
RocksDbKeyValueStorageEngineFactory.class.getName());
// Common store configuration
tableConfig.putAll(generateCommonStoreConfig(config));
// Rest of the configuration
tableSpec.getConfig().forEach((k, v) -> {
String realKey = k.startsWith("rocksdb.") ?
String.format("stores.%s", tableSpec.getId()) + "." + k.substring("rocksdb.".length())
: String.format(JavaTableConfig.TABLE_ID_PREFIX, tableSpec.getId()) + "." + k;
tableConfig.put(realKey, v);
});
// Enable host affinity
tableConfig.put(ClusterManagerConfig.CLUSTER_MANAGER_HOST_AFFINITY_ENABLED, "true");
logger.info("Generated configuration for table " + tableSpec.getId());
return tableConfig;
}
}