| /* |
| * 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.drill.exec.store.sys; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import com.typesafe.config.ConfigException; |
| import org.apache.drill.common.config.DrillConfig; |
| import org.apache.drill.common.exceptions.ExecutionSetupException; |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.exec.coord.ClusterCoordinator; |
| import org.apache.drill.exec.store.sys.store.provider.CachingPersistentStoreProvider; |
| |
| public class PersistentStoreRegistry<C extends ClusterCoordinator> { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(PersistentStoreRegistry.class); |
| |
| private final DrillConfig config; |
| private final C coordinator; |
| |
| public PersistentStoreRegistry(C coordinator, DrillConfig config) { |
| this.coordinator = Preconditions.checkNotNull(coordinator, "coordinator cannot be null"); |
| this.config = Preconditions.checkNotNull(config, "config cannot be null"); |
| } |
| |
| public C getCoordinator() { |
| return this.coordinator; |
| } |
| |
| public DrillConfig getConfig() { |
| return this.config; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public PersistentStoreProvider newPStoreProvider() throws ExecutionSetupException { |
| try { |
| String storeProviderClassName = config.getString(ExecConstants.SYS_STORE_PROVIDER_CLASS); |
| logger.info("Using the configured PStoreProvider class: '{}'.", storeProviderClassName); |
| Class<? extends PersistentStoreProvider> storeProviderClass = (Class<? extends PersistentStoreProvider>) Class.forName(storeProviderClassName); |
| Constructor<? extends PersistentStoreProvider> c = storeProviderClass.getConstructor(PersistentStoreRegistry.class); |
| return new CachingPersistentStoreProvider(c.newInstance(this)); |
| } catch (ConfigException.Missing | ClassNotFoundException | NoSuchMethodException | SecurityException |
| | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) { |
| logger.error(e.getMessage(), e); |
| throw new ExecutionSetupException("A System Table provider was either not specified or could not be found or instantiated", e); |
| } |
| } |
| |
| } |