| /* |
| * 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.hbase; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.drill.common.JSONOptions; |
| import org.apache.drill.exec.ops.OptimizerRulesContext; |
| import org.apache.drill.exec.planner.PlannerPhase; |
| import org.apache.drill.exec.server.DrillbitContext; |
| import org.apache.drill.exec.store.AbstractStoragePlugin; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.store.StoragePluginOptimizerRule; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.client.Connection; |
| |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.drill.shaded.guava.com.google.common.collect.ImmutableSet; |
| |
| public class HBaseStoragePlugin extends AbstractStoragePlugin { |
| private static final HBaseConnectionManager hbaseConnectionManager = HBaseConnectionManager.INSTANCE; |
| |
| private final HBaseStoragePluginConfig storeConfig; |
| private final HBaseSchemaFactory schemaFactory; |
| private final HBaseConnectionKey connectionKey; |
| |
| private final String name; |
| |
| public HBaseStoragePlugin(HBaseStoragePluginConfig storeConfig, DrillbitContext context, String name) |
| throws IOException { |
| super(context, name); |
| this.schemaFactory = new HBaseSchemaFactory(this, name); |
| this.storeConfig = storeConfig; |
| this.name = name; |
| this.connectionKey = new HBaseConnectionKey(); |
| } |
| |
| @Override |
| public boolean supportsRead() { |
| return true; |
| } |
| |
| @Override |
| public HBaseGroupScan getPhysicalScan(String userName, JSONOptions selection) throws IOException { |
| HBaseScanSpec scanSpec = selection.getListWith(new ObjectMapper(), new TypeReference<HBaseScanSpec>() {}); |
| return new HBaseGroupScan(userName, this, scanSpec, null); |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) throws IOException { |
| schemaFactory.registerSchemas(schemaConfig, parent); |
| } |
| |
| @Override |
| public HBaseStoragePluginConfig getConfig() { |
| return storeConfig; |
| } |
| |
| @Override |
| public Set<StoragePluginOptimizerRule> getOptimizerRules( |
| OptimizerRulesContext optimizerRulesContext, |
| PlannerPhase phase |
| ) { |
| switch (phase) { |
| case PHYSICAL: |
| return ImmutableSet.of( |
| HBasePushFilterIntoScan.FILTER_ON_SCAN, |
| HBasePushFilterIntoScan.FILTER_ON_PROJECT |
| ); |
| default: |
| return ImmutableSet.of(); |
| } |
| } |
| |
| @Override |
| public void close() throws Exception { |
| hbaseConnectionManager.closeConnection(connectionKey); |
| } |
| |
| public Connection getConnection() { |
| return hbaseConnectionManager.getConnection(connectionKey); |
| } |
| |
| /** |
| * An internal class which serves the key in a map of {@link HBaseStoragePlugin} => {@link Connection}. |
| */ |
| class HBaseConnectionKey { |
| |
| private final ReentrantLock lock = new ReentrantLock(); |
| |
| private HBaseConnectionKey() {} |
| |
| public void lock() { |
| lock.lock(); |
| } |
| |
| public void unlock() { |
| lock.unlock(); |
| } |
| |
| public Configuration getHBaseConf() { |
| return storeConfig.getHBaseConf(); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((name == null) ? 0 : name.hashCode()); |
| result = prime * result + ((storeConfig == null) ? 0 : storeConfig.hashCode()); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } else if (obj == null) { |
| return false; |
| } else if (getClass() != obj.getClass()) { |
| return false; |
| } |
| |
| HBaseStoragePlugin other = ((HBaseConnectionKey) obj).getHBaseStoragePlugin(); |
| if (name == null) { |
| if (other.name != null) { |
| return false; |
| } |
| } else if (!name.equals(other.name)) { |
| return false; |
| } |
| if (storeConfig == null) { |
| if (other.storeConfig != null) { |
| return false; |
| } |
| } else if (!storeConfig.equals(other.storeConfig)) { |
| return false; |
| } |
| return true; |
| } |
| |
| private HBaseStoragePlugin getHBaseStoragePlugin() { |
| return HBaseStoragePlugin.this; |
| } |
| } |
| } |