| /* |
| * 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.kafka; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.drill.common.JSONOptions; |
| import org.apache.drill.exec.ops.OptimizerRulesContext; |
| import org.apache.drill.exec.physical.base.AbstractGroupScan; |
| 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.drill.exec.store.kafka.schema.KafkaSchemaFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import org.apache.drill.shaded.guava.com.google.common.collect.ImmutableSet; |
| |
| public class KafkaStoragePlugin extends AbstractStoragePlugin { |
| |
| private static final Logger logger = LoggerFactory.getLogger(KafkaStoragePlugin.class); |
| private final KafkaSchemaFactory kafkaSchemaFactory; |
| private final KafkaStoragePluginConfig config; |
| private final KafkaAsyncCloser closer; |
| |
| public KafkaStoragePlugin(KafkaStoragePluginConfig config, DrillbitContext context, String name) { |
| super(context, name); |
| logger.debug("Initializing {}", KafkaStoragePlugin.class.getName()); |
| this.config = config; |
| this.kafkaSchemaFactory = new KafkaSchemaFactory(this, name); |
| this.closer = new KafkaAsyncCloser(); |
| } |
| |
| @Override |
| public KafkaStoragePluginConfig getConfig() { |
| return this.config; |
| } |
| |
| @Override |
| public boolean supportsRead() { |
| return true; |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) { |
| this.kafkaSchemaFactory.registerSchemas(schemaConfig, parent); |
| } |
| |
| @Override |
| public Set<StoragePluginOptimizerRule> getOptimizerRules( |
| OptimizerRulesContext optimizerRulesContext, |
| PlannerPhase phase |
| ) { |
| switch (phase) { |
| case PHYSICAL: |
| return ImmutableSet.of(KafkaPushDownFilterIntoScan.INSTANCE); |
| default: |
| return ImmutableSet.of(); |
| } |
| } |
| |
| @Override |
| public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection) throws IOException { |
| KafkaScanSpec kafkaScanSpec = selection.getListWith( |
| new TypeReference<KafkaScanSpec>() { |
| }); |
| return new KafkaGroupScan(this, kafkaScanSpec, null, -1); |
| } |
| |
| public void registerToClose(AutoCloseable autoCloseable) { |
| closer.close(autoCloseable); |
| } |
| |
| @Override |
| public void close() { |
| closer.close(); |
| } |
| } |