| /* |
| * 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.splunk; |
| |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import org.apache.calcite.plan.RelOptRule; |
| 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.base.filter.FilterPushDownUtils; |
| import org.apache.drill.shaded.guava.com.google.common.collect.ImmutableSet; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| public class SplunkStoragePlugin extends AbstractStoragePlugin { |
| |
| private final SplunkPluginConfig config; |
| private final SplunkSchemaFactory schemaFactory; |
| |
| public SplunkStoragePlugin(SplunkPluginConfig configuration, DrillbitContext context, String name) { |
| super(context, name); |
| this.config = configuration; |
| this.schemaFactory = new SplunkSchemaFactory(this); |
| } |
| |
| @Override |
| public SplunkPluginConfig getConfig() { |
| return config; |
| } |
| |
| @Override |
| public boolean supportsRead() { |
| return true; |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) { |
| schemaFactory.registerSchemas(schemaConfig, parent); |
| } |
| |
| @Override |
| public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection) throws IOException { |
| SplunkScanSpec scanSpec = selection.getListWith(context.getLpPersistence().getMapper(), new TypeReference<SplunkScanSpec>() {}); |
| return new SplunkGroupScan(scanSpec); |
| } |
| |
| @Override |
| public Set<? extends RelOptRule> getOptimizerRules(OptimizerRulesContext optimizerContext, PlannerPhase phase) { |
| |
| // Push-down planning is done at the logical phase so it can |
| // influence parallelization in the physical phase. Note that many |
| // existing plugins perform filter push-down at the physical |
| // phase, which also works fine if push-down is independent of |
| // parallelization. |
| if (FilterPushDownUtils.isFilterPushDownPhase(phase)) { |
| return SplunkPushDownListener.rulesFor(optimizerContext); |
| } else { |
| return ImmutableSet.of(); |
| } |
| } |
| } |