| /* |
| * 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.planner.physical.explain; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.calcite.avatica.util.Spacer; |
| import org.apache.calcite.linq4j.Ord; |
| import org.apache.calcite.rel.RelNode; |
| import org.apache.calcite.rel.RelWriter; |
| import org.apache.calcite.rel.metadata.RelMetadataQuery; |
| import org.apache.calcite.runtime.FlatLists; |
| import org.apache.calcite.sql.SqlExplainLevel; |
| import org.apache.calcite.util.Pair; |
| import org.apache.drill.exec.planner.physical.LateralJoinPrel; |
| import org.apache.drill.exec.planner.physical.HashJoinPrel; |
| import org.apache.drill.exec.planner.physical.Prel; |
| import org.apache.drill.exec.planner.physical.UnnestPrel; |
| import org.apache.drill.exec.planner.physical.explain.PrelSequencer.OpId; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| /** |
| * Copied mostly from RelWriterImpl but customized to create user useful ids. |
| */ |
| class NumberingRelWriter implements RelWriter { |
| //~ Instance fields -------------------------------------------------------- |
| |
| protected final PrintWriter pw; |
| private final SqlExplainLevel detailLevel; |
| protected final Spacer spacer = new Spacer(); |
| private final List<Pair<String, Object>> values = new ArrayList<>(); |
| private final Map<String, Prel> sourceOperatorRegistry; |
| |
| private final Map<Prel, OpId> ids; |
| //~ Constructors ----------------------------------------------------------- |
| |
| public NumberingRelWriter(Map<Prel, OpId> ids, PrintWriter pw, SqlExplainLevel detailLevel) { |
| this.pw = pw; |
| this.ids = ids; |
| this.detailLevel = detailLevel; |
| this.sourceOperatorRegistry = new HashMap<>(); |
| } |
| |
| //~ Methods ---------------------------------------------------------------- |
| |
| protected void explain_( |
| RelNode rel, |
| List<Pair<String, Object>> values) { |
| RelMetadataQuery mq = RelMetadataQuery.instance(); |
| if (!mq.isVisibleInExplain(rel, detailLevel)) { |
| // render children in place of this, at same level |
| explainInputs(rel); |
| return; |
| } |
| |
| StringBuilder s = new StringBuilder(); |
| OpId id = ids.get(rel); |
| if (id != null) { |
| s.append(String.format("%02d-%02d", id.fragmentId, id.opId)); |
| }else{ |
| s.append(" "); |
| } |
| s.append(" "); |
| |
| if (id != null && id.opId == 0) { |
| for (int i = 0; i < spacer.get(); i++) { |
| s.append('-'); |
| } |
| }else{ |
| spacer.spaces(s); |
| } |
| |
| s.append(" "); |
| |
| s.append(rel.getRelTypeName().replace("Prel", "")); |
| if (detailLevel != SqlExplainLevel.NO_ATTRIBUTES) { |
| int j = 0; |
| s.append(getDependentSrcOp(rel)); |
| for (Pair<String, Object> value : values) { |
| if (value.right instanceof RelNode) { |
| continue; |
| } |
| if (j++ == 0) { |
| s.append("("); |
| } else { |
| s.append(", "); |
| } |
| s.append(value.left) |
| .append("=[") |
| .append(value.right) |
| .append("]"); |
| } |
| if (j > 0) { |
| s.append(")"); |
| } |
| } |
| if (detailLevel == SqlExplainLevel.ALL_ATTRIBUTES) { |
| s.append(" : rowType = ") |
| .append(rel.getRowType()) |
| .append(": rowcount = ") |
| .append(mq.getRowCount(rel)) |
| .append(", cumulative cost = ") |
| .append(mq.getCumulativeCost(rel)) |
| .append(", id = ") |
| .append(rel.getId()); |
| } |
| pw.println(s); |
| spacer.add(2); |
| explainInputs(rel); |
| spacer.subtract(2); |
| } |
| |
| private String getDependentSrcOp(RelNode rel) { |
| if (rel instanceof UnnestPrel) { |
| return this.getDependentSrcOp((UnnestPrel) rel); |
| } |
| return ""; |
| } |
| |
| private String getDependentSrcOp(UnnestPrel unnest) { |
| Prel parent = this.getRegisteredPrel(unnest.getParentClass()); |
| if (parent != null && parent instanceof LateralJoinPrel) { |
| OpId id = ids.get(parent); |
| return String.format(" [srcOp=%02d-%02d] ", id.fragmentId, id.opId); |
| } |
| return ""; |
| } |
| |
| public void register(Prel toRegister) { |
| this.sourceOperatorRegistry.put(toRegister.getClass().getSimpleName(), toRegister); |
| } |
| |
| public Prel getRegisteredPrel(Class<?> classname) { |
| return this.sourceOperatorRegistry.get(classname.getSimpleName()); |
| } |
| |
| public void unRegister(Prel unregister) { |
| this.sourceOperatorRegistry.remove(unregister.getClass().getSimpleName()); |
| } |
| |
| |
| private void explainInputs(RelNode rel) { |
| if (rel instanceof LateralJoinPrel) { |
| this.explainInputs((LateralJoinPrel) rel); |
| } else { |
| List<RelNode> inputs = rel.getInputs(); |
| if (rel instanceof HashJoinPrel && ((HashJoinPrel) rel).isSwapped()) { |
| HashJoinPrel joinPrel = (HashJoinPrel) rel; |
| inputs = FlatLists.of(joinPrel.getRight(), joinPrel.getLeft()); |
| } |
| for (RelNode input : inputs) { |
| input.explain(this); |
| } |
| } |
| } |
| |
| //Lateral is handled differently because explain plan |
| //needs to show relation between Lateral and Unnest operators. |
| private void explainInputs(LateralJoinPrel lateralJoinPrel) { |
| lateralJoinPrel.getInput(0).explain(this); |
| this.register(lateralJoinPrel); |
| lateralJoinPrel.getInput(1).explain(this); |
| this.unRegister(lateralJoinPrel); |
| } |
| |
| public final void explain(RelNode rel, List<Pair<String, Object>> valueList) { |
| explain_(rel, valueList); |
| } |
| |
| public SqlExplainLevel getDetailLevel() { |
| return detailLevel; |
| } |
| |
| public RelWriter input(String term, RelNode input) { |
| values.add(Pair.of(term, (Object) input)); |
| return this; |
| } |
| |
| public RelWriter item(String term, Object value) { |
| values.add(Pair.of(term, value)); |
| return this; |
| } |
| |
| public RelWriter itemIf(String term, Object value, boolean condition) { |
| if (condition) { |
| item(term, value); |
| } |
| return this; |
| } |
| |
| public RelWriter done(RelNode node) { |
| int i = 0; |
| if (values.size() > 0 && values.get(0).left.equals("subset")) { |
| ++i; |
| } |
| for (RelNode input : node.getInputs()) { |
| assert values.get(i).right == input; |
| ++i; |
| } |
| List<Pair<String, Object>> valuesCopy = |
| ImmutableList.copyOf(values); |
| values.clear(); |
| explain_(node, valuesCopy); |
| pw.flush(); |
| return this; |
| } |
| |
| public boolean nest() { |
| return false; |
| } |
| |
| /** |
| * Converts the collected terms and values to a string. Does not write to |
| * the parent writer. |
| */ |
| public String simple() { |
| final StringBuilder buf = new StringBuilder("("); |
| for (Ord<Pair<String, Object>> ord : Ord.zip(values)) { |
| if (ord.i > 0) { |
| buf.append(", "); |
| } |
| buf.append(ord.e.left).append("=[").append(ord.e.right).append("]"); |
| } |
| buf.append(")"); |
| return buf.toString(); |
| } |
| } |
| |