| // Copyright 2018 The Bazel Authors. All rights reserved. |
| // |
| // Licensed 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 com.google.devtools.build.lib.query2; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Iterables; |
| import com.google.devtools.build.lib.query2.engine.Callback; |
| import com.google.devtools.build.lib.query2.engine.Uniquifier; |
| import com.google.devtools.build.skyframe.SkyKey; |
| import java.util.Map; |
| |
| /** |
| * Helper class for visiting the label-only DTC of some given label keys, via BFS following all |
| * target label -> target label dep edges. Disallowed edge filtering is *not* performed. |
| */ |
| public abstract class AbstractUnfilteredLabelDTCVisitor<T> |
| extends AbstractSkyKeyParallelVisitor<T> { |
| protected final SkyQueryEnvironment env; |
| |
| protected AbstractUnfilteredLabelDTCVisitor( |
| SkyQueryEnvironment env, |
| Uniquifier<SkyKey> uniquifier, |
| int processResultsBatchSize, |
| Callback<T> callback) { |
| super( |
| uniquifier, |
| callback, |
| env.getVisitBatchSizeForParallelVisitation(), |
| processResultsBatchSize, |
| env.getVisitTaskStatusCallback()); |
| this.env = env; |
| } |
| |
| @Override |
| protected Visit getVisitResult(Iterable<SkyKey> labelKeys) throws InterruptedException { |
| Map<SkyKey, Iterable<SkyKey>> depsMap = env.getFwdDepLabels(labelKeys); |
| return new Visit(labelKeys, Iterables.concat(depsMap.values())); |
| } |
| |
| @Override |
| protected Iterable<SkyKey> preprocessInitialVisit(Iterable<SkyKey> visitationKeys) { |
| // ParallelTargetVisitorCallback passes in labels. |
| Preconditions.checkState( |
| Iterables.all(visitationKeys, SkyQueryEnvironment.IS_LABEL), visitationKeys); |
| return visitationKeys; |
| } |
| } |