| // Copyright 2017 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.skyframe; |
| |
| import com.google.devtools.build.skyframe.DelegatingWalkableGraph; |
| import com.google.devtools.build.skyframe.MemoizingEvaluator; |
| import com.google.devtools.build.skyframe.NodeEntry; |
| import com.google.devtools.build.skyframe.QueryableGraph; |
| import com.google.devtools.build.skyframe.SkyKey; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.annotation.Nullable; |
| |
| /** |
| * {@link com.google.devtools.build.skyframe.WalkableGraph} backed by a {@link SkyframeExecutor}. |
| */ |
| public class SkyframeExecutorWrappingWalkableGraph extends DelegatingWalkableGraph { |
| |
| private SkyframeExecutorWrappingWalkableGraph(MemoizingEvaluator evaluator) { |
| super( |
| new QueryableGraph() { |
| @Nullable |
| @Override |
| public NodeEntry get(@Nullable SkyKey requestor, Reason reason, SkyKey key) |
| throws InterruptedException { |
| return evaluator.getExistingEntryAtCurrentlyEvaluatingVersion(key); |
| } |
| |
| @Override |
| public LookupHint getLookupHint(SkyKey key) { |
| return LookupHint.INDIVIDUAL; |
| } |
| |
| @Override |
| public Map<SkyKey, ? extends NodeEntry> getBatchMap( |
| @Nullable SkyKey requestor, Reason reason, Iterable<? extends SkyKey> keys) |
| throws InterruptedException { |
| Map<SkyKey, NodeEntry> result = new HashMap<>(); |
| for (SkyKey key : keys) { |
| NodeEntry nodeEntry = get(requestor, reason, key); |
| if (nodeEntry != null) { |
| result.put(key, nodeEntry); |
| } |
| } |
| return result; |
| } |
| }); |
| } |
| |
| public static SkyframeExecutorWrappingWalkableGraph of(SkyframeExecutor skyframeExecutor) { |
| // TODO(janakr): Provide the graph in a more principled way. |
| return new SkyframeExecutorWrappingWalkableGraph(skyframeExecutor.getEvaluator()); |
| } |
| } |