| // Copyright 2019 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.runtime; |
| |
| import com.google.devtools.build.lib.buildeventstream.ArtifactGroupNamer; |
| import com.google.devtools.build.lib.buildeventstream.BuildEventStreamProtos.BuildEventId.NamedSetOfFilesId; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetView; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.annotation.concurrent.GuardedBy; |
| import javax.annotation.concurrent.ThreadSafe; |
| |
| /** Conversion of paths to URIs. */ |
| @ThreadSafe |
| public class CountingArtifactGroupNamer implements ArtifactGroupNamer { |
| @GuardedBy("this") |
| private final Map<Object, Long> reportedArtifactNames = new HashMap<>(); |
| |
| @GuardedBy("this") |
| private long nextArtifactName; |
| |
| @Override |
| public NamedSetOfFilesId apply(Object id) { |
| Long name; |
| synchronized (this) { |
| name = reportedArtifactNames.get(id); |
| } |
| if (name == null) { |
| return null; |
| } |
| return NamedSetOfFilesId.newBuilder().setId(name.toString()).build(); |
| } |
| |
| /** |
| * If the {@link NestedSetView} has no name already, return a new name for it. Return null |
| * otherwise. |
| */ |
| public synchronized String maybeName(NestedSetView<?> view) { |
| if (reportedArtifactNames.containsKey(view.identifier())) { |
| return null; |
| } |
| Long name = nextArtifactName; |
| nextArtifactName++; |
| reportedArtifactNames.put(view.identifier(), name); |
| return name.toString(); |
| } |
| } |