| // 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.skyframe; |
| |
| import static java.nio.charset.StandardCharsets.US_ASCII; |
| |
| import com.google.common.io.BaseEncoding; |
| import com.google.devtools.build.lib.actions.ActionInput; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.protobuf.ByteString; |
| import java.util.HashMap; |
| import javax.annotation.Nullable; |
| |
| /** A mapping from artifacts to metadata. */ |
| interface InputArtifactData { |
| |
| boolean contains(ActionInput input); |
| |
| @Nullable |
| FileArtifactValue get(ActionInput input); |
| |
| @Nullable |
| FileArtifactValue get(PathFragment fragment); |
| |
| /** |
| * This implementation has a privileged {@link put} method supporting mutations. |
| * |
| * <p>Action execution has distinct phases where this data can be read from multiple threads. It's |
| * important that the underlying data is not modified during those phases. |
| */ |
| final class MutableInputArtifactData implements InputArtifactData { |
| private final HashMap<PathFragment, FileArtifactValue> inputs; |
| |
| public MutableInputArtifactData(int sizeHint) { |
| this.inputs = new HashMap<>(sizeHint); |
| } |
| |
| @Override |
| public boolean contains(ActionInput input) { |
| return inputs.containsKey(input.getExecPath()); |
| } |
| |
| @Override |
| @Nullable |
| public FileArtifactValue get(ActionInput input) { |
| return inputs.get(input.getExecPath()); |
| } |
| |
| @Override |
| @Nullable |
| public FileArtifactValue get(PathFragment fragment) { |
| return inputs.get(fragment); |
| } |
| |
| public void put(Artifact artifact, FileArtifactValue value) { |
| inputs.put(artifact.getExecPath(), value); |
| } |
| |
| @Override |
| public String toString() { |
| return inputs.toString(); |
| } |
| |
| private static ByteString toByteString(byte[] digest) { |
| return ByteString.copyFrom( |
| BaseEncoding.base16().lowerCase().encode(digest).getBytes(US_ASCII)); |
| } |
| } |
| } |