| // 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.serialization; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.devtools.build.lib.vfs.FileSystem; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| |
| /** Custom serialization for {@link Path}s. */ |
| public class PathCodec implements ObjectCodec<Path> { |
| |
| private final FileSystem fileSystem; |
| private final PathFragmentCodec pathFragmentCodec; |
| |
| /** Create an instance for serializing and deserializing {@link Path}s on {@code fileSystem}. */ |
| PathCodec(FileSystem fileSystem) { |
| this.fileSystem = fileSystem; |
| this.pathFragmentCodec = new PathFragmentCodec(); |
| } |
| |
| @Override |
| public Class<Path> getEncodedClass() { |
| return Path.class; |
| } |
| |
| @Override |
| public void serialize(Path path, CodedOutputStream codedOut) |
| throws IOException, SerializationException { |
| Preconditions.checkState( |
| path.getFileSystem() == fileSystem, |
| "Path's FileSystem (%s) did not match the configured FileSystem (%s)", |
| path.getFileSystem(), |
| fileSystem); |
| pathFragmentCodec.serialize(path.asFragment(), codedOut); |
| } |
| |
| @Override |
| public Path deserialize(CodedInputStream codedIn) |
| throws IOException, SerializationException { |
| PathFragment pathFragment = pathFragmentCodec.deserialize(codedIn); |
| return fileSystem.getPath(pathFragment); |
| } |
| } |