| // Copyright 2014 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.actions; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| |
| import java.util.Set; |
| |
| /** |
| * A message sent conveying a set of changed files. This is sent over the event bus if a build is |
| * discovered to have changed files. If many files have changed, the set of changed files will |
| * be empty, but {@link #getChangedFileCount} will still return the correct number. |
| */ |
| public class ChangedFilesMessage { |
| |
| private final Set<PathFragment> changedFiles; |
| private final int changedFileCount; |
| |
| public ChangedFilesMessage(Set<PathFragment> changedFiles, int changedFileCount) { |
| this.changedFiles = ImmutableSet.copyOf(changedFiles); |
| this.changedFileCount = changedFileCount; |
| } |
| |
| /** |
| * Returns a set with one PathFragment for each file that was changed since the last build, or |
| * an empty set if the set is unknown or would be too big. |
| */ |
| public Set<PathFragment> getChangedFiles() { |
| return changedFiles; |
| } |
| |
| /** |
| * Returns the number of changed files. This will always be the correct number of files, even when |
| * {@link #getChangedFiles} might return an empty set, because the actual set would be too big. |
| */ |
| public int getChangedFileCount() { |
| return changedFileCount; |
| } |
| } |