// 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;
}
}