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// 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.annotations.VisibleForTesting;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.devtools.build.lib.vfs.PathFragment;
/** Definition of a symlink in the output tree of a Fileset rule. */
public final class FilesetOutputSymlink {
private static final String STRIPPED_METADATA = "<stripped-for-testing>";
/** Final name of the symlink relative to the Fileset's output directory. */
public final PathFragment name;
/** Target of the symlink. Depending on FilesetEntry.symlinks it may be relative or absolute. */
public final PathFragment target;
/** Opaque metadata about the link and its target; should change if either of them changes. */
public final String metadata;
@VisibleForTesting
public FilesetOutputSymlink(PathFragment name, PathFragment target) {
this.name = name;
this.target = target;
this.metadata = STRIPPED_METADATA;
}
/**
* @param name relative path under the Fileset's output directory, including FilesetEntry.destdir
* with and FilesetEntry.strip_prefix applied (if applicable)
* @param target relative or absolute value of the link
* @param metadata opaque metadata about the link and its target; should change if either the link
* or its target changes
*/
public FilesetOutputSymlink(PathFragment name, PathFragment target, String metadata) {
this.name = Preconditions.checkNotNull(name);
this.target = Preconditions.checkNotNull(target);
this.metadata = Preconditions.checkNotNull(metadata);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !obj.getClass().equals(getClass())) {
return false;
}
FilesetOutputSymlink o = (FilesetOutputSymlink) obj;
return name.equals(o.name) && target.equals(o.target) && metadata.equals(o.metadata);
}
@Override
public int hashCode() {
return Objects.hashCode(name, target, metadata);
}
@Override
public String toString() {
if (metadata.equals(STRIPPED_METADATA)) {
return String.format("FilesetOutputSymlink(%s -> %s)",
name.getPathString(), target.getPathString());
} else {
return String.format("FilesetOutputSymlink(%s -> %s | metadata=%s)",
name.getPathString(), target.getPathString(), metadata);
}
}
}
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