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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.auto.value.AutoValue;
import com.google.common.annotations.VisibleForTesting;
import com.google.devtools.build.lib.vfs.PathFragment;
/** Definition of a symlink in the output tree of a Fileset rule. */
@AutoValue
public abstract class FilesetOutputSymlink {
private static final Integer STRIPPED_METADATA = new Integer(-1);
/** Final name of the symlink relative to the Fileset's output directory. */
public abstract PathFragment getName();
/**
* Target of the symlink. This may be relative to the target's location if the target itself is a
* relative symlink. We can override it by using FilesetEntry.symlinks = 'dereference'.
*/
public abstract PathFragment getTargetPath();
/**
* Return the best effort metadata about the target. Currently this will be a FileStateValue for
* source targets. For generated targets we try to return a FileArtifactValue when possible, or
* else this will be a Integer hashcode of the target.
*/
public abstract Object getMetadata();
/** true if the target is a generated artifact */
public abstract boolean isGeneratedTarget();
@Override
public String toString() {
if (getMetadata() == STRIPPED_METADATA) {
return String.format(
"FilesetOutputSymlink(%s -> %s)",
getName().getPathString(), getTargetPath().getPathString());
} else {
return String.format(
"FilesetOutputSymlink(%s -> %s | metadataHash=%s)",
getName().getPathString(), getTargetPath().getPathString(), getMetadata());
}
}
@VisibleForTesting
public static FilesetOutputSymlink createForTesting(PathFragment name, PathFragment target) {
return new AutoValue_FilesetOutputSymlink(name, target, STRIPPED_METADATA, false);
}
/**
* @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 metadata corresponding to the target.
* @param isGeneratedTarget true if the target is generated.
*/
public static FilesetOutputSymlink create(
PathFragment name, PathFragment target, Object metadata, boolean isGeneratedTarget) {
return new AutoValue_FilesetOutputSymlink(name, target, metadata, isGeneratedTarget);
}
}
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