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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.bazel.repository;
import com.google.devtools.build.lib.analysis.RuleDefinition;
import com.google.devtools.build.lib.bazel.rules.workspace.NewLocalRepositoryRule;
import com.google.devtools.build.lib.cmdline.PackageIdentifier.RepositoryName;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.skyframe.FileValue;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
/**
* Create a repository from a directory on the local filesystem.
*/
public class NewLocalRepositoryFunction extends RepositoryFunction {
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws SkyFunctionException {
RepositoryName repositoryName = (RepositoryName) skyKey.argument();
Rule rule = getRule(repositoryName, NewLocalRepositoryRule.NAME, env);
if (rule == null) {
return null;
}
FileValue directoryValue = prepareLocalRepositorySymlinkTree(rule, env);
if (directoryValue == null) {
return null;
}
PathFragment pathFragment = getTargetPath(rule);
// Link x/y/z to /some/path/to/y/z.
if (!symlinkLocalRepositoryContents(
directoryValue.realRootedPath().asPath(),
getOutputBase().getFileSystem().getPath(pathFragment),
env)) {
return null;
}
// Link x/BUILD to <build_root>/x.BUILD.
return symlinkBuildFile(rule, getWorkspace(), directoryValue, env);
}
/**
* @see RepositoryFunction#getRule(RepositoryName, String, Environment)
*/
@Override
public SkyFunctionName getSkyFunctionName() {
return SkyFunctionName.create(NewLocalRepositoryRule.NAME.toUpperCase());
}
@Override
public Class<? extends RuleDefinition> getRuleDefinition() {
return NewLocalRepositoryRule.class;
}
}
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