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// Copyright 2017 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.exec.local;
import com.google.devtools.build.lib.vfs.Path;
import java.io.IOException;
import java.util.Map;
/**
* Allows just-in-time rewriting of the environment used for local actions. Do not use! This class
* probably should not exist, but is currently necessary for our local MacOS support.
*/
public interface LocalEnvProvider {
public static final LocalEnvProvider UNMODIFIED =
new LocalEnvProvider() {
@Override
public Map<String, String> rewriteLocalEnv(
Map<String, String> env, Path execRoot, String fallbackTmpDir, String productName) {
return env;
}
};
/**
* Rewrites a {@code Spawn}'s the environment if necessary.
*
* @param env the Spawn's environment to rewrite
* @param execRoot the path where the Spawn is executed
* @param fallbackTmpDir an absolute path to a temp directory that the Spawn could use. The
* particular implementation of {@link LocalEnvProvider} may choose to use some other path,
* typically the "TMPDIR" environment variable in the Bazel client's environment, but if
* that's unavailable, the implementation may decide to use this {@code fallbackTmpDir}.
* @param productName name of the Bazel binary, e.g. "bazel"
*/
Map<String, String> rewriteLocalEnv(
Map<String, String> env, Path execRoot, String fallbackTmpDir, String productName)
throws IOException;
}
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