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// Copyright 2016 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.sandbox;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.io.IOException;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
/**
* SandboxExecRoot is responsible for making a list of input files available inside the directory,
* so that a process running inside the directory can access the files. It also handles moving the
* output files generated by the process out of the directory into a destination directory.
*/
public interface SandboxExecRoot {
/**
* Creates the sandboxed execution root, making all {@code inputs} available for reading, making
* sure that the parent directories of all {@code outputs} and that all {@code writableDirs}
* exist and can be written into.
*
* @param inputs Specifies the input files to be made available inside the directory. The key of
* the map is a relative path inside the sandboxed execution root, while the value is the
* absolute path of the file in the filesystem.
* @param outputs Output files that the process is expected to write to as relative paths to the
* sandboxed execution root.
* @param writableDirs Directories that the process may write into. All paths that are not inside
* the sandboxed execution root must be ignored by this method.
* @throws IOException
*/
void createFileSystem(
Map<PathFragment, Path> inputs, Collection<PathFragment> outputs, Set<Path> writableDirs)
throws IOException;
/**
* Moves all {@code outputs} to {@code execRoot} while keeping the directory structure.
*
* @throws IOException
*/
void copyOutputs(Path execRoot, Collection<PathFragment> outputs) throws IOException;
}
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