Add support for sandboxing persistent workers.

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MOS_MIGRATED_REVID=134523222

1 files changed, 52 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/worker/SandboxedWorker.java b/src/main/java/com/google/devtools/build/lib/worker/SandboxedWorker.java
new file mode 100644
index 0000000000..7192c3e029
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/worker/SandboxedWorker.java
@@ -0,0 +1,52 @@
+// 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.worker;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.devtools.build.lib.sandbox.SymlinkedExecRoot;
+import com.google.devtools.build.lib.vfs.FileSystemUtils;
+import com.google.devtools.build.lib.vfs.Path;
+import java.io.IOException;
+
+/** A {@link Worker} that runs inside a sandboxed execution root. */
+final class SandboxedWorker extends Worker {
+  private final Path workDir;
+  private final SymlinkedExecRoot symlinkedExecRoot;
+
+  SandboxedWorker(WorkerKey workerKey, int workerId, Path workDir, Path logFile) {
+    super(workerKey, workerId, workDir, logFile);
+    this.workDir = workDir;
+    this.symlinkedExecRoot = new SymlinkedExecRoot(workDir);
+  }
+
+  @Override
+  void destroy() throws IOException {
+    super.destroy();
+    if (symlinkedExecRoot != null) {
+      FileSystemUtils.deleteTree(workDir);
+    }
+  }
+
+  @Override
+  public void prepareExecution(WorkerKey key) throws IOException {
+    symlinkedExecRoot.createFileSystem(
+        key.getInputFiles(), key.getOutputFiles(), ImmutableSet.<Path>of());
+  }
+
+  @Override
+  public void finishExecution(WorkerKey key) throws IOException {
+    symlinkedExecRoot.copyOutputs(key.getExecRoot(), key.getOutputFiles());
+  }
+}