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Remote: Add --experimental_capture_corrupted_outputs flag. #13568
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60 changes: 60 additions & 0 deletions
60
src/main/java/com/google/devtools/build/lib/remote/common/OutputDigestMismatchException.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| // Copyright 2021 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.remote.common; | ||
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| import build.bazel.remote.execution.v2.Digest; | ||
| import com.google.devtools.build.lib.vfs.Path; | ||
| import java.io.IOException; | ||
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| /** An exception to indicate the digest of downloaded output does not match the expected value. */ | ||
| public class OutputDigestMismatchException extends IOException { | ||
| private final Digest expected; | ||
| private final Digest actual; | ||
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| private Path localPath; | ||
| private String outputPath; | ||
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| public OutputDigestMismatchException(Digest expected, Digest actual) { | ||
| this.expected = expected; | ||
| this.actual = actual; | ||
| } | ||
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| public void setOutputPath(String outputPath) { | ||
| this.outputPath = outputPath; | ||
| } | ||
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| public String getOutputPath() { | ||
| return outputPath; | ||
| } | ||
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| public Path getLocalPath() { | ||
| return localPath; | ||
| } | ||
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| public void setLocalPath(Path localPath) { | ||
| this.localPath = localPath; | ||
| } | ||
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| @Override | ||
| public String getMessage() { | ||
| return String.format( | ||
| "Output %s download failed: Expected digest '%s/%d' does not match " | ||
| + "received digest '%s/%d'.", | ||
| outputPath, | ||
| expected.getHash(), | ||
| expected.getSizeBytes(), | ||
| actual.getHash(), | ||
| actual.getSizeBytes()); | ||
| } | ||
| } |
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Is it guaranteed (even with broken or malicious backends) that the output path will never contain
..references or start with a/? Should we check that the resulting pathdstis still below thecaptureCorruptedOutputsDirjust to make sure? 🤔There was a problem hiding this comment.
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We are safe here since
outputPathis what we obtained from skyframe and send to remote execution backend (something likebazel-out/darwin-fastbuild/bin/...).It is a path relative to the working directory (or input root depends on the flags) when the remote backend executing the action.
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However, I added the check in case the invariance changed in the future. Thanks for the catch!