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proto: supporting zstd dictionary #4968

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proto: supporting zstd dictionary #4968

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21 changes: 21 additions & 0 deletions proto/remote_execution.proto
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Original file line number Diff line number Diff line change
Expand Up @@ -2000,6 +2000,9 @@ message Compressor {

// Brotli compression.
BROTLI = 3;

// Zstandard compression with external dictionary support.
ZSTD_DICT = 4;
}
}

Expand Down Expand Up @@ -2036,6 +2039,24 @@ message CacheCapabilities {
// [BatchUpdateBlobs][build.bazel.remote.execution.v2.ContentAddressableStorage.BatchUpdateBlobs]
// requests.
repeated Compressor.Value supported_batch_update_compressors = 7;

// BUILDBUDDY EXTENSIONS BELOW

// A digest pointing to a [ZstdDictionaryRegistry][build.bazel.remote.execution.v2.ZstdDictionaryRegistry]
// object in CAS that contains the zstd dictionaries that should be used for
// compressing and decompressing blobs.
//
// This MUST be set if the server supports ZSTD_DICT compression.
Digest zstd_dictionary_registry = 1000;
}

message ZstdDictionaryRegistry {
// Each file's name should be set to either the dictID of the ZSTD dictionary (32 bits unsigned integer),
// or "default" for the default dictionary that client SHOULD use to compress uploaded data.
//
// A "default" dictionary MUST always be present.
// The server MUST ensure that all listed dictionaries are accessible throughout the invocation duration.
repeated FileNode dictionaries = 1;
}

// Capabilities of the remote execution system.
Expand Down