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authorFlorian Klink <flokli@flokli.de>2022-10-30T11·57+0100
committerflokli <flokli@flokli.de>2022-12-22T14·35+0000
commit2e04f68df8c69034151cce5b56ceedb0653687cd (patch)
tree6048fc51e54da538583ed44655e6298b6b4eb21e /tvix/store/protos
parent870cd533dd98e708f9870a8c85577681697db372 (diff)
feat(tvix/proto): add rpc_directory.proto r/5471
This provides an interface to retrieve and upload single Directory
messages, or a DAG of them.

Change-Id: Id9e7084bd697d843649a122da2c992a3e36d808c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7137
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Diffstat (limited to 'tvix/store/protos')
-rw-r--r--tvix/store/protos/rpc_directory.proto46
1 files changed, 46 insertions, 0 deletions
diff --git a/tvix/store/protos/rpc_directory.proto b/tvix/store/protos/rpc_directory.proto
new file mode 100644
index 000000000000..29e175a106b2
--- /dev/null
+++ b/tvix/store/protos/rpc_directory.proto
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2022 The Tvix Authors
+syntax = "proto3";
+
+package tvix.store.v1;
+
+import "tvix/store/protos/castore.proto";
+
+service DirectoryService {
+  // Get retrieves a stream of Directory messages, by using the lookup
+  // parameters in GetDirectoryRequest.
+  // Keep in mind multiple DirectoryNodes in different parts of the graph might
+  // have the same digest if they have the same underlying contents,
+  // so sending subsequent ones can be omitted.
+  rpc Get(GetDirectoryRequest) returns (stream Directory);
+
+  // Put uploads a graph of Directory messages.
+  // Individual Directory messages need to be send in an order walking up
+  // from the leaves to the root - a Directory message can only refer to
+  // Directory messages previously sent in the same stream.
+  // Keep in mind multiple DirectoryNodes in different parts of the graph might
+  // have the same digest if they have the same underlying contents,
+  // so sending subsequent ones can be omitted.
+  // We might add a separate method, allowing to send partial graphs at a later
+  // time, if requiring to send the full graph turns out to be a problem.
+  rpc Put(stream Directory) returns (PutDirectoryResponse);
+}
+
+message GetDirectoryRequest {
+  oneof by_what {
+      // The blake3 hash of the (root) Directory message, serialized in
+      // protobuf canonical form.
+      // Keep in mind this can be a subtree of another root.
+      bytes digest = 1;
+  }
+
+  // If set to true, recursively resolve all child Directory messages.
+  // Directory messages SHOULD be streamed in a recursive breadth-first walk,
+  // but other orders are also fine, as long as Directory messages are only
+  // sent after they are referred to from previously sent Directory messages.
+  bool recursive = 2;
+}
+
+message PutDirectoryResponse {
+  bytes root_digest = 1;
+}