chore(tvix/store/protos): drop unused fields for now r/6608

This wasn't removed yet, and no code is using/populating it so far.

It's confusing, let's update it to the state of things now, and re-
introduce it once we get there.

Change-Id: I68f5ba17a8eee604d8ccd82749da7c8be094cb99
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9351
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

3 files changed, 51 insertions, 213 deletions

diff --git a/tvix/store/protos/rpc_blobstore.pb.go b/tvix/store/protos/rpc_blobstore.pb.go
index d0040ee9da96..987d75e3b997 100644
--- a/tvix/store/protos/rpc_blobstore.pb.go
+++ b/tvix/store/protos/rpc_blobstore.pb.go
@@ -30,17 +30,6 @@ type StatBlobRequest struct {
 
 	// The blake3 digest of the blob requested
 	Digest []byte `protobuf:"bytes,1,opt,name=digest,proto3" json:"digest,omitempty"`
-	// Whether to include the chunks field
-	IncludeChunks bool `protobuf:"varint,2,opt,name=include_chunks,json=includeChunks,proto3" json:"include_chunks,omitempty"`
-	// Whether to include the inline_bao field, containing an (outboard) bao.
-	// The [bao](https://github.com/oconnor663/bao/blob/master/docs/spec.md)
-	// can be used to validate chunks end up hashing to the same root digest.
-	// These only really matter when only downloading parts of a blob. Some
-	// caution needs to be applied when validating chunks - the bao works with
-	// 1K leaf nodes, which might not align with the chunk sizes - this might
-	// imply a neighboring chunk might need to be (partially) fetched to
-	// validate the hash.
-	IncludeBao bool `protobuf:"varint,3,opt,name=include_bao,json=includeBao,proto3" json:"include_bao,omitempty"`
 }
 
 func (x *StatBlobRequest) Reset() {
@@ -82,32 +71,10 @@ func (x *StatBlobRequest) GetDigest() []byte {
 	return nil
 }
 
-func (x *StatBlobRequest) GetIncludeChunks() bool {
-	if x != nil {
-		return x.IncludeChunks
-	}
-	return false
-}
-
-func (x *StatBlobRequest) GetIncludeBao() bool {
-	if x != nil {
-		return x.IncludeBao
-	}
-	return false
-}
-
-// BlobMeta provides more granular chunking information for the requested blob,
-// and baos.
 type BlobMeta struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
-
-	// This provides a list of chunks.
-	// Concatenating their contents would produce a blob with the digest that
-	// was specified in the request.
-	Chunks    []*BlobMeta_ChunkMeta `protobuf:"bytes,1,rep,name=chunks,proto3" json:"chunks,omitempty"`
-	InlineBao []byte                `protobuf:"bytes,2,opt,name=inline_bao,json=inlineBao,proto3" json:"inline_bao,omitempty"`
 }
 
 func (x *BlobMeta) Reset() {
@@ -142,20 +109,6 @@ func (*BlobMeta) Descriptor() ([]byte, []int) {
 	return file_tvix_store_protos_rpc_blobstore_proto_rawDescGZIP(), []int{1}
 }
 
-func (x *BlobMeta) GetChunks() []*BlobMeta_ChunkMeta {
-	if x != nil {
-		return x.Chunks
-	}
-	return nil
-}
-
-func (x *BlobMeta) GetInlineBao() []byte {
-	if x != nil {
-		return x.InlineBao
-	}
-	return nil
-}
-
 type ReadBlobRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -301,109 +254,40 @@ func (x *PutBlobResponse) GetDigest() []byte {
 	return nil
 }
 
-type BlobMeta_ChunkMeta struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Digest []byte `protobuf:"bytes,1,opt,name=digest,proto3" json:"digest,omitempty"`
-	Size   uint32 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
-}
-
-func (x *BlobMeta_ChunkMeta) Reset() {
-	*x = BlobMeta_ChunkMeta{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_tvix_store_protos_rpc_blobstore_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *BlobMeta_ChunkMeta) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*BlobMeta_ChunkMeta) ProtoMessage() {}
-
-func (x *BlobMeta_ChunkMeta) ProtoReflect() protoreflect.Message {
-	mi := &file_tvix_store_protos_rpc_blobstore_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use BlobMeta_ChunkMeta.ProtoReflect.Descriptor instead.
-func (*BlobMeta_ChunkMeta) Descriptor() ([]byte, []int) {
-	return file_tvix_store_protos_rpc_blobstore_proto_rawDescGZIP(), []int{1, 0}
-}
-
-func (x *BlobMeta_ChunkMeta) GetDigest() []byte {
-	if x != nil {
-		return x.Digest
-	}
-	return nil
-}
-
-func (x *BlobMeta_ChunkMeta) GetSize() uint32 {
-	if x != nil {
-		return x.Size
-	}
-	return 0
-}
-
 var File_tvix_store_protos_rpc_blobstore_proto protoreflect.FileDescriptor
 
 var file_tvix_store_protos_rpc_blobstore_proto_rawDesc = []byte{
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 }
 
 var (
@@ -418,28 +302,26 @@ func file_tvix_store_protos_rpc_blobstore_proto_rawDescGZIP() []byte {
 	return file_tvix_store_protos_rpc_blobstore_proto_rawDescData
 }
 
-var file_tvix_store_protos_rpc_blobstore_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_tvix_store_protos_rpc_blobstore_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_tvix_store_protos_rpc_blobstore_proto_goTypes = []interface{}{
-	(*StatBlobRequest)(nil),    // 0: tvix.store.v1.StatBlobRequest
-	(*BlobMeta)(nil),           // 1: tvix.store.v1.BlobMeta
-	(*ReadBlobRequest)(nil),    // 2: tvix.store.v1.ReadBlobRequest
-	(*BlobChunk)(nil),          // 3: tvix.store.v1.BlobChunk
-	(*PutBlobResponse)(nil),    // 4: tvix.store.v1.PutBlobResponse
-	(*BlobMeta_ChunkMeta)(nil), // 5: tvix.store.v1.BlobMeta.ChunkMeta
+	(*StatBlobRequest)(nil), // 0: tvix.store.v1.StatBlobRequest
+	(*BlobMeta)(nil),        // 1: tvix.store.v1.BlobMeta
+	(*ReadBlobRequest)(nil), // 2: tvix.store.v1.ReadBlobRequest
+	(*BlobChunk)(nil),       // 3: tvix.store.v1.BlobChunk
+	(*PutBlobResponse)(nil), // 4: tvix.store.v1.PutBlobResponse
 }
 var file_tvix_store_protos_rpc_blobstore_proto_depIdxs = []int32{
-	5, // 0: tvix.store.v1.BlobMeta.chunks:type_name -> tvix.store.v1.BlobMeta.ChunkMeta
-	0, // 1: tvix.store.v1.BlobService.Stat:input_type -> tvix.store.v1.StatBlobRequest
-	2, // 2: tvix.store.v1.BlobService.Read:input_type -> tvix.store.v1.ReadBlobRequest
-	3, // 3: tvix.store.v1.BlobService.Put:input_type -> tvix.store.v1.BlobChunk
-	1, // 4: tvix.store.v1.BlobService.Stat:output_type -> tvix.store.v1.BlobMeta
-	3, // 5: tvix.store.v1.BlobService.Read:output_type -> tvix.store.v1.BlobChunk
-	4, // 6: tvix.store.v1.BlobService.Put:output_type -> tvix.store.v1.PutBlobResponse
-	4, // [4:7] is the sub-list for method output_type
-	1, // [1:4] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
+	0, // 0: tvix.store.v1.BlobService.Stat:input_type -> tvix.store.v1.StatBlobRequest
+	2, // 1: tvix.store.v1.BlobService.Read:input_type -> tvix.store.v1.ReadBlobRequest
+	3, // 2: tvix.store.v1.BlobService.Put:input_type -> tvix.store.v1.BlobChunk
+	1, // 3: tvix.store.v1.BlobService.Stat:output_type -> tvix.store.v1.BlobMeta
+	3, // 4: tvix.store.v1.BlobService.Read:output_type -> tvix.store.v1.BlobChunk
+	4, // 5: tvix.store.v1.BlobService.Put:output_type -> tvix.store.v1.PutBlobResponse
+	3, // [3:6] is the sub-list for method output_type
+	0, // [0:3] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
 }
 
 func init() { file_tvix_store_protos_rpc_blobstore_proto_init() }
@@ -508,18 +390,6 @@ func file_tvix_store_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_store_protos_rpc_blobstore_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BlobMeta_ChunkMeta); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -527,7 +397,7 @@ func file_tvix_store_protos_rpc_blobstore_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_tvix_store_protos_rpc_blobstore_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/tvix/store/protos/rpc_blobstore.proto b/tvix/store/protos/rpc_blobstore.proto
index a7d48cf7709c..2ca3df60a81b 100644
--- a/tvix/store/protos/rpc_blobstore.proto
+++ b/tvix/store/protos/rpc_blobstore.proto
@@ -7,12 +7,10 @@ package tvix.store.v1;
 option go_package = "code.tvl.fyi/tvix/store/protos;storev1";
 
 service BlobService {
-    // Stat exposes metadata about a given blob,
+    // In the future, Stat will expose more metadata about a given blob,
     // such as more granular chunking, baos.
-    // It implicitly allows checking for existence too, as asking this for a
-    // non-existing Blob will return a Status::not_found grpc error.
-    // If there's no more granular chunking available, the response will simply
-    // contain a single chunk.
+    // For now, it's only used to check for the existence of a blob, as asking
+    // this for a non-existing Blob will return a Status::not_found gRPC error.
     rpc Stat(StatBlobRequest) returns (BlobMeta);
 
     // Read returns a stream of BlobChunk, which is just a stream of bytes with
@@ -20,7 +18,6 @@ service BlobService {
     //
     // The server may decide on whatever chunking it may seem fit as a size for
     // the individual BlobChunk sent in the response stream.
-    //
     rpc Read(ReadBlobRequest) returns (stream BlobChunk);
 
     // Put uploads a Blob, by reading a stream of bytes.
@@ -33,34 +30,9 @@ service BlobService {
 message StatBlobRequest {
     // The blake3 digest of the blob requested
     bytes digest = 1;
-
-    // Whether to include the chunks field
-    bool include_chunks = 2;
-    // Whether to include the inline_bao field, containing an (outboard) bao.
-    // The [bao](https://github.com/oconnor663/bao/blob/master/docs/spec.md)
-    // can be used to validate chunks end up hashing to the same root digest.
-    // These only really matter when only downloading parts of a blob. Some
-    // caution needs to be applied when validating chunks - the bao works with
-    // 1K leaf nodes, which might not align with the chunk sizes - this might
-    // imply a neighboring chunk might need to be (partially) fetched to
-    // validate the hash.
-    bool include_bao = 3;
 }
 
-// BlobMeta provides more granular chunking information for the requested blob,
-// and baos.
 message BlobMeta {
-    // This provides a list of chunks.
-    // Concatenating their contents would produce a blob with the digest that
-    // was specified in the request.
-    repeated ChunkMeta chunks = 1;
-
-    message ChunkMeta {
-        bytes digest = 1;
-        uint32 size = 2;
-    }
-
-    bytes inline_bao = 2;
 }
 
 message ReadBlobRequest {
diff --git a/tvix/store/protos/rpc_blobstore_grpc.pb.go b/tvix/store/protos/rpc_blobstore_grpc.pb.go
index 3842ea288544..531ebcd2c637 100644
--- a/tvix/store/protos/rpc_blobstore_grpc.pb.go
+++ b/tvix/store/protos/rpc_blobstore_grpc.pb.go
@@ -31,12 +31,10 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type BlobServiceClient interface {
-	// Stat exposes metadata about a given blob,
+	// In the future, Stat will expose more metadata about a given blob,
 	// such as more granular chunking, baos.
-	// It implicitly allows checking for existence too, as asking this for a
-	// non-existing Blob will return a Status::not_found grpc error.
-	// If there's no more granular chunking available, the response will simply
-	// contain a single chunk.
+	// For now, it's only used to check for the existence of a blob, as asking
+	// this for a non-existing Blob will return a Status::not_found gRPC error.
 	Stat(ctx context.Context, in *StatBlobRequest, opts ...grpc.CallOption) (*BlobMeta, error)
 	// Read returns a stream of BlobChunk, which is just a stream of bytes with
 	// the digest specified in ReadBlobRequest.
@@ -138,12 +136,10 @@ func (x *blobServicePutClient) CloseAndRecv() (*PutBlobResponse, error) {
 // All implementations must embed UnimplementedBlobServiceServer
 // for forward compatibility
 type BlobServiceServer interface {
-	// Stat exposes metadata about a given blob,
+	// In the future, Stat will expose more metadata about a given blob,
 	// such as more granular chunking, baos.
-	// It implicitly allows checking for existence too, as asking this for a
-	// non-existing Blob will return a Status::not_found grpc error.
-	// If there's no more granular chunking available, the response will simply
-	// contain a single chunk.
+	// For now, it's only used to check for the existence of a blob, as asking
+	// this for a non-existing Blob will return a Status::not_found gRPC error.
 	Stat(context.Context, *StatBlobRequest) (*BlobMeta, error)
 	// Read returns a stream of BlobChunk, which is just a stream of bytes with
 	// the digest specified in ReadBlobRequest.