feat(tvix/castore): extend blobstore protos for verified streaming r/6954

This pdates the proto docstrings a bit, especially w.r.t. verified
streaming.
It also adds send_chunks, send_bao fields to StatBlobRequest (renamed
from BlobMeta)

Change-Id: I590cc8646d86b73bca9f38a9b6d9ea15e4df5cb6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9951
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>

1 files changed, 179 insertions, 54 deletions

diff --git a/tvix/castore-go/rpc_blobstore.pb.go b/tvix/castore-go/rpc_blobstore.pb.go
index 6dbf648a4c10..73bcb91ba931 100644
--- a/tvix/castore-go/rpc_blobstore.pb.go
+++ b/tvix/castore-go/rpc_blobstore.pb.go
@@ -30,6 +30,10 @@ type StatBlobRequest struct {
 
 	// The blake3 digest of the blob requested
 	Digest []byte `protobuf:"bytes,1,opt,name=digest,proto3" json:"digest,omitempty"`
+	// Whether the server should reply with a list of more granular chunks.
+	SendChunks bool `protobuf:"varint,2,opt,name=send_chunks,json=sendChunks,proto3" json:"send_chunks,omitempty"`
+	// Whether the server should reply with a bao.
+	SendBao bool `protobuf:"varint,3,opt,name=send_bao,json=sendBao,proto3" json:"send_bao,omitempty"`
 }
 
 func (x *StatBlobRequest) Reset() {
@@ -71,14 +75,36 @@ func (x *StatBlobRequest) GetDigest() []byte {
 	return nil
 }
 
-type BlobMeta struct {
+func (x *StatBlobRequest) GetSendChunks() bool {
+	if x != nil {
+		return x.SendChunks
+	}
+	return false
+}
+
+func (x *StatBlobRequest) GetSendBao() bool {
+	if x != nil {
+		return x.SendBao
+	}
+	return false
+}
+
+type StatBlobResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
+
+	// If `send_chunks` was set to true, this MAY contain a list of more
+	// granular chunks, which then may be read individually via the `Read`
+	// method.
+	Chunks []*StatBlobResponse_ChunkMeta `protobuf:"bytes,2,rep,name=chunks,proto3" json:"chunks,omitempty"`
+	// If `send_bao` was set to true, this MAY contain a outboard bao.
+	// The exact format and message types here will still be fleshed out.
+	Bao []byte `protobuf:"bytes,3,opt,name=bao,proto3" json:"bao,omitempty"`
 }
 
-func (x *BlobMeta) Reset() {
-	*x = BlobMeta{}
+func (x *StatBlobResponse) Reset() {
+	*x = StatBlobResponse{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -86,13 +112,13 @@ func (x *BlobMeta) Reset() {
 	}
 }
 
-func (x *BlobMeta) String() string {
+func (x *StatBlobResponse) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*BlobMeta) ProtoMessage() {}
+func (*StatBlobResponse) ProtoMessage() {}
 
-func (x *BlobMeta) ProtoReflect() protoreflect.Message {
+func (x *StatBlobResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -104,11 +130,25 @@ func (x *BlobMeta) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use BlobMeta.ProtoReflect.Descriptor instead.
-func (*BlobMeta) Descriptor() ([]byte, []int) {
+// Deprecated: Use StatBlobResponse.ProtoReflect.Descriptor instead.
+func (*StatBlobResponse) Descriptor() ([]byte, []int) {
 	return file_tvix_castore_protos_rpc_blobstore_proto_rawDescGZIP(), []int{1}
 }
 
+func (x *StatBlobResponse) GetChunks() []*StatBlobResponse_ChunkMeta {
+	if x != nil {
+		return x.Chunks
+	}
+	return nil
+}
+
+func (x *StatBlobResponse) GetBao() []byte {
+	if x != nil {
+		return x.Bao
+	}
+	return nil
+}
+
 type ReadBlobRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -254,41 +294,112 @@ func (x *PutBlobResponse) GetDigest() []byte {
 	return nil
 }
 
+type StatBlobResponse_ChunkMeta struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Digest of that specific chunk
+	Digest []byte `protobuf:"bytes,1,opt,name=digest,proto3" json:"digest,omitempty"`
+	// Length of that chunk, in bytes.
+	Size uint64 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
+}
+
+func (x *StatBlobResponse_ChunkMeta) Reset() {
+	*x = StatBlobResponse_ChunkMeta{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatBlobResponse_ChunkMeta) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StatBlobResponse_ChunkMeta) ProtoMessage() {}
+
+func (x *StatBlobResponse_ChunkMeta) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_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 StatBlobResponse_ChunkMeta.ProtoReflect.Descriptor instead.
+func (*StatBlobResponse_ChunkMeta) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_rpc_blobstore_proto_rawDescGZIP(), []int{1, 0}
+}
+
+func (x *StatBlobResponse_ChunkMeta) GetDigest() []byte {
+	if x != nil {
+		return x.Digest
+	}
+	return nil
+}
+
+func (x *StatBlobResponse_ChunkMeta) GetSize() uint64 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
 var File_tvix_castore_protos_rpc_blobstore_proto protoreflect.FileDescriptor
 
 var file_tvix_castore_protos_rpc_blobstore_proto_rawDesc = []byte{
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 }
 
 var (
@@ -303,26 +414,28 @@ func file_tvix_castore_protos_rpc_blobstore_proto_rawDescGZIP() []byte {
 	return file_tvix_castore_protos_rpc_blobstore_proto_rawDescData
 }
 
-var file_tvix_castore_protos_rpc_blobstore_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_tvix_castore_protos_rpc_blobstore_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_tvix_castore_protos_rpc_blobstore_proto_goTypes = []interface{}{
-	(*StatBlobRequest)(nil), // 0: tvix.castore.v1.StatBlobRequest
-	(*BlobMeta)(nil),        // 1: tvix.castore.v1.BlobMeta
-	(*ReadBlobRequest)(nil), // 2: tvix.castore.v1.ReadBlobRequest
-	(*BlobChunk)(nil),       // 3: tvix.castore.v1.BlobChunk
-	(*PutBlobResponse)(nil), // 4: tvix.castore.v1.PutBlobResponse
+	(*StatBlobRequest)(nil),            // 0: tvix.castore.v1.StatBlobRequest
+	(*StatBlobResponse)(nil),           // 1: tvix.castore.v1.StatBlobResponse
+	(*ReadBlobRequest)(nil),            // 2: tvix.castore.v1.ReadBlobRequest
+	(*BlobChunk)(nil),                  // 3: tvix.castore.v1.BlobChunk
+	(*PutBlobResponse)(nil),            // 4: tvix.castore.v1.PutBlobResponse
+	(*StatBlobResponse_ChunkMeta)(nil), // 5: tvix.castore.v1.StatBlobResponse.ChunkMeta
 }
 var file_tvix_castore_protos_rpc_blobstore_proto_depIdxs = []int32{
-	0, // 0: tvix.castore.v1.BlobService.Stat:input_type -> tvix.castore.v1.StatBlobRequest
-	2, // 1: tvix.castore.v1.BlobService.Read:input_type -> tvix.castore.v1.ReadBlobRequest
-	3, // 2: tvix.castore.v1.BlobService.Put:input_type -> tvix.castore.v1.BlobChunk
-	1, // 3: tvix.castore.v1.BlobService.Stat:output_type -> tvix.castore.v1.BlobMeta
-	3, // 4: tvix.castore.v1.BlobService.Read:output_type -> tvix.castore.v1.BlobChunk
-	4, // 5: tvix.castore.v1.BlobService.Put:output_type -> tvix.castore.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
+	5, // 0: tvix.castore.v1.StatBlobResponse.chunks:type_name -> tvix.castore.v1.StatBlobResponse.ChunkMeta
+	0, // 1: tvix.castore.v1.BlobService.Stat:input_type -> tvix.castore.v1.StatBlobRequest
+	2, // 2: tvix.castore.v1.BlobService.Read:input_type -> tvix.castore.v1.ReadBlobRequest
+	3, // 3: tvix.castore.v1.BlobService.Put:input_type -> tvix.castore.v1.BlobChunk
+	1, // 4: tvix.castore.v1.BlobService.Stat:output_type -> tvix.castore.v1.StatBlobResponse
+	3, // 5: tvix.castore.v1.BlobService.Read:output_type -> tvix.castore.v1.BlobChunk
+	4, // 6: tvix.castore.v1.BlobService.Put:output_type -> tvix.castore.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
 }
 
 func init() { file_tvix_castore_protos_rpc_blobstore_proto_init() }
@@ -344,7 +457,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 			}
 		}
 		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BlobMeta); i {
+			switch v := v.(*StatBlobResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -391,6 +504,18 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatBlobResponse_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{
@@ -398,7 +523,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_tvix_castore_protos_rpc_blobstore_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   5,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   1,
 		},