chore(tvix): move castore golang bindings to tvix/castore-go r/6843

Have `tvix/castore/protos` only contain the protos, no go noise.

Make the `.pb.go` file generation a pure Nix build
at `//tvix/castore/protos:go-bindings`, and have a script at
`//tvix:castore-go-generate` (TBD) that copies the results to
`tvix/castore-go`.

`//tvix:castore-go`, with sources in `tvix/castore-go` now contains the
tooling around the generated bindings, and the generated bindings
themselves (So go mod replace workflows still work).

An additional CI step is added from there to ensure idempotenty of
the .pb.go files.

The code.tvl.fyi webserver config is updated to the new source code
path. I'm still unsure if we want to also update the go.mod name. While
being a backwards-incompatible change, it'll probbaly make it easier
where to find these files, and the amount of external consumers is still
low enough.

Part of b/323.

Change-Id: I2edadd118c22ec08e57c693f6cc2ef3261c62489
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9787
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI

1 files changed, 580 insertions, 0 deletions

diff --git a/tvix/castore-go/castore.pb.go b/tvix/castore-go/castore.pb.go
new file mode 100644
index 000000000000..5323d6c923a8
--- /dev/null
+++ b/tvix/castore-go/castore.pb.go
@@ -0,0 +1,580 @@
+// SPDX-FileCopyrightText: edef <edef@unfathomable.blue>
+// SPDX-License-Identifier: OSL-3.0 OR MIT OR Apache-2.0
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.31.0
+// 	protoc        (unknown)
+// source: tvix/castore/protos/castore.proto
+
+package castorev1
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// A Directory can contain Directory, File or Symlink nodes.
+// Each of these nodes have a name attribute, which is the basename in that directory
+// and node type specific attributes.
+// The name attribute:
+//   - MUST not contain slashes or null bytes
+//   - MUST not be '.' or '..'
+//   - MUST be unique across all three lists
+//
+// Elements in each list need to be lexicographically ordered by the name
+// attribute.
+type Directory struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directories []*DirectoryNode `protobuf:"bytes,1,rep,name=directories,proto3" json:"directories,omitempty"`
+	Files       []*FileNode      `protobuf:"bytes,2,rep,name=files,proto3" json:"files,omitempty"`
+	Symlinks    []*SymlinkNode   `protobuf:"bytes,3,rep,name=symlinks,proto3" json:"symlinks,omitempty"`
+}
+
+func (x *Directory) Reset() {
+	*x = Directory{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_castore_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Directory) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Directory) ProtoMessage() {}
+
+func (x *Directory) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_protos_castore_proto_msgTypes[0]
+	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 Directory.ProtoReflect.Descriptor instead.
+func (*Directory) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_castore_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Directory) GetDirectories() []*DirectoryNode {
+	if x != nil {
+		return x.Directories
+	}
+	return nil
+}
+
+func (x *Directory) GetFiles() []*FileNode {
+	if x != nil {
+		return x.Files
+	}
+	return nil
+}
+
+func (x *Directory) GetSymlinks() []*SymlinkNode {
+	if x != nil {
+		return x.Symlinks
+	}
+	return nil
+}
+
+// A DirectoryNode represents a directory in a Directory.
+type DirectoryNode struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The (base)name of the directory
+	Name []byte `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// The blake3 hash of a Directory message, serialized in protobuf canonical form.
+	Digest []byte `protobuf:"bytes,2,opt,name=digest,proto3" json:"digest,omitempty"`
+	// Number of child elements in the Directory referred to by `digest`.
+	// Calculated by summing up the numbers of `directories`, `files` and
+	// `symlinks`, and for each directory, its size field. Used for inode
+	// number calculation.
+	// This field is precisely as verifiable as any other Merkle tree edge.
+	// Resolve `digest`, and you can compute it incrementally. Resolve the
+	// entire tree, and you can fully compute it from scratch.
+	// A credulous implementation won't reject an excessive size, but this is
+	// harmless: you'll have some ordinals without nodes. Undersizing is
+	// obvious and easy to reject: you won't have an ordinal for some nodes.
+	Size uint32 `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+}
+
+func (x *DirectoryNode) Reset() {
+	*x = DirectoryNode{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_castore_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DirectoryNode) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DirectoryNode) ProtoMessage() {}
+
+func (x *DirectoryNode) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_protos_castore_proto_msgTypes[1]
+	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 DirectoryNode.ProtoReflect.Descriptor instead.
+func (*DirectoryNode) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_castore_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *DirectoryNode) GetName() []byte {
+	if x != nil {
+		return x.Name
+	}
+	return nil
+}
+
+func (x *DirectoryNode) GetDigest() []byte {
+	if x != nil {
+		return x.Digest
+	}
+	return nil
+}
+
+func (x *DirectoryNode) GetSize() uint32 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+// A FileNode represents a regular or executable file in a Directory.
+type FileNode struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The (base)name of the file
+	Name []byte `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// The blake3 digest of the file contents
+	Digest []byte `protobuf:"bytes,2,opt,name=digest,proto3" json:"digest,omitempty"`
+	// The file content size
+	Size uint32 `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+	// Whether the file is executable
+	Executable bool `protobuf:"varint,4,opt,name=executable,proto3" json:"executable,omitempty"`
+}
+
+func (x *FileNode) Reset() {
+	*x = FileNode{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_castore_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FileNode) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FileNode) ProtoMessage() {}
+
+func (x *FileNode) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_protos_castore_proto_msgTypes[2]
+	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 FileNode.ProtoReflect.Descriptor instead.
+func (*FileNode) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_castore_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *FileNode) GetName() []byte {
+	if x != nil {
+		return x.Name
+	}
+	return nil
+}
+
+func (x *FileNode) GetDigest() []byte {
+	if x != nil {
+		return x.Digest
+	}
+	return nil
+}
+
+func (x *FileNode) GetSize() uint32 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+func (x *FileNode) GetExecutable() bool {
+	if x != nil {
+		return x.Executable
+	}
+	return false
+}
+
+// A SymlinkNode represents a symbolic link in a Directory.
+type SymlinkNode struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The (base)name of the symlink
+	Name []byte `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// The target of the symlink.
+	Target []byte `protobuf:"bytes,2,opt,name=target,proto3" json:"target,omitempty"`
+}
+
+func (x *SymlinkNode) Reset() {
+	*x = SymlinkNode{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_castore_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SymlinkNode) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SymlinkNode) ProtoMessage() {}
+
+func (x *SymlinkNode) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_protos_castore_proto_msgTypes[3]
+	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 SymlinkNode.ProtoReflect.Descriptor instead.
+func (*SymlinkNode) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_castore_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *SymlinkNode) GetName() []byte {
+	if x != nil {
+		return x.Name
+	}
+	return nil
+}
+
+func (x *SymlinkNode) GetTarget() []byte {
+	if x != nil {
+		return x.Target
+	}
+	return nil
+}
+
+// A Node is either a DirectoryNode, FileNode or SymlinkNode.
+type Node struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Node:
+	//
+	//	*Node_Directory
+	//	*Node_File
+	//	*Node_Symlink
+	Node isNode_Node `protobuf_oneof:"node"`
+}
+
+func (x *Node) Reset() {
+	*x = Node{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_tvix_castore_protos_castore_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Node) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Node) ProtoMessage() {}
+
+func (x *Node) ProtoReflect() protoreflect.Message {
+	mi := &file_tvix_castore_protos_castore_proto_msgTypes[4]
+	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 Node.ProtoReflect.Descriptor instead.
+func (*Node) Descriptor() ([]byte, []int) {
+	return file_tvix_castore_protos_castore_proto_rawDescGZIP(), []int{4}
+}
+
+func (m *Node) GetNode() isNode_Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+func (x *Node) GetDirectory() *DirectoryNode {
+	if x, ok := x.GetNode().(*Node_Directory); ok {
+		return x.Directory
+	}
+	return nil
+}
+
+func (x *Node) GetFile() *FileNode {
+	if x, ok := x.GetNode().(*Node_File); ok {
+		return x.File
+	}
+	return nil
+}
+
+func (x *Node) GetSymlink() *SymlinkNode {
+	if x, ok := x.GetNode().(*Node_Symlink); ok {
+		return x.Symlink
+	}
+	return nil
+}
+
+type isNode_Node interface {
+	isNode_Node()
+}
+
+type Node_Directory struct {
+	Directory *DirectoryNode `protobuf:"bytes,1,opt,name=directory,proto3,oneof"`
+}
+
+type Node_File struct {
+	File *FileNode `protobuf:"bytes,2,opt,name=file,proto3,oneof"`
+}
+
+type Node_Symlink struct {
+	Symlink *SymlinkNode `protobuf:"bytes,3,opt,name=symlink,proto3,oneof"`
+}
+
+func (*Node_Directory) isNode_Node() {}
+
+func (*Node_File) isNode_Node() {}
+
+func (*Node_Symlink) isNode_Node() {}
+
+var File_tvix_castore_protos_castore_proto protoreflect.FileDescriptor
+
+var file_tvix_castore_protos_castore_proto_rawDesc = []byte{
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+	0x66, 0x79, 0x69, 0x2f, 0x74, 0x76, 0x69, 0x78, 0x2f, 0x63, 0x61, 0x73, 0x74, 0x6f, 0x72, 0x65,
+	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x3b, 0x63, 0x61, 0x73, 0x74, 0x6f, 0x72, 0x65, 0x76,
+	0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_tvix_castore_protos_castore_proto_rawDescOnce sync.Once
+	file_tvix_castore_protos_castore_proto_rawDescData = file_tvix_castore_protos_castore_proto_rawDesc
+)
+
+func file_tvix_castore_protos_castore_proto_rawDescGZIP() []byte {
+	file_tvix_castore_protos_castore_proto_rawDescOnce.Do(func() {
+		file_tvix_castore_protos_castore_proto_rawDescData = protoimpl.X.CompressGZIP(file_tvix_castore_protos_castore_proto_rawDescData)
+	})
+	return file_tvix_castore_protos_castore_proto_rawDescData
+}
+
+var file_tvix_castore_protos_castore_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_tvix_castore_protos_castore_proto_goTypes = []interface{}{
+	(*Directory)(nil),     // 0: tvix.castore.v1.Directory
+	(*DirectoryNode)(nil), // 1: tvix.castore.v1.DirectoryNode
+	(*FileNode)(nil),      // 2: tvix.castore.v1.FileNode
+	(*SymlinkNode)(nil),   // 3: tvix.castore.v1.SymlinkNode
+	(*Node)(nil),          // 4: tvix.castore.v1.Node
+}
+var file_tvix_castore_protos_castore_proto_depIdxs = []int32{
+	1, // 0: tvix.castore.v1.Directory.directories:type_name -> tvix.castore.v1.DirectoryNode
+	2, // 1: tvix.castore.v1.Directory.files:type_name -> tvix.castore.v1.FileNode
+	3, // 2: tvix.castore.v1.Directory.symlinks:type_name -> tvix.castore.v1.SymlinkNode
+	1, // 3: tvix.castore.v1.Node.directory:type_name -> tvix.castore.v1.DirectoryNode
+	2, // 4: tvix.castore.v1.Node.file:type_name -> tvix.castore.v1.FileNode
+	3, // 5: tvix.castore.v1.Node.symlink:type_name -> tvix.castore.v1.SymlinkNode
+	6, // [6:6] is the sub-list for method output_type
+	6, // [6:6] is the sub-list for method input_type
+	6, // [6:6] is the sub-list for extension type_name
+	6, // [6:6] is the sub-list for extension extendee
+	0, // [0:6] is the sub-list for field type_name
+}
+
+func init() { file_tvix_castore_protos_castore_proto_init() }
+func file_tvix_castore_protos_castore_proto_init() {
+	if File_tvix_castore_protos_castore_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_tvix_castore_protos_castore_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Directory); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_tvix_castore_protos_castore_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DirectoryNode); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_tvix_castore_protos_castore_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FileNode); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_tvix_castore_protos_castore_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SymlinkNode); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_tvix_castore_protos_castore_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Node); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_tvix_castore_protos_castore_proto_msgTypes[4].OneofWrappers = []interface{}{
+		(*Node_Directory)(nil),
+		(*Node_File)(nil),
+		(*Node_Symlink)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_tvix_castore_protos_castore_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   5,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_tvix_castore_protos_castore_proto_goTypes,
+		DependencyIndexes: file_tvix_castore_protos_castore_proto_depIdxs,
+		MessageInfos:      file_tvix_castore_protos_castore_proto_msgTypes,
+	}.Build()
+	File_tvix_castore_protos_castore_proto = out.File
+	file_tvix_castore_protos_castore_proto_rawDesc = nil
+	file_tvix_castore_protos_castore_proto_goTypes = nil
+	file_tvix_castore_protos_castore_proto_depIdxs = nil
+}