[VOL-4291] OfAgent changes for gRPC migration
Change-Id: I8da1db6df49d478ef24ec8f9bd719e9692f48a7f
diff --git a/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go b/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go
new file mode 100644
index 0000000..e3fb0b5
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/impl/legacy_export.go
@@ -0,0 +1,92 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+ "encoding/binary"
+ "encoding/json"
+ "hash/crc32"
+ "math"
+ "reflect"
+
+ "google.golang.org/protobuf/internal/errors"
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+ piface "google.golang.org/protobuf/runtime/protoiface"
+)
+
+// These functions exist to support exported APIs in generated protobufs.
+// While these are deprecated, they cannot be removed for compatibility reasons.
+
+// LegacyEnumName returns the name of enums used in legacy code.
+func (Export) LegacyEnumName(ed pref.EnumDescriptor) string {
+ return legacyEnumName(ed)
+}
+
+// LegacyMessageTypeOf returns the protoreflect.MessageType for m,
+// with name used as the message name if necessary.
+func (Export) LegacyMessageTypeOf(m piface.MessageV1, name pref.FullName) pref.MessageType {
+ if mv := (Export{}).protoMessageV2Of(m); mv != nil {
+ return mv.ProtoReflect().Type()
+ }
+ return legacyLoadMessageType(reflect.TypeOf(m), name)
+}
+
+// UnmarshalJSONEnum unmarshals an enum from a JSON-encoded input.
+// The input can either be a string representing the enum value by name,
+// or a number representing the enum number itself.
+func (Export) UnmarshalJSONEnum(ed pref.EnumDescriptor, b []byte) (pref.EnumNumber, error) {
+ if b[0] == '"' {
+ var name pref.Name
+ if err := json.Unmarshal(b, &name); err != nil {
+ return 0, errors.New("invalid input for enum %v: %s", ed.FullName(), b)
+ }
+ ev := ed.Values().ByName(name)
+ if ev == nil {
+ return 0, errors.New("invalid value for enum %v: %s", ed.FullName(), name)
+ }
+ return ev.Number(), nil
+ } else {
+ var num pref.EnumNumber
+ if err := json.Unmarshal(b, &num); err != nil {
+ return 0, errors.New("invalid input for enum %v: %s", ed.FullName(), b)
+ }
+ return num, nil
+ }
+}
+
+// CompressGZIP compresses the input as a GZIP-encoded file.
+// The current implementation does no compression.
+func (Export) CompressGZIP(in []byte) (out []byte) {
+ // RFC 1952, section 2.3.1.
+ var gzipHeader = [10]byte{0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff}
+
+ // RFC 1951, section 3.2.4.
+ var blockHeader [5]byte
+ const maxBlockSize = math.MaxUint16
+ numBlocks := 1 + len(in)/maxBlockSize
+
+ // RFC 1952, section 2.3.1.
+ var gzipFooter [8]byte
+ binary.LittleEndian.PutUint32(gzipFooter[0:4], crc32.ChecksumIEEE(in))
+ binary.LittleEndian.PutUint32(gzipFooter[4:8], uint32(len(in)))
+
+ // Encode the input without compression using raw DEFLATE blocks.
+ out = make([]byte, 0, len(gzipHeader)+len(blockHeader)*numBlocks+len(in)+len(gzipFooter))
+ out = append(out, gzipHeader[:]...)
+ for blockHeader[0] == 0 {
+ blockSize := maxBlockSize
+ if blockSize > len(in) {
+ blockHeader[0] = 0x01 // final bit per RFC 1951, section 3.2.3.
+ blockSize = len(in)
+ }
+ binary.LittleEndian.PutUint16(blockHeader[1:3], uint16(blockSize)^0x0000)
+ binary.LittleEndian.PutUint16(blockHeader[3:5], uint16(blockSize)^0xffff)
+ out = append(out, blockHeader[:]...)
+ out = append(out, in[:blockSize]...)
+ in = in[blockSize:]
+ }
+ out = append(out, gzipFooter[:]...)
+ return out
+}