[VOL-4289] Proto changes for gRPC migration
Change-Id: I317a0a865ccf78d0c37aa229c50d293a3f66c8bb
diff --git a/vendor/google.golang.org/protobuf/runtime/protoimpl/version.go b/vendor/google.golang.org/protobuf/runtime/protoimpl/version.go
new file mode 100644
index 0000000..ff094e1
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/runtime/protoimpl/version.go
@@ -0,0 +1,56 @@
+// 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 protoimpl
+
+import (
+ "google.golang.org/protobuf/internal/version"
+)
+
+const (
+ // MaxVersion is the maximum supported version for generated .pb.go files.
+ // It is always the current version of the module.
+ MaxVersion = version.Minor
+
+ // GenVersion is the runtime version required by generated .pb.go files.
+ // This is incremented when generated code relies on new functionality
+ // in the runtime.
+ GenVersion = 20
+
+ // MinVersion is the minimum supported version for generated .pb.go files.
+ // This is incremented when the runtime drops support for old code.
+ MinVersion = 0
+)
+
+// EnforceVersion is used by code generated by protoc-gen-go
+// to statically enforce minimum and maximum versions of this package.
+// A compilation failure implies either that:
+// * the runtime package is too old and needs to be updated OR
+// * the generated code is too old and needs to be regenerated.
+//
+// The runtime package can be upgraded by running:
+// go get google.golang.org/protobuf
+//
+// The generated code can be regenerated by running:
+// protoc --go_out=${PROTOC_GEN_GO_ARGS} ${PROTO_FILES}
+//
+// Example usage by generated code:
+// const (
+// // Verify that this generated code is sufficiently up-to-date.
+// _ = protoimpl.EnforceVersion(genVersion - protoimpl.MinVersion)
+// // Verify that runtime/protoimpl is sufficiently up-to-date.
+// _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - genVersion)
+// )
+//
+// The genVersion is the current minor version used to generated the code.
+// This compile-time check relies on negative integer overflow of a uint
+// being a compilation failure (guaranteed by the Go specification).
+type EnforceVersion uint
+
+// This enforces the following invariant:
+// MinVersion ≤ GenVersion ≤ MaxVersion
+const (
+ _ = EnforceVersion(GenVersion - MinVersion)
+ _ = EnforceVersion(MaxVersion - GenVersion)
+)