migrate to go-modules

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

14 files changed, 250 insertions, 525 deletions

diff --git a/vendor/github.com/golang/protobuf/AUTHORS b/vendor/github.com/golang/protobuf/AUTHORS
new file mode 100644
index 000000000..15167cd74
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/github.com/golang/protobuf/CONTRIBUTORS b/vendor/github.com/golang/protobuf/CONTRIBUTORS
new file mode 100644
index 000000000..1c4577e96
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/github.com/golang/protobuf/README.md b/vendor/github.com/golang/protobuf/README.md
deleted file mode 100644
index 61820bed6..000000000
--- a/vendor/github.com/golang/protobuf/README.md
+++ /dev/null
@@ -1,281 +0,0 @@
-# Go support for Protocol Buffers - Google's data interchange format
-
-[![Build Status](https://travis-ci.org/golang/protobuf.svg?branch=master)](https://travis-ci.org/golang/protobuf)
-[![GoDoc](https://godoc.org/github.com/golang/protobuf?status.svg)](https://godoc.org/github.com/golang/protobuf)
-
-Google's data interchange format.
-Copyright 2010 The Go Authors.
-https://github.com/golang/protobuf
-
-This package and the code it generates requires at least Go 1.6.
-
-This software implements Go bindings for protocol buffers.  For
-information about protocol buffers themselves, see
-	https://developers.google.com/protocol-buffers/
-
-## Installation ##
-
-To use this software, you must:
-- Install the standard C++ implementation of protocol buffers from
-	https://developers.google.com/protocol-buffers/
-- Of course, install the Go compiler and tools from
-	https://golang.org/
-  See
-	https://golang.org/doc/install
-  for details or, if you are using gccgo, follow the instructions at
-	https://golang.org/doc/install/gccgo
-- Grab the code from the repository and install the proto package.
-  The simplest way is to run `go get -u github.com/golang/protobuf/protoc-gen-go`.
-  The compiler plugin, protoc-gen-go, will be installed in $GOBIN,
-  defaulting to $GOPATH/bin.  It must be in your $PATH for the protocol
-  compiler, protoc, to find it.
-
-This software has two parts: a 'protocol compiler plugin' that
-generates Go source files that, once compiled, can access and manage
-protocol buffers; and a library that implements run-time support for
-encoding (marshaling), decoding (unmarshaling), and accessing protocol
-buffers.
-
-There is support for gRPC in Go using protocol buffers.
-See the note at the bottom of this file for details.
-
-There are no insertion points in the plugin.
-
-
-## Using protocol buffers with Go ##
-
-Once the software is installed, there are two steps to using it.
-First you must compile the protocol buffer definitions and then import
-them, with the support library, into your program.
-
-To compile the protocol buffer definition, run protoc with the --go_out
-parameter set to the directory you want to output the Go code to.
-
-	protoc --go_out=. *.proto
-
-The generated files will be suffixed .pb.go.  See the Test code below
-for an example using such a file.
-
-## Packages and input paths ##
-
-The protocol buffer language has a concept of "packages" which does not
-correspond well to the Go notion of packages. In generated Go code,
-each source `.proto` file is associated with a single Go package. The
-name and import path for this package is specified with the `go_package`
-proto option:
-
-	option go_package = "github.com/golang/protobuf/ptypes/any";
-
-The protocol buffer compiler will attempt to derive a package name and
-import path if a `go_package` option is not present, but it is
-best to always specify one explicitly.
-
-There is a one-to-one relationship between source `.proto` files and
-generated `.pb.go` files, but any number of `.pb.go` files may be
-contained in the same Go package.
-
-The output name of a generated file is produced by replacing the
-`.proto` suffix with `.pb.go` (e.g., `foo.proto` produces `foo.pb.go`).
-However, the output directory is selected in one of two ways.  Let
-us say we have `inputs/x.proto` with a `go_package` option of
-`github.com/golang/protobuf/p`. The corresponding output file may
-be:
-
-- Relative to the import path:
-
-```shell
-  protoc --go_out=. inputs/x.proto
-  # writes ./github.com/golang/protobuf/p/x.pb.go
-```
-
-  (This can work well with `--go_out=$GOPATH`.)
-
-- Relative to the input file:
-
-```shell
-protoc --go_out=paths=source_relative:. inputs/x.proto
-# generate ./inputs/x.pb.go
-```
-
-## Generated code ##
-
-The package comment for the proto library contains text describing
-the interface provided in Go for protocol buffers. Here is an edited
-version.
-
-The proto package converts data structures to and from the
-wire format of protocol buffers.  It works in concert with the
-Go source code generated for .proto files by the protocol compiler.
-
-A summary of the properties of the protocol buffer interface
-for a protocol buffer variable v:
-
-  - Names are turned from camel_case to CamelCase for export.
-  - There are no methods on v to set fields; just treat
-  	them as structure fields.
-  - There are getters that return a field's value if set,
-	and return the field's default value if unset.
-	The getters work even if the receiver is a nil message.
-  - The zero value for a struct is its correct initialization state.
-	All desired fields must be set before marshaling.
-  - A Reset() method will restore a protobuf struct to its zero state.
-  - Non-repeated fields are pointers to the values; nil means unset.
-	That is, optional or required field int32 f becomes F *int32.
-  - Repeated fields are slices.
-  - Helper functions are available to aid the setting of fields.
-	Helpers for getting values are superseded by the
-	GetFoo methods and their use is deprecated.
-		msg.Foo = proto.String("hello") // set field
-  - Constants are defined to hold the default values of all fields that
-	have them.  They have the form Default_StructName_FieldName.
-	Because the getter methods handle defaulted values,
-	direct use of these constants should be rare.
-  - Enums are given type names and maps from names to values.
-	Enum values are prefixed with the enum's type name. Enum types have
-	a String method, and a Enum method to assist in message construction.
-  - Nested groups and enums have type names prefixed with the name of
-  	the surrounding message type.
-  - Extensions are given descriptor names that start with E_,
-	followed by an underscore-delimited list of the nested messages
-	that contain it (if any) followed by the CamelCased name of the
-	extension field itself.  HasExtension, ClearExtension, GetExtension
-	and SetExtension are functions for manipulating extensions.
-  - Oneof field sets are given a single field in their message,
-	with distinguished wrapper types for each possible field value.
-  - Marshal and Unmarshal are functions to encode and decode the wire format.
-
-When the .proto file specifies `syntax="proto3"`, there are some differences:
-
-  - Non-repeated fields of non-message type are values instead of pointers.
-  - Enum types do not get an Enum method.
-
-Consider file test.proto, containing
-
-```proto
-	syntax = "proto2";
-	package example;
-
-	enum FOO { X = 17; };
-
-	message Test {
-	  required string label = 1;
-	  optional int32 type = 2 [default=77];
-	  repeated int64 reps = 3;
-	}
-```
-
-To create and play with a Test object from the example package,
-
-```go
-	package main
-
-	import (
-		"log"
-
-		"github.com/golang/protobuf/proto"
-		"path/to/example"
-	)
-
-	func main() {
-		test := &example.Test{
-			Label: proto.String("hello"),
-			Type:  proto.Int32(17),
-			Reps:  []int64{1, 2, 3},
-		}
-		data, err := proto.Marshal(test)
-		if err != nil {
-			log.Fatal("marshaling error: ", err)
-		}
-		newTest := &example.Test{}
-		err = proto.Unmarshal(data, newTest)
-		if err != nil {
-			log.Fatal("unmarshaling error: ", err)
-		}
-		// Now test and newTest contain the same data.
-		if test.GetLabel() != newTest.GetLabel() {
-			log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
-		}
-		// etc.
-	}
-```
-
-## Parameters ##
-
-To pass extra parameters to the plugin, use a comma-separated
-parameter list separated from the output directory by a colon:
-
-	protoc --go_out=plugins=grpc,import_path=mypackage:. *.proto
-
-- `paths=(import | source_relative)` - specifies how the paths of
-  generated files are structured. See the "Packages and imports paths"
-  section above. The default is `import`.
-- `plugins=plugin1+plugin2` - specifies the list of sub-plugins to
-  load. The only plugin in this repo is `grpc`.
-- `Mfoo/bar.proto=quux/shme` - declares that foo/bar.proto is
-  associated with Go package quux/shme.  This is subject to the
-  import_prefix parameter.
-
-The following parameters are deprecated and should not be used:
-
-- `import_prefix=xxx` - a prefix that is added onto the beginning of
-  all imports.
-- `import_path=foo/bar` - used as the package if no input files
-  declare `go_package`. If it contains slashes, everything up to the
-  rightmost slash is ignored.
-
-## gRPC Support ##
-
-If a proto file specifies RPC services, protoc-gen-go can be instructed to
-generate code compatible with gRPC (http://www.grpc.io/). To do this, pass
-the `plugins` parameter to protoc-gen-go; the usual way is to insert it into
-the --go_out argument to protoc:
-
-	protoc --go_out=plugins=grpc:. *.proto
-
-## Compatibility ##
-
-The library and the generated code are expected to be stable over time.
-However, we reserve the right to make breaking changes without notice for the
-following reasons:
-
-- Security. A security issue in the specification or implementation may come to
-  light whose resolution requires breaking compatibility. We reserve the right
-  to address such security issues.
-- Unspecified behavior.  There are some aspects of the Protocol Buffers
-  specification that are undefined.  Programs that depend on such unspecified
-  behavior may break in future releases.
-- Specification errors or changes. If it becomes necessary to address an
-  inconsistency, incompleteness, or change in the Protocol Buffers
-  specification, resolving the issue could affect the meaning or legality of
-  existing programs.  We reserve the right to address such issues, including
-  updating the implementations.
-- Bugs.  If the library has a bug that violates the specification, a program
-  that depends on the buggy behavior may break if the bug is fixed.  We reserve
-  the right to fix such bugs.
-- Adding methods or fields to generated structs.  These may conflict with field
-  names that already exist in a schema, causing applications to break.  When the
-  code generator encounters a field in the schema that would collide with a
-  generated field or method name, the code generator will append an underscore
-  to the generated field or method name.
-- Adding, removing, or changing methods or fields in generated structs that
-  start with `XXX`.  These parts of the generated code are exported out of
-  necessity, but should not be considered part of the public API.
-- Adding, removing, or changing unexported symbols in generated code.
-
-Any breaking changes outside of these will be announced 6 months in advance to
-protobuf@googlegroups.com.
-
-You should, whenever possible, use generated code created by the `protoc-gen-go`
-tool built at the same commit as the `proto` package.  The `proto` package
-declares package-level constants in the form `ProtoPackageIsVersionX`.
-Application code and generated code may depend on one of these constants to
-ensure that compilation will fail if the available version of the proto library
-is too old.  Whenever we make a change to the generated code that requires newer
-library support, in the same commit we will increment the version number of the
-generated code and declare a new package-level constant whose name incorporates
-the latest version number.  Removing a compatibility constant is considered a
-breaking change and would be subject to the announcement policy stated above.
-
-The `protoc-gen-go/generator` package exposes a plugin interface,
-which is used by the gRPC code generation. This interface is not
-supported and is subject to incompatible changes without notice.
diff --git a/vendor/github.com/golang/protobuf/proto/decode.go b/vendor/github.com/golang/protobuf/proto/decode.go
index d9aa3c42d..63b0f08be 100644
--- a/vendor/github.com/golang/protobuf/proto/decode.go
+++ b/vendor/github.com/golang/protobuf/proto/decode.go
@@ -186,7 +186,6 @@ func (p *Buffer) DecodeVarint() (x uint64, err error) {
 	if b&0x80 == 0 {
 		goto done
 	}
-	// x -= 0x80 << 63 // Always zero.
 
 	return 0, errOverflow
 
diff --git a/vendor/github.com/golang/protobuf/proto/deprecated.go b/vendor/github.com/golang/protobuf/proto/deprecated.go
new file mode 100644
index 000000000..35b882c09
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/deprecated.go
@@ -0,0 +1,63 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2018 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import "errors"
+
+// Deprecated: do not use.
+type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
+
+// Deprecated: do not use.
+func GetStats() Stats { return Stats{} }
+
+// Deprecated: do not use.
+func MarshalMessageSet(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSet([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func MarshalMessageSetJSON(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSetJSON([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func RegisterMessageSetType(Message, int32, string) {}
diff --git a/vendor/github.com/golang/protobuf/proto/equal.go b/vendor/github.com/golang/protobuf/proto/equal.go
index d4db5a1c1..f9b6e41b3 100644
--- a/vendor/github.com/golang/protobuf/proto/equal.go
+++ b/vendor/github.com/golang/protobuf/proto/equal.go
@@ -246,7 +246,8 @@ func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
 			return false
 		}
 
-		m1, m2 := e1.value, e2.value
+		m1 := extensionAsLegacyType(e1.value)
+		m2 := extensionAsLegacyType(e2.value)
 
 		if m1 == nil && m2 == nil {
 			// Both have only encoded form.
diff --git a/vendor/github.com/golang/protobuf/proto/extensions.go b/vendor/github.com/golang/protobuf/proto/extensions.go
index 816a3b9d6..fa88add30 100644
--- a/vendor/github.com/golang/protobuf/proto/extensions.go
+++ b/vendor/github.com/golang/protobuf/proto/extensions.go
@@ -185,9 +185,25 @@ type Extension struct {
 	// extension will have only enc set. When such an extension is
 	// accessed using GetExtension (or GetExtensions) desc and value
 	// will be set.
-	desc  *ExtensionDesc
+	desc *ExtensionDesc
+
+	// value is a concrete value for the extension field. Let the type of
+	// desc.ExtensionType be the "API type" and the type of Extension.value
+	// be the "storage type". The API type and storage type are the same except:
+	//	* For scalars (except []byte), the API type uses *T,
+	//	while the storage type uses T.
+	//	* For repeated fields, the API type uses []T, while the storage type
+	//	uses *[]T.
+	//
+	// The reason for the divergence is so that the storage type more naturally
+	// matches what is expected of when retrieving the values through the
+	// protobuf reflection APIs.
+	//
+	// The value may only be populated if desc is also populated.
 	value interface{}
-	enc   []byte
+
+	// enc is the raw bytes for the extension field.
+	enc []byte
 }
 
 // SetRawExtension is for testing only.
@@ -334,7 +350,7 @@ func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
 			// descriptors with the same field number.
 			return nil, errors.New("proto: descriptor conflict")
 		}
-		return e.value, nil
+		return extensionAsLegacyType(e.value), nil
 	}
 
 	if extension.ExtensionType == nil {
@@ -349,11 +365,11 @@ func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
 
 	// Remember the decoded version and drop the encoded version.
 	// That way it is safe to mutate what we return.
-	e.value = v
+	e.value = extensionAsStorageType(v)
 	e.desc = extension
 	e.enc = nil
 	emap[extension.Field] = e
-	return e.value, nil
+	return extensionAsLegacyType(e.value), nil
 }
 
 // defaultExtensionValue returns the default value for extension.
@@ -488,7 +504,7 @@ func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error
 	}
 	typ := reflect.TypeOf(extension.ExtensionType)
 	if typ != reflect.TypeOf(value) {
-		return errors.New("proto: bad extension value type")
+		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
 	}
 	// nil extension values need to be caught early, because the
 	// encoder can't distinguish an ErrNil due to a nil extension
@@ -500,7 +516,7 @@ func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error
 	}
 
 	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: value}
+	extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
 	return nil
 }
 
@@ -541,3 +557,51 @@ func RegisterExtension(desc *ExtensionDesc) {
 func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
 	return extensionMaps[reflect.TypeOf(pb).Elem()]
 }
+
+// extensionAsLegacyType converts an value in the storage type as the API type.
+// See Extension.value.
+func extensionAsLegacyType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+		// Represent primitive types as a pointer to the value.
+		rv2 := reflect.New(rv.Type())
+		rv2.Elem().Set(rv)
+		v = rv2.Interface()
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Slice:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	}
+	return v
+}
+
+// extensionAsStorageType converts an value in the API type as the storage type.
+// See Extension.value.
+func extensionAsStorageType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	case reflect.Slice:
+		// Represent slice types as a pointer to the value.
+		if rv.Type().Elem().Kind() != reflect.Uint8 {
+			rv2 := reflect.New(rv.Type())
+			rv2.Elem().Set(rv)
+			v = rv2.Interface()
+		}
+	}
+	return v
+}
diff --git a/vendor/github.com/golang/protobuf/proto/lib.go b/vendor/github.com/golang/protobuf/proto/lib.go
index 75565cc6d..fdd328bb7 100644
--- a/vendor/github.com/golang/protobuf/proto/lib.go
+++ b/vendor/github.com/golang/protobuf/proto/lib.go
@@ -341,26 +341,6 @@ type Message interface {
 	ProtoMessage()
 }
 
-// Stats records allocation details about the protocol buffer encoders
-// and decoders.  Useful for tuning the library itself.
-type Stats struct {
-	Emalloc uint64 // mallocs in encode
-	Dmalloc uint64 // mallocs in decode
-	Encode  uint64 // number of encodes
-	Decode  uint64 // number of decodes
-	Chit    uint64 // number of cache hits
-	Cmiss   uint64 // number of cache misses
-	Size    uint64 // number of sizes
-}
-
-// Set to true to enable stats collection.
-const collectStats = false
-
-var stats Stats
-
-// GetStats returns a copy of the global Stats structure.
-func GetStats() Stats { return stats }
-
 // A Buffer is a buffer manager for marshaling and unmarshaling
 // protocol buffers.  It may be reused between invocations to
 // reduce memory usage.  It is not necessary to use a Buffer;
@@ -960,13 +940,19 @@ func isProto3Zero(v reflect.Value) bool {
 	return false
 }
 
-// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion2 = true
+const (
+	// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion3 = true
+
+	// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion2 = true
 
-// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion1 = true
+	// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion1 = true
+)
 
 // InternalMessageInfo is a type used internally by generated .pb.go files.
 // This type is not intended to be used by non-generated code.
diff --git a/vendor/github.com/golang/protobuf/proto/message_set.go b/vendor/github.com/golang/protobuf/proto/message_set.go
index 3b6ca41d5..f48a75676 100644
--- a/vendor/github.com/golang/protobuf/proto/message_set.go
+++ b/vendor/github.com/golang/protobuf/proto/message_set.go
@@ -36,13 +36,7 @@ package proto
  */
 
 import (
-	"bytes"
-	"encoding/json"
 	"errors"
-	"fmt"
-	"reflect"
-	"sort"
-	"sync"
 )
 
 // errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
@@ -145,46 +139,9 @@ func skipVarint(buf []byte) []byte {
 	return buf[i+1:]
 }
 
-// MarshalMessageSet encodes the extension map represented by m in the message set wire format.
-// It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSet(exts interface{}) ([]byte, error) {
-	return marshalMessageSet(exts, false)
-}
-
-// marshaMessageSet implements above function, with the opt to turn on / off deterministic during Marshal.
-func marshalMessageSet(exts interface{}, deterministic bool) ([]byte, error) {
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var u marshalInfo
-		siz := u.sizeMessageSet(exts)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, exts, deterministic)
-
-	case map[int32]Extension:
-		// This is an old-style extension map.
-		// Wrap it in a new-style XXX_InternalExtensions.
-		ie := XXX_InternalExtensions{
-			p: &struct {
-				mu           sync.Mutex
-				extensionMap map[int32]Extension
-			}{
-				extensionMap: exts,
-			},
-		}
-
-		var u marshalInfo
-		siz := u.sizeMessageSet(&ie)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, &ie, deterministic)
-
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-}
-
-// UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
+// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
 // It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSet(buf []byte, exts interface{}) error {
+func unmarshalMessageSet(buf []byte, exts interface{}) error {
 	var m map[int32]Extension
 	switch exts := exts.(type) {
 	case *XXX_InternalExtensions:
@@ -222,93 +179,3 @@ func UnmarshalMessageSet(buf []byte, exts interface{}) error {
 	}
 	return nil
 }
-
-// MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
-// It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var mu sync.Locker
-		m, mu = exts.extensionsRead()
-		if m != nil {
-			// Keep the extensions map locked until we're done marshaling to prevent
-			// races between marshaling and unmarshaling the lazily-{en,de}coded
-			// values.
-			mu.Lock()
-			defer mu.Unlock()
-		}
-	case map[int32]Extension:
-		m = exts
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-	var b bytes.Buffer
-	b.WriteByte('{')
-
-	// Process the map in key order for deterministic output.
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids)) // int32Slice defined in text.go
-
-	for i, id := range ids {
-		ext := m[id]
-		msd, ok := messageSetMap[id]
-		if !ok {
-			// Unknown type; we can't render it, so skip it.
-			continue
-		}
-
-		if i > 0 && b.Len() > 1 {
-			b.WriteByte(',')
-		}
-
-		fmt.Fprintf(&b, `"[%s]":`, msd.name)
-
-		x := ext.value
-		if x == nil {
-			x = reflect.New(msd.t.Elem()).Interface()
-			if err := Unmarshal(ext.enc, x.(Message)); err != nil {
-				return nil, err
-			}
-		}
-		d, err := json.Marshal(x)
-		if err != nil {
-			return nil, err
-		}
-		b.Write(d)
-	}
-	b.WriteByte('}')
-	return b.Bytes(), nil
-}
-
-// UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
-// It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
-	// Common-case fast path.
-	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
-		return nil
-	}
-
-	// This is fairly tricky, and it's not clear that it is needed.
-	return errors.New("TODO: UnmarshalMessageSetJSON not yet implemented")
-}
-
-// A global registry of types that can be used in a MessageSet.
-
-var messageSetMap = make(map[int32]messageSetDesc)
-
-type messageSetDesc struct {
-	t    reflect.Type // pointer to struct
-	name string
-}
-
-// RegisterMessageSetType is called from the generated code.
-func RegisterMessageSetType(m Message, fieldNum int32, name string) {
-	messageSetMap[fieldNum] = messageSetDesc{
-		t:    reflect.TypeOf(m),
-		name: name,
-	}
-}
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_reflect.go b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
index b6cad9083..94fa9194a 100644
--- a/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
+++ b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
@@ -79,10 +79,13 @@ func toPointer(i *Message) pointer {
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
 	v := reflect.ValueOf(*i)
 	u := reflect.New(v.Type())
 	u.Elem().Set(v)
+	if deref {
+		u = u.Elem()
+	}
 	return pointer{v: u}
 }
 
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
index d55a335d9..dbfffe071 100644
--- a/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
+++ b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
@@ -85,16 +85,21 @@ func toPointer(i *Message) pointer {
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
 	// Super-tricky - read or get the address of data word of interface value.
 	if isptr {
 		// The interface is of pointer type, thus it is a direct interface.
 		// The data word is the pointer data itself. We take its address.
-		return pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+		p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+	} else {
+		// The interface is not of pointer type. The data word is the pointer
+		// to the data.
+		p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
 	}
-	// The interface is not of pointer type. The data word is the pointer
-	// to the data.
-	return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
+	if deref {
+		p.p = *(*unsafe.Pointer)(p.p)
+	}
+	return p
 }
 
 // valToPointer converts v to a pointer. v must be of pointer type.
diff --git a/vendor/github.com/golang/protobuf/proto/properties.go b/vendor/github.com/golang/protobuf/proto/properties.go
index 50b99b83a..79668ff5c 100644
--- a/vendor/github.com/golang/protobuf/proto/properties.go
+++ b/vendor/github.com/golang/protobuf/proto/properties.go
@@ -334,9 +334,6 @@ func GetProperties(t reflect.Type) *StructProperties {
 	sprop, ok := propertiesMap[t]
 	propertiesMu.RUnlock()
 	if ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return sprop
 	}
 
@@ -346,17 +343,20 @@ func GetProperties(t reflect.Type) *StructProperties {
 	return sprop
 }
 
+type (
+	oneofFuncsIface interface {
+		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	}
+	oneofWrappersIface interface {
+		XXX_OneofWrappers() []interface{}
+	}
+)
+
 // getPropertiesLocked requires that propertiesMu is held.
 func getPropertiesLocked(t reflect.Type) *StructProperties {
 	if prop, ok := propertiesMap[t]; ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return prop
 	}
-	if collectStats {
-		stats.Cmiss++
-	}
 
 	prop := new(StructProperties)
 	// in case of recursive protos, fill this in now.
@@ -391,13 +391,14 @@ func getPropertiesLocked(t reflect.Type) *StructProperties {
 	// Re-order prop.order.
 	sort.Sort(prop)
 
-	type oneofMessage interface {
-		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	var oots []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oots = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oots = m.XXX_OneofWrappers()
 	}
-	if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
-		var oots []interface{}
-		_, _, _, oots = om.XXX_OneofFuncs()
-
+	if len(oots) > 0 {
 		// Interpret oneof metadata.
 		prop.OneofTypes = make(map[string]*OneofProperties)
 		for _, oot := range oots {
diff --git a/vendor/github.com/golang/protobuf/proto/table_marshal.go b/vendor/github.com/golang/protobuf/proto/table_marshal.go
index b16794496..5cb11fa95 100644
--- a/vendor/github.com/golang/protobuf/proto/table_marshal.go
+++ b/vendor/github.com/golang/protobuf/proto/table_marshal.go
@@ -87,6 +87,7 @@ type marshalElemInfo struct {
 	sizer     sizer
 	marshaler marshaler
 	isptr     bool // elem is pointer typed, thus interface of this type is a direct interface (extension only)
+	deref     bool // dereference the pointer before operating on it; implies isptr
 }
 
 var (
@@ -320,8 +321,11 @@ func (u *marshalInfo) computeMarshalInfo() {
 
 	// get oneof implementers
 	var oneofImplementers []interface{}
-	if m, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
 		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
 	}
 
 	n := t.NumField()
@@ -407,13 +411,22 @@ func (u *marshalInfo) getExtElemInfo(desc *ExtensionDesc) *marshalElemInfo {
 		panic("tag is not an integer")
 	}
 	wt := wiretype(tags[0])
+	if t.Kind() == reflect.Ptr && t.Elem().Kind() != reflect.Struct {
+		t = t.Elem()
+	}
 	sizer, marshaler := typeMarshaler(t, tags, false, false)
+	var deref bool
+	if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 {
+		t = reflect.PtrTo(t)
+		deref = true
+	}
 	e = &marshalElemInfo{
 		wiretag:   uint64(tag)<<3 | wt,
 		tagsize:   SizeVarint(uint64(tag) << 3),
 		sizer:     sizer,
 		marshaler: marshaler,
 		isptr:     t.Kind() == reflect.Ptr,
+		deref:     deref,
 	}
 
 	// update cache
@@ -448,7 +461,7 @@ func (fi *marshalFieldInfo) computeMarshalFieldInfo(f *reflect.StructField) {
 
 func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofImplementers []interface{}) {
 	fi.field = toField(f)
-	fi.wiretag = 1<<31 - 1 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
+	fi.wiretag = math.MaxInt32 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
 	fi.isPointer = true
 	fi.sizer, fi.marshaler = makeOneOfMarshaler(fi, f)
 	fi.oneofElems = make(map[reflect.Type]*marshalElemInfo)
@@ -476,10 +489,6 @@ func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofI
 	}
 }
 
-type oneofMessage interface {
-	XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
-}
-
 // wiretype returns the wire encoding of the type.
 func wiretype(encoding string) uint64 {
 	switch encoding {
@@ -2310,8 +2319,8 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 			for _, k := range m.MapKeys() {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)             // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr)          // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)      // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false)   // pointer to value
 				siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				n += siz + SizeVarint(uint64(siz)) + tagsize
 			}
@@ -2329,8 +2338,8 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 			for _, k := range keys {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)    // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)    // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false) // pointer to value
 				b = appendVarint(b, tag)
 				siz := keySizer(kaddr, 1) + valCachedSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				b = appendVarint(b, uint64(siz))
@@ -2399,7 +2408,7 @@ func (u *marshalInfo) sizeExtensions(ext *XXX_InternalExtensions) int {
 		// the last time this function was called.
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	mu.Unlock()
@@ -2434,7 +2443,7 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2465,7 +2474,7 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err
@@ -2510,7 +2519,7 @@ func (u *marshalInfo) sizeMessageSet(ext *XXX_InternalExtensions) int {
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, 1) // message, tag = 3 (size=1)
 	}
 	mu.Unlock()
@@ -2553,7 +2562,7 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2591,7 +2600,7 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 		b = append(b, 1<<3|WireEndGroup)
 		if !nerr.Merge(err) {
@@ -2621,7 +2630,7 @@ func (u *marshalInfo) sizeV1Extensions(m map[int32]Extension) int {
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	return n
@@ -2656,7 +2665,7 @@ func (u *marshalInfo) appendV1Extensions(b []byte, m map[int32]Extension, determ
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err
diff --git a/vendor/github.com/golang/protobuf/proto/table_unmarshal.go b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
index ebf1caa56..acee2fc52 100644
--- a/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
+++ b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
@@ -136,7 +136,7 @@ func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
 		u.computeUnmarshalInfo()
 	}
 	if u.isMessageSet {
-		return UnmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
+		return unmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
 	}
 	var reqMask uint64 // bitmask of required fields we've seen.
 	var errLater error
@@ -362,46 +362,48 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 	}
 
 	// Find any types associated with oneof fields.
-	// TODO: XXX_OneofFuncs returns more info than we need.  Get rid of some of it?
-	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("XXX_OneofFuncs")
-	if fn.IsValid() {
-		res := fn.Call(nil)[3] // last return value from XXX_OneofFuncs: []interface{}
-		for i := res.Len() - 1; i >= 0; i-- {
-			v := res.Index(i)                             // interface{}
-			tptr := reflect.ValueOf(v.Interface()).Type() // *Msg_X
-			typ := tptr.Elem()                            // Msg_X
-
-			f := typ.Field(0) // oneof implementers have one field
-			baseUnmarshal := fieldUnmarshaler(&f)
-			tags := strings.Split(f.Tag.Get("protobuf"), ",")
-			fieldNum, err := strconv.Atoi(tags[1])
-			if err != nil {
-				panic("protobuf tag field not an integer: " + tags[1])
-			}
-			var name string
-			for _, tag := range tags {
-				if strings.HasPrefix(tag, "name=") {
-					name = strings.TrimPrefix(tag, "name=")
-					break
-				}
+	var oneofImplementers []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
+	}
+	for _, v := range oneofImplementers {
+		tptr := reflect.TypeOf(v) // *Msg_X
+		typ := tptr.Elem()        // Msg_X
+
+		f := typ.Field(0) // oneof implementers have one field
+		baseUnmarshal := fieldUnmarshaler(&f)
+		tags := strings.Split(f.Tag.Get("protobuf"), ",")
+		fieldNum, err := strconv.Atoi(tags[1])
+		if err != nil {
+			panic("protobuf tag field not an integer: " + tags[1])
+		}
+		var name string
+		for _, tag := range tags {
+			if strings.HasPrefix(tag, "name=") {
+				name = strings.TrimPrefix(tag, "name=")
+				break
 			}
+		}
 
-			// Find the oneof field that this struct implements.
-			// Might take O(n^2) to process all of the oneofs, but who cares.
-			for _, of := range oneofFields {
-				if tptr.Implements(of.ityp) {
-					// We have found the corresponding interface for this struct.
-					// That lets us know where this struct should be stored
-					// when we encounter it during unmarshaling.
-					unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
-					u.setTag(fieldNum, of.field, unmarshal, 0, name)
-				}
+		// Find the oneof field that this struct implements.
+		// Might take O(n^2) to process all of the oneofs, but who cares.
+		for _, of := range oneofFields {
+			if tptr.Implements(of.ityp) {
+				// We have found the corresponding interface for this struct.
+				// That lets us know where this struct should be stored
+				// when we encounter it during unmarshaling.
+				unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
+				u.setTag(fieldNum, of.field, unmarshal, 0, name)
 			}
 		}
+
 	}
 
 	// Get extension ranges, if any.
-	fn = reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
+	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
 	if fn.IsValid() {
 		if !u.extensions.IsValid() && !u.oldExtensions.IsValid() {
 			panic("a message with extensions, but no extensions field in " + t.Name())
@@ -1948,7 +1950,7 @@ func encodeVarint(b []byte, x uint64) []byte {
 // If there is an error, it returns 0,0.
 func decodeVarint(b []byte) (uint64, int) {
 	var x, y uint64
-	if len(b) <= 0 {
+	if len(b) == 0 {
 		goto bad
 	}
 	x = uint64(b[0])