[VOL-4293] OpenONU Adapter update for gRPC migration
Change-Id: I05300d3b95b878f44576a99a05f53f52fdc0cda1
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go
new file mode 100644
index 0000000..cebb36c
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go
@@ -0,0 +1,286 @@
+// 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 protodesc
+
+import (
+ "google.golang.org/protobuf/internal/encoding/defval"
+ "google.golang.org/protobuf/internal/errors"
+ "google.golang.org/protobuf/internal/filedesc"
+ "google.golang.org/protobuf/reflect/protoreflect"
+ "google.golang.org/protobuf/reflect/protoregistry"
+
+ "google.golang.org/protobuf/types/descriptorpb"
+)
+
+// resolver is a wrapper around a local registry of declarations within the file
+// and the remote resolver. The remote resolver is restricted to only return
+// descriptors that have been imported.
+type resolver struct {
+ local descsByName
+ remote Resolver
+ imports importSet
+
+ allowUnresolvable bool
+}
+
+func (r *resolver) resolveMessageDependencies(ms []filedesc.Message, mds []*descriptorpb.DescriptorProto) (err error) {
+ for i, md := range mds {
+ m := &ms[i]
+ for j, fd := range md.GetField() {
+ f := &m.L2.Fields.List[j]
+ if f.L1.Cardinality == protoreflect.Required {
+ m.L2.RequiredNumbers.List = append(m.L2.RequiredNumbers.List, f.L1.Number)
+ }
+ if fd.OneofIndex != nil {
+ k := int(fd.GetOneofIndex())
+ if !(0 <= k && k < len(md.GetOneofDecl())) {
+ return errors.New("message field %q has an invalid oneof index: %d", f.FullName(), k)
+ }
+ o := &m.L2.Oneofs.List[k]
+ f.L1.ContainingOneof = o
+ o.L1.Fields.List = append(o.L1.Fields.List, f)
+ }
+
+ if f.L1.Kind, f.L1.Enum, f.L1.Message, err = r.findTarget(f.Kind(), f.Parent().FullName(), partialName(fd.GetTypeName()), f.IsWeak()); err != nil {
+ return errors.New("message field %q cannot resolve type: %v", f.FullName(), err)
+ }
+ if fd.DefaultValue != nil {
+ v, ev, err := unmarshalDefault(fd.GetDefaultValue(), f, r.allowUnresolvable)
+ if err != nil {
+ return errors.New("message field %q has invalid default: %v", f.FullName(), err)
+ }
+ f.L1.Default = filedesc.DefaultValue(v, ev)
+ }
+ }
+
+ if err := r.resolveMessageDependencies(m.L1.Messages.List, md.GetNestedType()); err != nil {
+ return err
+ }
+ if err := r.resolveExtensionDependencies(m.L1.Extensions.List, md.GetExtension()); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (r *resolver) resolveExtensionDependencies(xs []filedesc.Extension, xds []*descriptorpb.FieldDescriptorProto) (err error) {
+ for i, xd := range xds {
+ x := &xs[i]
+ if x.L1.Extendee, err = r.findMessageDescriptor(x.Parent().FullName(), partialName(xd.GetExtendee()), false); err != nil {
+ return errors.New("extension field %q cannot resolve extendee: %v", x.FullName(), err)
+ }
+ if x.L1.Kind, x.L2.Enum, x.L2.Message, err = r.findTarget(x.Kind(), x.Parent().FullName(), partialName(xd.GetTypeName()), false); err != nil {
+ return errors.New("extension field %q cannot resolve type: %v", x.FullName(), err)
+ }
+ if xd.DefaultValue != nil {
+ v, ev, err := unmarshalDefault(xd.GetDefaultValue(), x, r.allowUnresolvable)
+ if err != nil {
+ return errors.New("extension field %q has invalid default: %v", x.FullName(), err)
+ }
+ x.L2.Default = filedesc.DefaultValue(v, ev)
+ }
+ }
+ return nil
+}
+
+func (r *resolver) resolveServiceDependencies(ss []filedesc.Service, sds []*descriptorpb.ServiceDescriptorProto) (err error) {
+ for i, sd := range sds {
+ s := &ss[i]
+ for j, md := range sd.GetMethod() {
+ m := &s.L2.Methods.List[j]
+ m.L1.Input, err = r.findMessageDescriptor(m.Parent().FullName(), partialName(md.GetInputType()), false)
+ if err != nil {
+ return errors.New("service method %q cannot resolve input: %v", m.FullName(), err)
+ }
+ m.L1.Output, err = r.findMessageDescriptor(s.FullName(), partialName(md.GetOutputType()), false)
+ if err != nil {
+ return errors.New("service method %q cannot resolve output: %v", m.FullName(), err)
+ }
+ }
+ }
+ return nil
+}
+
+// findTarget finds an enum or message descriptor if k is an enum, message,
+// group, or unknown. If unknown, and the name could be resolved, the kind
+// returned kind is set based on the type of the resolved descriptor.
+func (r *resolver) findTarget(k protoreflect.Kind, scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.Kind, protoreflect.EnumDescriptor, protoreflect.MessageDescriptor, error) {
+ switch k {
+ case protoreflect.EnumKind:
+ ed, err := r.findEnumDescriptor(scope, ref, isWeak)
+ if err != nil {
+ return 0, nil, nil, err
+ }
+ return k, ed, nil, nil
+ case protoreflect.MessageKind, protoreflect.GroupKind:
+ md, err := r.findMessageDescriptor(scope, ref, isWeak)
+ if err != nil {
+ return 0, nil, nil, err
+ }
+ return k, nil, md, nil
+ case 0:
+ // Handle unspecified kinds (possible with parsers that operate
+ // on a per-file basis without knowledge of dependencies).
+ d, err := r.findDescriptor(scope, ref)
+ if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+ return k, filedesc.PlaceholderEnum(ref.FullName()), filedesc.PlaceholderMessage(ref.FullName()), nil
+ } else if err == protoregistry.NotFound {
+ return 0, nil, nil, errors.New("%q not found", ref.FullName())
+ } else if err != nil {
+ return 0, nil, nil, err
+ }
+ switch d := d.(type) {
+ case protoreflect.EnumDescriptor:
+ return protoreflect.EnumKind, d, nil, nil
+ case protoreflect.MessageDescriptor:
+ return protoreflect.MessageKind, nil, d, nil
+ default:
+ return 0, nil, nil, errors.New("unknown kind")
+ }
+ default:
+ if ref != "" {
+ return 0, nil, nil, errors.New("target name cannot be specified for %v", k)
+ }
+ if !k.IsValid() {
+ return 0, nil, nil, errors.New("invalid kind: %d", k)
+ }
+ return k, nil, nil, nil
+ }
+}
+
+// findDescriptor finds the descriptor by name,
+// which may be a relative name within some scope.
+//
+// Suppose the scope was "fizz.buzz" and the reference was "Foo.Bar",
+// then the following full names are searched:
+// * fizz.buzz.Foo.Bar
+// * fizz.Foo.Bar
+// * Foo.Bar
+func (r *resolver) findDescriptor(scope protoreflect.FullName, ref partialName) (protoreflect.Descriptor, error) {
+ if !ref.IsValid() {
+ return nil, errors.New("invalid name reference: %q", ref)
+ }
+ if ref.IsFull() {
+ scope, ref = "", ref[1:]
+ }
+ var foundButNotImported protoreflect.Descriptor
+ for {
+ // Derive the full name to search.
+ s := protoreflect.FullName(ref)
+ if scope != "" {
+ s = scope + "." + s
+ }
+
+ // Check the current file for the descriptor.
+ if d, ok := r.local[s]; ok {
+ return d, nil
+ }
+
+ // Check the remote registry for the descriptor.
+ d, err := r.remote.FindDescriptorByName(s)
+ if err == nil {
+ // Only allow descriptors covered by one of the imports.
+ if r.imports[d.ParentFile().Path()] {
+ return d, nil
+ }
+ foundButNotImported = d
+ } else if err != protoregistry.NotFound {
+ return nil, errors.Wrap(err, "%q", s)
+ }
+
+ // Continue on at a higher level of scoping.
+ if scope == "" {
+ if d := foundButNotImported; d != nil {
+ return nil, errors.New("resolved %q, but %q is not imported", d.FullName(), d.ParentFile().Path())
+ }
+ return nil, protoregistry.NotFound
+ }
+ scope = scope.Parent()
+ }
+}
+
+func (r *resolver) findEnumDescriptor(scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.EnumDescriptor, error) {
+ d, err := r.findDescriptor(scope, ref)
+ if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+ return filedesc.PlaceholderEnum(ref.FullName()), nil
+ } else if err == protoregistry.NotFound {
+ return nil, errors.New("%q not found", ref.FullName())
+ } else if err != nil {
+ return nil, err
+ }
+ ed, ok := d.(protoreflect.EnumDescriptor)
+ if !ok {
+ return nil, errors.New("resolved %q, but it is not an enum", d.FullName())
+ }
+ return ed, nil
+}
+
+func (r *resolver) findMessageDescriptor(scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.MessageDescriptor, error) {
+ d, err := r.findDescriptor(scope, ref)
+ if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+ return filedesc.PlaceholderMessage(ref.FullName()), nil
+ } else if err == protoregistry.NotFound {
+ return nil, errors.New("%q not found", ref.FullName())
+ } else if err != nil {
+ return nil, err
+ }
+ md, ok := d.(protoreflect.MessageDescriptor)
+ if !ok {
+ return nil, errors.New("resolved %q, but it is not an message", d.FullName())
+ }
+ return md, nil
+}
+
+// partialName is the partial name. A leading dot means that the name is full,
+// otherwise the name is relative to some current scope.
+// See google.protobuf.FieldDescriptorProto.type_name.
+type partialName string
+
+func (s partialName) IsFull() bool {
+ return len(s) > 0 && s[0] == '.'
+}
+
+func (s partialName) IsValid() bool {
+ if s.IsFull() {
+ return protoreflect.FullName(s[1:]).IsValid()
+ }
+ return protoreflect.FullName(s).IsValid()
+}
+
+const unknownPrefix = "*."
+
+// FullName converts the partial name to a full name on a best-effort basis.
+// If relative, it creates an invalid full name, using a "*." prefix
+// to indicate that the start of the full name is unknown.
+func (s partialName) FullName() protoreflect.FullName {
+ if s.IsFull() {
+ return protoreflect.FullName(s[1:])
+ }
+ return protoreflect.FullName(unknownPrefix + s)
+}
+
+func unmarshalDefault(s string, fd protoreflect.FieldDescriptor, allowUnresolvable bool) (protoreflect.Value, protoreflect.EnumValueDescriptor, error) {
+ var evs protoreflect.EnumValueDescriptors
+ if fd.Enum() != nil {
+ evs = fd.Enum().Values()
+ }
+ v, ev, err := defval.Unmarshal(s, fd.Kind(), evs, defval.Descriptor)
+ if err != nil && allowUnresolvable && evs != nil && protoreflect.Name(s).IsValid() {
+ v = protoreflect.ValueOfEnum(0)
+ if evs.Len() > 0 {
+ v = protoreflect.ValueOfEnum(evs.Get(0).Number())
+ }
+ ev = filedesc.PlaceholderEnumValue(fd.Enum().FullName().Parent().Append(protoreflect.Name(s)))
+ } else if err != nil {
+ return v, ev, err
+ }
+ if fd.Syntax() == protoreflect.Proto3 {
+ return v, ev, errors.New("cannot be specified under proto3 semantics")
+ }
+ if fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind || fd.Cardinality() == protoreflect.Repeated {
+ return v, ev, errors.New("cannot be specified on composite types")
+ }
+ return v, ev, nil
+}