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protoconv.go
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protoconv.go
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// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package protoconv
import (
"fmt"
udpa "github.com/cncf/xds/go/udpa/type/v1"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"istio.io/pkg/log"
)
// MessageToAnyWithError converts from proto message to proto Any
func MessageToAnyWithError(msg proto.Message) (*anypb.Any, error) {
b, err := proto.MarshalOptions{Deterministic: true}.Marshal(msg)
if err != nil {
return nil, err
}
return &anypb.Any{
TypeUrl: "type.googleapis.com/" + string(msg.ProtoReflect().Descriptor().FullName()),
Value: b,
}, nil
}
// MessageToAny converts from proto message to proto Any
func MessageToAny(msg proto.Message) *anypb.Any {
out, err := MessageToAnyWithError(msg)
if err != nil {
log.Error(fmt.Sprintf("error marshaling Any %s: %v", prototext.Format(msg), err))
return nil
}
return out
}
// TypedStruct creates a typedStrcut from the given typeURL
func TypedStruct(typeURL string) *anypb.Any {
return MessageToAny(&udpa.TypedStruct{
TypeUrl: typeURL,
Value: nil,
})
}