/
wrapper.go
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/
wrapper.go
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// Copyright 2018 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 configdump
import (
"bytes"
adminapi "github.com/envoyproxy/go-control-plane/envoy/admin/v2alpha"
"github.com/gogo/protobuf/jsonpb"
)
// Wrapper is a wrapper around the Envoy ConfigDump
// It has extra helper functions for handling any/struct/marshal protobuf pain
type Wrapper struct {
*adminapi.ConfigDump
}
// MarshalJSON is a custom marshaller to handle protobuf pain
func (w *Wrapper) MarshalJSON() ([]byte, error) {
buffer := &bytes.Buffer{}
err := (&jsonpb.Marshaler{}).Marshal(buffer, w)
if err != nil {
return nil, err
}
return buffer.Bytes(), nil
}
// UnmarshalJSON is a custom unmarshaller to handle protobuf pain
func (w *Wrapper) UnmarshalJSON(b []byte) error {
cd := &adminapi.ConfigDump{}
err := (&jsonpb.Unmarshaler{AllowUnknownFields: true}).Unmarshal(bytes.NewReader(b), cd)
*w = Wrapper{cd}
return err
}