/
common.go
88 lines (72 loc) · 2.56 KB
/
common.go
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/*
Copyright IBM Corp. 2017 All Rights Reserved.
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 common
import (
"fmt"
"github.com/golang/protobuf/proto"
)
func (e *Envelope) StaticallyOpaqueFields() []string {
return []string{"payload"}
}
func (e *Envelope) StaticallyOpaqueFieldProto(name string) (proto.Message, error) {
if name != e.StaticallyOpaqueFields()[0] {
return nil, fmt.Errorf("not a marshaled field: %s", name)
}
return &Payload{}, nil
}
func (p *Payload) VariablyOpaqueFields() []string {
return []string{"data"}
}
func (p *Payload) VariablyOpaqueFieldProto(name string) (proto.Message, error) {
if name != p.VariablyOpaqueFields()[0] {
return nil, fmt.Errorf("not a marshaled field: %s", name)
}
if p.Header == nil {
return nil, fmt.Errorf("cannot determine payload type when header is missing")
}
ch := &ChannelHeader{}
if err := proto.Unmarshal(p.Header.ChannelHeader, ch); err != nil {
return nil, fmt.Errorf("corrupt channel header: %s", err)
}
switch ch.Type {
case int32(HeaderType_CONFIG):
return &ConfigEnvelope{}, nil
case int32(HeaderType_CONFIG_UPDATE):
return &ConfigUpdateEnvelope{}, nil
// TODO implement the other well known types, particularly endorser txs
default:
return nil, fmt.Errorf("decoding type %v is unimplemented", ch.Type)
}
}
func (h *Header) StaticallyOpaqueFields() []string {
return []string{"channel_header", "signature_header"}
}
func (h *Header) StaticallyOpaqueFieldProto(name string) (proto.Message, error) {
switch name {
case h.StaticallyOpaqueFields()[0]: // channel_header
return &ChannelHeader{}, nil
case h.StaticallyOpaqueFields()[1]: // signature_header
return &SignatureHeader{}, nil
default:
return nil, fmt.Errorf("unknown header field: %s", name)
}
}
func (bd *BlockData) StaticallyOpaqueSliceFields() []string {
return []string{"data"}
}
func (bd *BlockData) StaticallyOpaqueSliceFieldProto(fieldName string, index int) (proto.Message, error) {
if fieldName != bd.StaticallyOpaqueSliceFields()[0] {
return nil, fmt.Errorf("not an opaque slice field: %s", fieldName)
}
return &Envelope{}, nil
}