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/
message.go
133 lines (115 loc) · 3.03 KB
/
message.go
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// Copyright (C) 2018 MediBloc
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>
package net
import (
"github.com/gogo/protobuf/proto"
peer "github.com/libp2p/go-libp2p-peer"
"github.com/medibloc/go-medibloc/crypto/hash"
netpb "github.com/medibloc/go-medibloc/net/pb"
"github.com/medibloc/go-medibloc/util/byteutils"
)
// RecvMessage is a struct for received message
type RecvMessage struct {
pb *netpb.Message
sender peer.ID
hash string
}
// MessageType returns message type
func (m *RecvMessage) MessageType() string {
return m.pb.Type
}
// MessageFrom returns peer id of message sender
func (m *RecvMessage) MessageFrom() string {
return m.sender.Pretty()
}
// Data returns data
func (m *RecvMessage) Data() []byte {
return m.pb.Data
}
// Hash returns hash
func (m *RecvMessage) Hash() string {
return m.hash
}
func newRecvMessage(bytes []byte, sender peer.ID) (*RecvMessage, error) {
pb := new(netpb.Message)
if err := proto.Unmarshal(bytes, pb); err != nil {
return nil, err
}
return &RecvMessage{
pb: pb,
sender: sender,
hash: byteutils.Bytes2Hex(hash.Sha3256(bytes)),
}, nil
}
// SendMessage is a struct for sending message
type SendMessage struct {
bytes []byte
receiver peer.ID
priority int
hash string
}
// SetReceiver sets receiver
func (m *SendMessage) SetReceiver(receiver peer.ID) {
m.receiver = receiver
}
// Bytes returns bytes
func (m *SendMessage) Bytes() []byte {
return m.bytes
}
// MessageType returns message type
func (m *SendMessage) MessageType() string {
pb := new(netpb.Message)
if err := proto.Unmarshal(m.bytes, pb); err != nil {
return ""
}
return pb.Type
}
// Data returns data
func (m *SendMessage) Data() []byte {
pb := new(netpb.Message)
if err := proto.Unmarshal(m.bytes, pb); err != nil {
return []byte{}
}
return pb.Data
}
// Hash returns hash
func (m *SendMessage) Hash() string {
return m.hash
}
func newSendMessage(chainID uint32, msgType string, data []byte, priority int, receiver peer.ID) (*SendMessage, error) {
pb := &netpb.Message{
ChainId: chainID,
Type: msgType,
Data: data,
}
bytes, err := proto.Marshal(pb)
if err != nil {
return nil, err
}
return &SendMessage{
bytes: bytes,
receiver: receiver,
priority: priority,
hash: byteutils.Bytes2Hex(hash.Sha3256(bytes)),
}, nil
}
func (m *SendMessage) copy() *SendMessage {
return &SendMessage{
bytes: m.bytes,
receiver: m.receiver,
priority: m.priority,
hash: m.hash,
}
}