sugardb/internal/memberlist/broadcast.go

67 lines
1.7 KiB
Go

// Copyright 2024 Kelvin Clement Mwinuka
//
// 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 memberlist
import (
"encoding/json"
"github.com/hashicorp/memberlist"
"log"
)
type BroadcastMessage struct {
NodeMeta
Action string `json:"Action"`
Content []byte `json:"Content"`
ContentHash [16]byte `json:"ContentHash"`
ConnId string `json:"ConnId"`
}
// Invalidates Implements Broadcast interface
func (broadcastMessage *BroadcastMessage) Invalidates(other memberlist.Broadcast) bool {
otherBroadcast, ok := other.(*BroadcastMessage)
if !ok {
return false
}
switch broadcastMessage.Action {
case "RaftJoin":
return broadcastMessage.Action == otherBroadcast.Action &&
broadcastMessage.ServerID == otherBroadcast.ServerID
case "MutateData":
return broadcastMessage.Action == otherBroadcast.Action &&
broadcastMessage.ContentHash == otherBroadcast.ContentHash
default:
return false
}
}
// Message Implements Broadcast interface
func (broadcastMessage *BroadcastMessage) Message() []byte {
msg, err := json.Marshal(broadcastMessage)
if err != nil {
log.Println(err)
return []byte{}
}
return msg
}
// Finished Implements Broadcast interface
func (broadcastMessage *BroadcastMessage) Finished() {
// No-Op
}