/
handler_pubrel.go
63 lines (58 loc) · 1.91 KB
/
handler_pubrel.go
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package broker
import (
"github.com/BAN1ce/skyTree/inner/broker/client"
"github.com/BAN1ce/skyTree/logger"
packet2 "github.com/BAN1ce/skyTree/pkg/packet"
"github.com/eclipse/paho.golang/packets"
"go.uber.org/zap"
)
type PublishRel struct {
}
func NewPublishRel() *PublishRel {
return &PublishRel{}
}
func (p *PublishRel) Handle(broker *Broker, client *client.Client, rawPacket *packets.ControlPacket) {
var (
publishRel = rawPacket.Content.(*packets.Pubrel)
publishComp = packet2.NewPublishComp()
err error
messageID string
)
publishComp.PacketID = publishRel.PacketID
publishPacket, ok := client.QoS2.HandlePubRel(publishRel)
if !ok {
publishRel.ReasonCode = packets.PubackUnspecifiedError
client.WritePacket(publishComp)
return
}
subTopics := broker.subTree.MatchTopic(publishPacket.Topic)
messageID, err = broker.store.StorePublishPacket(subTopics, &packet2.PublishMessage{
ClientID: client.GetID(),
PublishPacket: publishPacket,
})
if err != nil {
logger.Logger.Error("store publish packet error", zap.Error(err))
publishRel.ReasonCode = packets.PubackUnspecifiedError
}
if !publishPacket.Retain {
client.WritePacket(publishComp)
return
}
// if retain is true and payload is not empty, then create retain message id
if len(publishPacket.Payload) > 0 {
for topic := range subTopics {
if err = broker.state.CreateRetainMessageID(topic, messageID); err != nil {
logger.Logger.Error("create retain message id error", zap.Error(err), zap.String("topic", topic))
publishRel.ReasonCode = packets.PubackUnspecifiedError
}
}
} else {
// if retain is true and payload is empty, then delete retain message id
if err = broker.state.DeleteRetainMessageID(publishPacket.Topic); err != nil {
logger.Logger.Error("delete retain message id error", zap.Error(err))
publishRel.ReasonCode = packets.PubackUnspecifiedError
}
}
client.WritePacket(publishComp)
return
}