/
pusher.go
85 lines (74 loc) · 2.17 KB
/
pusher.go
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// Copyright 2022-2023 Tigris Data, Inc.
//
// 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 realtime
import (
"github.com/gorilla/websocket"
"github.com/rs/zerolog/log"
api "github.com/tigrisdata/tigris/api/server/v1"
"github.com/tigrisdata/tigris/internal"
"github.com/tigrisdata/tigris/store/cache"
)
type DevicePusher struct {
channel string
sessionId string
socketId string
encType internal.UserDataEncType
connection *websocket.Conn
}
func NewDevicePusher(session *Session, channel string) *DevicePusher {
return &DevicePusher{
channel: channel,
sessionId: session.id,
socketId: session.socketId,
encType: session.encType,
connection: session.conn,
}
}
func (pusher *DevicePusher) Watch(events *cache.StreamMessages, err error) ([]string, error) {
if err != nil {
return nil, err
}
processed := make([]string, len(events.Messages))
for i, m := range events.Messages {
data, err := events.Decode(m)
if err != nil {
continue
}
md, err := DecodeStreamMD(data.Md)
if err != nil {
continue
}
processed[i] = m.ID
if md.ClientId == pusher.sessionId {
continue
}
pusher.sendMessage(m.ID, md, data)
}
return processed, nil
}
func (pusher *DevicePusher) sendMessage(msgId string, md *StreamMessageMD, data *internal.StreamData) {
rawData, err := SanitizeUserData(pusher.encType, data)
if err != nil {
log.Err(err).Msgf("sanitizing user data failed")
return
}
message := &api.MessageEvent{
Id: msgId,
Name: md.EventName,
Channel: pusher.channel,
Data: rawData,
}
err = SendReply(pusher.connection, pusher.encType, api.EventType_message, message)
log.Err(err).Msgf("failed to push message")
}