61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package valkey
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import (
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"context"
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"encoding/json"
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"strconv"
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"git.tek.govt.hu/dowerx/chat/server/model"
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"git.tek.govt.hu/dowerx/chat/server/util"
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"github.com/valkey-io/valkey-go"
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)
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const CHANNEL_PREFIX string = "channel:"
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type NotificationDAOVK struct {
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vkDAO
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}
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func (d NotificationDAOVK) SendMessage(message model.Message) *util.ChatError {
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data, err := json.Marshal(message)
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if err != nil {
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return util.MakeError(err, util.GENERAL_ERROR)
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}
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cmd := (*d.vk).B().Publish().Channel(CHANNEL_PREFIX + strconv.Itoa(message.Channel)).Message(string(data)).Build()
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return util.MakeError((*d.vk).Do(context.Background(), cmd).Error(), util.DATABASE_QUERY_FAULT)
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}
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func (d NotificationDAOVK) SubscribeToChannel(ctx context.Context, id int) (<-chan model.Message, *util.ChatError) {
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cmd := (*d.vk).B().Subscribe().Channel(CHANNEL_PREFIX + strconv.Itoa(id)).Build()
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var messages chan model.Message = make(chan model.Message)
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err := (*d.vk).Receive(ctx, cmd, func(msg valkey.PubSubMessage) {
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go func() {
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message := model.Message{}
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err := json.Unmarshal([]byte(msg.Message), &message)
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if err != nil {
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return
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}
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messages <- message
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}()
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})
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defer close(messages)
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return messages, util.MakeError(err, util.GENERAL_ERROR)
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}
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func MakeNotificationDAO() (NotificationDAOVK, *util.ChatError) {
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dao := NotificationDAOVK{}
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conn, err := getClient()
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if err != nil {
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return dao, err
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}
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dao.vk = conn
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return dao, nil
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}
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