64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package server
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import (
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"encoding/json"
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"fmt"
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"time"
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"github.com/nats-io/nats.go"
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"github.com/nats-io/nkeys"
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)
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const DEFAULT_SUBJECT = "home2rjusnet.notifications"
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type BusNotification struct {
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ID uint32 `json:"id,omitempty"`
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Summary string `json:"summary"`
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Body string `json:"body,omitempty"`
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Timeout time.Duration `json:"timeout,omitempty"`
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}
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type NotificationService struct {
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Subject string
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nc *nats.Conn
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}
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func NewNotificationService(url, nkey string) (*NotificationService, error) {
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kp, err := nkeys.FromSeed([]byte(nkey))
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if err != nil {
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return nil, fmt.Errorf("error creating nkey: %v", err)
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}
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pub, err := kp.PublicKey()
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if err != nil {
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return nil, fmt.Errorf("error getting public key: %v", err)
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}
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opt := nats.Nkey(pub, kp.Sign)
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nc, err := nats.Connect(url, opt)
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if err != nil {
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return nil, fmt.Errorf("error connecting to nats: %v", err)
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}
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return &NotificationService{nc: nc, Subject: DEFAULT_SUBJECT}, nil
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}
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func (n *NotificationService) Notify(msg *BusNotification) error {
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data, err := json.Marshal(msg)
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if err != nil {
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return fmt.Errorf("error marshalling notification: %v", err)
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}
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err = n.nc.Publish(n.Subject, data)
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if err != nil {
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return fmt.Errorf("error publishing notification: %v", err)
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}
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return nil
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}
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func (n *NotificationService) Close() {
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n.nc.Close()
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}
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