// TODO: publish event
func (p *platform) Register(s *registry.Service, opts ...registry.RegisterOption) error {
p.Lock()
defer p.Unlock()
if err := p.opts.Registry.Register(s, opts...); err != nil {
return err
}
service := toProto(s)
hb := &proto.Heartbeat{
Id: s.Nodes[0].Id,
Service: service,
Interval: int64(p.opts.Interval.Seconds()),
Ttl: int64((p.opts.Interval.Seconds()) * 5),
}
p.heartbeats[hb.Id] = hb
// now register
return client.Publish(context.TODO(), client.NewPublication(WatchTopic, &proto.Result{
Action: "update",
Service: service,
Timestamp: time.Now().Unix(),
}))
}
// TODO: publish event
func (p *platform) Deregister(s *registry.Service) error {
p.Lock()
defer p.Unlock()
if err := p.opts.Registry.Deregister(s); err != nil {
return err
}
delete(p.heartbeats, s.Nodes[0].Id)
// now deregister
return client.Publish(context.TODO(), client.NewPublication(WatchTopic, &proto.Result{
Action: "delete",
Service: toProto(s),
Timestamp: time.Now().Unix(),
}))
}
// publishes a message
func pub(i int) {
msg := client.NewPublication("topic.go.micro.srv.example", &example.Message{
Say: fmt.Sprintf("This is a publication %d", i),
})
// create context with metadata
ctx := metadata.NewContext(context.Background(), map[string]string{
"X-User-Id": "john",
"X-From-Id": "script",
})
// publish message
if err := client.Publish(ctx, msg); err != nil {
fmt.Println("pub err: ", err)
return
}
fmt.Printf("Published %d: %v\n", i, msg)
}
// Publish a change
func Publish(ctx context.Context, ch *proto.WatchResponse) error {
req := client.NewPublication(WatchTopic, ch)
return client.Publish(ctx, req)
}