func (l *Location) Save(ctx context.Context, req *api.Request, rsp *api.Response) error {
var latlon map[string]float64
err := json.Unmarshal([]byte(extractValue(req.Post["location"])), &latlon)
if err != nil {
return errors.BadRequest(server.Config().Name()+".search", "invalid location")
}
unix, _ := strconv.ParseInt(extractValue(req.Post["timestamp"]), 10, 64)
entity := &proto.Entity{
Id: extractValue(req.Post["id"]),
Type: extractValue(req.Post["type"]),
Location: &proto.Location{
Latitude: latlon["latitude"],
Longitude: latlon["longitude"],
Timestamp: time.Unix(unix, 0).Unix(),
},
}
if len(entity.Id) == 0 {
return errors.BadRequest(server.Config().Name()+".save", "ID cannot be blank")
}
p := client.NewPublication(topic, entity)
if err := client.Publish(ctx, p); err != nil {
log.Errorf("Error publishing to topic %s: %v", topic, err)
return errors.InternalServerError(server.Config().Name()+".save", err.Error())
}
log.Infof("Publishing entity ID %s", entity.Id)
rsp.StatusCode = 200
rsp.Body = `{}`
return nil
}
func pub() {
msg := client.NewPublication("topic.go.micro.srv.example", &example.Message{
Say: "This is a publication",
})
// create context with metadata
ctx := c.WithMetadata(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: %v\n", msg)
}