func sendAnswer(request *pubsub.Event, source string, answer Answer) {
fields := pubsub.Fields{
"source": source,
"target": request.StringField("source"),
}
if answer.Text != "" {
fields["message"] = answer.Text
}
if answer.Json != nil {
fields["json"] = answer.Json
}
remote := request.StringField("remote")
if remote != "" {
fields["remote"] = remote
}
topic := "alert"
reply_to := request.StringField("reply_to")
if reply_to != "" {
topic = reply_to
}
response := pubsub.NewEvent(topic, fields)
Publisher.Emit(response)
}
