package alert import ( "fmt" "time" "github.com/sfreiberg/gotwilio" ) var lastAlertUnix int64 = 0 var alertCountSince int = 0 // Sends a critical alert message to administrators. func Alert(message string) { log.Error(" ALERT \n" + message) now := time.Now().Unix() if now-lastAlertUnix > int64(config.GetInt("alert_min_interval")) { message = fmt.Sprintf("%v:%v", config.GetString("chain_id"), message) if alertCountSince > 0 { message = fmt.Sprintf("%v (+%v more since)", message, alertCountSince) alertCountSince = 0 } if len(config.GetString("alert_twilio_sid")) > 0 { go sendTwilio(message) } if len(config.GetString("alert_email_recipients")) > 0 { go sendEmail(message) } } else { alertCountSince++ } } func sendTwilio(message string) { defer func() { if err := recover(); err != nil { log.Error("sendTwilio error", "error", err) } }() if len(message) > 50 { message = message[:50] } twilio := gotwilio.NewTwilioClient(config.GetString("alert_twilio_sid"), config.GetString("alert_twilio_token")) res, exp, err := twilio.SendSMS(config.GetString("alert_twilio_from"), config.GetString("alert_twilio_to"), message, "", "") if exp != nil || err != nil { log.Error("sendTwilio error", "res", res, "exp", exp, "error", err) } } func sendEmail(message string) { defer func() { if err := recover(); err != nil { log.Error("sendEmail error", "error", err) } }() subject := message if len(subject) > 80 { subject = subject[:80] } err := SendEmail(subject, message, config.GetStringSlice("alert_email_recipients")) if err != nil { log.Error("sendEmail error", "error", err, "message", message) } }