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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)
}
}