func catchPluginPanic(l *log.Logger) {
if err := recover(); err != nil {
trace := make([]byte, 4096)
count := runtime.Stack(trace, true)
l.Printf("Recover from panic: %s\n", err)
l.Printf("Stack of %d bytes: %s\n", count, trace)
panic(err)
}
}
func publishDataToRmq(metrics []plugin.PluginMetricType, address string, exName string, rtKey string, exKind string, logger *log.Logger) error {
conn, err := amqp.Dial("amqp://" + address)
if err != nil {
logger.Printf("RMQ Publisher: cannot open connection, %s", err)
return err
}
defer conn.Close()
c, err := conn.Channel()
if err != nil {
logger.Printf("RMQ Publisher: cannot open channel: %s", err)
return err
}
err = c.ExchangeDeclare(exName, exKind, true, false, false, false, nil)
if err != nil {
logger.Printf("RMQ Publisher: cannot declare exchange: %v", err)
return err
}
data, err := json.Marshal(metrics)
if err != nil {
logger.Printf("RMQ Publisher: cannot marshal metrics: %v", err)
return err
}
msg := amqp.Publishing{
DeliveryMode: amqp.Persistent,
Timestamp: time.Now(),
ContentType: "text/plain",
Body: data,
}
err = c.Publish(exName, rtKey, false, false, msg)
if err != nil {
logger.Printf("RMQ Publisher: cannot publish metric %v", err)
return err
}
return nil
}