func CreateTicker(decl udf.UDSFDeclarer, i data.Value) (udf.UDSF, error) {
interval, err := data.ToDuration(i)
if err != nil {
return nil, err
}
return &Ticker{
interval: interval,
}, nil
}
func CreateLoremSource(ctx *core.Context, ioParams *bql.IOParams, params data.Map) (core.Source, error) {
interval := 1 * time.Microsecond
if v, ok := params["interval"]; ok {
i, err := data.ToDuration(v)
if err != nil {
return nil, err
}
interval = i
}
return core.ImplementSourceStop(&LoremSource{
interval: interval,
}), nil
}
func CreateCollector(decl udf.UDSFDeclarer, inputStream, field string, i data.Value) (udf.UDSF, error) {
interval, err := data.ToDuration(i)
if err != nil {
return nil, err
}
// cannot understand yet
if err := decl.Input(inputStream, nil); err != nil {
return nil, err
}
return &Collector{
interval: interval,
check: int(time.Now().Nanosecond() / 1e+8),
}, nil
}