package value import ( "bytes" "fmt" "strconv" "strings" "time" "github.com/influxdata/telegraf" ) type ValueParser struct { MetricName string DataType string DefaultTags map[string]string } func (v *ValueParser) Parse(buf []byte) ([]telegraf.Metric, error) { vStr := string(bytes.TrimSpace(bytes.Trim(buf, "\x00"))) // unless it's a string, separate out any fields in the buffer, // ignore anything but the last. if v.DataType != "string" { values := strings.Fields(vStr) if len(values) < 1 { return []telegraf.Metric{}, nil } vStr = string(values[len(values)-1]) } var value interface{} var err error switch v.DataType { case "", "int", "integer": value, err = strconv.Atoi(vStr) case "float", "long": value, err = strconv.ParseFloat(vStr, 64) case "str", "string": value = vStr case "bool", "boolean": value, err = strconv.ParseBool(vStr) } if err != nil { return nil, err } fields := map[string]interface{}{"value": value} metric, err := telegraf.NewMetric(v.MetricName, v.DefaultTags, fields, time.Now().UTC()) if err != nil { return nil, err } return []telegraf.Metric{metric}, nil } func (v *ValueParser) ParseLine(line string) (telegraf.Metric, error) { metrics, err := v.Parse([]byte(line)) if err != nil { return nil, err } if len(metrics) < 1 { return nil, fmt.Errorf("Can not parse the line: %s, for data format: value", line) } return metrics[0], nil } func (v *ValueParser) SetDefaultTags(tags map[string]string) { v.DefaultTags = tags }