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