65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package influx
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import (
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"bytes"
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"fmt"
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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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// InfluxParser is an object for Parsing incoming metrics.
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type InfluxParser struct {
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// DefaultTags will be added to every parsed metric
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DefaultTags map[string]string
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}
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func (p *InfluxParser) ParseWithDefaultTimePrecision(buf []byte, t time.Time, precision string) ([]telegraf.Metric, error) {
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if !bytes.HasSuffix(buf, []byte("\n")) {
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buf = append(buf, '\n')
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}
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// parse even if the buffer begins with a newline
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buf = bytes.TrimPrefix(buf, []byte("\n"))
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metrics, err := metric.ParseWithDefaultTimePrecision(buf, t, precision)
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if len(p.DefaultTags) > 0 {
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for _, m := range metrics {
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for k, v := range p.DefaultTags {
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// only set the default tag if it doesn't already exist:
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if !m.HasTag(k) {
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m.AddTag(k, v)
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}
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}
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}
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}
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return metrics, err
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}
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// Parse returns a slice of Metrics from a text representation of a
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// metric (in line-protocol format)
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// with each metric separated by newlines. If any metrics fail to parse,
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// a non-nil error will be returned in addition to the metrics that parsed
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// successfully.
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func (p *InfluxParser) Parse(buf []byte) ([]telegraf.Metric, error) {
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return p.ParseWithDefaultTimePrecision(buf, time.Now(), "")
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}
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func (p *InfluxParser) ParseLine(line string) (telegraf.Metric, error) {
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metrics, err := p.Parse([]byte(line + "\n"))
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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(
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"Can not parse the line: %s, for data format: influx ", line)
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}
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return metrics[0], nil
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}
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func (p *InfluxParser) SetDefaultTags(tags map[string]string) {
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p.DefaultTags = tags
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}
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