116 lines
2.7 KiB
Go
116 lines
2.7 KiB
Go
package telegraf
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import (
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"bytes"
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"time"
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"github.com/influxdata/influxdb/client/v2"
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"github.com/influxdata/influxdb/models"
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)
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type Metric interface {
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// Name returns the measurement name of the metric
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Name() string
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// Name returns the tags associated with the metric
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Tags() map[string]string
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// Time return the timestamp for the metric
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Time() time.Time
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// UnixNano returns the unix nano time of the metric
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UnixNano() int64
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// Fields returns the fields for the metric
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Fields() map[string]interface{}
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// String returns a line-protocol string of the metric
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String() string
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// PrecisionString returns a line-protocol string of the metric, at precision
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PrecisionString(precison string) string
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// Point returns a influxdb client.Point object
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Point() *client.Point
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}
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// metric is a wrapper of the influxdb client.Point struct
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type metric struct {
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pt *client.Point
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}
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// NewMetric returns a metric with the given timestamp. If a timestamp is not
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// given, then data is sent to the database without a timestamp, in which case
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// the server will assign local time upon reception. NOTE: it is recommended to
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// send data with a timestamp.
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func NewMetric(
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name string,
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tags map[string]string,
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fields map[string]interface{},
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t ...time.Time,
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) (Metric, error) {
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var T time.Time
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if len(t) > 0 {
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T = t[0]
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}
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pt, err := client.NewPoint(name, tags, fields, T)
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if err != nil {
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return nil, err
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}
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return &metric{
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pt: pt,
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}, nil
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}
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// ParseMetrics 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 ParseMetrics(buf []byte) ([]Metric, error) {
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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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points, err := models.ParsePoints(buf)
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metrics := make([]Metric, len(points))
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for i, point := range points {
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// Ignore error here because it's impossible that a model.Point
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// wouldn't parse into client.Point properly
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metrics[i], _ = NewMetric(point.Name(), point.Tags(),
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point.Fields(), point.Time())
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}
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return metrics, err
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}
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func (m *metric) Name() string {
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return m.pt.Name()
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}
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func (m *metric) Tags() map[string]string {
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return m.pt.Tags()
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}
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func (m *metric) Time() time.Time {
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return m.pt.Time()
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}
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func (m *metric) UnixNano() int64 {
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return m.pt.UnixNano()
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}
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func (m *metric) Fields() map[string]interface{} {
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return m.pt.Fields()
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}
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func (m *metric) String() string {
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return m.pt.String()
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}
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func (m *metric) PrecisionString(precison string) string {
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return m.pt.PrecisionString(precison)
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}
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func (m *metric) Point() *client.Point {
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return m.pt
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}
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