133 lines
3.0 KiB
Go
133 lines
3.0 KiB
Go
package influx
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import (
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"bytes"
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"errors"
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"strconv"
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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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// MetricHandler implements the Handler interface and produces telegraf.Metric.
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type MetricHandler struct {
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err error
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timePrecision time.Duration
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timeFunc TimeFunc
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metric telegraf.Metric
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}
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func NewMetricHandler() *MetricHandler {
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return &MetricHandler{
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timePrecision: time.Nanosecond,
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timeFunc: time.Now,
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}
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}
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func (h *MetricHandler) SetTimePrecision(p time.Duration) {
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h.timePrecision = p
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// When the timestamp is omitted from the metric, the timestamp
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// comes from the server clock, truncated to the nearest unit of
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// measurement provided in precision.
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//
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// When a timestamp is provided in the metric, precsision is
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// overloaded to hold the unit of measurement of the timestamp.
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}
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func (h *MetricHandler) SetTimeFunc(f TimeFunc) {
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h.timeFunc = f
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}
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func (h *MetricHandler) Metric() (telegraf.Metric, error) {
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if h.metric.Time().IsZero() {
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h.metric.SetTime(h.timeFunc().Truncate(h.timePrecision))
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}
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return h.metric, nil
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}
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func (h *MetricHandler) SetMeasurement(name []byte) error {
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var err error
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h.metric, err = metric.New(nameUnescape(name),
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nil, nil, time.Time{})
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return err
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}
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func (h *MetricHandler) AddTag(key []byte, value []byte) error {
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tk := unescape(key)
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tv := unescape(value)
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h.metric.AddTag(tk, tv)
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return nil
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}
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func (h *MetricHandler) AddInt(key []byte, value []byte) error {
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fk := unescape(key)
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fv, err := parseIntBytes(bytes.TrimSuffix(value, []byte("i")), 10, 64)
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if err != nil {
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if numerr, ok := err.(*strconv.NumError); ok {
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return numerr.Err
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}
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return err
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}
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h.metric.AddField(fk, fv)
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return nil
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}
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func (h *MetricHandler) AddUint(key []byte, value []byte) error {
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fk := unescape(key)
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fv, err := parseUintBytes(bytes.TrimSuffix(value, []byte("u")), 10, 64)
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if err != nil {
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if numerr, ok := err.(*strconv.NumError); ok {
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return numerr.Err
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}
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return err
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}
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h.metric.AddField(fk, fv)
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return nil
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}
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func (h *MetricHandler) AddFloat(key []byte, value []byte) error {
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fk := unescape(key)
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fv, err := parseFloatBytes(value, 64)
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if err != nil {
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if numerr, ok := err.(*strconv.NumError); ok {
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return numerr.Err
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}
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return err
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}
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h.metric.AddField(fk, fv)
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return nil
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}
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func (h *MetricHandler) AddString(key []byte, value []byte) error {
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fk := unescape(key)
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fv := stringFieldUnescape(value)
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h.metric.AddField(fk, fv)
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return nil
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}
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func (h *MetricHandler) AddBool(key []byte, value []byte) error {
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fk := unescape(key)
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fv, err := parseBoolBytes(value)
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if err != nil {
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return errors.New("unparseable bool")
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}
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h.metric.AddField(fk, fv)
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return nil
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}
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func (h *MetricHandler) SetTimestamp(tm []byte) error {
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v, err := parseIntBytes(tm, 10, 64)
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if err != nil {
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if numerr, ok := err.(*strconv.NumError); ok {
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return numerr.Err
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}
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return err
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}
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//time precision is overloaded to mean time unit here
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ns := v * int64(h.timePrecision)
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h.metric.SetTime(time.Unix(0, ns))
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return nil
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}
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