mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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145 lines
3.4 KiB
Go
145 lines
3.4 KiB
Go
package datadogv2
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import (
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"encoding/json"
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"fmt"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
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)
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// Request represents DataDog POST request to /api/v2/series
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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type Request struct {
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Series []Series `json:"series"`
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}
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func (req *Request) reset() {
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// recursively reset all the fields in req in order to avoid field value
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// re-use in json.Unmarshal() when the corresponding field is missing
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// in the unmarshaled JSON.
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// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3432
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series := req.Series
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for i := range series {
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series[i].reset()
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}
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req.Series = series[:0]
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}
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// UnmarshalJSON unmarshals JSON DataDog /api/v2/series request body from b to req.
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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//
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// b shouldn't be modified when req is in use.
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func UnmarshalJSON(req *Request, b []byte) error {
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req.reset()
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if err := json.Unmarshal(b, req); err != nil {
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return fmt.Errorf("cannot unmarshal %q: %w", b, err)
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}
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// Set missing timestamps to the current time.
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currentTimestamp := int64(fasttime.UnixTimestamp())
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series := req.Series
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for i := range series {
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points := series[i].Points
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for j := range points {
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pt := &points[j]
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if pt.Timestamp <= 0 {
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pt.Timestamp = currentTimestamp
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}
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}
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}
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return nil
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}
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// UnmarshalProtobuf unmarshals protobuf DataDog /api/v2/series request body from b to req.
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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//
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// b shouldn't be modified when req is in use.
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func UnmarshalProtobuf(req *Request, b []byte) error {
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req.reset()
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_ = b
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return fmt.Errorf("unimplemented")
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}
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// Series represents a series item from DataDog POST request to /api/v2/series
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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type Series struct {
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// Do not decode Interval, since it isn't used by VictoriaMetrics
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// Interval int64 `json:"interval"`
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// Do not decode Metadata, since it isn't used by VictoriaMetrics
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// Metadata Metadata `json:"metadata"`
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// Metric is the name of the metric
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Metric string `json:"metric"`
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// Points points for the given metric
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Points []Point `json:"points"`
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Resources []Resource `json:"resources"`
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SourceTypeName string `json:"source_type_name"`
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Tags []string
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// Do not decode Type, since it isn't used by VictoriaMetrics
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// Type int `json:"type"`
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// Do not decode Unit, since it isn't used by VictoriaMetrics
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// Unit string
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}
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func (s *Series) reset() {
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s.Metric = ""
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points := s.Points
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for i := range points {
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points[i].reset()
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}
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s.Points = points[:0]
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resources := s.Resources
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for i := range resources {
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resources[i].reset()
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}
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s.Resources = resources[:0]
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s.SourceTypeName = ""
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tags := s.Tags
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for i := range tags {
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tags[i] = ""
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}
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s.Tags = tags[:0]
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}
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// Point represents a point from DataDog POST request to /api/v2/series
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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type Point struct {
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// Timestamp is point timestamp in seconds
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Timestamp int64 `json:"timestamp"`
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// Value is point value
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Value float64 `json:"value"`
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}
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func (pt *Point) reset() {
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pt.Timestamp = 0
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pt.Value = 0
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}
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// Resource is series resource from DataDog POST request to /api/v2/series
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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type Resource struct {
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Name string `json:"name"`
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Type string `json:"type"`
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}
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func (r *Resource) reset() {
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r.Name = ""
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r.Type = ""
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}
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