forked from grafana/k6
/
metric.go
102 lines (86 loc) · 2.26 KB
/
metric.go
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/*
*
* k6 - a next-generation load testing tool
* Copyright (C) 2016 Load Impact
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package v1
import (
"bytes"
"encoding/json"
"time"
"gopkg.in/guregu/null.v3"
"github.com/loadimpact/k6/stats"
)
type NullMetricType struct {
Type stats.MetricType
Valid bool
}
func (t NullMetricType) MarshalJSON() ([]byte, error) {
if !t.Valid {
return []byte("null"), nil
}
return t.Type.MarshalJSON()
}
func (t *NullMetricType) UnmarshalJSON(data []byte) error {
if bytes.Equal(data, []byte("null")) {
t.Valid = false
return nil
}
t.Valid = true
return json.Unmarshal(data, &t.Type)
}
type NullValueType struct {
Type stats.ValueType
Valid bool
}
func (t NullValueType) MarshalJSON() ([]byte, error) {
if !t.Valid {
return []byte("null"), nil
}
return t.Type.MarshalJSON()
}
func (t *NullValueType) UnmarshalJSON(data []byte) error {
if bytes.Equal(data, []byte("null")) {
t.Valid = false
return nil
}
t.Valid = true
return json.Unmarshal(data, &t.Type)
}
type Metric struct {
Name string `json:"-" yaml:"name"`
Type NullMetricType `json:"type" yaml:"type"`
Contains NullValueType `json:"contains" yaml:"contains"`
Tainted null.Bool `json:"tainted" yaml:"tainted"`
Sample map[string]float64 `json:"sample" yaml:"sample"`
}
func NewMetric(m *stats.Metric, t time.Duration) Metric {
return Metric{
Name: m.Name,
Type: NullMetricType{m.Type, true},
Contains: NullValueType{m.Contains, true},
Tainted: m.Tainted,
Sample: m.Sink.Format(t),
}
}
func (m Metric) GetID() string {
return m.Name
}
func (m *Metric) SetID(id string) error {
m.Name = id
return nil
}