telegraf/testutil/accumulator.go

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package testutil
import (
"fmt"
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"reflect"
"time"
)
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// Point defines a single point measurement
type Point struct {
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Measurement string
Tags map[string]string
Values map[string]interface{}
Time time.Time
}
// Accumulator defines a mocked out accumulator
type Accumulator struct {
Points []*Point
}
// Add adds a measurement point to the accumulator
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func (a *Accumulator) Add(measurement string, value interface{}, tags map[string]string) {
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if tags == nil {
tags = map[string]string{}
}
a.Points = append(
a.Points,
&Point{
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Measurement: measurement,
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Values: map[string]interface{}{"value": value},
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Tags: tags,
},
)
}
// AddFieldsWithTime adds a measurement point with a specified timestamp.
func (a *Accumulator) AddFieldsWithTime(
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measurement string,
values map[string]interface{},
tags map[string]string,
timestamp time.Time,
) {
a.Points = append(
a.Points,
&Point{
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Measurement: measurement,
Values: values,
Tags: tags,
Time: timestamp,
},
)
}
// Get gets the specified measurement point from the accumulator
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func (a *Accumulator) Get(measurement string) (*Point, bool) {
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for _, p := range a.Points {
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if p.Measurement == measurement {
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return p, true
}
}
return nil, false
}
// CheckValue checks that the accumulators point for the given measurement
// is the same as the given value.
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func (a *Accumulator) CheckValue(measurement string, val interface{}) bool {
for _, p := range a.Points {
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if p.Measurement == measurement {
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return p.Values["value"] == val
}
}
return false
}
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// CheckTaggedValue calls ValidateTaggedValue
func (a *Accumulator) CheckTaggedValue(
measurement string,
val interface{},
tags map[string]string,
) bool {
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return a.ValidateTaggedValue(measurement, val, tags) == nil
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}
// ValidateTaggedValue validates that the given measurement and value exist
// in the accumulator and with the given tags.
func (a *Accumulator) ValidateTaggedValue(
measurement string,
val interface{},
tags map[string]string,
) error {
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if tags == nil {
tags = map[string]string{}
}
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for _, p := range a.Points {
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if !reflect.DeepEqual(tags, p.Tags) {
continue
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}
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if p.Measurement == measurement {
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if p.Values["value"] != val {
return fmt.Errorf("%v (%T) != %v (%T)",
p.Values["value"], p.Values["value"], val, val)
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}
return nil
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}
}
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return fmt.Errorf("unknown measurement %s with tags %v", measurement, tags)
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}
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// ValidateValue calls ValidateTaggedValue
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func (a *Accumulator) ValidateValue(measurement string, val interface{}) error {
return a.ValidateTaggedValue(measurement, val, nil)
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}
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// HasIntValue returns true if the measurement has an Int value
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func (a *Accumulator) HasIntValue(measurement string) bool {
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for _, p := range a.Points {
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if p.Measurement == measurement {
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_, ok := p.Values["value"].(int64)
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return ok
}
}
return false
}
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// HasUIntValue returns true if the measurement has a UInt value
func (a *Accumulator) HasUIntValue(measurement string) bool {
for _, p := range a.Points {
if p.Measurement == measurement {
_, ok := p.Values["value"].(uint64)
return ok
}
}
return false
}
// HasFloatValue returns true if the given measurement has a float value
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func (a *Accumulator) HasFloatValue(measurement string) bool {
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for _, p := range a.Points {
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if p.Measurement == measurement {
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_, ok := p.Values["value"].(float64)
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return ok
}
}
return false
}
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// HasMeasurement returns true if the accumulator has a measurement with the
// given name
func (a *Accumulator) HasMeasurement(measurement string) bool {
for _, p := range a.Points {
if p.Measurement == measurement {
return true
}
}
return false
}