package testutil import ( "encoding/json" "fmt" "reflect" "sync" "sync/atomic" "testing" "time" "github.com/influxdata/telegraf" "github.com/stretchr/testify/assert" ) // Metric defines a single point measurement type Metric struct { Measurement string Tags map[string]string Fields map[string]interface{} Time time.Time } func (p *Metric) String() string { return fmt.Sprintf("%s %v", p.Measurement, p.Fields) } // Accumulator defines a mocked out accumulator type Accumulator struct { sync.Mutex *sync.Cond Metrics []*Metric nMetrics uint64 Discard bool Errors []error debug bool } func (a *Accumulator) NMetrics() uint64 { return atomic.LoadUint64(&a.nMetrics) } func (a *Accumulator) ClearMetrics() { a.Lock() defer a.Unlock() atomic.StoreUint64(&a.nMetrics, 0) a.Metrics = make([]*Metric, 0) } // AddFields adds a measurement point with a specified timestamp. func (a *Accumulator) AddFields( measurement string, fields map[string]interface{}, tags map[string]string, timestamp ...time.Time, ) { a.Lock() defer a.Unlock() atomic.AddUint64(&a.nMetrics, 1) if a.Cond != nil { a.Cond.Broadcast() } if a.Discard { return } if tags == nil { tags = map[string]string{} } if len(fields) == 0 { return } var t time.Time if len(timestamp) > 0 { t = timestamp[0] } else { t = time.Now() } if a.debug { pretty, _ := json.MarshalIndent(fields, "", " ") prettyTags, _ := json.MarshalIndent(tags, "", " ") msg := fmt.Sprintf("Adding Measurement [%s]\nFields:%s\nTags:%s\n", measurement, string(pretty), string(prettyTags)) fmt.Print(msg) } p := &Metric{ Measurement: measurement, Fields: fields, Tags: tags, Time: t, } a.Metrics = append(a.Metrics, p) } func (a *Accumulator) AddCounter( measurement string, fields map[string]interface{}, tags map[string]string, timestamp ...time.Time, ) { a.AddFields(measurement, fields, tags, timestamp...) } func (a *Accumulator) AddGauge( measurement string, fields map[string]interface{}, tags map[string]string, timestamp ...time.Time, ) { a.AddFields(measurement, fields, tags, timestamp...) } func (a *Accumulator) AddMetrics(metrics []telegraf.Metric) { for _, m := range metrics { a.AddFields(m.Name(), m.Fields(), m.Tags(), m.Time()) } } // AddError appends the given error to Accumulator.Errors. func (a *Accumulator) AddError(err error) { if err == nil { return } a.Lock() a.Errors = append(a.Errors, err) if a.Cond != nil { a.Cond.Broadcast() } a.Unlock() } func (a *Accumulator) SetPrecision(precision, interval time.Duration) { return } func (a *Accumulator) DisablePrecision() { return } func (a *Accumulator) Debug() bool { // stub for implementing Accumulator interface. return a.debug } func (a *Accumulator) SetDebug(debug bool) { // stub for implementing Accumulator interface. a.debug = debug } // Get gets the specified measurement point from the accumulator func (a *Accumulator) Get(measurement string) (*Metric, bool) { for _, p := range a.Metrics { if p.Measurement == measurement { return p, true } } return nil, false } func (a *Accumulator) HasTag(measurement string, key string) bool { for _, p := range a.Metrics { if p.Measurement == measurement { _, ok := p.Tags[key] return ok } } return false } func (a *Accumulator) TagValue(measurement string, key string) string { for _, p := range a.Metrics { if p.Measurement == measurement { v, ok := p.Tags[key] if !ok { return "" } return v } } return "" } // Calls the given Gather function and returns the first error found. func (a *Accumulator) GatherError(gf func(telegraf.Accumulator) error) error { if err := gf(a); err != nil { return err } if len(a.Errors) > 0 { return a.Errors[0] } return nil } // NFields returns the total number of fields in the accumulator, across all // measurements func (a *Accumulator) NFields() int { a.Lock() defer a.Unlock() counter := 0 for _, pt := range a.Metrics { for _, _ = range pt.Fields { counter++ } } return counter } // Wait waits for the given number of metrics to be added to the accumulator. func (a *Accumulator) Wait(n int) { a.Lock() if a.Cond == nil { a.Cond = sync.NewCond(&a.Mutex) } for int(a.NMetrics()) < n { a.Cond.Wait() } a.Unlock() } // WaitError waits for the given number of errors to be added to the accumulator. func (a *Accumulator) WaitError(n int) { a.Lock() if a.Cond == nil { a.Cond = sync.NewCond(&a.Mutex) } for len(a.Errors) < n { a.Cond.Wait() } a.Unlock() } func (a *Accumulator) AssertContainsTaggedFields( t *testing.T, measurement string, fields map[string]interface{}, tags map[string]string, ) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if !reflect.DeepEqual(tags, p.Tags) { continue } if p.Measurement == measurement { assert.Equal(t, fields, p.Fields) return } } msg := fmt.Sprintf("unknown measurement %s with tags %v", measurement, tags) assert.Fail(t, msg) } func (a *Accumulator) AssertDoesNotContainsTaggedFields( t *testing.T, measurement string, fields map[string]interface{}, tags map[string]string, ) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if !reflect.DeepEqual(tags, p.Tags) { continue } if p.Measurement == measurement { assert.Equal(t, fields, p.Fields) msg := fmt.Sprintf("found measurement %s with tags %v which should not be there", measurement, tags) assert.Fail(t, msg) } } return } func (a *Accumulator) AssertContainsFields( t *testing.T, measurement string, fields map[string]interface{}, ) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { assert.Equal(t, fields, p.Fields) return } } msg := fmt.Sprintf("unknown measurement %s", measurement) assert.Fail(t, msg) } func (a *Accumulator) HasPoint( measurement string, tags map[string]string, fieldKey string, fieldValue interface{}, ) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement != measurement { continue } if !reflect.DeepEqual(tags, p.Tags) { continue } v, ok := p.Fields[fieldKey] if ok && reflect.DeepEqual(v, fieldValue) { return true } } return false } func (a *Accumulator) AssertDoesNotContainMeasurement(t *testing.T, measurement string) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { msg := fmt.Sprintf("found unexpected measurement %s", measurement) assert.Fail(t, msg) } } } // HasTimestamp returns true if the measurement has a matching Time value func (a *Accumulator) HasTimestamp(measurement string, timestamp time.Time) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { return timestamp.Equal(p.Time) } } return false } // HasField returns true if the given measurement has a field with the given // name func (a *Accumulator) HasField(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { if _, ok := p.Fields[field]; ok { return true } } } return false } // HasIntField returns true if the measurement has an Int value func (a *Accumulator) HasIntField(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(int) return ok } } } } return false } // HasInt64Field returns true if the measurement has an Int64 value func (a *Accumulator) HasInt64Field(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(int64) return ok } } } } return false } // HasInt32Field returns true if the measurement has an Int value func (a *Accumulator) HasInt32Field(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(int32) return ok } } } } return false } // HasStringField returns true if the measurement has an String value func (a *Accumulator) HasStringField(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(string) return ok } } } } return false } // HasUIntField returns true if the measurement has a UInt value func (a *Accumulator) HasUIntField(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(uint64) return ok } } } } return false } // HasFloatField returns true if the given measurement has a float value func (a *Accumulator) HasFloatField(measurement string, field string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { _, ok := value.(float64) return ok } } } } return false } // HasMeasurement returns true if the accumulator has a measurement with the // given name func (a *Accumulator) HasMeasurement(measurement string) bool { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { return true } } return false } // IntField returns the int value of the given measurement and field or false. func (a *Accumulator) IntField(measurement string, field string) (int, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(int) return v, ok } } } } return 0, false } // Int64Field returns the int64 value of the given measurement and field or false. func (a *Accumulator) Int64Field(measurement string, field string) (int64, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(int64) return v, ok } } } } return 0, false } // Int32Field returns the int32 value of the given measurement and field or false. func (a *Accumulator) Int32Field(measurement string, field string) (int32, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(int32) return v, ok } } } } return 0, false } // FloatField returns the float64 value of the given measurement and field or false. func (a *Accumulator) FloatField(measurement string, field string) (float64, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(float64) return v, ok } } } } return 0.0, false } // StringField returns the string value of the given measurement and field or false. func (a *Accumulator) StringField(measurement string, field string) (string, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(string) return v, ok } } } } return "", false } // BoolField returns the bool value of the given measurement and field or false. func (a *Accumulator) BoolField(measurement string, field string) (bool, bool) { a.Lock() defer a.Unlock() for _, p := range a.Metrics { if p.Measurement == measurement { for fieldname, value := range p.Fields { if fieldname == field { v, ok := value.(bool) return v, ok } } } } return false, false }