telegraf/internal/models/buffer_test.go

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package models
import (
"testing"
"time"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/metric"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
type MockMetric struct {
telegraf.Metric
AcceptF func()
RejectF func()
DropF func()
}
func (m *MockMetric) Accept() {
m.AcceptF()
}
func (m *MockMetric) Reject() {
m.RejectF()
}
func (m *MockMetric) Drop() {
m.DropF()
}
func Metric() telegraf.Metric {
return MetricTime(0)
}
func MetricTime(sec int64) telegraf.Metric {
m, err := metric.New(
"cpu",
map[string]string{},
map[string]interface{}{
"value": 42.0,
},
time.Unix(sec, 0),
)
if err != nil {
panic(err)
}
return m
}
func BenchmarkAddMetrics(b *testing.B) {
buf := NewBuffer("test", 10000)
m := Metric()
for n := 0; n < b.N; n++ {
buf.Add(m)
}
}
func setup(b *Buffer) *Buffer {
b.MetricsAdded.Set(0)
b.MetricsWritten.Set(0)
b.MetricsDropped.Set(0)
return b
}
func TestBuffer_LenEmpty(t *testing.T) {
b := setup(NewBuffer("test", 5))
require.Equal(t, 0, b.Len())
}
func TestBuffer_LenOne(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m)
require.Equal(t, 1, b.Len())
}
func TestBuffer_LenFull(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
require.Equal(t, 5, b.Len())
}
func TestBuffer_LenOverfill(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
setup(b)
b.Add(m, m, m, m, m, m)
require.Equal(t, 5, b.Len())
}
func TestBuffer_BatchLenZero(t *testing.T) {
b := setup(NewBuffer("test", 5))
batch := b.Batch(0)
require.Len(t, batch, 0)
}
func TestBuffer_BatchLenBufferEmpty(t *testing.T) {
b := setup(NewBuffer("test", 5))
batch := b.Batch(2)
require.Len(t, batch, 0)
}
func TestBuffer_BatchLenUnderfill(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m)
batch := b.Batch(2)
require.Len(t, batch, 1)
}
func TestBuffer_BatchLenFill(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m)
batch := b.Batch(2)
require.Len(t, batch, 2)
}
func TestBuffer_BatchLenExact(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m)
batch := b.Batch(2)
require.Len(t, batch, 2)
}
func TestBuffer_BatchLenLargerThanBuffer(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(6)
require.Len(t, batch, 5)
}
func TestBuffer_BatchWrap(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(2)
b.Accept(batch)
b.Add(m, m)
batch = b.Batch(5)
require.Len(t, batch, 5)
}
func TestBuffer_BatchLatest(t *testing.T) {
b := setup(NewBuffer("test", 4))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(2)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(3),
MetricTime(2),
}, batch)
}
func TestBuffer_BatchLatestWrap(t *testing.T) {
b := setup(NewBuffer("test", 4))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
b.Add(MetricTime(4))
b.Add(MetricTime(5))
batch := b.Batch(2)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(5),
MetricTime(4),
}, batch)
}
func TestBuffer_MultipleBatch(t *testing.T) {
b := setup(NewBuffer("test", 10))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
batch := b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(6),
MetricTime(5),
MetricTime(4),
MetricTime(3),
MetricTime(2),
}, batch)
b.Accept(batch)
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(1),
}, batch)
b.Accept(batch)
}
func TestBuffer_RejectWithRoom(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(2)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Reject(batch)
require.Equal(t, int64(0), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(5),
MetricTime(4),
MetricTime(3),
MetricTime(2),
MetricTime(1),
}, batch)
}
func TestBuffer_RejectNothingNewFull(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
b.Add(MetricTime(4))
b.Add(MetricTime(5))
batch := b.Batch(2)
b.Reject(batch)
require.Equal(t, int64(0), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(5),
MetricTime(4),
MetricTime(3),
MetricTime(2),
MetricTime(1),
}, batch)
}
func TestBuffer_RejectNoRoom(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(2)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
b.Add(MetricTime(7))
b.Add(MetricTime(8))
b.Reject(batch)
require.Equal(t, int64(3), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(8),
MetricTime(7),
MetricTime(6),
MetricTime(5),
MetricTime(4),
}, batch)
}
func TestBuffer_RejectRoomExact(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
batch := b.Batch(2)
b.Add(MetricTime(3))
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Reject(batch)
require.Equal(t, int64(0), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(5),
MetricTime(4),
MetricTime(3),
MetricTime(2),
MetricTime(1),
}, batch)
}
func TestBuffer_RejectRoomOverwriteOld(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(1)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
b.Reject(batch)
require.Equal(t, int64(1), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(6),
MetricTime(5),
MetricTime(4),
MetricTime(3),
MetricTime(2),
}, batch)
}
func TestBuffer_RejectPartialRoom(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(2)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
b.Add(MetricTime(7))
b.Reject(batch)
require.Equal(t, int64(2), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(7),
MetricTime(6),
MetricTime(5),
MetricTime(4),
MetricTime(3),
}, batch)
}
func TestBuffer_RejectNewMetricsWrapped(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(2)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
// buffer: 1, 4, 5; batch: 2, 3
require.Equal(t, int64(0), b.MetricsDropped.Get())
b.Add(MetricTime(6))
b.Add(MetricTime(7))
b.Add(MetricTime(8))
b.Add(MetricTime(9))
b.Add(MetricTime(10))
// buffer: 8, 9, 10, 6, 7; batch: 2, 3
require.Equal(t, int64(3), b.MetricsDropped.Get())
b.Add(MetricTime(11))
b.Add(MetricTime(12))
b.Add(MetricTime(13))
b.Add(MetricTime(14))
b.Add(MetricTime(15))
// buffer: 13, 14, 15, 11, 12; batch: 2, 3
require.Equal(t, int64(8), b.MetricsDropped.Get())
b.Reject(batch)
require.Equal(t, int64(10), b.MetricsDropped.Get())
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(15),
MetricTime(14),
MetricTime(13),
MetricTime(12),
MetricTime(11),
}, batch)
}
func TestBuffer_RejectWrapped(t *testing.T) {
b := setup(NewBuffer("test", 5))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
b.Add(MetricTime(7))
b.Add(MetricTime(8))
batch := b.Batch(3)
b.Add(MetricTime(9))
b.Add(MetricTime(10))
b.Add(MetricTime(11))
b.Add(MetricTime(12))
b.Reject(batch)
batch = b.Batch(5)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(12),
MetricTime(11),
MetricTime(10),
MetricTime(9),
MetricTime(8),
}, batch)
}
func TestBuffer_RejectAdjustFirst(t *testing.T) {
b := setup(NewBuffer("test", 10))
b.Add(MetricTime(1))
b.Add(MetricTime(2))
b.Add(MetricTime(3))
batch := b.Batch(3)
b.Add(MetricTime(4))
b.Add(MetricTime(5))
b.Add(MetricTime(6))
b.Reject(batch)
b.Add(MetricTime(7))
b.Add(MetricTime(8))
b.Add(MetricTime(9))
batch = b.Batch(3)
b.Add(MetricTime(10))
b.Add(MetricTime(11))
b.Add(MetricTime(12))
b.Reject(batch)
b.Add(MetricTime(13))
b.Add(MetricTime(14))
b.Add(MetricTime(15))
batch = b.Batch(3)
b.Add(MetricTime(16))
b.Add(MetricTime(17))
b.Add(MetricTime(18))
b.Reject(batch)
b.Add(MetricTime(19))
batch = b.Batch(10)
testutil.RequireMetricsEqual(t,
[]telegraf.Metric{
MetricTime(19),
MetricTime(18),
MetricTime(17),
MetricTime(16),
MetricTime(15),
MetricTime(14),
MetricTime(13),
MetricTime(12),
MetricTime(11),
MetricTime(10),
}, batch)
}
func TestBuffer_AddDropsOverwrittenMetrics(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
b.Add(m, m, m, m, m)
require.Equal(t, int64(5), b.MetricsDropped.Get())
require.Equal(t, int64(0), b.MetricsWritten.Get())
}
func TestBuffer_AcceptRemovesBatch(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m)
batch := b.Batch(2)
b.Accept(batch)
require.Equal(t, 1, b.Len())
}
func TestBuffer_RejectLeavesBatch(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m)
batch := b.Batch(2)
b.Reject(batch)
require.Equal(t, 3, b.Len())
}
func TestBuffer_AcceptWritesOverwrittenBatch(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(5)
b.Add(m, m, m, m, m)
b.Accept(batch)
require.Equal(t, int64(0), b.MetricsDropped.Get())
require.Equal(t, int64(5), b.MetricsWritten.Get())
}
func TestBuffer_BatchRejectDropsOverwrittenBatch(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(5)
b.Add(m, m, m, m, m)
b.Reject(batch)
require.Equal(t, int64(5), b.MetricsDropped.Get())
require.Equal(t, int64(0), b.MetricsWritten.Get())
}
func TestBuffer_MetricsOverwriteBatchAccept(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(3)
b.Add(m, m, m)
b.Accept(batch)
require.Equal(t, int64(0), b.MetricsDropped.Get(), "dropped")
require.Equal(t, int64(3), b.MetricsWritten.Get(), "written")
}
func TestBuffer_MetricsOverwriteBatchReject(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(3)
b.Add(m, m, m)
b.Reject(batch)
require.Equal(t, int64(3), b.MetricsDropped.Get())
require.Equal(t, int64(0), b.MetricsWritten.Get())
}
func TestBuffer_MetricsBatchAcceptRemoved(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(3)
b.Add(m, m, m, m, m)
b.Accept(batch)
require.Equal(t, int64(2), b.MetricsDropped.Get())
require.Equal(t, int64(3), b.MetricsWritten.Get())
}
func TestBuffer_WrapWithBatch(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m)
b.Batch(3)
b.Add(m, m, m, m, m, m)
require.Equal(t, int64(1), b.MetricsDropped.Get())
}
func TestBuffer_BatchNotRemoved(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
b.Batch(2)
require.Equal(t, 5, b.Len())
}
func TestBuffer_BatchRejectAcceptNoop(t *testing.T) {
m := Metric()
b := setup(NewBuffer("test", 5))
b.Add(m, m, m, m, m)
batch := b.Batch(2)
b.Reject(batch)
b.Accept(batch)
require.Equal(t, 5, b.Len())
}
func TestBuffer_AcceptCallsMetricAccept(t *testing.T) {
var accept int
mm := &MockMetric{
Metric: Metric(),
AcceptF: func() {
accept++
},
}
b := setup(NewBuffer("test", 5))
b.Add(mm, mm, mm)
batch := b.Batch(2)
b.Accept(batch)
require.Equal(t, 2, accept)
}
func TestBuffer_AddCallsMetricRejectWhenNoBatch(t *testing.T) {
var reject int
mm := &MockMetric{
Metric: Metric(),
RejectF: func() {
reject++
},
}
b := setup(NewBuffer("test", 5))
setup(b)
b.Add(mm, mm, mm, mm, mm)
b.Add(mm, mm)
require.Equal(t, 2, reject)
}
func TestBuffer_AddCallsMetricRejectWhenNotInBatch(t *testing.T) {
var reject int
mm := &MockMetric{
Metric: Metric(),
RejectF: func() {
reject++
},
}
b := setup(NewBuffer("test", 5))
setup(b)
b.Add(mm, mm, mm, mm, mm)
batch := b.Batch(2)
b.Add(mm, mm, mm, mm)
require.Equal(t, 2, reject)
b.Reject(batch)
require.Equal(t, 4, reject)
}
func TestBuffer_RejectCallsMetricRejectWithOverwritten(t *testing.T) {
var reject int
mm := &MockMetric{
Metric: Metric(),
RejectF: func() {
reject++
},
}
b := setup(NewBuffer("test", 5))
b.Add(mm, mm, mm, mm, mm)
batch := b.Batch(5)
b.Add(mm, mm)
require.Equal(t, 0, reject)
b.Reject(batch)
require.Equal(t, 2, reject)
}
func TestBuffer_AddOverwriteAndReject(t *testing.T) {
var reject int
mm := &MockMetric{
Metric: Metric(),
RejectF: func() {
reject++
},
}
b := setup(NewBuffer("test", 5))
b.Add(mm, mm, mm, mm, mm)
batch := b.Batch(5)
b.Add(mm, mm, mm, mm, mm)
b.Add(mm, mm, mm, mm, mm)
b.Add(mm, mm, mm, mm, mm)
b.Add(mm, mm, mm, mm, mm)
require.Equal(t, 15, reject)
b.Reject(batch)
require.Equal(t, 20, reject)
}
func TestBuffer_AddOverwriteAndRejectOffset(t *testing.T) {
var reject int
var accept int
mm := &MockMetric{
Metric: Metric(),
RejectF: func() {
reject++
},
AcceptF: func() {
accept++
},
}
b := setup(NewBuffer("test", 5))
b.Add(mm, mm, mm)
b.Add(mm, mm, mm, mm)
require.Equal(t, 2, reject)
batch := b.Batch(5)
b.Add(mm, mm, mm, mm)
require.Equal(t, 2, reject)
b.Add(mm, mm, mm, mm)
require.Equal(t, 5, reject)
b.Add(mm, mm, mm, mm)
require.Equal(t, 9, reject)
b.Add(mm, mm, mm, mm)
require.Equal(t, 13, reject)
b.Accept(batch)
require.Equal(t, 13, reject)
require.Equal(t, 5, accept)
}
func TestBuffer_RejectEmptyBatch(t *testing.T) {
b := setup(NewBuffer("test", 5))
batch := b.Batch(2)
b.Add(MetricTime(1))
b.Reject(batch)
b.Add(MetricTime(2))
batch = b.Batch(2)
for _, m := range batch {
require.NotNil(t, m)
}
}