telegraf/plugins/inputs/request_aggregates/request_aggregates_test.go

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2016-05-09 10:37:17 +00:00
package request_aggregates
import (
"fmt"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
"io/ioutil"
"os"
"regexp"
"testing"
"time"
)
// This tests the start/stop and gather functionality
func TestNewRequestAggregates(t *testing.T) {
tmpfile, err := ioutil.TempFile("", "")
require.NoError(t, err)
tmpfile.WriteString(fmt.Sprintf("%v", time.Now().UnixNano()) + ",123\n")
defer tmpfile.Close()
defer os.Remove(tmpfile.Name())
windowSize := internal.Duration{Duration: time.Millisecond * 100}
acc := &testutil.Accumulator{}
ra := &RequestAggregates{
File: tmpfile.Name(),
TimestampFormat: "ns",
TimeWindowSize: windowSize,
TimeWindows: 1,
ThroughputWindowSize: windowSize,
ThroughputWindows: 10,
TimestampPosition: 0,
TimePosition: 1}
// When we start
ra.Start(acc)
// A tailer is created
ra.Lock()
require.NotNil(t, ra.tailer)
require.Equal(t, tmpfile.Name(), ra.tailer.Filename)
ra.Unlock()
// The windows are initialised
ra.timeMutex.Lock()
require.Equal(t, 1, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
ra.throughputMutex.Lock()
require.Equal(t, 1, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
// When we put a request in the file
time.Sleep(time.Millisecond * 30)
tmpfile.WriteString(fmt.Sprintf("%v", time.Now().UnixNano()) + ",456\n")
time.Sleep(time.Millisecond * 30)
// One metric is stored in the windows
ra.throughputMutex.Lock()
require.Equal(t, int64(1), ra.throughputWindowSlice[0].(*ThroughputWindow).RequestsTotal)
ra.throughputMutex.Unlock()
ra.timeMutex.Lock()
require.Equal(t, 1, len(ra.timeWindowSlice[0].(*TimeWindow).TimesTotal))
require.Equal(t, float64(456), ra.timeWindowSlice[0].(*TimeWindow).TimesTotal[0])
ra.timeMutex.Unlock()
// After the first window is expired
time.Sleep(windowSize.Duration)
// One of the windows has flushed one metric
ra.timeMutex.Lock()
require.Equal(t, 1, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
ra.throughputMutex.Lock()
require.Equal(t, 2, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 1, len(acc.Metrics))
acc.Unlock()
// When we stop
ra.Stop()
// All the metrics should have been flushed
ra.timeMutex.Lock()
require.Equal(t, 0, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
ra.throughputMutex.Lock()
require.Equal(t, 0, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 4, len(acc.Metrics))
acc.Unlock()
}
func TestRequestAggregates_validateConfig(t *testing.T) {
// Empty config
ra := &RequestAggregates{}
require.Error(t, ra.validateConfig())
// Minimum config
ra = &RequestAggregates{
TimestampFormat: "ms",
TimeWindowSize: internal.Duration{Duration: time.Millisecond * 10},
TimeWindows: 2,
ThroughputWindowSize: internal.Duration{Duration: time.Millisecond * 10},
ThroughputWindows: 10}
require.NoError(t, ra.validateConfig())
// Regexp for success
ra.ResultSuccessRegex = "*success.*"
require.Error(t, ra.validateConfig())
ra.ResultSuccessRegex = ".*success.*"
require.NoError(t, ra.validateConfig())
// Time format
ra.TimestampFormat = "thisisnotavalidformat"
require.Error(t, ra.validateConfig())
ra.TimestampFormat = ""
require.Error(t, ra.validateConfig())
ra.TimestampFormat = "Mon Jan _2 15:04:05 2006"
require.NoError(t, ra.validateConfig())
// Percentiles
ra.TimePercentiles = []float32{80, 90, 100}
require.Error(t, ra.validateConfig())
ra.TimePercentiles = []float32{0, 90, 99}
require.Error(t, ra.validateConfig())
ra.TimePercentiles = []float32{80, 90, 99}
require.NoError(t, ra.validateConfig())
// Window size
ra.TimeWindowSize = internal.Duration{Duration: time.Duration(0)}
require.Error(t, ra.validateConfig())
ra.TimeWindowSize = internal.Duration{Duration: time.Duration(-1)}
require.Error(t, ra.validateConfig())
ra.TimeWindowSize = internal.Duration{Duration: time.Duration(1)}
require.NoError(t, ra.validateConfig())
ra.ThroughputWindowSize = internal.Duration{Duration: time.Duration(0)}
require.Error(t, ra.validateConfig())
ra.ThroughputWindowSize = internal.Duration{Duration: time.Duration(-1)}
require.Error(t, ra.validateConfig())
ra.ThroughputWindowSize = internal.Duration{Duration: time.Duration(1)}
require.NoError(t, ra.validateConfig())
// Number of windows
ra.TimeWindows = 0
require.Error(t, ra.validateConfig())
ra.TimeWindows = -1
require.Error(t, ra.validateConfig())
ra.TimeWindows = 1
require.NoError(t, ra.validateConfig())
ra.ThroughputWindows = 0
require.Error(t, ra.validateConfig())
ra.ThroughputWindows = -1
require.Error(t, ra.validateConfig())
ra.ThroughputWindows = 1
require.NoError(t, ra.validateConfig())
}
func TestRequestAggregates_manageTimeWindows_OnlyTotal(t *testing.T) {
windowSize := internal.Duration{Duration: time.Millisecond * 100}
acc := &testutil.Accumulator{}
now := time.Now()
ra := &RequestAggregates{
TimeWindows: 2,
TimeWindowSize: windowSize,
TimePercentiles: []float32{70, 80, 90},
timeTimer: time.NewTimer(windowSize.Duration),
stopTimeChan: make(chan bool, 1)}
// Add first window and start routine
ra.timeWindowSlice = append(ra.timeWindowSlice, &TimeWindow{
StartTime: now, EndTime: now.Add(windowSize.Duration), OnlyTotal: true, Percentiles: ra.TimePercentiles})
ra.wg.Add(1)
go ra.manageTimeWindows(acc)
// Check values at different points
time.Sleep(time.Millisecond * 30)
ra.timeMutex.Lock()
require.Equal(t, 1, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.timeMutex.Lock()
require.Equal(t, 2, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.timeMutex.Lock()
require.Equal(t, 2, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 1, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration), acc.Metrics[0].Time)
acc.Unlock()
// Stop and wait for the process to finish
ra.timeTimer.Stop()
ra.stopTimeChan <- true
ra.wg.Wait()
// Check that all metrics were flushed
ra.timeMutex.Lock()
require.Equal(t, 0, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 3, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[1].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[2].Time)
acc.Unlock()
}
func TestRequestAggregates_manageTimeWindows_All(t *testing.T) {
windowSize := internal.Duration{Duration: time.Millisecond * 100}
acc := &testutil.Accumulator{}
now := time.Now()
ra := &RequestAggregates{
TimeWindows: 2,
TimeWindowSize: windowSize,
TimePercentiles: []float32{70, 80, 90},
successRegexp: regexp.MustCompile(".*success.*"),
timeTimer: time.NewTimer(windowSize.Duration),
stopTimeChan: make(chan bool, 1)}
// Add first window and start routine
ra.timeWindowSlice = append(ra.timeWindowSlice, &TimeWindow{
StartTime: now, EndTime: now.Add(windowSize.Duration), OnlyTotal: false, Percentiles: ra.TimePercentiles})
ra.wg.Add(1)
go ra.manageTimeWindows(acc)
// Check values at different points
time.Sleep(time.Millisecond * 30)
ra.timeMutex.Lock()
require.Equal(t, 1, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.timeMutex.Lock()
require.Equal(t, 2, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.timeMutex.Lock()
require.Equal(t, 2, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 3, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration), acc.Metrics[0].Time)
require.Equal(t, now.Add(windowSize.Duration), acc.Metrics[1].Time)
require.Equal(t, now.Add(windowSize.Duration), acc.Metrics[2].Time)
acc.Unlock()
// Stop and wait for the process to finish
ra.timeTimer.Stop()
ra.stopTimeChan <- true
ra.wg.Wait()
// Check that all metrics were flushed
ra.timeMutex.Lock()
require.Equal(t, 0, len(ra.timeWindowSlice))
ra.timeMutex.Unlock()
acc.Lock()
require.Equal(t, 9, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[3].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[4].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[5].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[6].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[7].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[8].Time)
acc.Unlock()
}
func TestRequestAggregates_manageThroughputWindows(t *testing.T) {
windowSize := internal.Duration{Duration: time.Millisecond * 100}
acc := &testutil.Accumulator{}
now := time.Now()
ra := &RequestAggregates{
ThroughputWindows: 2,
ThroughputWindowSize: windowSize,
throughputTimer: time.NewTimer(windowSize.Duration),
stopThroughputChan: make(chan bool, 1)}
// Add first window and start routine
ra.throughputWindowSlice = append(ra.throughputWindowSlice, &ThroughputWindow{
StartTime: now, EndTime: now.Add(windowSize.Duration)})
ra.wg.Add(1)
go ra.manageThroughputWindows(acc)
// Check values at different points
time.Sleep(time.Millisecond * 30)
ra.throughputMutex.Lock()
require.Equal(t, 1, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.throughputMutex.Lock()
require.Equal(t, 2, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 0, len(acc.Metrics))
acc.Unlock()
time.Sleep(windowSize.Duration)
ra.throughputMutex.Lock()
require.Equal(t, 2, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 1, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration), acc.Metrics[0].Time)
acc.Unlock()
// Stop and wait for the process to finish
ra.throughputTimer.Stop()
ra.stopThroughputChan <- true
ra.wg.Wait()
// Check that all metrics were flushed
ra.throughputMutex.Lock()
require.Equal(t, 0, len(ra.throughputWindowSlice))
ra.throughputMutex.Unlock()
acc.Lock()
require.Equal(t, 3, len(acc.Metrics))
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[1].Time)
require.Equal(t, now.Add(windowSize.Duration).Add(windowSize.Duration).Add(windowSize.Duration), acc.Metrics[2].Time)
acc.Unlock()
}
func TestRequestAggregates_flushWindow(t *testing.T) {
acc := &testutil.Accumulator{}
now := time.Now()
windows := []Window{&ThroughputWindow{StartTime: now, EndTime: now.Add(time.Duration(60))}}
windows = flushWindow(windows, acc)
require.Equal(t, 0, len(windows))
require.Equal(t, 1, len(acc.Metrics))
require.Equal(t, MeasurementThroughput, acc.Metrics[0].Measurement)
}
func TestRequestAggregates_flushAllWindows(t *testing.T) {
acc := &testutil.Accumulator{}
now := time.Now()
windows := []Window{&ThroughputWindow{StartTime: now, EndTime: now.Add(time.Duration(60))},
&ThroughputWindow{StartTime: now.Add(time.Duration(60)), EndTime: now.Add(time.Duration(120))},
&ThroughputWindow{StartTime: now.Add(time.Duration(120)), EndTime: now.Add(time.Duration(180))}}
windows = flushAllWindows(windows, acc)
require.Equal(t, 0, len(windows))
require.Equal(t, 3, len(acc.Metrics))
}
func TestRequestAggregates_addToWindow(t *testing.T) {
now := time.Now()
var windows []Window
// Error if there are no windows (not added)
err := addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(30))})
require.Error(t, err)
// Okay when one window
firstWindow := &ThroughputWindow{StartTime: now, EndTime: now.Add(time.Duration(60))}
windows = append(windows, firstWindow)
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(30))})
require.NoError(t, err)
require.Equal(t, int64(1), firstWindow.RequestsTotal)
// Okay when timestamp equal to start of window
err = addToWindow(windows, &Request{Timestamp: now})
require.NoError(t, err)
require.Equal(t, int64(2), firstWindow.RequestsTotal)
// Error when timestamp equal to end of window
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(60))})
require.Error(t, err)
// Okay with more windows
middleWindow := &ThroughputWindow{StartTime: now.Add(time.Duration(60)), EndTime: now.Add(time.Duration(120))}
lastWindow := &ThroughputWindow{StartTime: now.Add(time.Duration(120)), EndTime: now.Add(time.Duration(180))}
windows = append(windows, middleWindow)
windows = append(windows, lastWindow)
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(90))})
require.NoError(t, err)
require.Equal(t, int64(1), middleWindow.RequestsTotal)
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(150))})
require.NoError(t, err)
require.Equal(t, int64(1), lastWindow.RequestsTotal)
// Error when later than last window
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(220))})
require.Error(t, err)
// Error when before first window
err = addToWindow(windows, &Request{Timestamp: now.Add(time.Duration(-20))})
require.Error(t, err)
}