478 lines
15 KiB
Go
478 lines
15 KiB
Go
package application_insights
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import (
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"math"
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"testing"
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"time"
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"github.com/Microsoft/ApplicationInsights-Go/appinsights"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/internal"
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"github.com/influxdata/telegraf/metric"
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"github.com/influxdata/telegraf/plugins/outputs/application_insights/mocks"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/mock"
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)
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func TestConnectFailsIfNoIkey(t *testing.T) {
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assert := assert.New(t)
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transmitter := new(mocks.Transmitter)
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transmitter.On("Close").Return(closed)
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ai := ApplicationInsights{
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transmitter: transmitter,
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// Very long timeout to ensure we do not rely on timeouts for closing the transmitter
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Timeout: internal.Duration{Duration: time.Hour},
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}
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err := ai.Connect()
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assert.Error(err)
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}
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func TestOutputCloseTimesOut(t *testing.T) {
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assert := assert.New(t)
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transmitter := new(mocks.Transmitter)
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transmitter.On("Close").Return(unfinished)
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ai := ApplicationInsights{
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transmitter: transmitter,
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Timeout: internal.Duration{Duration: time.Millisecond * 50},
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}
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err := ai.Close()
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assert.NoError(err)
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transmitter.AssertCalled(t, "Close")
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}
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func TestCloseRemovesDiagMsgListener(t *testing.T) {
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assert := assert.New(t)
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transmitter := new(mocks.Transmitter)
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transmitter.On("Close").Return(closed)
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diagMsgListener := new(mocks.DiagnosticsMessageListener)
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diagMsgListener.On("Remove")
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diagMsgSubscriber := new(mocks.DiagnosticsMessageSubscriber)
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diagMsgSubscriber.
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On("Subscribe", mock.AnythingOfType("appinsights.DiagnosticsMessageHandler")).
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Return(diagMsgListener)
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ai := ApplicationInsights{
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transmitter: transmitter,
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Timeout: internal.Duration{Duration: time.Hour},
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EnableDiagnosticLogging: true,
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diagMsgSubscriber: diagMsgSubscriber,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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}
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err := ai.Connect()
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assert.NoError(err)
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diagMsgSubscriber.AssertCalled(t, "Subscribe", mock.AnythingOfType("appinsights.DiagnosticsMessageHandler"))
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err = ai.Close()
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assert.NoError(err)
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transmitter.AssertCalled(t, "Close")
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diagMsgListener.AssertCalled(t, "Remove")
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}
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func TestAggregateMetricCreated(t *testing.T) {
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tests := []struct {
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name string
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fields map[string]interface{}
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valueField string
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countField string
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additionalMetricValueFields []string
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}{
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{"value and count", map[string]interface{}{"value": 16.5, "count": 23}, "value", "count", nil},
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{"value and samples", map[string]interface{}{"value": 16.5, "samples": 23}, "value", "samples", nil},
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{"sum and count", map[string]interface{}{"sum": 16.5, "count": 23}, "sum", "count", nil},
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{"sum and samples", map[string]interface{}{"samples": 23, "sum": 16.5}, "sum", "samples", nil},
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{"value and count, sum is wrong type", map[string]interface{}{"sum": "J23", "value": 16.5, "count": 23}, "value", "count", nil},
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{
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"with aggregates",
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map[string]interface{}{
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"value": 16.5,
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"count": 23,
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"min": -2.1,
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"max": 34,
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"stddev": 3.4,
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},
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"value",
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"count",
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nil,
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},
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{
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"some aggregates with invalid values",
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map[string]interface{}{
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"value": 16.5,
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"count": 23,
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"min": "min",
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"max": []float64{3.4, 5.6},
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"stddev": struct {
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name string
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value float64
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}{"delta", 7.0},
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},
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"value",
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"count",
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nil,
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},
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{
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"aggregate with additional fields",
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map[string]interface{}{"value": 16.5, "samples": 23, "alpha": -34e12, "bravo": -3, "charlie": "charlie"},
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"value",
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"samples",
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[]string{"alpha", "bravo"},
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},
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}
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for _, tt := range tests {
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tf := func(t *testing.T) {
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assert := assert.New(t)
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now := time.Now().UTC()
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transmitter := new(mocks.Transmitter)
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transmitter.On("Track", mock.Anything)
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metricName := "ShouldBeAggregateMetric"
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m, err := metric.New(
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metricName,
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nil, // tags
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tt.fields,
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now,
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)
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assert.NoError(err)
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ai := ApplicationInsights{
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transmitter: transmitter,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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}
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err = ai.Connect()
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assert.NoError(err)
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mSet := []telegraf.Metric{m}
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ai.Write(mSet)
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transmitter.AssertNumberOfCalls(t, "Track", 1+len(tt.additionalMetricValueFields))
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var pAggregateTelemetry *appinsights.AggregateMetricTelemetry
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assert.IsType(pAggregateTelemetry, transmitter.Calls[len(transmitter.Calls)-1].Arguments.Get(0), "Expected last telemetry to be AggregateMetricTelemetry")
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aggregateTelemetry := transmitter.Calls[len(transmitter.Calls)-1].Arguments.Get(0).(*appinsights.AggregateMetricTelemetry)
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verifyAggregateTelemetry(assert, m, tt.valueField, tt.countField, aggregateTelemetry)
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verifyAdditionalTelemetry(assert, m, transmitter, tt.additionalMetricValueFields, metricName)
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}
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t.Run(tt.name, tf)
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}
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}
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func TestSimpleMetricCreated(t *testing.T) {
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tests := []struct {
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name string
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fields map[string]interface{}
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primaryMetricValueField string
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additionalMetricValueFields []string
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}{
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{"just a single value field", map[string]interface{}{"value": 16.5}, "value", nil},
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{"single field not named value", map[string]interface{}{"first": 32.9}, "first", nil},
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{"value but no count", map[string]interface{}{"value": 16.5, "other": "bulba"}, "", []string{"value"}},
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{"count but no value", map[string]interface{}{"v1": "v1Val", "count": 23}, "", []string{"count"}},
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{"neither value nor count", map[string]interface{}{"v1": "alpha", "v2": 45.8}, "", []string{"v2"}},
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{"value is of wrong type", map[string]interface{}{"value": "alpha", "count": 15}, "", []string{"count"}},
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{"count is of wrong type", map[string]interface{}{"value": 23.77, "count": 7.5}, "", []string{"count", "value"}},
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{"count is out of range", map[string]interface{}{"value": -98.45e4, "count": math.MaxUint64 - uint64(20)}, "", []string{"value", "count"}},
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{"several additional fields", map[string]interface{}{"alpha": 10, "bravo": "bravo", "charlie": 30, "delta": 40.7}, "", []string{"alpha", "charlie", "delta"}},
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}
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for _, tt := range tests {
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tf := func(t *testing.T) {
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assert := assert.New(t)
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now := time.Now().UTC()
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transmitter := new(mocks.Transmitter)
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transmitter.On("Track", mock.Anything)
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metricName := "ShouldBeSimpleMetric"
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m, err := metric.New(
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metricName,
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nil, // tags
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tt.fields,
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now,
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)
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assert.NoError(err)
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ai := ApplicationInsights{
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transmitter: transmitter,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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}
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err = ai.Connect()
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assert.NoError(err)
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mSet := []telegraf.Metric{m}
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ai.Write(mSet)
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expectedNumberOfCalls := len(tt.additionalMetricValueFields)
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if tt.primaryMetricValueField != "" {
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expectedNumberOfCalls++
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}
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transmitter.AssertNumberOfCalls(t, "Track", expectedNumberOfCalls)
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if tt.primaryMetricValueField != "" {
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var pMetricTelemetry *appinsights.MetricTelemetry
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assert.IsType(pMetricTelemetry, transmitter.Calls[0].Arguments.Get(0), "First created telemetry should be simple MetricTelemetry")
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metricTelemetry := transmitter.Calls[0].Arguments.Get(0).(*appinsights.MetricTelemetry)
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var expectedTelemetryName string
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if tt.primaryMetricValueField == "value" {
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expectedTelemetryName = m.Name()
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} else {
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expectedTelemetryName = m.Name() + "_" + tt.primaryMetricValueField
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}
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verifySimpleTelemetry(assert, m, tt.primaryMetricValueField, expectedTelemetryName, metricTelemetry)
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}
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verifyAdditionalTelemetry(assert, m, transmitter, tt.additionalMetricValueFields, metricName)
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}
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t.Run(tt.name, tf)
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}
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}
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func TestTagsAppliedToTelemetry(t *testing.T) {
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tests := []struct {
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name string
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fields map[string]interface{}
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tags map[string]string
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metricValueFields []string
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}{
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{
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"value but no count",
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map[string]interface{}{"value": 16.5, "alpha": 3.5, "bravo": 17},
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map[string]string{"alpha": "a tag is not a field", "charlie": "charlie"},
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[]string{"value", "alpha", "bravo"},
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},
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}
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for _, tt := range tests {
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tf := func(t *testing.T) {
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assert := assert.New(t)
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now := time.Now().UTC()
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transmitter := new(mocks.Transmitter)
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transmitter.On("Track", mock.Anything)
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metricName := "ShouldBeSimpleMetric"
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m, err := metric.New(
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metricName,
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tt.tags,
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tt.fields,
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now,
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)
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assert.NoError(err)
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ai := ApplicationInsights{
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transmitter: transmitter,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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}
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err = ai.Connect()
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assert.NoError(err)
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mSet := []telegraf.Metric{m}
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ai.Write(mSet)
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transmitter.AssertNumberOfCalls(t, "Track", len(tt.metricValueFields))
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transmitter.AssertCalled(t, "Track", mock.AnythingOfType("*appinsights.MetricTelemetry"))
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// Will verify that all original tags are present in telemetry.Properties map
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verifyAdditionalTelemetry(assert, m, transmitter, tt.metricValueFields, metricName)
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}
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t.Run(tt.name, tf)
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}
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}
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func TestContextTagsSetOnSimpleTelemetry(t *testing.T) {
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assert := assert.New(t)
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now := time.Now().UTC()
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transmitter := new(mocks.Transmitter)
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transmitter.On("Track", mock.Anything)
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m, err := metric.New(
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"SimpleMetric",
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map[string]string{"kubernetes_container_name": "atcsvc", "kubernetes_pod_name": "bunkie17554"},
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map[string]interface{}{"value": 23.0},
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now,
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)
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assert.NoError(err)
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ai := ApplicationInsights{
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transmitter: transmitter,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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ContextTagSources: map[string]string{
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"ai.cloud.role": "kubernetes_container_name",
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"ai.cloud.roleInstance": "kubernetes_pod_name",
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"ai.user.id": "nonexistent",
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},
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}
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err = ai.Connect()
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assert.NoError(err)
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mSet := []telegraf.Metric{m}
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ai.Write(mSet)
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transmitter.AssertNumberOfCalls(t, "Track", 1)
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metricTelemetry := transmitter.Calls[0].Arguments.Get(0).(*appinsights.MetricTelemetry)
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cloudTags := metricTelemetry.Tags.Cloud()
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assert.Equal("atcsvc", cloudTags.GetRole())
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assert.Equal("bunkie17554", cloudTags.GetRoleInstance())
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}
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func TestContextTagsSetOnAggregateTelemetry(t *testing.T) {
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assert := assert.New(t)
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now := time.Now().UTC()
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transmitter := new(mocks.Transmitter)
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transmitter.On("Track", mock.Anything)
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m, err := metric.New(
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"AggregateMetric",
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map[string]string{"kubernetes_container_name": "atcsvc", "kubernetes_pod_name": "bunkie17554"},
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map[string]interface{}{"value": 23.0, "count": 5},
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now,
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)
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assert.NoError(err)
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ai := ApplicationInsights{
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transmitter: transmitter,
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InstrumentationKey: "1234", // Fake, but necessary to enable tracking
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ContextTagSources: map[string]string{
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"ai.cloud.role": "kubernetes_container_name",
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"ai.cloud.roleInstance": "kubernetes_pod_name",
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"ai.user.id": "nonexistent",
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},
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}
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err = ai.Connect()
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assert.NoError(err)
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mSet := []telegraf.Metric{m}
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ai.Write(mSet)
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transmitter.AssertNumberOfCalls(t, "Track", 1)
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metricTelemetry := transmitter.Calls[0].Arguments.Get(0).(*appinsights.AggregateMetricTelemetry)
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cloudTags := metricTelemetry.Tags.Cloud()
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assert.Equal("atcsvc", cloudTags.GetRole())
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assert.Equal("bunkie17554", cloudTags.GetRoleInstance())
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}
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func closed() <-chan struct{} {
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closed := make(chan struct{})
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close(closed)
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return closed
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}
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func unfinished() <-chan struct{} {
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unfinished := make(chan struct{})
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return unfinished
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}
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func verifyAggregateTelemetry(
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assert *assert.Assertions,
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metric telegraf.Metric,
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valueField string,
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countField string,
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telemetry *appinsights.AggregateMetricTelemetry,
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) {
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verifyAggregateField := func(fieldName string, telemetryValue float64) {
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metricRawFieldValue, found := metric.Fields()[fieldName]
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if !found {
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return
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}
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if _, err := toFloat64(metricRawFieldValue); err == nil {
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assert.EqualValues(metricRawFieldValue, telemetryValue, "Telemetry property %s does not match the metric field", fieldName)
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}
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}
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assert.Equal(metric.Name(), telemetry.Name, "Telemetry name should be the same as metric name")
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assert.EqualValues(metric.Fields()[valueField], telemetry.Value, "Telemetry value does not match metric value field")
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assert.EqualValues(metric.Fields()[countField], telemetry.Count, "Telemetry sample count does not mach metric sample count field")
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verifyAggregateField("min", telemetry.Min)
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verifyAggregateField("max", telemetry.Max)
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verifyAggregateField("stdev", telemetry.StdDev)
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verifyAggregateField("variance", telemetry.Variance)
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assert.Equal(metric.Time(), telemetry.Timestamp, "Telemetry and metric timestamps do not match")
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assertMapContains(assert, metric.Tags(), telemetry.Properties)
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}
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func verifySimpleTelemetry(
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assert *assert.Assertions,
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metric telegraf.Metric,
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valueField string,
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expectedTelemetryName string,
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telemetry *appinsights.MetricTelemetry,
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) {
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assert.Equal(expectedTelemetryName, telemetry.Name, "Telemetry name is not what was expected")
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assert.EqualValues(metric.Fields()[valueField], telemetry.Value, "Telemetry value does not match metric value field")
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assert.Equal(metric.Time(), telemetry.Timestamp, "Telemetry and metric timestamps do not match")
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assertMapContains(assert, metric.Tags(), telemetry.Properties)
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}
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func verifyAdditionalTelemetry(
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assert *assert.Assertions,
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metric telegraf.Metric,
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transmitter *mocks.Transmitter,
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additionalMetricValueFields []string,
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telemetryNamePrefix string,
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) {
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for _, fieldName := range additionalMetricValueFields {
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expectedTelemetryName := telemetryNamePrefix + "_" + fieldName
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telemetry := findTransmittedTelemetry(transmitter, expectedTelemetryName)
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assert.NotNil(telemetry, "Expected telemetry named %s to be created, but could not find it", expectedTelemetryName)
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if telemetry != nil {
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verifySimpleTelemetry(assert, metric, fieldName, expectedTelemetryName, telemetry)
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}
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}
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}
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func findTransmittedTelemetry(transmitter *mocks.Transmitter, telemetryName string) *appinsights.MetricTelemetry {
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for _, call := range transmitter.Calls {
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telemetry, isMetricTelemetry := call.Arguments.Get(0).(*appinsights.MetricTelemetry)
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if isMetricTelemetry && telemetry.Name == telemetryName {
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return telemetry
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}
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}
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return nil
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}
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func keys(m map[string]string) []string {
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keys := make([]string, 0, len(m))
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for k := range m {
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keys = append(keys, k)
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}
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return keys
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}
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func assertMapContains(assert *assert.Assertions, expected, actual map[string]string) {
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if expected == nil && actual == nil {
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return
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}
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assert.NotNil(expected, "Maps not equal: expected is nil but actual is not")
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assert.NotNil(actual, "Maps not equal: actual is nil but expected is not")
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for k, v := range expected {
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av, ok := actual[k]
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assert.True(ok, "Actual map does not contain a value for key '%s'", k)
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assert.Equal(v, av, "The expected value for key '%s' is '%s' but the actual value is '%s", k, v, av)
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}
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}
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