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connector_test.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package spanmetricsconnector
import (
"context"
"fmt"
"sync"
"testing"
"time"
"github.com/lightstep/go-expohisto/structure"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tilinna/clock"
"go.opentelemetry.io/collector/component/componenttest"
"go.opentelemetry.io/collector/connector/connectortest"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/consumer/consumertest"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.opentelemetry.io/collector/pdata/ptrace"
conventions "go.opentelemetry.io/collector/semconv/v1.6.1"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"go.uber.org/zap/zaptest"
"go.uber.org/zap/zaptest/observer"
"google.golang.org/grpc/metadata"
"github.com/open-telemetry/opentelemetry-collector-contrib/connector/spanmetricsconnector/internal/metrics"
)
const (
stringAttrName = "stringAttrName"
intAttrName = "intAttrName"
doubleAttrName = "doubleAttrName"
boolAttrName = "boolAttrName"
nullAttrName = "nullAttrName"
mapAttrName = "mapAttrName"
arrayAttrName = "arrayAttrName"
notInSpanAttrName0 = "shouldBeInMetric"
notInSpanAttrName1 = "shouldNotBeInMetric"
regionResourceAttrName = "region"
exceptionTypeAttrName = "exception.type"
dimensionsCacheSize = 2
resourceMetricsCacheSize = 5
sampleRegion = "us-east-1"
sampleDuration = float64(11)
)
// metricID represents the minimum attributes that uniquely identifies a metric in our tests.
type metricID struct {
service string
name string
kind string
statusCode string
}
type metricDataPoint interface {
Attributes() pcommon.Map
}
type serviceSpans struct {
serviceName string
spans []span
}
type span struct {
name string
kind ptrace.SpanKind
statusCode ptrace.StatusCode
traceID [16]byte
spanID [8]byte
}
// verifyDisabledHistogram expects that histograms are disabled.
func verifyDisabledHistogram(t testing.TB, input pmetric.Metrics) bool {
for i := 0; i < input.ResourceMetrics().Len(); i++ {
rm := input.ResourceMetrics().At(i)
ism := rm.ScopeMetrics()
// Checking all metrics, naming notice: ismC/mC - C here is for Counter.
for ismC := 0; ismC < ism.Len(); ismC++ {
m := ism.At(ismC).Metrics()
for mC := 0; mC < m.Len(); mC++ {
metric := m.At(mC)
assert.NotEqual(t, pmetric.MetricTypeExponentialHistogram, metric.Type())
assert.NotEqual(t, pmetric.MetricTypeHistogram, metric.Type())
}
}
}
return true
}
func verifyExemplarsExist(t testing.TB, input pmetric.Metrics) bool {
for i := 0; i < input.ResourceMetrics().Len(); i++ {
rm := input.ResourceMetrics().At(i)
ism := rm.ScopeMetrics()
// Checking all metrics, naming notice: ismC/mC - C here is for Counter.
for ismC := 0; ismC < ism.Len(); ismC++ {
m := ism.At(ismC).Metrics()
for mC := 0; mC < m.Len(); mC++ {
metric := m.At(mC)
if metric.Type() != pmetric.MetricTypeHistogram {
continue
}
dps := metric.Histogram().DataPoints()
for dp := 0; dp < dps.Len(); dp++ {
d := dps.At(dp)
assert.True(t, d.Exemplars().Len() > 0)
}
}
}
}
return true
}
// verifyConsumeMetricsInputCumulative expects one accumulation of metrics, and marked as cumulative
func verifyConsumeMetricsInputCumulative(t testing.TB, input pmetric.Metrics) bool {
return verifyConsumeMetricsInput(t, input, pmetric.AggregationTemporalityCumulative, 1)
}
func verifyBadMetricsOkay(_ testing.TB, _ pmetric.Metrics) bool {
return true // Validating no exception
}
// verifyConsumeMetricsInputDelta expects one accumulation of metrics, and marked as delta
func verifyConsumeMetricsInputDelta(t testing.TB, input pmetric.Metrics) bool {
return verifyConsumeMetricsInput(t, input, pmetric.AggregationTemporalityDelta, 1)
}
// verifyMultipleCumulativeConsumptions expects the amount of accumulations as kept track of by numCumulativeConsumptions.
// numCumulativeConsumptions acts as a multiplier for the values, since the cumulative metrics are additive.
func verifyMultipleCumulativeConsumptions() func(t testing.TB, input pmetric.Metrics) bool {
numCumulativeConsumptions := 0
return func(t testing.TB, input pmetric.Metrics) bool {
numCumulativeConsumptions++
return verifyConsumeMetricsInput(t, input, pmetric.AggregationTemporalityCumulative, numCumulativeConsumptions)
}
}
// verifyConsumeMetricsInput verifies the input of the ConsumeMetrics call from this connector.
// This is the best point to verify the computed metrics from spans are as expected.
func verifyConsumeMetricsInput(t testing.TB, input pmetric.Metrics, expectedTemporality pmetric.AggregationTemporality, numCumulativeConsumptions int) bool {
require.Equal(t, 6, input.DataPointCount(),
"Should be 3 for each of call count and latency split into two resource scopes defined by: "+
"service-a: service-a (server kind) -> service-a (client kind) and "+
"service-b: service-b (service kind)",
)
require.Equal(t, 2, input.ResourceMetrics().Len())
for i := 0; i < input.ResourceMetrics().Len(); i++ {
rm := input.ResourceMetrics().At(i)
var numDataPoints int
val, ok := rm.Resource().Attributes().Get(serviceNameKey)
require.True(t, ok)
serviceName := val.AsString()
if serviceName == "service-a" {
numDataPoints = 2
} else if serviceName == "service-b" {
numDataPoints = 1
}
ilm := rm.ScopeMetrics()
require.Equal(t, 1, ilm.Len())
assert.Equal(t, "spanmetricsconnector", ilm.At(0).Scope().Name())
m := ilm.At(0).Metrics()
require.Equal(t, 2, m.Len(), "only sum and histogram metric types generated")
// validate calls - sum metrics
metric := m.At(0)
assert.Equal(t, metricNameCalls, metric.Name())
assert.Equal(t, expectedTemporality, metric.Sum().AggregationTemporality())
assert.True(t, metric.Sum().IsMonotonic())
seenMetricIDs := make(map[metricID]bool)
callsDps := metric.Sum().DataPoints()
require.Equal(t, numDataPoints, callsDps.Len())
for dpi := 0; dpi < numDataPoints; dpi++ {
dp := callsDps.At(dpi)
assert.Equal(t,
int64(numCumulativeConsumptions),
dp.IntValue(),
"There should only be one metric per Service/name/kind combination",
)
assert.NotZero(t, dp.StartTimestamp(), "StartTimestamp should be set")
assert.NotZero(t, dp.Timestamp(), "Timestamp should be set")
verifyMetricLabels(dp, t, seenMetricIDs)
}
// validate latency - histogram metrics
metric = m.At(1)
assert.Equal(t, metricNameDuration, metric.Name())
assert.Equal(t, defaultUnit.String(), metric.Unit())
if metric.Type() == pmetric.MetricTypeExponentialHistogram {
hist := metric.ExponentialHistogram()
assert.Equal(t, expectedTemporality, hist.AggregationTemporality())
verifyExponentialHistogramDataPoints(t, hist.DataPoints(), numDataPoints, numCumulativeConsumptions)
} else {
hist := metric.Histogram()
assert.Equal(t, expectedTemporality, hist.AggregationTemporality())
verifyExplicitHistogramDataPoints(t, hist.DataPoints(), numDataPoints, numCumulativeConsumptions)
}
}
return true
}
func verifyExplicitHistogramDataPoints(t testing.TB, dps pmetric.HistogramDataPointSlice, numDataPoints, numCumulativeConsumptions int) {
seenMetricIDs := make(map[metricID]bool)
require.Equal(t, numDataPoints, dps.Len())
for dpi := 0; dpi < numDataPoints; dpi++ {
dp := dps.At(dpi)
assert.Equal(
t,
sampleDuration*float64(numCumulativeConsumptions),
dp.Sum(),
"Should be a 11ms duration measurement, multiplied by the number of stateful accumulations.")
assert.NotZero(t, dp.Timestamp(), "Timestamp should be set")
// Verify bucket counts.
// The bucket counts should be 1 greater than the explicit bounds as documented in:
// https://github.com/open-telemetry/opentelemetry-proto/blob/main/opentelemetry/proto/metrics/v1/metrics.proto.
assert.Equal(t, dp.ExplicitBounds().Len()+1, dp.BucketCounts().Len())
// Find the bucket index where the 11ms duration should belong in.
var foundDurationIndex int
for foundDurationIndex = 0; foundDurationIndex < dp.ExplicitBounds().Len(); foundDurationIndex++ {
if dp.ExplicitBounds().At(foundDurationIndex) > sampleDuration {
break
}
}
// Then verify that all histogram buckets are empty except for the bucket with the 11ms duration.
var wantBucketCount uint64
for bi := 0; bi < dp.BucketCounts().Len(); bi++ {
wantBucketCount = 0
if bi == foundDurationIndex {
wantBucketCount = uint64(numCumulativeConsumptions)
}
assert.Equal(t, wantBucketCount, dp.BucketCounts().At(bi))
}
verifyMetricLabels(dp, t, seenMetricIDs)
}
}
func verifyExponentialHistogramDataPoints(t testing.TB, dps pmetric.ExponentialHistogramDataPointSlice, numDataPoints, numCumulativeConsumptions int) {
seenMetricIDs := make(map[metricID]bool)
require.Equal(t, numDataPoints, dps.Len())
for dpi := 0; dpi < numDataPoints; dpi++ {
dp := dps.At(dpi)
assert.Equal(
t,
sampleDuration*float64(numCumulativeConsumptions),
dp.Sum(),
"Should be a 11ms duration measurement, multiplied by the number of stateful accumulations.")
assert.Equal(t, uint64(numCumulativeConsumptions), dp.Count())
assert.Equal(t, []uint64{uint64(numCumulativeConsumptions)}, dp.Positive().BucketCounts().AsRaw())
assert.NotZero(t, dp.Timestamp(), "Timestamp should be set")
verifyMetricLabels(dp, t, seenMetricIDs)
}
}
func verifyMetricLabels(dp metricDataPoint, t testing.TB, seenMetricIDs map[metricID]bool) {
mID := metricID{}
wantDimensions := map[string]pcommon.Value{
stringAttrName: pcommon.NewValueStr("stringAttrValue"),
intAttrName: pcommon.NewValueInt(99),
doubleAttrName: pcommon.NewValueDouble(99.99),
boolAttrName: pcommon.NewValueBool(true),
nullAttrName: pcommon.NewValueEmpty(),
arrayAttrName: pcommon.NewValueSlice(),
mapAttrName: pcommon.NewValueMap(),
notInSpanAttrName0: pcommon.NewValueStr("defaultNotInSpanAttrVal"),
regionResourceAttrName: pcommon.NewValueStr(sampleRegion),
}
dp.Attributes().Range(func(k string, v pcommon.Value) bool {
switch k {
case serviceNameKey:
mID.service = v.Str()
case spanNameKey:
mID.name = v.Str()
case spanKindKey:
mID.kind = v.Str()
case statusCodeKey:
mID.statusCode = v.Str()
case notInSpanAttrName1:
assert.Fail(t, notInSpanAttrName1+" should not be in this metric")
default:
assert.Equal(t, wantDimensions[k], v)
delete(wantDimensions, k)
}
return true
})
assert.Empty(t, wantDimensions, "Did not see all expected dimensions in metric. Missing: ", wantDimensions)
// Service/name/kind should be a unique metric.
assert.False(t, seenMetricIDs[mID])
seenMetricIDs[mID] = true
}
func buildBadSampleTrace() ptrace.Traces {
badTrace := buildSampleTrace()
span := badTrace.ResourceSpans().At(0).ScopeSpans().At(0).Spans().At(0)
now := time.Now()
// Flipping timestamp for a bad duration
span.SetEndTimestamp(pcommon.NewTimestampFromTime(now))
span.SetStartTimestamp(
pcommon.NewTimestampFromTime(now.Add(time.Duration(sampleDuration) * time.Millisecond)))
return badTrace
}
// buildSampleTrace builds the following trace:
//
// service-a/ping (server) ->
// service-a/ping (client) ->
// service-b/ping (server)
func buildSampleTrace() ptrace.Traces {
traces := ptrace.NewTraces()
initServiceSpans(
serviceSpans{
serviceName: "service-a",
spans: []span{
{
name: "/ping",
kind: ptrace.SpanKindServer,
statusCode: ptrace.StatusCodeOk,
traceID: [16]byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10},
spanID: [8]byte{0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18},
},
{
name: "/ping",
kind: ptrace.SpanKindClient,
statusCode: ptrace.StatusCodeOk,
traceID: [16]byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10},
spanID: [8]byte{0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x10},
},
},
}, traces.ResourceSpans().AppendEmpty())
initServiceSpans(
serviceSpans{
serviceName: "service-b",
spans: []span{
{
name: "/ping",
kind: ptrace.SpanKindServer,
statusCode: ptrace.StatusCodeError,
traceID: [16]byte{0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x10},
spanID: [8]byte{0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18},
},
},
}, traces.ResourceSpans().AppendEmpty())
initServiceSpans(serviceSpans{}, traces.ResourceSpans().AppendEmpty())
return traces
}
func initServiceSpans(serviceSpans serviceSpans, spans ptrace.ResourceSpans) {
if serviceSpans.serviceName != "" {
spans.Resource().Attributes().PutStr(conventions.AttributeServiceName, serviceSpans.serviceName)
}
spans.Resource().Attributes().PutStr(regionResourceAttrName, sampleRegion)
ils := spans.ScopeSpans().AppendEmpty()
for _, span := range serviceSpans.spans {
initSpan(span, ils.Spans().AppendEmpty())
}
}
func initSpan(span span, s ptrace.Span) {
s.SetName(span.name)
s.SetKind(span.kind)
s.Status().SetCode(span.statusCode)
now := time.Now()
s.SetStartTimestamp(pcommon.NewTimestampFromTime(now))
s.SetEndTimestamp(
pcommon.NewTimestampFromTime(now.Add(time.Duration(sampleDuration) * time.Millisecond)))
s.Attributes().PutStr(stringAttrName, "stringAttrValue")
s.Attributes().PutInt(intAttrName, 99)
s.Attributes().PutDouble(doubleAttrName, 99.99)
s.Attributes().PutBool(boolAttrName, true)
s.Attributes().PutEmpty(nullAttrName)
s.Attributes().PutEmptyMap(mapAttrName)
s.Attributes().PutEmptySlice(arrayAttrName)
s.SetTraceID(pcommon.TraceID(span.traceID))
s.SetSpanID(pcommon.SpanID(span.spanID))
e := s.Events().AppendEmpty()
e.SetName("exception")
e.Attributes().PutStr(exceptionTypeAttrName, "NullPointerException")
}
func disabledExemplarsConfig() ExemplarsConfig {
return ExemplarsConfig{
Enabled: false,
}
}
func enabledExemplarsConfig() ExemplarsConfig {
return ExemplarsConfig{
Enabled: true,
}
}
func enabledEventsConfig() EventsConfig {
return EventsConfig{
Enabled: true,
Dimensions: []Dimension{{Name: "exception.type"}},
}
}
func disabledEventsConfig() EventsConfig {
return EventsConfig{
Enabled: false,
}
}
func explicitHistogramsConfig() HistogramConfig {
return HistogramConfig{
Unit: defaultUnit,
Explicit: &ExplicitHistogramConfig{
Buckets: []time.Duration{4 * time.Second, 6 * time.Second, 8 * time.Second},
},
}
}
func exponentialHistogramsConfig() HistogramConfig {
return HistogramConfig{
Unit: defaultUnit,
Exponential: &ExponentialHistogramConfig{
MaxSize: 10,
},
}
}
func disabledHistogramsConfig() HistogramConfig {
return HistogramConfig{
Unit: defaultUnit,
Disable: true,
}
}
func newConnectorImp(defaultNullValue *string, histogramConfig func() HistogramConfig, exemplarsConfig func() ExemplarsConfig, eventsConfig func() EventsConfig, temporality string, expiration time.Duration, resourceMetricsKeyAttributes []string, deltaTimestampCacheSize int, excludedDimensions ...string) (*connectorImp, *clock.Mock, error) {
cfg := &Config{
AggregationTemporality: temporality,
Histogram: histogramConfig(),
Exemplars: exemplarsConfig(),
ExcludeDimensions: excludedDimensions,
DimensionsCacheSize: dimensionsCacheSize,
ResourceMetricsCacheSize: resourceMetricsCacheSize,
ResourceMetricsKeyAttributes: resourceMetricsKeyAttributes,
Dimensions: []Dimension{
// Set nil defaults to force a lookup for the attribute in the span.
{stringAttrName, nil},
{intAttrName, nil},
{doubleAttrName, nil},
{boolAttrName, nil},
{mapAttrName, nil},
{arrayAttrName, nil},
{nullAttrName, defaultNullValue},
// Add a default value for an attribute that doesn't exist in a span
{notInSpanAttrName0, stringp("defaultNotInSpanAttrVal")},
// Leave the default value unset to test that this dimension should not be added to the metric.
{notInSpanAttrName1, nil},
// Add a resource attribute to test "process" attributes like IP, host, region, cluster, etc.
{regionResourceAttrName, nil},
},
Events: eventsConfig(),
MetricsExpiration: expiration,
TimestampCacheSize: &deltaTimestampCacheSize,
}
mockClock := clock.NewMock(time.Now())
ticker := mockClock.NewTicker(time.Nanosecond)
c, err := newConnector(zap.NewNop(), cfg, ticker)
if err != nil {
return nil, nil, err
}
c.metricsConsumer = consumertest.NewNop()
return c, mockClock, nil
}
func stringp(str string) *string {
return &str
}
func TestBuildKeySameServiceNameCharSequence(t *testing.T) {
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
c, err := newConnector(zaptest.NewLogger(t), cfg, nil)
require.NoError(t, err)
span0 := ptrace.NewSpan()
span0.SetName("c")
k0 := c.buildKey("ab", span0, nil, pcommon.NewMap())
span1 := ptrace.NewSpan()
span1.SetName("bc")
k1 := c.buildKey("a", span1, nil, pcommon.NewMap())
assert.NotEqual(t, k0, k1)
assert.Equal(t, metrics.Key("ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET"), k0)
assert.Equal(t, metrics.Key("a\u0000bc\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET"), k1)
}
func TestBuildKeyExcludeDimensionsAll(t *testing.T) {
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
cfg.ExcludeDimensions = []string{"span.kind", "service.name", "span.name", "status.code"}
c, err := newConnector(zaptest.NewLogger(t), cfg, nil)
require.NoError(t, err)
span0 := ptrace.NewSpan()
span0.SetName("spanName")
k0 := c.buildKey("serviceName", span0, nil, pcommon.NewMap())
assert.Equal(t, metrics.Key(""), k0)
}
func TestBuildKeyExcludeWrongDimensions(t *testing.T) {
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
cfg.ExcludeDimensions = []string{"span.kind", "service.name.wrong.name", "span.name", "status.code"}
c, err := newConnector(zaptest.NewLogger(t), cfg, nil)
require.NoError(t, err)
span0 := ptrace.NewSpan()
span0.SetName("spanName")
k0 := c.buildKey("serviceName", span0, nil, pcommon.NewMap())
assert.Equal(t, metrics.Key("serviceName"), k0)
}
func TestBuildKeyWithDimensions(t *testing.T) {
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
c, err := newConnector(zaptest.NewLogger(t), cfg, nil)
require.NoError(t, err)
defaultFoo := pcommon.NewValueStr("bar")
for _, tc := range []struct {
name string
optionalDims []dimension
resourceAttrMap map[string]any
spanAttrMap map[string]any
wantKey string
}{
{
name: "nil optionalDims",
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET",
},
{
name: "neither span nor resource contains key, dim provides default",
optionalDims: []dimension{
{name: "foo", value: &defaultFoo},
},
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET\u0000bar",
},
{
name: "neither span nor resource contains key, dim provides no default",
optionalDims: []dimension{
{name: "foo"},
},
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET",
},
{
name: "span attribute contains dimension",
optionalDims: []dimension{
{name: "foo"},
},
spanAttrMap: map[string]any{
"foo": 99,
},
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET\u000099",
},
{
name: "resource attribute contains dimension",
optionalDims: []dimension{
{name: "foo"},
},
resourceAttrMap: map[string]any{
"foo": 99,
},
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET\u000099",
},
{
name: "both span and resource attribute contains dimension, should prefer span attribute",
optionalDims: []dimension{
{name: "foo"},
},
spanAttrMap: map[string]any{
"foo": 100,
},
resourceAttrMap: map[string]any{
"foo": 99,
},
wantKey: "ab\u0000c\u0000SPAN_KIND_UNSPECIFIED\u0000STATUS_CODE_UNSET\u0000100",
},
} {
t.Run(tc.name, func(t *testing.T) {
resAttr := pcommon.NewMap()
assert.NoError(t, resAttr.FromRaw(tc.resourceAttrMap))
span0 := ptrace.NewSpan()
assert.NoError(t, span0.Attributes().FromRaw(tc.spanAttrMap))
span0.SetName("c")
key := c.buildKey("ab", span0, tc.optionalDims, resAttr)
assert.Equal(t, metrics.Key(tc.wantKey), key)
})
}
}
func TestStart(t *testing.T) {
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
createParams := connectortest.NewNopCreateSettings()
conn, err := factory.CreateTracesToMetrics(context.Background(), createParams, cfg, consumertest.NewNop())
require.NoError(t, err)
smc := conn.(*connectorImp)
ctx := context.Background()
err = smc.Start(ctx, componenttest.NewNopHost())
defer func() { sdErr := smc.Shutdown(ctx); require.NoError(t, sdErr) }()
assert.NoError(t, err)
}
func TestConcurrentShutdown(t *testing.T) {
// Prepare
ctx := context.Background()
core, observedLogs := observer.New(zapcore.InfoLevel)
// Test
p, _, err := newConnectorImp(nil, explicitHistogramsConfig, disabledExemplarsConfig, disabledEventsConfig, cumulative, 0, []string{}, 1000)
require.NoError(t, err)
// Override the default no-op consumer and logger for testing.
p.metricsConsumer = new(consumertest.MetricsSink)
p.logger = zap.New(core)
err = p.Start(ctx, componenttest.NewNopHost())
require.NoError(t, err)
// Allow goroutines time to start.
time.Sleep(time.Millisecond)
// Simulate many goroutines trying to concurrently shutdown.
var wg sync.WaitGroup
const concurrency = 1000
wg.Add(concurrency)
for i := 0; i < concurrency; i++ {
go func() {
err := p.Shutdown(ctx)
require.NoError(t, err)
wg.Done()
}()
}
wg.Wait()
// Allow time for log observer to sync all logs emitted.
// Even though the WaitGroup has been given the "done" signal, there's still a potential race condition
// between the WaitGroup being unblocked and when the logs will be flushed.
var allLogs []observer.LoggedEntry
assert.Eventually(t, func() bool {
allLogs = observedLogs.All()
return len(allLogs) > 0
}, time.Second, time.Millisecond*10)
// Starting spanmetricsconnector...
// Shutting down spanmetricsconnector...
// Stopping ticker.
assert.Len(t, allLogs, 3)
}
func TestConnectorCapabilities(t *testing.T) {
// Prepare
factory := NewFactory()
cfg := factory.CreateDefaultConfig().(*Config)
// Test
c, err := newConnector(zaptest.NewLogger(t), cfg, nil)
// Override the default no-op consumer for testing.
c.metricsConsumer = new(consumertest.MetricsSink)
assert.NoError(t, err)
caps := c.Capabilities()
// Verify
assert.NotNil(t, c)
assert.Equal(t, false, caps.MutatesData)
}
type errConsumer struct {
wg *sync.WaitGroup
fakeErr error
}
func (e *errConsumer) Capabilities() consumer.Capabilities {
return consumer.Capabilities{MutatesData: false}
}
func (e *errConsumer) ConsumeMetrics(_ context.Context, _ pmetric.Metrics) error {
e.wg.Done()
return e.fakeErr
}
func TestConsumeMetricsErrors(t *testing.T) {
// Prepare
fakeErr := fmt.Errorf("consume metrics error")
core, observedLogs := observer.New(zapcore.ErrorLevel)
logger := zap.New(core)
var wg sync.WaitGroup
p, mockClock, err := newConnectorImp(nil, explicitHistogramsConfig, disabledExemplarsConfig, disabledEventsConfig, cumulative, 0, []string{}, 1000)
require.NoError(t, err)
// Override the default no-op consumer and logger for testing.
p.metricsConsumer = &errConsumer{
wg: &wg,
fakeErr: fakeErr,
}
p.logger = logger
ctx := metadata.NewIncomingContext(context.Background(), nil)
err = p.Start(ctx, componenttest.NewNopHost())
defer func() { sdErr := p.Shutdown(ctx); require.NoError(t, sdErr) }()
require.NoError(t, err)
traces := buildSampleTrace()
// Test
err = p.ConsumeTraces(ctx, traces)
require.NoError(t, err)
// Trigger flush.
wg.Add(1)
mockClock.Add(time.Nanosecond)
wg.Wait()
// Allow time for log observer to sync all logs emitted.
// Even though the WaitGroup has been given the "done" signal, there's still a potential race condition
// between the WaitGroup being unblocked and when the logs will be flushed.
var allLogs []observer.LoggedEntry
assert.Eventually(t, func() bool {
allLogs = observedLogs.All()
return len(allLogs) > 0
}, time.Second, time.Millisecond*10)
assert.Equal(t, "Failed ConsumeMetrics", allLogs[0].Message)
}
func TestConsumeTraces(t *testing.T) {
t.Parallel()
testcases := []struct {
name string
aggregationTemporality string
histogramConfig func() HistogramConfig
exemplarConfig func() ExemplarsConfig
verifier func(t testing.TB, input pmetric.Metrics) bool
traces []ptrace.Traces
}{
// disabling histogram
{
name: "Test histogram metrics are disabled",
aggregationTemporality: cumulative,
histogramConfig: disabledHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyDisabledHistogram,
traces: []ptrace.Traces{buildSampleTrace()},
},
// exponential buckets histogram
{
name: "Test single consumption, three spans (Cumulative), using exp. histogram",
aggregationTemporality: cumulative,
histogramConfig: exponentialHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputCumulative,
traces: []ptrace.Traces{buildSampleTrace()},
},
{
name: "Test single consumption, three spans (Delta), using exp. histogram",
aggregationTemporality: delta,
histogramConfig: exponentialHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputDelta,
traces: []ptrace.Traces{buildSampleTrace()},
},
{
// More consumptions, should accumulate additively.
name: "Test two consumptions (Cumulative), using exp. histogram",
aggregationTemporality: cumulative,
histogramConfig: exponentialHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyMultipleCumulativeConsumptions(),
traces: []ptrace.Traces{buildSampleTrace(), buildSampleTrace()},
},
{
// More consumptions, should not accumulate. Therefore, end state should be the same as single consumption case.
name: "Test two consumptions (Delta), using exp. histogram",
aggregationTemporality: delta,
histogramConfig: exponentialHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputDelta,
traces: []ptrace.Traces{buildSampleTrace(), buildSampleTrace()},
},
{
// Consumptions with improper timestamps
name: "Test bad consumptions (Delta), using exp. histogram",
aggregationTemporality: cumulative,
histogramConfig: exponentialHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyBadMetricsOkay,
traces: []ptrace.Traces{buildBadSampleTrace()},
},
// explicit buckets histogram
{
name: "Test single consumption, three spans (Cumulative).",
aggregationTemporality: cumulative,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputCumulative,
traces: []ptrace.Traces{buildSampleTrace()},
},
{
name: "Test single consumption, three spans (Delta).",
aggregationTemporality: delta,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputDelta,
traces: []ptrace.Traces{buildSampleTrace()},
},
{
// More consumptions, should accumulate additively.
name: "Test two consumptions (Cumulative).",
aggregationTemporality: cumulative,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyMultipleCumulativeConsumptions(),
traces: []ptrace.Traces{buildSampleTrace(), buildSampleTrace()},
},
{
// More consumptions, should not accumulate. Therefore, end state should be the same as single consumption case.
name: "Test two consumptions (Delta).",
aggregationTemporality: delta,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyConsumeMetricsInputDelta,
traces: []ptrace.Traces{buildSampleTrace(), buildSampleTrace()},
},
{
// Consumptions with improper timestamps
name: "Test bad consumptions (Delta).",
aggregationTemporality: cumulative,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: disabledExemplarsConfig,
verifier: verifyBadMetricsOkay,
traces: []ptrace.Traces{buildBadSampleTrace()},
},
// enabling exemplars
{
name: "Test Exemplars are enabled",
aggregationTemporality: cumulative,
histogramConfig: explicitHistogramsConfig,
exemplarConfig: enabledExemplarsConfig,
verifier: verifyExemplarsExist,
traces: []ptrace.Traces{buildSampleTrace()},
},
}
for _, tc := range testcases {
// Since parallelism is enabled in these tests, to avoid flaky behavior,
// instantiate a copy of the test case for t.Run's closure to use.
tc := tc
t.Run(tc.name, func(t *testing.T) {
// Prepare
mcon := &consumertest.MetricsSink{}
p, mockClock, err := newConnectorImp(stringp("defaultNullValue"), tc.histogramConfig, tc.exemplarConfig, disabledEventsConfig, tc.aggregationTemporality, 0, []string{}, 1000)
require.NoError(t, err)
// Override the default no-op consumer with metrics sink for testing.
p.metricsConsumer = mcon
ctx := metadata.NewIncomingContext(context.Background(), nil)
err = p.Start(ctx, componenttest.NewNopHost())
defer func() { sdErr := p.Shutdown(ctx); require.NoError(t, sdErr) }()
require.NoError(t, err)
for _, traces := range tc.traces {
// Test
err = p.ConsumeTraces(ctx, traces)
assert.NoError(t, err)
// Trigger flush.
mockClock.Add(time.Nanosecond)
require.Eventually(t, func() bool {
return len(mcon.AllMetrics()) > 0
}, 1*time.Second, 10*time.Millisecond)
tc.verifier(t, mcon.AllMetrics()[len(mcon.AllMetrics())-1])
}
})
}
}
func TestMetricKeyCache(t *testing.T) {
p, _, err := newConnectorImp(stringp("defaultNullValue"), explicitHistogramsConfig, disabledExemplarsConfig, disabledEventsConfig, cumulative, 0, []string{}, 1000)
require.NoError(t, err)
traces := buildSampleTrace()
// Test
ctx := metadata.NewIncomingContext(context.Background(), nil)
// 0 key was cached at beginning
assert.Zero(t, p.metricKeyToDimensions.Len())
err = p.ConsumeTraces(ctx, traces)
// Validate
require.NoError(t, err)
// 2 key was cached, 1 key was evicted and cleaned after the processing
assert.Eventually(t, func() bool {
return p.metricKeyToDimensions.Len() == dimensionsCacheSize
}, 10*time.Second, time.Millisecond*100)
// consume another batch of traces
err = p.ConsumeTraces(ctx, traces)
require.NoError(t, err)
// 2 key was cached, other keys were evicted and cleaned after the processing
assert.Eventually(t, func() bool {
return p.metricKeyToDimensions.Len() == dimensionsCacheSize
}, 10*time.Second, time.Millisecond*100)
}
func TestResourceMetricsCache(t *testing.T) {
p, _, err := newConnectorImp(stringp("defaultNullValue"), explicitHistogramsConfig, disabledExemplarsConfig, disabledEventsConfig, cumulative, 0, []string{}, 1000)
require.NoError(t, err)
// Test
ctx := metadata.NewIncomingContext(context.Background(), nil)
// 0 resources in the beginning
assert.Zero(t, p.resourceMetrics.Len())
err = p.ConsumeTraces(ctx, buildSampleTrace())
// Validate
require.NoError(t, err)
assert.Equal(t, 2, p.resourceMetrics.Len())
// consume another batch of traces for the same resources
err = p.ConsumeTraces(ctx, buildSampleTrace())
require.NoError(t, err)
assert.Equal(t, 2, p.resourceMetrics.Len())
// consume more batches for new resources. Max size is exceeded causing old resource entries to be discarded
for i := 0; i < resourceMetricsCacheSize; i++ {
traces := buildSampleTrace()
// add resource attributes to simulate additional resources providing data
for j := 0; j < traces.ResourceSpans().Len(); j++ {
traces.ResourceSpans().At(j).Resource().Attributes().PutStr("dummy", fmt.Sprintf("%d", i))
}
err = p.ConsumeTraces(ctx, traces)
require.NoError(t, err)
}
// validate that the cache doesn't grow past its limit
assert.Equal(t, resourceMetricsCacheSize, p.resourceMetrics.Len())
}
func TestResourceMetricsExpiration(t *testing.T) {
p, _, err := newConnectorImp(stringp("defaultNullValue"), explicitHistogramsConfig, disabledExemplarsConfig, disabledEventsConfig, cumulative, 1*time.Millisecond, []string{}, 1000)
require.NoError(t, err)
// Test
ctx := metadata.NewIncomingContext(context.Background(), nil)
// 0 resources in the beginning
assert.Zero(t, p.resourceMetrics.Len())
err = p.ConsumeTraces(ctx, buildSampleTrace())
// Validate
require.NoError(t, err)
assert.Equal(t, 2, p.resourceMetrics.Len())
// consume another batch of traces for the same resources
err = p.ConsumeTraces(ctx, buildSampleTrace())
require.NoError(t, err)
assert.Equal(t, 2, p.resourceMetrics.Len())
}
func TestResourceMetricsKeyAttributes(t *testing.T) {