forked from open-telemetry/opentelemetry-collector-contrib
/
exporter_metrics_test.go
507 lines (476 loc) · 19.6 KB
/
exporter_metrics_test.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package clickhouseexporter
import (
"context"
"database/sql/driver"
"fmt"
"strings"
"sync/atomic"
"testing"
"time"
"github.com/ClickHouse/clickhouse-go/v2"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.uber.org/zap/zaptest"
)
func TestMetricsClusterConfig(t *testing.T) {
testClusterConfig(t, func(t *testing.T, dsn string, clusterTest clusterTestConfig, fns ...func(*Config)) {
exporter := newTestMetricsExporter(t, dsn, fns...)
clusterTest.verifyConfig(t, exporter.cfg)
})
}
func TestMetricsTableEngineConfig(t *testing.T) {
testTableEngineConfig(t, func(t *testing.T, dsn string, engineTest tableEngineTestConfig, fns ...func(*Config)) {
exporter := newTestMetricsExporter(t, dsn, fns...)
engineTest.verifyConfig(t, exporter.cfg.TableEngine)
})
}
func TestExporter_pushMetricsData(t *testing.T) {
t.Parallel()
t.Run("push success", func(t *testing.T) {
items := &atomic.Int32{}
initClickhouseTestServer(t, func(query string, _ []driver.Value) error {
if strings.HasPrefix(query, "INSERT") {
items.Add(1)
}
return nil
})
exporter := newTestMetricsExporter(t, defaultEndpoint)
mustPushMetricsData(t, exporter, simpleMetrics(1))
require.Equal(t, int32(15), items.Load())
})
t.Run("push failure", func(t *testing.T) {
initClickhouseTestServer(t, func(query string, _ []driver.Value) error {
if strings.HasPrefix(query, "INSERT") {
return fmt.Errorf("mock insert error")
}
return nil
})
exporter := newTestMetricsExporter(t, defaultEndpoint)
err := exporter.pushMetricsData(context.TODO(), simpleMetrics(2))
require.Error(t, err)
})
t.Run("check Resource metadata and scope metadata (2nd resource contain 2 different scope metrics)", func(t *testing.T) {
items := &atomic.Int32{}
resourceSchemaIdx := []int{1, 2, 2}
scopeNameIdx := []int{1, 2, 3}
itemIdxs := map[string]*atomic.Uint32{
"otel_metrics_exponential_histogram": {},
"otel_metrics_gauge": {},
"otel_metrics_histogram": {},
"otel_metrics_sum": {},
"otel_metrics_summary": {},
}
initClickhouseTestServer(t, func(query string, values []driver.Value) error {
if strings.HasPrefix(query, "INSERT") {
items.Add(1)
if strings.HasPrefix(query, "INSERT INTO otel_metrics_exponential_histogram") {
idx := itemIdxs["otel_metrics_exponential_histogram"]
require.Equal(t, fmt.Sprintf("Resource SchemaUrl %d", resourceSchemaIdx[idx.Load()]), values[1])
require.Equal(t, fmt.Sprintf("Scope name %d", scopeNameIdx[idx.Load()]), values[2])
idx.Add(1)
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_gauge") {
idx := itemIdxs["otel_metrics_gauge"]
require.Equal(t, fmt.Sprintf("Resource SchemaUrl %d", resourceSchemaIdx[idx.Load()]), values[1])
require.Equal(t, fmt.Sprintf("Scope name %d", scopeNameIdx[idx.Load()]), values[2])
idx.Add(1)
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_histogram") {
idx := itemIdxs["otel_metrics_histogram"]
require.Equal(t, fmt.Sprintf("Resource SchemaUrl %d", resourceSchemaIdx[idx.Load()]), values[1])
require.Equal(t, fmt.Sprintf("Scope name %d", scopeNameIdx[idx.Load()]), values[2])
idx.Add(1)
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_sum (") {
idx := itemIdxs["otel_metrics_sum"]
require.Equal(t, fmt.Sprintf("Resource SchemaUrl %d", resourceSchemaIdx[idx.Load()]), values[1])
require.Equal(t, fmt.Sprintf("Scope name %d", scopeNameIdx[idx.Load()]), values[2])
idx.Add(1)
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_summary") {
idx := itemIdxs["otel_metrics_summary"]
require.Equal(t, fmt.Sprintf("Resource SchemaUrl %d", resourceSchemaIdx[idx.Load()]), values[1])
require.Equal(t, fmt.Sprintf("Scope name %d", scopeNameIdx[idx.Load()]), values[2])
idx.Add(1)
}
}
return nil
})
exporter := newTestMetricsExporter(t, defaultEndpoint)
mustPushMetricsData(t, exporter, simpleMetrics(1))
require.Equal(t, int32(15), items.Load())
})
t.Run("check traceID and spanID", func(t *testing.T) {
initClickhouseTestServer(t, func(query string, values []driver.Value) error {
if strings.HasPrefix(query, "INSERT INTO otel_metrics_gauge") {
require.Equal(t, clickhouse.ArraySet{"0102030000000000"}, values[18])
require.Equal(t, clickhouse.ArraySet{"01020300000000000000000000000000"}, values[19])
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_histogram") {
require.Equal(t, clickhouse.ArraySet{"0102030000000000"}, values[20])
require.Equal(t, clickhouse.ArraySet{"01020300000000000000000000000000"}, values[21])
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_sum ") {
require.Equal(t, clickhouse.ArraySet{"0102030000000000"}, values[18])
require.Equal(t, clickhouse.ArraySet{"01020300000000000000000000000000"}, values[19])
}
if strings.HasPrefix(query, "INSERT INTO otel_metrics_exponential_histogram") {
require.Equal(t, clickhouse.ArraySet{"0102030000000000"}, values[24])
require.Equal(t, clickhouse.ArraySet{"01020300000000000000000000000000"}, values[25])
}
return nil
})
exporter := newTestMetricsExporter(t, defaultEndpoint)
mustPushMetricsData(t, exporter, simpleMetrics(1))
})
}
func Benchmark_pushMetricsData(b *testing.B) {
pm := simpleMetrics(1)
exporter := newTestMetricsExporter(&testing.T{}, defaultEndpoint)
b.ReportAllocs()
b.ResetTimer()
for n := 0; n < b.N; n++ {
err := exporter.pushMetricsData(context.TODO(), pm)
require.NoError(b, err)
}
}
// simpleMetrics there will be added two ResourceMetrics and each of them have count data point
func simpleMetrics(count int) pmetric.Metrics {
metrics := pmetric.NewMetrics()
rm := metrics.ResourceMetrics().AppendEmpty()
rm.Resource().Attributes().PutStr("service.name", "demo 1")
rm.Resource().Attributes().PutStr("Resource Attributes 1", "value1")
rm.Resource().SetDroppedAttributesCount(10)
rm.SetSchemaUrl("Resource SchemaUrl 1")
sm := rm.ScopeMetrics().AppendEmpty()
sm.SetSchemaUrl("Scope SchemaUrl 1")
sm.Scope().Attributes().PutStr("Scope Attributes 1", "value1")
sm.Scope().SetDroppedAttributesCount(10)
sm.Scope().SetName("Scope name 1")
sm.Scope().SetVersion("Scope version 1")
timestamp := time.Unix(1703498029, 0)
for i := 0; i < count; i++ {
// gauge
m := sm.Metrics().AppendEmpty()
m.SetName("gauge metrics")
m.SetUnit("count")
m.SetDescription("This is a gauge metrics")
dp := m.SetEmptyGauge().DataPoints().AppendEmpty()
dp.SetIntValue(int64(i))
dp.SetFlags(pmetric.DefaultDataPointFlags)
dp.Attributes().PutStr("gauge_label_1", "1")
dp.SetStartTimestamp(pcommon.NewTimestampFromTime(timestamp))
dp.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars := dp.Exemplars().AppendEmpty()
exemplars.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// sum
m = sm.Metrics().AppendEmpty()
m.SetName("sum metrics")
m.SetUnit("count")
m.SetDescription("This is a sum metrics")
dp = m.SetEmptySum().DataPoints().AppendEmpty()
dp.SetDoubleValue(11.234)
dp.SetFlags(pmetric.DefaultDataPointFlags)
dp.Attributes().PutStr("sum_label_1", "1")
dp.SetStartTimestamp(pcommon.NewTimestampFromTime(timestamp))
dp.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars = dp.Exemplars().AppendEmpty()
exemplars.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// histogram
m = sm.Metrics().AppendEmpty()
m.SetName("histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a histogram metrics")
dpHisto := m.SetEmptyHistogram().DataPoints().AppendEmpty()
dpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(timestamp))
dpHisto.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
dpHisto.SetCount(1)
dpHisto.SetSum(1)
dpHisto.Attributes().PutStr("key", "value")
dpHisto.Attributes().PutStr("key2", "value")
dpHisto.ExplicitBounds().FromRaw([]float64{0, 0, 0, 0, 0})
dpHisto.BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpHisto.SetMin(0)
dpHisto.SetMax(1)
exemplars = dpHisto.Exemplars().AppendEmpty()
exemplars.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars.SetDoubleValue(55.22)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// exp histogram
m = sm.Metrics().AppendEmpty()
m.SetName("exp histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a exp histogram metrics")
dpExpHisto := m.SetEmptyExponentialHistogram().DataPoints().AppendEmpty()
dpExpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(timestamp))
dpExpHisto.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
dpExpHisto.SetSum(1)
dpExpHisto.SetMin(0)
dpExpHisto.SetMax(1)
dpExpHisto.SetZeroCount(0)
dpExpHisto.SetCount(1)
dpExpHisto.Attributes().PutStr("key", "value")
dpExpHisto.Attributes().PutStr("key2", "value")
dpExpHisto.Negative().SetOffset(1)
dpExpHisto.Negative().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpExpHisto.Positive().SetOffset(1)
dpExpHisto.Positive().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
exemplars = dpExpHisto.Exemplars().AppendEmpty()
exemplars.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// summary
m = sm.Metrics().AppendEmpty()
m.SetName("summary metrics")
m.SetUnit("ms")
m.SetDescription("This is a summary metrics")
summary := m.SetEmptySummary().DataPoints().AppendEmpty()
summary.SetStartTimestamp(pcommon.NewTimestampFromTime(timestamp))
summary.SetTimestamp(pcommon.NewTimestampFromTime(timestamp))
summary.Attributes().PutStr("key", "value")
summary.Attributes().PutStr("key2", "value")
summary.SetCount(1)
summary.SetSum(1)
quantileValues := summary.QuantileValues().AppendEmpty()
quantileValues.SetValue(1)
quantileValues.SetQuantile(1)
}
rm = metrics.ResourceMetrics().AppendEmpty()
rm.Resource().Attributes().PutStr("service.name", "demo 2")
rm.Resource().Attributes().PutStr("Resource Attributes 2", "value2")
rm.Resource().SetDroppedAttributesCount(20)
rm.SetSchemaUrl("Resource SchemaUrl 2")
sm = rm.ScopeMetrics().AppendEmpty()
sm.SetSchemaUrl("Scope SchemaUrl 2")
sm.Scope().Attributes().PutStr("Scope Attributes 2", "value2")
sm.Scope().SetDroppedAttributesCount(20)
sm.Scope().SetName("Scope name 2")
sm.Scope().SetVersion("Scope version 2")
for i := 0; i < count; i++ {
// gauge
m := sm.Metrics().AppendEmpty()
m.SetName("gauge metrics")
m.SetUnit("count")
m.SetDescription("This is a gauge metrics")
dp := m.SetEmptyGauge().DataPoints().AppendEmpty()
dp.SetIntValue(int64(i))
dp.Attributes().PutStr("gauge_label_2", "2")
dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
exemplars := dp.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// sum
m = sm.Metrics().AppendEmpty()
m.SetName("sum metrics")
m.SetUnit("count")
m.SetDescription("This is a sum metrics")
dp = m.SetEmptySum().DataPoints().AppendEmpty()
dp.SetIntValue(int64(i))
dp.Attributes().PutStr("sum_label_2", "2")
dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
exemplars = dp.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// histogram
m = sm.Metrics().AppendEmpty()
m.SetName("histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a histogram metrics")
dpHisto := m.SetEmptyHistogram().DataPoints().AppendEmpty()
dpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpHisto.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpHisto.SetCount(1)
dpHisto.SetSum(1)
dpHisto.Attributes().PutStr("key", "value")
dpHisto.Attributes().PutStr("key", "value")
dpHisto.ExplicitBounds().FromRaw([]float64{0, 0, 0, 0, 0})
dpHisto.BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpHisto.SetMin(0)
dpHisto.SetMax(1)
exemplars = dpHisto.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// exp histogram
m = sm.Metrics().AppendEmpty()
m.SetName("exp histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a exp histogram metrics")
dpExpHisto := m.SetEmptyExponentialHistogram().DataPoints().AppendEmpty()
dpExpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpExpHisto.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpExpHisto.SetSum(1)
dpExpHisto.SetMin(0)
dpExpHisto.SetMax(1)
dpExpHisto.SetZeroCount(0)
dpExpHisto.SetCount(1)
dpExpHisto.Attributes().PutStr("key", "value")
dpExpHisto.Attributes().PutStr("key", "value")
dpExpHisto.Negative().SetOffset(1)
dpExpHisto.Negative().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpExpHisto.Positive().SetOffset(1)
dpExpHisto.Positive().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
exemplars = dpExpHisto.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// summary
m = sm.Metrics().AppendEmpty()
m.SetName("summary histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a summary metrics")
summary := m.SetEmptySummary().DataPoints().AppendEmpty()
summary.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
summary.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
summary.Attributes().PutStr("key", "value")
summary.Attributes().PutStr("key2", "value2")
summary.SetCount(1)
summary.SetSum(1)
quantileValues := summary.QuantileValues().AppendEmpty()
quantileValues.SetValue(1)
quantileValues.SetQuantile(1)
}
// add a different scope metrics
sm = rm.ScopeMetrics().AppendEmpty()
sm.SetSchemaUrl("Scope SchemaUrl 3")
sm.Scope().Attributes().PutStr("Scope Attributes 3", "value3")
sm.Scope().SetDroppedAttributesCount(20)
sm.Scope().SetName("Scope name 3")
sm.Scope().SetVersion("Scope version 3")
for i := 0; i < count; i++ {
// gauge
m := sm.Metrics().AppendEmpty()
m.SetName("gauge metrics")
m.SetUnit("count")
m.SetDescription("This is a gauge metrics")
dp := m.SetEmptyGauge().DataPoints().AppendEmpty()
dp.SetIntValue(int64(i))
dp.Attributes().PutStr("gauge_label_3", "3")
dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
exemplars := dp.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// sum
m = sm.Metrics().AppendEmpty()
m.SetName("sum metrics")
m.SetUnit("count")
m.SetDescription("This is a sum metrics")
dp = m.SetEmptySum().DataPoints().AppendEmpty()
dp.SetIntValue(int64(i))
dp.Attributes().PutStr("sum_label_2", "2")
dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
exemplars = dp.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// histogram
m = sm.Metrics().AppendEmpty()
m.SetName("histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a histogram metrics")
dpHisto := m.SetEmptyHistogram().DataPoints().AppendEmpty()
dpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpHisto.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpHisto.SetCount(1)
dpHisto.SetSum(1)
dpHisto.Attributes().PutStr("key", "value")
dpHisto.Attributes().PutStr("key", "value")
dpHisto.ExplicitBounds().FromRaw([]float64{0, 0, 0, 0, 0})
dpHisto.BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpHisto.SetMin(0)
dpHisto.SetMax(1)
exemplars = dpHisto.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// exp histogram
m = sm.Metrics().AppendEmpty()
m.SetName("exp histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a exp histogram metrics")
dpExpHisto := m.SetEmptyExponentialHistogram().DataPoints().AppendEmpty()
dpExpHisto.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpExpHisto.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
dpExpHisto.SetSum(1)
dpExpHisto.SetMin(0)
dpExpHisto.SetMax(1)
dpExpHisto.SetZeroCount(0)
dpExpHisto.SetCount(1)
dpExpHisto.Attributes().PutStr("key", "value")
dpExpHisto.Attributes().PutStr("key", "value")
dpExpHisto.Negative().SetOffset(1)
dpExpHisto.Negative().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
dpExpHisto.Positive().SetOffset(1)
dpExpHisto.Positive().BucketCounts().FromRaw([]uint64{0, 0, 0, 1, 0})
exemplars = dpExpHisto.Exemplars().AppendEmpty()
exemplars.SetIntValue(54)
exemplars.FilteredAttributes().PutStr("key", "value")
exemplars.FilteredAttributes().PutStr("key2", "value2")
exemplars.SetSpanID([8]byte{1, 2, 3, byte(i)})
exemplars.SetTraceID([16]byte{1, 2, 3, byte(i)})
// summary
m = sm.Metrics().AppendEmpty()
m.SetName("summary histogram metrics")
m.SetUnit("ms")
m.SetDescription("This is a summary metrics")
summary := m.SetEmptySummary().DataPoints().AppendEmpty()
summary.SetStartTimestamp(pcommon.NewTimestampFromTime(time.Now()))
summary.SetTimestamp(pcommon.NewTimestampFromTime(time.Now()))
summary.Attributes().PutStr("key", "value")
summary.Attributes().PutStr("key2", "value2")
summary.SetCount(1)
summary.SetSum(1)
quantileValues := summary.QuantileValues().AppendEmpty()
quantileValues.SetValue(1)
quantileValues.SetQuantile(1)
}
return metrics
}
func mustPushMetricsData(t *testing.T, exporter *metricsExporter, md pmetric.Metrics) {
err := exporter.pushMetricsData(context.TODO(), md)
require.NoError(t, err)
}
// nolint:unparam // not need to check this func
func newTestMetricsExporter(t *testing.T, dsn string, fns ...func(*Config)) *metricsExporter {
exporter, err := newMetricsExporter(zaptest.NewLogger(t), withTestExporterConfig(fns...)(dsn))
require.NoError(t, err)
require.NoError(t, exporter.start(context.TODO(), nil))
t.Cleanup(func() { _ = exporter.shutdown(context.TODO()) })
return exporter
}