/
contract_checker.go
280 lines (244 loc) · 10.7 KB
/
contract_checker.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package exportertest // import "go.opentelemetry.io/collector/exporter/exportertest"
import (
"context"
"fmt"
"strconv"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/component/componenttest"
"go.opentelemetry.io/collector/exporter"
"go.opentelemetry.io/collector/pdata/plog"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.opentelemetry.io/collector/pdata/ptrace"
"go.opentelemetry.io/collector/receiver"
"go.opentelemetry.io/collector/receiver/receivertest"
)
// uniqueIDAttrName is the attribute name that is used in log records/spans/datapoints as the unique identifier.
const uniqueIDAttrName = "test_id"
// uniqueIDAttrVal is the value type of the uniqueIDAttrName.
type uniqueIDAttrVal string
type CheckConsumeContractParams struct {
T *testing.T
NumberOfTestElements int
// DataType to test for.
DataType component.DataType
// ExporterFactory to create an exporter to be tested.
ExporterFactory exporter.Factory
ExporterConfig component.Config
// ReceiverFactory to create a mock receiver.
ReceiverFactory receiver.Factory
ReceiverConfig component.Config
}
func CheckConsumeContract(params CheckConsumeContractParams) {
// Different scenarios to test for.
// The decision function defines the testing scenario (i.e. to test for
// success case or for error case or a mix of both). See for example randomErrorsConsumeDecision.
scenarios := []struct {
name string
decisionFunc func() error
checkIfTestPassed func(*testing.T, int, requestCounter)
}{
{
name: "always_succeed",
// Always succeed. We expect all data to be delivered as is.
decisionFunc: func() error { return nil },
checkIfTestPassed: alwaysSucceedsPassed,
},
{
name: "random_non_permanent_error",
decisionFunc: randomNonPermanentErrorConsumeDecision,
checkIfTestPassed: randomNonPermanentErrorConsumeDecisionPassed,
},
{
name: "random_permanent_error",
decisionFunc: randomPermanentErrorConsumeDecision,
checkIfTestPassed: randomPermanentErrorConsumeDecisionPassed,
},
{
name: "random_error",
decisionFunc: randomErrorsConsumeDecision,
checkIfTestPassed: randomErrorConsumeDecisionPassed,
},
}
for _, scenario := range scenarios {
params.T.Run(
scenario.name, func(t *testing.T) {
checkConsumeContractScenario(t, params, scenario.decisionFunc, scenario.checkIfTestPassed)
},
)
}
}
func checkConsumeContractScenario(t *testing.T, params CheckConsumeContractParams, decisionFunc func() error, checkIfTestPassed func(*testing.T, int, requestCounter)) {
mockConsumerInstance := newMockConsumer(decisionFunc)
switch params.DataType {
case component.DataTypeLogs:
r, err := params.ReceiverFactory.CreateLogsReceiver(context.Background(), receivertest.NewNopCreateSettings(), params.ReceiverConfig, &mockConsumerInstance)
require.NoError(t, err)
require.NoError(t, r.Start(context.Background(), componenttest.NewNopHost()))
checkLogs(t, params, r, &mockConsumerInstance, checkIfTestPassed)
case component.DataTypeTraces:
r, err := params.ReceiverFactory.CreateTracesReceiver(context.Background(), receivertest.NewNopCreateSettings(), params.ReceiverConfig, &mockConsumerInstance)
require.NoError(t, err)
require.NoError(t, r.Start(context.Background(), componenttest.NewNopHost()))
checkTraces(t, params, r, &mockConsumerInstance, checkIfTestPassed)
case component.DataTypeMetrics:
r, err := params.ReceiverFactory.CreateMetricsReceiver(context.Background(), receivertest.NewNopCreateSettings(), params.ReceiverConfig, &mockConsumerInstance)
require.NoError(t, err)
require.NoError(t, r.Start(context.Background(), componenttest.NewNopHost()))
checkMetrics(t, params, r, &mockConsumerInstance, checkIfTestPassed)
default:
require.FailNow(t, "must specify a valid DataType to test for")
}
}
func checkMetrics(t *testing.T, params CheckConsumeContractParams, mockReceiver component.Component,
mockConsumer *mockConsumer, checkIfTestPassed func(*testing.T, int, requestCounter)) {
ctx := context.Background()
var exp exporter.Metrics
var err error
exp, err = params.ExporterFactory.CreateMetricsExporter(ctx, NewNopCreateSettings(), params.ExporterConfig)
require.NoError(t, err)
require.NotNil(t, exp)
err = exp.Start(ctx, componenttest.NewNopHost())
require.NoError(t, err)
defer func(exp exporter.Metrics, ctx context.Context) {
err = exp.Shutdown(ctx)
require.NoError(t, err)
err = mockReceiver.Shutdown(ctx)
require.NoError(t, err)
mockConsumer.clear()
}(exp, ctx)
for i := 0; i < params.NumberOfTestElements; i++ {
id := uniqueIDAttrVal(strconv.Itoa(i))
data := createOneMetricWithID(id)
err = exp.ConsumeMetrics(ctx, data)
}
reqCounter := mockConsumer.getRequestCounter()
// The overall number of requests sent by exporter
fmt.Printf("Number of export tries: %d\n", reqCounter.total)
// Successfully delivered items
fmt.Printf("Total items received successfully: %d\n", reqCounter.success)
// Number of errors that happened
fmt.Printf("Number of permanent errors: %d\n", reqCounter.error.permanent)
fmt.Printf("Number of non-permanent errors: %d\n", reqCounter.error.nonpermanent)
assert.EventuallyWithT(t, func(*assert.CollectT) {
checkIfTestPassed(t, params.NumberOfTestElements, *reqCounter)
}, 2*time.Second, 100*time.Millisecond)
}
func checkTraces(t *testing.T, params CheckConsumeContractParams, mockReceiver component.Component, mockConsumer *mockConsumer, checkIfTestPassed func(*testing.T, int, requestCounter)) {
ctx := context.Background()
var exp exporter.Traces
var err error
exp, err = params.ExporterFactory.CreateTracesExporter(ctx, NewNopCreateSettings(), params.ExporterConfig)
require.NoError(t, err)
require.NotNil(t, exp)
err = exp.Start(ctx, componenttest.NewNopHost())
require.NoError(t, err)
defer func(exp exporter.Traces, ctx context.Context) {
err = exp.Shutdown(ctx)
require.NoError(t, err)
err = mockReceiver.Shutdown(ctx)
require.NoError(t, err)
mockConsumer.clear()
}(exp, ctx)
for i := 0; i < params.NumberOfTestElements; i++ {
id := uniqueIDAttrVal(strconv.Itoa(i))
data := createOneTraceWithID(id)
err = exp.ConsumeTraces(ctx, data)
}
reqCounter := mockConsumer.getRequestCounter()
// The overall number of requests sent by exporter
fmt.Printf("Number of export tries: %d\n", reqCounter.total)
// Successfully delivered items
fmt.Printf("Total items received successfully: %d\n", reqCounter.success)
// Number of errors that happened
fmt.Printf("Number of permanent errors: %d\n", reqCounter.error.permanent)
fmt.Printf("Number of non-permanent errors: %d\n", reqCounter.error.nonpermanent)
assert.EventuallyWithT(t, func(*assert.CollectT) {
checkIfTestPassed(t, params.NumberOfTestElements, *reqCounter)
}, 2*time.Second, 100*time.Millisecond)
}
func checkLogs(t *testing.T, params CheckConsumeContractParams, mockReceiver component.Component, mockConsumer *mockConsumer, checkIfTestPassed func(*testing.T, int, requestCounter)) {
ctx := context.Background()
var exp exporter.Logs
var err error
exp, err = params.ExporterFactory.CreateLogsExporter(ctx, NewNopCreateSettings(), params.ExporterConfig)
require.NoError(t, err)
require.NotNil(t, exp)
err = exp.Start(ctx, componenttest.NewNopHost())
require.NoError(t, err)
defer func(exp exporter.Logs, ctx context.Context) {
err = exp.Shutdown(ctx)
require.NoError(t, err)
err = mockReceiver.Shutdown(ctx)
require.NoError(t, err)
mockConsumer.clear()
}(exp, ctx)
for i := 0; i < params.NumberOfTestElements; i++ {
id := uniqueIDAttrVal(strconv.Itoa(i))
data := createOneLogWithID(id)
err = exp.ConsumeLogs(ctx, data)
}
reqCounter := mockConsumer.getRequestCounter()
// The overall number of requests sent by exporter
fmt.Printf("Number of export tries: %d\n", reqCounter.total)
// Successfully delivered items
fmt.Printf("Total items received successfully: %d\n", reqCounter.success)
// Number of errors that happened
fmt.Printf("Number of permanent errors: %d\n", reqCounter.error.permanent)
fmt.Printf("Number of non-permanent errors: %d\n", reqCounter.error.nonpermanent)
assert.EventuallyWithT(t, func(*assert.CollectT) {
checkIfTestPassed(t, params.NumberOfTestElements, *reqCounter)
}, 2*time.Second, 100*time.Millisecond)
}
// Test is successful if all the elements were received successfully and no error was returned
func alwaysSucceedsPassed(t *testing.T, allRecordsNumber int, reqCounter requestCounter) {
require.Equal(t, allRecordsNumber, reqCounter.success)
require.Equal(t, reqCounter.total, allRecordsNumber)
require.Equal(t, reqCounter.error.nonpermanent, 0)
require.Equal(t, reqCounter.error.permanent, 0)
}
// Test is successful if all the elements were retried on non-permanent errors
func randomNonPermanentErrorConsumeDecisionPassed(t *testing.T, allRecordsNumber int, reqCounter requestCounter) {
// more or equal tries than successes
require.GreaterOrEqual(t, reqCounter.total, reqCounter.success)
// it is retried on every error
require.Equal(t, reqCounter.total-reqCounter.error.nonpermanent, reqCounter.success)
require.Equal(t, allRecordsNumber+reqCounter.error.nonpermanent, reqCounter.total)
}
// Test is successful if the calls are not retried on permanent errors
func randomPermanentErrorConsumeDecisionPassed(t *testing.T, allRecordsNumber int, reqCounter requestCounter) {
require.Equal(t, allRecordsNumber-reqCounter.error.permanent, reqCounter.success)
require.Equal(t, reqCounter.total, allRecordsNumber)
}
// Test is successful if the calls are not retried on permanent errors
func randomErrorConsumeDecisionPassed(t *testing.T, allRecordsNumber int, reqCounter requestCounter) {
require.Equal(t, allRecordsNumber-reqCounter.error.permanent, reqCounter.success)
require.Equal(t, reqCounter.total, allRecordsNumber+reqCounter.error.nonpermanent)
}
func createOneLogWithID(id uniqueIDAttrVal) plog.Logs {
data := plog.NewLogs()
data.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords().AppendEmpty().Attributes().PutStr(
uniqueIDAttrName,
string(id),
)
return data
}
func createOneTraceWithID(id uniqueIDAttrVal) ptrace.Traces {
data := ptrace.NewTraces()
data.ResourceSpans().AppendEmpty().ScopeSpans().AppendEmpty().Spans().AppendEmpty().Attributes().PutStr(
uniqueIDAttrName,
string(id),
)
return data
}
func createOneMetricWithID(id uniqueIDAttrVal) pmetric.Metrics {
data := pmetric.NewMetrics()
data.ResourceMetrics().AppendEmpty().ScopeMetrics().AppendEmpty().Metrics().AppendEmpty().SetEmptyHistogram().
DataPoints().AppendEmpty().Attributes().PutStr(uniqueIDAttrName, string(id))
return data
}