Multi Receiver Testbed Support (#5962)

* [processor/resourcedetection] Fix system detector not setting attributes (open-telemetry#24670) (open-telemetry#24684)

Cherry-pick the commit from the patch release v0.82.1

Co-authored-by: Dmitrii Anoshin <anoshindx@gmail.com>

* feat: working

* .

* .

* .

* .

* .

---------

Co-authored-by: Juraci Paixão Kröhling <juraci@kroehling.de>
Co-authored-by: Dmitrii Anoshin <anoshindx@gmail.com>

testbed/testbed/multi_receiver_test_case.go

@@ -0,0 +1,325 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package testbed // import "github.com/open-telemetry/opentelemetry-collector-contrib/testbed/testbed"
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+	"path"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+// MultiReceiverTestCase defines a running test case.
+type MultiReceiverTestCase struct {
+	T *testing.T
+
+	// Directory where test case results and logs will be written.
+	resultDir string
+
+	// Resource spec for agent.
+	resourceSpec ResourceSpec
+
+	// Agent process.
+	agentProc OtelcolRunner
+
+	Sender    DataSender
+	Receivers []DataReceiver
+
+	LoadGenerator *LoadGenerator
+	MockBackends  map[DataReceiver]*MockBackend
+	validator     *MultiReceiverTestCaseValidator
+
+	startTime time.Time
+
+	// errorSignal indicates an error in the test case execution, e.g. process execution
+	// failure or exceeding resource consumption, etc. The actual error message is already
+	// logged, this is only an indicator on which you can wait to be informed.
+	errorSignal chan struct{}
+	// Duration is the requested duration of the tests. Configured via TESTBED_DURATION
+	// env variable and defaults to 15 seconds if env variable is unspecified.
+	Duration       time.Duration
+	doneSignal     chan struct{}
+	errorCause     string
+	ResultsSummary TestResultsSummary
+}
+
+// NewMultiReceiverTestCase creates a new MultiReceiverTestCase. It expects agent-config.yaml in the specified directory.
+func NewMultiReceiverTestCase(
+	t *testing.T,
+	dataProvider DataProvider,
+	sender DataSender,
+	receivers []DataReceiver,
+	agentProc OtelcolRunner,
+	validator *MultiReceiverTestCaseValidator,
+	resultsSummary TestResultsSummary,
+	opts ...MultiReceiverTestCaseOption,
+) *MultiReceiverTestCase {
+	tc := MultiReceiverTestCase{
+		T:              t,
+		errorSignal:    make(chan struct{}),
+		doneSignal:     make(chan struct{}),
+		startTime:      time.Now(),
+		Sender:         sender,
+		Receivers:      receivers,
+		agentProc:      agentProc,
+		validator:      validator,
+		ResultsSummary: resultsSummary,
+		MockBackends:   make(map[DataReceiver]*MockBackend),
+	}
+
+	// Get requested test case duration from env variable.
+	duration := os.Getenv(testcaseDurationVar)
+	if duration == "" {
+		duration = "15s"
+	}
+	var err error
+	tc.Duration, err = time.ParseDuration(duration)
+	if err != nil {
+		log.Fatalf("Invalid "+testcaseDurationVar+": %v. Expecting a valid duration string.", duration)
+	}
+
+	// Apply all provided options.
+	for _, opt := range opts {
+		opt(&tc)
+	}
+
+	// Prepare directory for results.
+	tc.resultDir, err = filepath.Abs(path.Join("results", t.Name()))
+	require.NoErrorf(t, err, "Cannot resolve %s", t.Name())
+	require.NoErrorf(t, os.MkdirAll(tc.resultDir, os.ModePerm), "Cannot create directory %s", tc.resultDir)
+
+	// Set default resource check period.
+	tc.resourceSpec.ResourceCheckPeriod = 3 * time.Second
+	if tc.Duration < tc.resourceSpec.ResourceCheckPeriod {
+		// Resource check period should not be longer than entire test duration.
+		tc.resourceSpec.ResourceCheckPeriod = tc.Duration
+	}
+
+	tc.LoadGenerator, err = NewLoadGenerator(dataProvider, sender)
+	require.NoError(t, err, "Cannot create generator")
+
+	for _, receiver := range receivers {
+		tc.MockBackends[receiver] = NewMockBackend(tc.composeTestResultFileName("backend.log"), receiver)
+	}
+
+	go tc.logStats()
+
+	return &tc
+}
+
+func (tc *MultiReceiverTestCase) composeTestResultFileName(fileName string) string {
+	fileName, err := filepath.Abs(path.Join(tc.resultDir, fileName))
+	require.NoError(tc.T, err, "Cannot resolve %s", fileName)
+	return fileName
+}
+
+// StartAgent starts the agent and redirects its standard output and standard error
+// to "agent.log" file located in the test directory.
+func (tc *MultiReceiverTestCase) StartAgent(args ...string) {
+	logFileName := tc.composeTestResultFileName("agent.log")
+
+	startParams := StartParams{
+		Name:         "Agent",
+		LogFilePath:  logFileName,
+		CmdArgs:      args,
+		resourceSpec: &tc.resourceSpec,
+	}
+	if err := tc.agentProc.Start(startParams); err != nil {
+		tc.indicateError(err)
+		return
+	}
+
+	// Start watching resource consumption.
+	go func() {
+		if err := tc.agentProc.WatchResourceConsumption(); err != nil {
+			tc.indicateError(err)
+		}
+	}()
+
+	endpoint := tc.LoadGenerator.sender.GetEndpoint()
+	if endpoint != nil {
+		// Wait for agent to start. We consider the agent started when we can
+		// connect to the port to which we intend to send load. We only do this
+		// if the endpoint is not-empty, i.e. the sender does use network (some senders
+		// like text log writers don't).
+		tc.WaitFor(func() bool {
+			conn, err := net.Dial(tc.LoadGenerator.sender.GetEndpoint().Network(), tc.LoadGenerator.sender.GetEndpoint().String())
+			if err == nil && conn != nil {
+				conn.Close()
+				return true
+			}
+			return false
+		}, fmt.Sprintf("connection to %s:%s", tc.LoadGenerator.sender.GetEndpoint().Network(), tc.LoadGenerator.sender.GetEndpoint().String()))
+	}
+}
+
+// StopAgent stops agent process.
+func (tc *MultiReceiverTestCase) StopAgent() {
+	if _, err := tc.agentProc.Stop(); err != nil {
+		tc.indicateError(err)
+	}
+}
+
+// StartLoad starts the load generator and redirects its standard output and standard error
+// to "load-generator.log" file located in the test directory.
+func (tc *MultiReceiverTestCase) StartLoad(options LoadOptions) {
+	tc.LoadGenerator.Start(options)
+}
+
+// StopLoad stops load generator.
+func (tc *MultiReceiverTestCase) StopLoad() {
+	tc.LoadGenerator.Stop()
+}
+
+// StartBackend starts the specified backend type.
+func (tc *MultiReceiverTestCase) StartBackends() {
+
+	for _, backend := range tc.MockBackends {
+		require.NoError(tc.T, backend.Start(), "Cannot start backend for: "+backend.receiver.ProtocolName())
+	}
+}
+
+// StopBackend stops the backend.
+func (tc *MultiReceiverTestCase) StopBackend() {
+	for _, backend := range tc.MockBackends {
+		backend.Stop()
+	}
+}
+
+// EnableRecording enables recording of all data received by MockBackend.
+func (tc *MultiReceiverTestCase) EnableRecording() {
+	for _, backend := range tc.MockBackends {
+		backend.EnableRecording()
+	}
+}
+
+// AgentMemoryInfo returns raw memory info struct about the agent
+// as returned by github.com/shirou/gopsutil/process
+func (tc *MultiReceiverTestCase) AgentMemoryInfo() (uint32, uint32, error) {
+	stat, err := tc.agentProc.GetProcessMon().MemoryInfo()
+	if err != nil {
+		return 0, 0, err
+	}
+	return uint32(stat.RSS / mibibyte), uint32(stat.VMS / mibibyte), nil
+}
+
+// Stop stops the load generator, the agent and the backend.
+func (tc *MultiReceiverTestCase) Stop() {
+	// Stop monitoring the agent
+	close(tc.doneSignal)
+
+	// Stop all components
+	tc.StopLoad()
+	tc.StopAgent()
+	tc.StopBackend()
+
+	// Report test results
+	tc.validator.RecordResults(tc)
+}
+
+// ValidateData validates data received by mock backend against what was generated and sent to the collector
+// instance(s) under test by the LoadGenerator.
+func (tc *MultiReceiverTestCase) ValidateData() {
+	select {
+	case <-tc.errorSignal:
+		// Error is already signaled and recorded. Validating data is pointless.
+		return
+	default:
+	}
+
+	tc.validator.Validate(tc)
+}
+
+// Sleep for specified duration or until error is signaled.
+func (tc *MultiReceiverTestCase) Sleep(d time.Duration) {
+	select {
+	case <-time.After(d):
+	case <-tc.errorSignal:
+	}
+}
+
+// WaitForN the specific condition for up to a specified duration. Records a test error
+// if time is out and condition does not become true. If error is signaled
+// while waiting the function will return false, but will not record additional
+// test error (we assume that signaled error is already recorded in indicateError()).
+func (tc *MultiReceiverTestCase) WaitForN(cond func() bool, duration time.Duration, errMsg interface{}) bool {
+	startTime := time.Now()
+
+	// Start with 5 ms waiting interval between condition re-evaluation.
+	waitInterval := time.Millisecond * 5
+
+	for {
+		if cond() {
+			return true
+		}
+
+		select {
+		case <-time.After(waitInterval):
+		case <-tc.errorSignal:
+			return false
+		}
+
+		// Increase waiting interval exponentially up to 500 ms.
+		if waitInterval < time.Millisecond*500 {
+			waitInterval *= 2
+		}
+
+		if time.Since(startTime) > duration {
+			// Waited too long
+			tc.T.Error("Time out waiting for", errMsg)
+			return false
+		}
+	}
+}
+
+// WaitFor is like WaitForN but with a fixed duration of 10 seconds
+func (tc *MultiReceiverTestCase) WaitFor(cond func() bool, errMsg interface{}) bool {
+	return tc.WaitForN(cond, time.Second*60, errMsg)
+}
+
+func (tc *MultiReceiverTestCase) indicateError(err error) {
+	// Print to log for visibility
+	log.Print(err.Error())
+
+	// Indicate error for the test
+	tc.T.Error(err.Error())
+
+	tc.errorCause = err.Error()
+
+	// Signal the error via channel
+	close(tc.errorSignal)
+}
+
+func (tc *MultiReceiverTestCase) logStats() {
+	t := time.NewTicker(tc.resourceSpec.ResourceCheckPeriod)
+	defer t.Stop()
+
+	for {
+		select {
+		case <-t.C:
+			tc.logStatsOnce()
+		case <-tc.doneSignal:
+			return
+		}
+	}
+}
+
+func (tc *MultiReceiverTestCase) logStatsOnce() {
+
+	log.Printf("%s | %s | ",
+		tc.agentProc.GetResourceConsumption(),
+		tc.LoadGenerator.GetStats())
+
+	for _, backend := range tc.MockBackends {
+		log.Printf("%s | ",
+			backend.GetStats())
+	}
+}
+

testbed/testbed/multi_receiver_validator.go

@@ -0,0 +1,43 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package testbed // import "github.com/open-telemetry/opentelemetry-collector-contrib/testbed/testbed"
+
+// MultiReceiverValidator defines the interface for validating and reporting test results.
+type MultiReceiverTestCaseValidator struct {
+	// Validate executes validation routines and test assertions.
+	Validate func(tc *MultiReceiverTestCase)
+
+	dataProvider      DataProvider
+	assertionFailures []*TraceAssertionFailure
+}
+
+
+func NewMultiReceiverTestCaseValidator(
+  senderName string, 
+  provider DataProvider,
+  validator func(tc *MultiReceiverTestCase),
+) *MultiReceiverTestCaseValidator {
+	return &MultiReceiverTestCaseValidator{
+		dataProvider: provider,
+    Validate: validator,
+	}
+}
+
+func (v *MultiReceiverTestCaseValidator) RecordResults(tc *MultiReceiverTestCase) {
+	var result string
+	if tc.T.Failed() {
+		result = "FAIL"
+	} else {
+		result = "PASS"
+	}
+
+	// Remove "Test" prefix from test name.
+	testName := tc.T.Name()[4:]
+	tc.ResultsSummary.Add(tc.T.Name(), &MultiReceiverTestResult{
+		testName:                   testName,
+		result:                     result,
+		traceAssertionFailureCount: uint64(len(v.assertionFailures)),
+		traceAssertionFailures:     v.assertionFailures,
+	})
+}

testbed/testbed/options.go

@@ -42,6 +42,9 @@ func (rs *ResourceSpec) isSpecified() bool {
 // TestCaseOption defines a TestCase option.
 type TestCaseOption func(t *TestCase)
 
+// MultiReceiverTestCaseOption defines a MultiReceiverTestCase option.
+type MultiReceiverTestCaseOption func(t *MultiReceiverTestCase)
+
 // WithSkipResults disables writing out results file for a TestCase.
 func WithSkipResults() TestCaseOption {
 	return func(tc *TestCase) {