[exporter/dynatrace] rename struct to keep expected `exporter.Factory…

…` and pass checkapi (open-telemetry#27048)

**Description:** 
Rename struct to keep expected exporter.Factory and pass checkapi

**Link to tracking Issue:** 

open-telemetry#26304

**Testing:**
go run cmd/checkapi/main.go .
make chlog-validate
go test for dynatraceexporter

**Documentation:**

.chloggen/dynatraceexporter-checkapi-26304.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: dynatraceexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Rename struct to keep expected `exporter.Factory` and pass checkapi.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [26304]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api]

cmd/checkapi/allowlist.txt

@@ -1,6 +1,5 @@
 connector/servicegraphconnector
 exporter/coralogixexporter
-exporter/dynatraceexporter
 exporter/kafkaexporter
 exporter/pulsarexporter
 extension/observer/ecsobserver

exporter/dynatraceexporter/factory.go

@@ -8,7 +8,7 @@ import (
 
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/config/confighttp"
-	exp "go.opentelemetry.io/collector/exporter"
+	"go.opentelemetry.io/collector/exporter"
 	"go.opentelemetry.io/collector/exporter/exporterhelper"
 
 	dtconfig "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter/config"
@@ -17,11 +17,11 @@ import (
 )
 
 // NewFactory creates a Dynatrace exporter factory
-func NewFactory() exp.Factory {
-	return exp.NewFactory(
+func NewFactory() exporter.Factory {
+	return exporter.NewFactory(
 		metadata.Type,
 		createDefaultConfig,
-		exp.WithMetrics(createMetricsExporter, metadata.MetricsStability),
+		exporter.WithMetrics(createMetricsExporter, metadata.MetricsStability),
 	)
 }
 
@@ -45,9 +45,9 @@ func createDefaultConfig() component.Config {
 // createMetricsExporter creates a metrics exporter based on this
 func createMetricsExporter(
 	ctx context.Context,
-	set exp.CreateSettings,
+	set exporter.CreateSettings,
 	c component.Config,
-) (exp.Metrics, error) {
+) (exporter.Metrics, error) {
 
 	cfg := c.(*dtconfig.Config)
 

exporter/dynatraceexporter/metrics_exporter.go

@@ -17,7 +17,7 @@ import (
 	"github.com/dynatrace-oss/dynatrace-metric-utils-go/metric/dimensions"
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/consumer/consumererror"
-	exp "go.opentelemetry.io/collector/exporter"
+	"go.opentelemetry.io/collector/exporter"
 	"go.opentelemetry.io/collector/pdata/pmetric"
 	"go.uber.org/zap"
 
@@ -31,8 +31,8 @@ const (
 	cMaxAgeSeconds        = 900
 )
 
-// NewExporter exports to a Dynatrace Metrics v2 API
-func newMetricsExporter(params exp.CreateSettings, cfg *config.Config) *exporter {
+// newMetricsExporter exports to a Dynatrace Metrics v2 API
+func newMetricsExporter(params exporter.CreateSettings, cfg *config.Config) *metricsExporter {
 	var confDefaultDims []dimensions.Dimension
 	for key, value := range cfg.DefaultDimensions {
 		confDefaultDims = append(confDefaultDims, dimensions.NewDimension(key, value))
@@ -48,7 +48,7 @@ func newMetricsExporter(params exp.CreateSettings, cfg *config.Config) *exporter
 	prevPts := ttlmap.New(cSweepIntervalSeconds, cMaxAgeSeconds)
 	prevPts.Start()
 
-	return &exporter{
+	return &metricsExporter{
 		settings:          params.TelemetrySettings,
 		cfg:               cfg,
 		defaultDimensions: defaultDimensions,
@@ -57,8 +57,8 @@ func newMetricsExporter(params exp.CreateSettings, cfg *config.Config) *exporter
 	}
 }
 
-// exporter forwards metrics to a Dynatrace agent
-type exporter struct {
+// metricsExporter forwards metrics to a Dynatrace agent
+type metricsExporter struct {
 	settings   component.TelemetrySettings
 	cfg        *config.Config
 	client     *http.Client
@@ -82,7 +82,7 @@ func dimensionsFromTags(tags []string) dimensions.NormalizedDimensionList {
 	return dimensions.NewNormalizedDimensionList(dims...)
 }
 
-func (e *exporter) PushMetricsData(ctx context.Context, md pmetric.Metrics) error {
+func (e *metricsExporter) PushMetricsData(ctx context.Context, md pmetric.Metrics) error {
 	if e.isDisabled {
 		return nil
 	}
@@ -109,7 +109,7 @@ func (e *exporter) PushMetricsData(ctx context.Context, md pmetric.Metrics) erro
 	return nil
 }
 
-func (e *exporter) serializeMetrics(md pmetric.Metrics) []string {
+func (e *metricsExporter) serializeMetrics(md pmetric.Metrics) []string {
 	var lines []string
 
 	resourceMetrics := md.ResourceMetrics()
@@ -154,7 +154,7 @@ var lastLog int64
 
 // send sends a serialized metric batch to Dynatrace.
 // An error indicates all lines were dropped regardless of the returned number.
-func (e *exporter) send(ctx context.Context, lines []string) error {
+func (e *metricsExporter) send(ctx context.Context, lines []string) error {
 	e.settings.Logger.Debug("Exporting", zap.Int("lines", len(lines)))
 
 	if now := time.Now().Unix(); len(lines) > apiconstants.GetPayloadLinesLimit() && now-lastLog > 60 {
@@ -185,7 +185,7 @@ func (e *exporter) send(ctx context.Context, lines []string) error {
 
 // send sends a serialized metric batch to Dynatrace.
 // An error indicates all lines were dropped regardless of the returned number.
-func (e *exporter) sendBatch(ctx context.Context, lines []string) error {
+func (e *metricsExporter) sendBatch(ctx context.Context, lines []string) error {
 	message := strings.Join(lines, "\n")
 	e.settings.Logger.Debug(
 		"sending a batch of metric lines",
@@ -278,7 +278,7 @@ func (e *exporter) sendBatch(ctx context.Context, lines []string) error {
 }
 
 // start starts the exporter
-func (e *exporter) start(_ context.Context, host component.Host) (err error) {
+func (e *metricsExporter) start(_ context.Context, host component.Host) (err error) {
 	client, err := e.cfg.HTTPClientSettings.ToClient(host, e.settings)
 	if err != nil {
 		e.settings.Logger.Error("Failed to construct HTTP client", zap.Error(err))
@@ -290,7 +290,7 @@ func (e *exporter) start(_ context.Context, host component.Host) (err error) {
 	return nil
 }
 
-func (e *exporter) unmarshalResponseBody(resp *http.Response) (metricsResponse, error) {
+func (e *metricsExporter) unmarshalResponseBody(resp *http.Response) (metricsResponse, error) {
 	bodyBytes, err := io.ReadAll(resp.Body)
 	responseBody := metricsResponse{}
 	if err != nil {

exporter/dynatraceexporter/metrics_exporter_test.go

@@ -159,7 +159,7 @@ func Test_exporter_PushMetricsData(t *testing.T) {
 	}
 
 	t.Run(test.name, func(t *testing.T) {
-		e := &exporter{
+		e := &metricsExporter{
 			settings: test.fields.settings,
 			cfg:      test.fields.cfg,
 			client:   test.fields.client,
@@ -305,7 +305,7 @@ func Test_SumMetrics(t *testing.T) {
 			prevPts := ttlmap.New(cSweepIntervalSeconds, cMaxAgeSeconds)
 
 			// set up the exporter
-			exp := &exporter{
+			exp := &metricsExporter{
 				settings: componenttest.NewNopTelemetrySettings(),
 				cfg: &config.Config{
 					APIToken:           "token",
@@ -368,7 +368,7 @@ func Test_exporter_PushMetricsData_EmptyPayload(t *testing.T) {
 	noneMetric := metrics.AppendEmpty()
 	noneMetric.SetName("none")
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -405,7 +405,7 @@ func Test_exporter_PushMetricsData_isDisabled(t *testing.T) {
 	intGaugeDataPoint.SetIntValue(10)
 	intGaugeDataPoint.SetTimestamp(testTimestamp)
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -431,7 +431,7 @@ func Test_exporter_send_BadRequest(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -456,7 +456,7 @@ func Test_exporter_send_Unauthorized(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -481,7 +481,7 @@ func Test_exporter_send_TooLarge(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -506,7 +506,7 @@ func Test_exporter_send_NotFound(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			APIToken:           "token",
@@ -534,7 +534,7 @@ func Test_exporter_send_TooManyRequests(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			APIToken:           "token",
@@ -557,7 +557,7 @@ func Test_exporter_send_MiscellaneousErrorCode(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			APIToken:           "token",
@@ -588,7 +588,7 @@ func Test_exporter_send_chunking(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	e := &exporter{
+	e := &metricsExporter{
 		settings: componenttest.NewNopTelemetrySettings(),
 		cfg: &config.Config{
 			HTTPClientSettings: confighttp.HTTPClientSettings{Endpoint: ts.URL},
@@ -672,7 +672,7 @@ func Test_exporter_PushMetricsData_Error(t *testing.T) {
 	}
 
 	t.Run(test.name, func(t *testing.T) {
-		e := &exporter{
+		e := &metricsExporter{
 			settings: componenttest.NewNopTelemetrySettings(),
 			cfg:      test.fields.cfg,
 			client:   test.fields.client,