[exporter/loki] do not expose method (#27050)

Do not export the function `MetricViews` and pass checkapi.

#26304

Co-authored-by: Alex Boten <[email protected]>

.chloggen/lokiexporter-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: lokiexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Do not export the function `MetricViews` 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

@@ -3,7 +3,6 @@ exporter/awskinesisexporter
 exporter/coralogixexporter
 exporter/dynatraceexporter
 exporter/kafkaexporter
-exporter/lokiexporter
 exporter/pulsarexporter
 exporter/sentryexporter
 exporter/sumologicexporter

exporter/lokiexporter/factory.go

@@ -21,7 +21,7 @@ import (
 
 // NewFactory creates a factory for the legacy Loki exporter.
 func NewFactory() exporter.Factory {
-	_ = view.Register(MetricViews()...)
+	_ = view.Register(metricViews()...)
 
 	return exporter.NewFactory(
 		metadata.Type,

exporter/lokiexporter/metrics.go

@@ -12,7 +12,7 @@ var (
 	lokiExporterFailedToSendLogRecordsDueToMissingLabels = stats.Int64("lokiexporter_send_failed_due_to_missing_labels", "Number of log records failed to send because labels were missing", stats.UnitDimensionless)
 )
 
-func MetricViews() []*view.View {
+func metricViews() []*view.View {
 	return []*view.View{
 		{
 			Name:        "lokiexporter_send_failed_due_to_missing_labels",