Marking instanaexporter module as deprecated (open-telemetry#35052)

**Description:** <Describe what has changed.>
Follow open-telemetry#18503, Marking instanaexporter module as deprecated.

**Link to tracking Issue:** open-telemetry#34994

**Testing:** <Describe what testing was performed and which tests were
added.>

**Documentation:** <Describe the documentation added.>

Signed-off-by: Murphy Chen <[email protected]>

.chloggen/mark-instana-exporter-module-deprecated.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: deprecation
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: instanaexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Marking instanaexporter module as deprecated
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [34994]
+
+# (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: []

exporter/instanaexporter/factory.go

@@ -7,6 +7,7 @@ package instanaexporter // import "github.com/open-telemetry/opentelemetry-colle
 
 import (
 	"context"
+	"sync"
 	"time"
 
 	"go.opentelemetry.io/collector/component"
@@ -16,10 +17,13 @@ import (
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/exporter"
 	"go.opentelemetry.io/collector/exporter/exporterhelper"
+	"go.uber.org/zap"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/instanaexporter/internal/metadata"
 )
 
+var once sync.Once
+
 // NewFactory creates an Instana exporter factory
 func NewFactory() exporter.Factory {
 	return exporter.NewFactory(
@@ -41,13 +45,20 @@ func createDefaultConfig() component.Config {
 	}
 }
 
+func logDeprecation(logger *zap.Logger) {
+	once.Do(func() {
+		logger.Warn("instana exporter is deprecated and will be removed in the next release. See https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/34994 for more details.")
+	})
+}
+
 // createTracesExporter creates a trace exporter based on this configuration
 func createTracesExporter(ctx context.Context, set exporter.Settings, config component.Config) (exporter.Traces, error) {
 	cfg := config.(*Config)
 
 	ctx, cancel := context.WithCancel(ctx)
 
 	instanaExporter := newInstanaExporter(cfg, set)
+	logDeprecation(set.Logger)
 
 	return exporterhelper.NewTracesExporter(
 		ctx,

exporter/instanaexporter/go.mod

@@ -1,3 +1,4 @@
+// Deprecated: [v0.109.0] This package is deprecated and will be removed in the next release.
 module github.com/open-telemetry/opentelemetry-collector-contrib/exporter/instanaexporter
 
 go 1.22.0