Make container mapping public (#315)

* Make container mapping public

* update issue nu

* update change type

.chloggen/dinesh.gurumurthy_make-container-mapping-public.yaml

@@ -0,0 +1,12 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+# The name of the component (e.g. pkg/quantile)
+component: pkg/otlp/attributes
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Make container mapping public
+# The PR related to this change
+issues: [315]
+# (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:

pkg/otlp/attributes/attributes.go

@@ -36,9 +36,9 @@ var (
 		conventions.AttributeServiceVersion:        "version",
 	}
 
-	// containerMappings defines the mapping between OpenTelemetry semantic conventions
+	// ContainerMappings defines the mapping between OpenTelemetry semantic conventions
 	// and Datadog Agent conventions for containers.
-	containerMappings = map[string]string{
+	ContainerMappings = map[string]string{
 		// Containers
 		conventions.AttributeContainerID:        "container_id",
 		conventions.AttributeContainerName:      "container_name",
@@ -172,7 +172,7 @@ func ContainerTagsFromResourceAttributes(attrs pcommon.Map) map[string]string {
 	ddtags := make(map[string]string)
 	attrs.Range(func(key string, value pcommon.Value) bool {
 		// Semantic Conventions
-		if datadogKey, found := containerMappings[key]; found && value.Str() != "" {
+		if datadogKey, found := ContainerMappings[key]; found && value.Str() != "" {
 			ddtags[datadogKey] = value.Str()
 		}
 		// Custom (datadog.container.tag namespace)
@@ -196,7 +196,7 @@ func ContainerTagsFromResourceAttributes(attrs pcommon.Map) map[string]string {
 func ContainerTagFromAttributes(attr map[string]string) map[string]string {
 	ddtags := make(map[string]string)
 	for key, val := range attr {
-		datadogKey, found := containerMappings[key]
+		datadogKey, found := ContainerMappings[key]
 		if !found {
 			continue
 		}