[exporter/awsxrayexporter]: Add support to string resource attributes

.chloggen/awsxrayexporter-string-attrs.yaml

@@ -0,0 +1,18 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: 'enhancement'
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: 'awsxrayexporter'
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: >
+  Add support to string resource attributes of type slice so that it is possible to set those resource attributes using
+  the `OTEL_RESOURCE_ATTRIBUTES` environment variable. Strings are converted to string slices of size 1.
+
+# One or more tracking issues related to the change
+issues: [17503]
+
+# (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:

exporter/awsxrayexporter/internal/translator/aws.go

@@ -117,9 +117,9 @@ func makeAws(attributes map[string]pcommon.Value, resource pcommon.Resource, log
 		case conventions.AttributeAWSECSLaunchtype:
 			launchType = value.Str()
 		case conventions.AttributeAWSLogGroupNames:
-			logGroups = value.Slice()
+			logGroups = normalizeToSlice(value)
 		case conventions.AttributeAWSLogGroupARNs:
-			logGroupArns = value.Slice()
+			logGroupArns = normalizeToSlice(value)
 		}
 		return true
 	})
@@ -268,6 +268,18 @@ func makeAws(attributes map[string]pcommon.Value, resource pcommon.Resource, log
 	return filtered, awsData
 }
 
+// Convert string values to slice of size 1 so that we can also handle resource
+// attributes that are set using the OTEL_RESOURCE_ATTRIBUTES
+func normalizeToSlice(v pcommon.Value) pcommon.Slice {
+	if v.Type() == pcommon.ValueTypeStr {
+		s := pcommon.NewSlice()
+		s.AppendEmpty().SetStr(v.Str())
+		return s
+	}
+
+	return v.Slice()
+}
+
 // Given an array of log group ARNs, create a corresponding amount of LogGroupMetadata objects with log_group and arn
 // populated, or given an array of just log group names, create the LogGroupMetadata objects with arn omitted
 func getLogGroupMetadata(logGroups pcommon.Slice, isArn bool) []awsxray.LogGroupMetadata {

exporter/awsxrayexporter/internal/translator/aws_test.go

@@ -440,6 +440,45 @@ func TestLogGroupsFromArns(t *testing.T) {
 	assert.Contains(t, awsData.CWLogs, cwl2)
 }
 
+// Simulate Log groups being set using OTEL_RESOURCE_ATTRIBUTES
+func TestLogGroupsFromStringResourceAttribute(t *testing.T) {
+	cwl1 := awsxray.LogGroupMetadata{
+		LogGroup: awsxray.String("group1"),
+	}
+
+	attributes := make(map[string]pcommon.Value)
+	resource := pcommon.NewResource()
+	resource.Attributes().PutStr(conventions.AttributeAWSLogGroupNames, "group1")
+
+	filtered, awsData := makeAws(attributes, resource, nil)
+
+	assert.NotNil(t, filtered)
+	assert.NotNil(t, awsData)
+	assert.Equal(t, 1, len(awsData.CWLogs))
+	assert.Contains(t, awsData.CWLogs, cwl1)
+}
+
+// Simulate Log groups arns being set using OTEL_RESOURCE_ATTRIBUTES
+func TestLogGroupsArnsFromStringResourceAttributes(t *testing.T) {
+	group1 := "arn:aws:logs:us-east-1:123456789123:log-group:group1"
+
+	cwl1 := awsxray.LogGroupMetadata{
+		LogGroup: awsxray.String("group1"),
+		Arn:      awsxray.String(group1),
+	}
+
+	attributes := make(map[string]pcommon.Value)
+	resource := pcommon.NewResource()
+	resource.Attributes().PutStr(conventions.AttributeAWSLogGroupARNs, group1)
+
+	filtered, awsData := makeAws(attributes, resource, nil)
+
+	assert.NotNil(t, filtered)
+	assert.NotNil(t, awsData)
+	assert.Equal(t, 1, len(awsData.CWLogs))
+	assert.Contains(t, awsData.CWLogs, cwl1)
+}
+
 func TestLogGroupsFromConfig(t *testing.T) {
 	cwl1 := awsxray.LogGroupMetadata{
 		LogGroup: awsxray.String("logGroup1"),