Add sns factory function for OtelLambdaLayer

Author: lbeschastny

src/middleware/lambda/context.rs

@@ -107,7 +107,13 @@ impl OtelLambdaLayer<GenericLambdaService> {
 }
 
 impl OtelLambdaLayer<PubSubLambdaService> {
-    pub fn sqs(provider: TracerProvider, topic_arn: impl Into<StringValue>) -> Self {
-        Self::pubsub(provider, "AmazonSQS", Some(topic_arn))
+    pub fn sqs(provider: TracerProvider, queue_arn: impl Into<StringValue>) -> Self {
+        Self::pubsub(provider, "AmazonSQS", Some(queue_arn))
+    }
+}
+
+impl OtelLambdaLayer<PubSubLambdaService> {
+    pub fn sns(provider: TracerProvider, topic_arn: impl Into<StringValue>) -> Self {
+        Self::pubsub(provider, "AmazonSNS", Some(topic_arn))
     }
 }