Add check if result.payload is empty

Author: mchrza

aws_s3--0.0.1.sql

@@ -368,17 +368,12 @@ CREATE OR REPLACE FUNCTION aws_lambda.invoke(IN function_name aws_commons._lambd
     RETURNS RECORD AS
 $BODY$
     BEGIN
-        IF invocation_type = 'event' THEN
-			PERFORM aws_lambda._boto3_invoke(function_name, req_payload::TEXT,
-		                                      region, invocation_type, log_type,
-		                                      context::TEXT, qualifier);
-        ELSE
-            SELECT result.status_code, result.payload::JSON, result.executed_version, result.log_result
+        SELECT result.status_code, (CASE WHEN (result.payload = '') THEN '{}'::JSON ELSE result.payload::JSON END),
+               result.executed_version, result.log_result
             FROM aws_lambda._boto3_invoke(function_name, req_payload::TEXT,
-                                          region, invocation_type, log_type,
-                                          context::TEXT, qualifier) result
+                                      region, invocation_type, log_type,
+                                      context::TEXT, qualifier) result
             INTO status_code, payload, executed_version, log_result;
-        END IF;
     END
 $BODY$
 LANGUAGE plpgsql VOLATILE;