DataDog · rithikanarayan · Apr 3, 2026 · Apr 3, 2026
@@ -191,6 +191,7 @@ def __call__(self, event, context, **kwargs):
             if self.blocking_response:
                 return self.blocking_response
             self.response = self.func(event, context, **kwargs)
+            return self.response
         except BlockingException:
             self.blocking_response = get_asm_blocked_response(self.event_source)
         except Exception:
@@ -203,10 +204,8 @@ def __call__(self, event, context, **kwargs):
             raise
         finally:
             self._after(event, context)
-
-        if self.blocking_response:
-            return self.blocking_response
-        return self.response
+            if self.blocking_response:
+                return self.blocking_response
 
     def _inject_authorizer_span_headers(self, request_id):
         reference_span = self.inferred_span if self.inferred_span else self.span

@@ -75,7 +75,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "true",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -87,6 +86,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "span.name": "aws.lambda",
           "function_trigger.event_source": "api-gateway",
           "function_trigger.event_source_arn": "XXXX",
+          "span.kind": "server",
           "http.url": "https://XXXX.execute-api.us-east-2.amazonaws.com/Prod/",
           "http.method": "GET",
           "http.route": "/",
@@ -174,7 +174,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -227,7 +227,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "meta": {
           "runtime-id": "XXXX",
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -237,6 +236,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "language": "python"
         },
         "metrics": {
@@ -322,7 +322,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -455,7 +455,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -465,6 +464,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "dynamodb",
           "function_trigger.event_source_arn": "XXXX"
         },
@@ -550,7 +550,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -635,7 +635,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -645,6 +644,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "eventbridge"
         },
         "metrics": {
@@ -729,7 +729,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -824,7 +824,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -836,6 +835,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "span.name": "aws.lambda",
           "function_trigger.event_source": "api-gateway",
           "function_trigger.event_source_arn": "XXXX$default",
+          "span.kind": "server",
           "http.url": "https://XXXX.execute-api.eu-west-1.amazonaws.com/httpapi/get",
           "http.method": "GET",
           "http.route": "/httpapi/get",
@@ -923,7 +923,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -1015,7 +1015,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -1025,6 +1024,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "kinesis",
           "function_trigger.event_source_arn": "XXXX"
         },
@@ -1110,7 +1110,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -1211,7 +1211,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -1221,6 +1220,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "s3",
           "function_trigger.event_source_arn": "XXXX"
         },
@@ -1306,7 +1306,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -1396,7 +1396,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -1406,6 +1405,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "sns",
           "function_trigger.event_source_arn": "XXXX"
         },
@@ -1491,7 +1491,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -1580,7 +1580,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -1590,6 +1589,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "datadog_lambda": "X.X.X",
           "dd_trace": "X.X.X",
           "span.name": "aws.lambda",
+          "span.kind": "server",
           "function_trigger.event_source": "sqs",
           "function_trigger.event_source_arn": "XXXX"
         },
@@ -1675,7 +1675,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",
@@ -1770,7 +1770,6 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
         "duration": "XXXX",
         "meta": {
           "_dd.origin": "lambda",
-          "span.kind": "server",
           "cold_start": "false",
           "function_arn": "arn:aws:lambda:eu-west-1:XXXX:eu-west-1-tests-python-XXXX-sync-metrics_python310",
           "function_version": "$LATEST",
@@ -1782,6 +1781,7 @@ HTTP GET https://www.datadoghq.com/ Headers: ["Accept-Encoding:gzip, deflate","A
           "span.name": "aws.lambda",
           "function_trigger.event_source": "api-gateway",
           "function_trigger.event_source_arn": "XXXX",
+          "span.kind": "server",
           "http.url": "https://XXXX.execute-api.eu-west-1.amazonaws.com",
           "http.status_code": "200"
         },
@@ -1867,7 +1867,7 @@ HTTP POST https://api.datadoghq.com/api/v1/distribution_points Headers: ["Accept
           "http.method": "POST",
           "http.url": "https://api.datadoghq.com/api/v1/distribution_points",
           "out.host": "api.datadoghq.com",
-          "http.status_code": "403",
+          "http.status_code": "202",
           "http.useragent": "datadogpy/XX (python XX; os linux; arch XXXX)",
           "_dd.p.dm": "-0",
           "_dd.p.tid": "XXXX",