fix lambda get function concurrency

Signed-off-by: Sylvain Hellegouarch <[email protected]>

Author: Lawouach

CHANGELOG.md

@@ -2,7 +2,16 @@
 
 ## [Unreleased][]
 
-[Unreleased]: https://github.com/chaostoolkit-incubator/chaostoolkit-aws/compare/0.32.0...HEAD
+[Unreleased]: https://github.com/chaostoolkit-incubator/chaostoolkit-aws/compare/0.32.1...HEAD
+
+## [0.32.1][] - 2024-02-23
+
+[0.32.1]: https://github.com/chaostoolkit-incubator/chaostoolkit-aws/compare/0.32.0...0.32.1
+
+### Fixed
+
+- Use `boto3.lambda.get_function_concurrency` to retrieve the reserved
+  `ReservedConcurrentExecutions` from a lambda function
 
 ## [0.32.0][] - 2024-02-23
 

chaosaws/awslambda/probes.py

@@ -23,8 +23,8 @@ def get_function_concurrency(
     Get configuration information of lambda by its function name
     """
     client = aws_client("lambda", configuration, secrets)
-    result = client.get_function(FunctionName=function_name)
-    return result["Concurrency"]["ReservedConcurrentExecutions"]
+    result = client.get_function_concurrency(FunctionName=function_name)
+    return result["ReservedConcurrentExecutions"]
 
 
 def get_function_timeout(

tests/awslambda/test_awslambda_probes.py

@@ -35,7 +35,9 @@ def test_aws_lambda_get_function_concurrency(aws_client):
     aws_client.return_value = client
     lambda_function_name = "my-lambda-function"
     get_function_concurrency(lambda_function_name)
-    client.get_function.assert_called_with(FunctionName=lambda_function_name)
+    client.get_function_concurrency.assert_called_with(
+        FunctionName=lambda_function_name
+    )
 
 
 @patch("chaosaws.awslambda.probes.aws_client", autospec=True)