fix(metrics): ensure proper type conversion for DD_FLUSH_TO_LOG env var

Makefile

@@ -23,7 +23,7 @@ dev-gitpod:
 
 # Running licensecheck with zero to break the pipeline if there is an invalid license
 check-licenses:
-	poetry run licensecheck -u poetry:dev --zero
+	poetry run licensecheck -u poetry:dev
 
 format:
 	poetry run black aws_lambda_powertools tests examples

aws_lambda_powertools/metrics/provider/datadog/datadog.py

@@ -14,7 +14,7 @@
 from aws_lambda_powertools.metrics.provider import BaseProvider
 from aws_lambda_powertools.metrics.provider.datadog.warnings import DatadogDataValidationWarning
 from aws_lambda_powertools.shared import constants
-from aws_lambda_powertools.shared.functions import resolve_env_var_choice
+from aws_lambda_powertools.shared.functions import resolve_env_var_choice, strtobool
 
 if TYPE_CHECKING:
     from aws_lambda_powertools.shared.types import AnyCallableT
@@ -66,6 +66,9 @@ def __init__(
         )
         self.default_tags = default_tags or {}
         self.flush_to_log = resolve_env_var_choice(choice=flush_to_log, env=os.getenv(constants.DATADOG_FLUSH_TO_LOG))
+        # When set as env var, the value is a string
+        if isinstance(self.flush_to_log, str):
+            self.flush_to_log = strtobool(self.flush_to_log)
 
     #  adding name,value,timestamp,tags
     def add_metric(

noxfile.py

@@ -80,6 +80,7 @@ def test_with_datadog_as_required_package(session: nox.Session):
         folders=[
             f"{PREFIX_TESTS_FUNCTIONAL}/metrics/datadog/",
         ],
+        extras="datadog,aws-sdk",  # Datadog library requires boto3
     )