add infra common stack

aws_packages/infra/common_stack.py

@@ -0,0 +1,71 @@
+from os import path
+
+from aws_cdk import CfnOutput, Duration, RemovalPolicy, Stack
+from aws_cdk import aws_apigateway as apigw
+from aws_cdk import aws_dynamodb as dynamodb
+from aws_cdk import aws_lambda as lambda_
+from aws_cdk.aws_apigateway import Cors, CorsOptions
+from constructs import Construct
+
+
+class CommonServiceStack(Stack):
+    def __init__(
+        self, scope: Construct, construct_id: str, stage_name="dev", **kwargs
+    ) -> None:
+        super().__init__(scope, construct_id, **kwargs)
+
+        self._stage_name = stage_name
+
+    def _create_general_dynamo_table(self, name: str, stage_name: str):
+        return dynamodb.TableV2(
+            self,
+            f"{self._stage_name}-{name}-table",
+            table_name=f"{self._stage_name}-{name}-table",
+            partition_key=dynamodb.Attribute(
+                name="pk", type=dynamodb.AttributeType.STRING
+            ),
+            contributor_insights=True,
+            table_class=dynamodb.TableClass.STANDARD,
+            point_in_time_recovery=True,
+            removal_policy=(
+                RemovalPolicy.RETAIN
+                if stage_name in ["prod"]
+                else RemovalPolicy.DESTROY
+            ),
+        )
+
+    def _create_python_lambda_function(
+        self,
+        identifier: str,
+        source: str,
+        lambda_layers: list,
+        envs: dict,
+        function_handler: str,
+    ):
+        _lambda_function = lambda_.Function(
+            self,
+            identifier,
+            function_name=identifier,
+            code=lambda_.Code.from_asset(path.join(source)),
+            handler=function_handler,
+            runtime=lambda_.Runtime.PYTHON_3_12,
+            timeout=Duration.seconds(300),
+            layers=lambda_layers,
+            environment=envs,
+        )
+        return _lambda_function
+
+    def _create_api_gw(self, identifier: str, handler_function):
+        api_gateway_resource = apigw.LambdaRestApi(
+            self,
+            identifier,
+            handler=handler_function,
+            proxy=False,
+            default_cors_preflight_options=CorsOptions(
+                allow_origins=Cors.ALL_ORIGINS,
+                allow_methods=Cors.ALL_METHODS,
+                allow_credentials=True,
+                allow_headers=Cors.DEFAULT_HEADERS,
+            ),
+        )
+        return api_gateway_resource