Updating Python examples to 0.36.1 (#64)

* WIP: Updating Python examples to 0.36.1

* Adding some ECS examples

* Adding more ECS examples

* Adding final ECS examples

Author: garnaat

.gitignore

@@ -8,4 +8,5 @@ __pycache__
 *~
 .cdk.staging
 cdk.out
+.vscode
 

python/application-load-balancer/app.py

@@ -3,12 +3,12 @@
     aws_autoscaling as autoscaling,
     aws_ec2 as ec2,
     aws_elasticloadbalancingv2 as elbv2,
-    cdk,
+    core,
 )
 
 
-class LoadBalancerStack(cdk.Stack):
-    def __init__(self, app: cdk.App, id: str) -> None:
+class LoadBalancerStack(core.Stack):
+    def __init__(self, app: core.App, id: str) -> None:
         super().__init__(app, id)
 
         vpc = ec2.Vpc(self, "VPC")
@@ -17,13 +17,16 @@ def __init__(self, app: cdk.App, id: str) -> None:
             self,
             "ASG",
             vpc=vpc,
-            instance_type=ec2.InstanceTypePair(
-                ec2.InstanceClass.Burstable2, ec2.InstanceSize.Micro
+            instance_type=ec2.InstanceType.of(
+                ec2.InstanceClass.BURSTABLE2, ec2.InstanceSize.MICRO
             ),
             machine_image=ec2.AmazonLinuxImage(),
         )
 
-        lb = elbv2.ApplicationLoadBalancer(self, "LB", vpc=vpc, internet_facing=True)
+        lb = elbv2.ApplicationLoadBalancer(
+            self, "LB",
+            vpc=vpc,
+            internet_facing=True)
 
         listener = lb.add_listener("Listener", port=80)
         listener.add_targets("Target", port=80, targets=[asg])
@@ -32,6 +35,6 @@ def __init__(self, app: cdk.App, id: str) -> None:
         asg.scale_on_request_count("AModestLoad", target_requests_per_second=1)
 
 
-app = cdk.App()
+app = core.App()
 LoadBalancerStack(app, "LoadBalancerStack")
-app.run()
+app.synth()

python/classic-load-balancer/app.py

@@ -1,36 +1,38 @@
-from aws_cdk import cdk
 from aws_cdk import (
     aws_autoscaling as autoscaling,
     aws_ec2 as ec2,
     aws_elasticloadbalancing as elb,
+    core
 )
 
 
-class LoadBalancerStack(cdk.Stack):
-    def __init__(self, app: cdk.App, id: str, **kwargs) -> None:
+class LoadBalancerStack(core.Stack):
+    def __init__(self, app: core.App, id: str, **kwargs) -> None:
         super().__init__(app, id, **kwargs)
 
         vpc = ec2.Vpc(self, "VPC")
 
         asg = autoscaling.AutoScalingGroup(
-            self,
-            "ASG",
+            self, "ASG",
             vpc=vpc,
-            instance_type=ec2.InstanceTypePair(
-                ec2.InstanceClass.Burstable2, ec2.InstanceSize.Micro
+            instance_type=ec2.InstanceType.of(
+                ec2.InstanceClass.BURSTABLE2, ec2.InstanceSize.MICRO
             ),
             machine_image=ec2.AmazonLinuxImage(),
         )
 
         lb = elb.LoadBalancer(
-            self, "LB", vpc=vpc, internet_facing=True, health_check={"port": 80}
+            self, "LB",
+            vpc=vpc,
+            internet_facing=True,
+            health_check={"port": 80}
         )
         lb.add_target(asg)
 
         listener = lb.add_listener(external_port=80)
         listener.connections.allow_default_port_from_any_ipv4("Open to the world")
 
 
-app = cdk.App()
+app = core.App()
 LoadBalancerStack(app, "LoadBalancerStack")
-app.run()
+app.synth()

python/custom-resource/app.py

@@ -1,26 +1,28 @@
-from aws_cdk import cdk
+from aws_cdk import core
 
 from my_custom_resource import MyCustomResource
 
 
-# A Stack that sets up MyCustomResource and shows how to get an attribute from it.
-class MyStack(cdk.Stack):
-    def __init__(self, scope: cdk.App, id: str, **kwargs) -> None:
+# A Stack that sets up MyCustomResource and shows how to get an
+# attribute from it.
+
+class MyStack(core.Stack):
+    def __init__(self, scope: core.App, id: str, **kwargs) -> None:
         super().__init__(scope, id, **kwargs)
 
         resource = MyCustomResource(
-            self, "DemoResource", message="CustomResource says hello"
+            self, "DemoResource",
+            message="CustomResource says hello",
         )
 
         # Publish the custom resource output
-        cdk.CfnOutput(
-            self,
-            "ResponseMessage",
+        core.CfnOutput(
+            self, "ResponseMessage",
             description="The message that came back from the Custom Resource",
             value=resource.response,
         )
 
 
-app = cdk.App()
+app = core.App()
 MyStack(app, "CustomResourceDemoStack")
-app.run()
+app.synth()

python/custom-resource/custom-resource-handler.py

@@ -3,7 +3,8 @@ def main(event, context):
     import cfnresponse
     log.getLogger().setLevel(log.INFO)
 
-    # This needs to change if there are to be multiple resources in the same stack
+    # This needs to change if there are to be multiple resources
+    # in the same stack
     physical_id = 'TheOnlyCustomResource'
 
     try:
@@ -19,7 +20,8 @@ def main(event, context):
             'Response': 'You said "%s"' % message
         }
 
-        cfnresponse.send(event, context, cfnresponse.SUCCESS, attributes, physical_id)
+        cfnresponse.send(event, context, cfnresponse.SUCCESS,
+                         attributes, physical_id)
     except Exception as e:
         log.exception(e)
         # cfnresponse's error message is always "see CloudWatch"

python/custom-resource/my_custom_resource.py

@@ -1,25 +1,29 @@
-from aws_cdk import cdk
-from aws_cdk import aws_cloudformation as cfn, aws_lambda as lambda_
+from aws_cdk import (
+    aws_cloudformation as cfn,
+    aws_lambda as lambda_,
+    core
+)
 
 
-class MyCustomResource(cdk.Construct):
-    def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
-        super().__init__(scope, id,)
+class MyCustomResource(core.Construct):
+    def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
+        super().__init__(scope, id)
 
         with open("custom-resource-handler.py", encoding="utf-8") as fp:
             code_body = fp.read()
 
         resource = cfn.CustomResource(
             self, "Resource",
-            provider=cfn.CustomResourceProvider.lambda_(lambda_.SingletonFunction(
-                self,
-                "Singleton",
-                uuid="f7d4f730-4ee1-11e8-9c2d-fa7ae01bbebc",
-                code=lambda_.InlineCode(code_body),
-                handler="index.main",
-                timeout=300,
-                runtime=lambda_.Runtime.PYTHON27,
-            )),
+            provider=cfn.CustomResourceProvider.lambda_(
+                lambda_.SingletonFunction(
+                    self, "Singleton",
+                    uuid="f7d4f730-4ee1-11e8-9c2d-fa7ae01bbebc",
+                    code=lambda_.InlineCode(code_body),
+                    handler="index.main",
+                    timeout=core.Duration.seconds(300),
+                    runtime=lambda_.Runtime.PYTHON_3_7,
+                )
+            ),
             properties=kwargs,
         )
 

python/ecs/cluster/app.py

@@ -2,13 +2,13 @@
     aws_autoscaling as autoscaling,
     aws_ec2 as ec2,
     aws_ecs as ecs,
-    cdk,
+    core,
 )
 
 
-class ECSCluster(cdk.Stack):
+class ECSCluster(core.Stack):
 
-    def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
+    def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
         super().__init__(scope, id, *kwargs)
 
         vpc = ec2.Vpc(
@@ -21,10 +21,10 @@ def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
             instance_type=ec2.InstanceType("t2.xlarge"),
             machine_image=ecs.EcsOptimizedAmi(),
             associate_public_ip_address=True,
-            update_type=autoscaling.UpdateType.ReplacingUpdate,
+            update_type=autoscaling.UpdateType.REPLACING_UPDATE,
             desired_capacity=3,
             vpc=vpc,
-            vpc_subnets={'subnetType': ec2.SubnetType.Public}
+            vpc_subnets={'subnetType': ec2.SubnetType.PUBLIC}
         )
 
         cluster = ecs.Cluster(
@@ -36,6 +36,6 @@ def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
         cluster.add_capacity("DefaultAutoScalingGroup",
                              instance_type=ec2.InstanceType("t2.micro"))
 
-app = cdk.App()
+app = core.App()
 ECSCluster(app, "MyFirstEcsCluster")
-app.run()
+app.synth()

python/ecs/ecs-load-balanced-service/app.py

@@ -2,13 +2,13 @@
     aws_ec2 as ec2,
     aws_ecs as ecs,
     aws_ecs_patterns as ecs_patterns,
-    cdk,
+    core,
 )
 
 
-class BonjourECS(cdk.Stack):
+class BonjourECS(core.Stack):
 
-    def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
+    def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
         super().__init__(scope, id, *kwargs)
 
         vpc = ec2.Vpc(
@@ -31,11 +31,11 @@ def __init__(self, scope: cdk.Construct, id: str, **kwargs) -> None:
             image=ecs.ContainerImage.from_registry("amazon/amazon-ecs-sample")
         )
 
-        cdk.CfnOutput(
+        core.CfnOutput(
             self, "LoadBalancerDNS",
             value=ecs_service.load_balancer.load_balancer_dns_name
         )
 
-app = cdk.App()
+app = core.App()
 BonjourECS(app, "Bonjour")
-app.run()
+app.synth()

python/ecs/ecs-service-with-advanced-alb-config/app.py

@@ -2,11 +2,11 @@
     aws_ec2 as ec2,
     aws_ecs as ecs,
     aws_elasticloadbalancingv2 as elbv2,
-    cdk,
+    core,
 )
 
-app = cdk.App()
-stack = cdk.Stack(app, "aws-ec2-integ-ecs")
+app = core.App()
+stack = core.Stack(app, "aws-ec2-integ-ecs")
 
 # Create a cluster
 vpc = ec2.Vpc(
@@ -32,7 +32,7 @@
 container.add_port_mappings(
     container_port=80,
     host_port=8080,
-    protocol=ecs.Protocol.Tcp
+    protocol=ecs.Protocol.TCP
 )
 
 # Create Service
@@ -66,9 +66,9 @@
     }
 )
 
-cdk.CfnOutput(
+core.CfnOutput(
     stack, "LoadBalancerDNS",
     value=lb.load_balancer_dns_name
 )
 
-app.run()
+app.synth()

python/ecs/ecs-service-with-task-placement/app.py

@@ -2,11 +2,11 @@
     aws_ec2 as ec2,
     aws_ecs as ecs,
     aws_elasticloadbalancingv2 as elbv2,
-    cdk,
+    core,
 )
 
-app = cdk.App()
-stack = cdk.Stack(app, "aws-ecs-integ-ecs")
+app = core.App()
+stack = core.Stack(app, "aws-ecs-integ-ecs")
 
 # Create a cluster
 vpc = ec2.Vpc(
@@ -37,7 +37,7 @@
 container.add_port_mappings(
     container_port=80,
     host_port=8080,
-    protocol=ecs.Protocol.Tcp
+    protocol=ecs.Protocol.TCP
 )
 
 # Create Service
@@ -46,7 +46,10 @@
     cluster=cluster,
     task_definition=task_definition,
 )
-service.place_packed_by(ecs.BinPackResource.Memory)
-service.place_spread_across(ecs.BuiltInAttributes.AVAILABILITY_ZONE)
 
-app.run()
+service.add_placement_strategies(
+    ecs.PlacementStrategy.packed_by(ecs.BinPackResource.MEMORY))
+service.add_placement_strategies(
+    ecs.PlacementStrategy.spread_across(
+        ecs.BuiltInAttributes.AVAILABILITY_ZONE))
+app.synth()