Aspects

class aws_cdk.core.Aspects(*args: Any, **kwargs)

Bases: object

Aspects can be applied to CDK tree scopes and can operate on the tree before synthesis.

ExampleMetadata

nofixture infused

Example:

import aws_cdk.core as cdk
from constructs import Construct, IConstruct

class MyAspect(cdk.IAspect):
    def visit(self, node):
        if node instanceof cdk.CfnResource && node.cfn_resource_type == "Foo::Bar":
            self.error(node, "we do not want a Foo::Bar resource")

    def error(self, node, message):
        cdk.Annotations.of(node).add_error(message)

class MyStack(cdk.Stack):
    def __init__(self, scope, id):
        super().__init__(scope, id)

        stack = cdk.Stack()
        cdk.CfnResource(stack, "Foo",
            type="Foo::Bar",
            properties={
                "Fred": "Thud"
            }
        )
        cdk.Aspects.of(stack).add(MyAspect())

Methods

add(aspect)

Adds an aspect to apply this scope before synthesis.

Parameters

aspect (IAspect) – The aspect to add.

Return type

None

Attributes

aspects

The list of aspects which were directly applied on this scope.

Return type

List[IAspect]

Static Methods

classmethod of(scope)

Returns the Aspects object associated with a construct scope.

Parameters

scope (IConstruct) – The scope for which these aspects will apply.

Return type

Aspects