Stack¶

class aws_cdk.core.Stack(scope=None, name=None, *, env=None, stack_name=None, tags=None)¶

Bases: aws_cdk.core.Construct

A root construct which represents a single CloudFormation stack.

__init__(scope=None, name=None, *, env=None, stack_name=None, tags=None)¶

Creates a new stack.

Parameters

scope (Optional[Construct]) – Parent of this stack, usually a Program instance.
name (Optional[str]) – The name of the CloudFormation stack. Defaults to “Stack”.
props – Stack properties.
env (Optional[Environment]) – The AWS environment (account/region) where this stack will be deployed. Default: - The default-account and default-region context parameters will be used. If they are undefined, it will not be possible to deploy the stack.
stack_name (Optional[str]) – Name to deploy the stack with. Default: - Derived from construct path.
tags (Optional[Mapping[str, str]]) – Stack tags that will be applied to all the taggable resources and the stack itself. Default: {}

Return type

None

Methods

add_dependency(stack, reason=None)¶

Add a dependency between this stack and another stack.

Parameters

stack (Stack) –
reason (Optional[str]) –

Return type

None

format_arn(*, resource, service, account=None, partition=None, region=None, resource_name=None, sep=None)¶

Creates an ARN from components.

If partition, region or account are not specified, the stack’s partition, region and account will be used.

If any component is the empty string, an empty string will be inserted into the generated ARN at the location that component corresponds to.

The ARN will be formatted as follows:

arn:{partition}:{service}:{region}:{account}:{resource}{sep}}{resource-name}

The required ARN pieces that are omitted will be taken from the stack that the ‘scope’ is attached to. If all ARN pieces are supplied, the supplied scope can be ‘undefined’.

Parameters

components –
resource (str) – Resource type (e.g. “table”, “autoScalingGroup”, “certificate”). For some resource types, e.g. S3 buckets, this field defines the bucket name.
service (str) – The service namespace that identifies the AWS product (for example, ‘s3’, ‘iam’, ‘codepipline’).
account (Optional[str]) – The ID of the AWS account that owns the resource, without the hyphens. For example, 123456789012. Note that the ARNs for some resources don’t require an account number, so this component might be omitted. Default: The account the stack is deployed to.
partition (Optional[str]) – The partition that the resource is in. For standard AWS regions, the partition is aws. If you have resources in other partitions, the partition is aws-partitionname. For example, the partition for resources in the China (Beijing) region is aws-cn. Default: The AWS partition the stack is deployed to.
region (Optional[str]) – The region the resource resides in. Note that the ARNs for some resources do not require a region, so this component might be omitted. Default: The region the stack is deployed to.
resource_name (Optional[str]) – Resource name or path within the resource (i.e. S3 bucket object key) or a wildcard such as "*". This is service-dependent.
sep (Optional[str]) – Separator between resource type and the resource. Can be either ‘/’, ‘:’ or an empty string. Will only be used if resourceName is defined. Default: ‘/’

Return type

str

get_logical_id(element)¶

Allocates a stack-unique CloudFormation-compatible logical identity for a specific resource.

This method is called when a CfnElement is created and used to render the initial logical identity of resources. Logical ID renames are applied at this stage.

This method uses the protected method allocateLogicalId to render the logical ID for an element. To modify the naming scheme, extend the Stack class and override this method.

Parameters: element (CfnElement) – The CloudFormation element for which a logical identity is needed.
Return type: str

parse_arn(arn, sep_if_token=None, has_name=None)¶

Given an ARN, parses it and returns components.

If the ARN is a concrete string, it will be parsed and validated. The separator (sep) will be set to ‘/’ if the 6th component includes a ‘/’, in which case, resource will be set to the value before the ‘/’ and resourceName will be the rest. In case there is no ‘/’, resource will be set to the 6th components and resourceName will be set to the rest of the string.

If the ARN includes tokens (or is a token), the ARN cannot be validated, since we don’t have the actual value yet at the time of this function call. You will have to know the separator and the type of ARN. The resulting ArnComponents object will contain tokens for the subexpressions of the ARN, not string literals. In this case this function cannot properly parse the complete final resourceName (path) out of ARNs that use ‘/’ to both separate the ‘resource’ from the ‘resourceName’ AND to subdivide the resourceName further. For example, in S3 ARNs:

arn:aws:s3:::my_corporate_bucket/path/to/exampleobject.png

After parsing the resourceName will not contain ‘path/to/exampleobject.png’ but simply ‘path’. This is a limitation because there is no slicing functionality in CloudFormation templates.

Parameters

arn (str) – The ARN string to parse.
sep_if_token (Optional[str]) – The separator used to separate resource from resourceName.
has_name (Optional[bool]) – Whether there is a name component in the ARN at all. For example, SNS Topics ARNs have the ‘resource’ component contain the topic name, and no ‘resourceName’ component.

return :rtype: ArnComponents :return:

an ArnComponents object which allows access to the various components of the ARN.

rename_logical_id(old_id, new_id)¶

Rename a generated logical identities.

To modify the naming scheme strategy, extend the Stack class and override the createNamingScheme method.

Parameters

old_id (str) –
new_id (str) –

Return type

None

report_missing_context(*, key, props, provider)¶

Indicate that a context key was expected.

Contains instructions which will be emitted into the cloud assembly on how the key should be supplied.

Parameters

report – The set of parameters needed to obtain the context.
key (str) – The missing context key.
props (Mapping[str, Any]) – A set of provider-specific options.
provider (str) – The provider from which we expect this context key to be obtained.

Return type

None

resolve(obj)¶

Resolve a tokenized value in the context of the current stack.

Parameters

obj (Any) –

Return type

Any

to_json_string(obj, space=None)¶

Convert an object, potentially containing tokens, to a JSON string.

Parameters

obj (Any) –
space (Union[int, float, None]) –

Return type

str

to_string()¶

Returns a string representation of this construct.

Return type: str

Attributes

account¶

The AWS account into which this stack will be deployed.

This value is resolved according to the following rules:

The value provided to env.account when the stack is defined. This can either be a concerete account (e.g. 585695031111) or the Aws.accountId token.

Aws.accountId, which represents the CloudFormation intrinsic reference { "Ref": "AWS::AccountId" } encoded as a string token.

Preferably, you should use the return value as an opaque string and not attempt to parse it to implement your logic. If you do, you must first check that it is a concerete value an not an unresolved token. If this value is an unresolved token (Token.isUnresolved(stack.account) returns true), this implies that the user wishes that this stack will synthesize into a account-agnostic template. In this case, your code should either fail (throw an error, emit a synth error using node.addError) or implement some other region-agnostic behavior.

Return type: str

availability_zones¶

Returnst the list of AZs that are availability in the AWS environment (account/region) associated with this stack.

If the stack is environment-agnostic (either account and/or region are tokens), this property will return an array with 2 tokens that will resolve at deploy-time to the first two availability zones returned from CloudFormation’s Fn::GetAZs intrinsic function.

If they are not available in the context, returns a set of dummy values and reports them as missing, and let the CLI resolve them by calling EC2 DescribeAvailabilityZones on the target environment.

Return type: List[str]

dependencies¶

Return the stacks this stack depends on.

Return type: List[Stack]

environment¶

The environment coordinates in which this stack is deployed.

In the form aws://account/region. Use stack.account and stack.region to obtain the specific values, no need to parse.

You can use this value to determine if two stacks are targeting the same environment.

If either stack.account or stack.region are not concrete values (e.g. Aws.account or Aws.region) the special strings unknown-account and/or unknown-region will be used respectively to indicate this stack is region/account-agnostic.

Return type: str

node¶

Construct tree node which offers APIs for interacting with the construct tree.

Return type: ConstructNode

notification_arns¶

Returns the list of notification Amazon Resource Names (ARNs) for the current stack.

Return type: List[str]

partition¶

The partition in which this stack is defined.

Return type: str

region¶

The AWS region into which this stack will be deployed (e.g. us-west-2).

This value is resolved according to the following rules:

The value provided to env.region when the stack is defined. This can either be a concerete region (e.g. us-west-2) or the Aws.region token.

Aws.region, which is represents the CloudFormation intrinsic reference { "Ref": "AWS::Region" } encoded as a string token.

Preferably, you should use the return value as an opaque string and not attempt to parse it to implement your logic. If you do, you must first check that it is a concerete value an not an unresolved token. If this value is an unresolved token (Token.isUnresolved(stack.region) returns true), this implies that the user wishes that this stack will synthesize into a region-agnostic template. In this case, your code should either fail (throw an error, emit a synth error using node.addError) or implement some other region-agnostic behavior.

Return type: str

stack_id¶

The ID of the stack.

Example::: After resolving, looks like arn:aws:cloudformation:us-west-2:123456789012:stack/teststack/51af3dc0-da77-11e4-872e-1234567db123

Return type: str

stack_name¶

The concrete CloudFormation physical stack name.

This is either the name defined explicitly in the stackName prop or allocated based on the stack’s location in the construct tree. Stacks that are directly defined under the app use their construct id as their stack name. Stacks that are defined deeper within the tree will use a hashed naming scheme based on the construct path to ensure uniqueness.

If you wish to obtain the deploy-time AWS::StackName intrinsic, you can use Aws.stackName directly.

Return type: str

tags¶

Tags to be applied to the stack.

Return type: TagManager

template_options¶

Options for CloudFormation template (like version, transform, description).

Return type: ITemplateOptions

url_suffix¶

The Amazon domain suffix for the region in which this stack is defined.

Return type: str

Static Methods

classmethod is_construct(x)¶

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool

classmethod is_stack(x)¶

Return whether the given object is a Stack.

We do attribute detection since we can’t reliably use ‘instanceof’.

Parameters

x (Any) –

Return type

bool

classmethod of(construct)¶

Looks up the first stack scope in which construct is defined.

Fails if there is no stack up the tree.

Parameters: construct (IConstruct) – The construct to start the search from.
Return type: Stack