Class Arn

Inheritance

Arn

Namespace: Amazon.CDK

Assembly: Amazon.CDK.Lib.dll

Syntax (csharp)

public class Arn : DeputyBase

Syntax (vb)

Public Class Arn Inherits DeputyBase

Synopsis

Methods

ExtractResourceName(string, string)	Extract the full resource name from an ARN.
Format(IArnComponents, Stack?)	Creates an ARN from components.
Split(string, ArnFormat)	Splits the provided ARN into its components.

Methods

ExtractResourceName(string, string)

Extract the full resource name from an ARN.

public static string ExtractResourceName(string arn, string resourceType)

Parameters

arn string
resourceType string

Returns

string

Remarks

Necessary for resource names (paths) that may contain the separator, like arn:aws:iam::111111111111:role/path/to/role/name.

Only works if we statically know the expected resourceType beforehand, since we're going to use that to split the string on ':<resourceType>/' (and take the right-hand side).

We can't extract the 'resourceType' from the ARN at hand, because CloudFormation Expressions only allow literals in the 'separator' argument to { Fn::Split }, and so it can't be { Fn::Select: [5, { Fn::Split: [':', ARN] }}.

Only necessary for ARN formats for which the type-name separator is /.

Format(IArnComponents, Stack?)

Creates an ARN from components.

public static string Format(IArnComponents components, Stack? stack = null)

Parameters

components IArnComponents
stack Stack

Returns

string

Remarks

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'.

Split(string, ArnFormat)

Splits the provided ARN into its components.

public static IArnComponents Split(string arn, ArnFormat arnFormat)

Parameters

arn string: the ARN to split into its components.
arnFormat ArnFormat: the expected format of 'arn' - depends on what format the service 'arn' represents uses.

Returns

IArnComponents

Remarks

Works both if 'arn' is a string like 'arn:aws:s3:::bucket', and a Token representing a dynamic CloudFormation expression (in which case the returned components will also be dynamic CloudFormation expressions, encoded as Tokens).