# StreamConsumer

A Kinesis Stream Consumer.

Extends: Construct › Resource › StreamConsumer
Implements: IResource, IStreamConsumer, IEnvironmentAware, IStreamConsumerRef, IConstruct, IDependable

- CloudFormation: [`AWS::Kinesis::StreamConsumer`](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-kinesis-streamconsumer.html)
- L1 type: [`CfnStreamConsumer`](/cdk/api/v2/docs/aws-cdk-lib.aws_kinesis.CfnStreamConsumer.html)
- Source: [`aws-kinesis/lib/stream-consumer.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-kinesis/lib/stream-consumer.ts#L173)
- Type last changed: v2.234.0 · 8 Jan 2026

## Example

```ts
const lambdaRole = new iam.Role(this, 'Role', {
  assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'),
  description: 'Example role...',
});

const stream = new kinesis.Stream(this, 'MyEncryptedStream', {
  encryption: kinesis.StreamEncryption.KMS,
});
const streamConsumer = new kinesis.StreamConsumer(this, 'MyStreamConsumer', {
  streamConsumerName: 'MyStreamConsumer',
  stream,
});

// give lambda permissions to read stream via the stream consumer
streamConsumer.grantRead(lambdaRole);
```

## Initializer

```ts
new StreamConsumer(scope: Construct, id: string, props: StreamConsumerProps)
```

## Construct Props

- `stream`: [IStream](/cdk/api/v2/docs/aws-cdk-lib.aws_kinesis.IStream.html) (required) — The Kinesis data stream to associate this consumer with.

- `streamConsumerName`: string (required) — The name of the stream consumer.

## Properties

- `env`: [ResourceEnvironment](/cdk/api/v2/docs/aws-cdk-lib.interfaces.ResourceEnvironment.html) — The environment this resource belongs to.

  For resources that are created and managed in a Stack (those created by
  creating new class instances like `new Role()`, `new Bucket()`, etc.), this
  is always the same as the environment of the stack they belong to.

  For referenced resources (those obtained from referencing methods like
  `Role.fromRoleArn()`, `Bucket.fromBucketName()`, etc.), they might be
  different than the stack they were imported into.

- `node`: [Node](/cdk/api/v2/docs/constructs.Node.html) — The tree node.

- `PROPERTY_INJECTION_ID`: string (static) — Uniquely identifies this class.

- `stack`: [Stack](/cdk/api/v2/docs/aws-cdk-lib.Stack.html) — The stack in which this resource is defined.

- `stream`: [IStream](/cdk/api/v2/docs/aws-cdk-lib.aws_kinesis.IStream.html) — The Kinesis data stream this consumer is associated with.

- `streamConsumerArn`: string — The Amazon Resource Name (ARN) of the stream consumer.

- `streamConsumerName`: string — The name of the stream consumer.

- `streamConsumerRef`: [StreamConsumerReference](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_kinesis.StreamConsumerReference.html) — A reference to this stream consumer.

## Methods

- `addToResourcePolicy(statement: PolicyStatement): AddToResourcePolicyResult` — Adds a statement to the IAM resource policy associated with this stream consumer.

  If this stream consumer was created in this stack (`new StreamConsumer`), a resource policy
  will be automatically created upon the first call to `addToResourcePolicy`. If
  the stream is imported (`StreamConsumer.from`), then this is a no-op.

- `applyCrossStackReferenceStrength(strength: ReferenceStrength): void` — Override the cross-stack reference strength for this resource.

  When set, any cross-stack reference to this resource will use the specified
  mechanism instead of the global default determined by the
  `@aws-cdk/core:defaultCrossStackReferences` context key. This is useful for
  selectively weakening specific references to avoid the "deadly embrace" problem
  without changing the app-wide default.

  **Parameters**

  - `strength` — - The reference strength to use for this resource.

- `applyRemovalPolicy(policy: RemovalPolicy): void` — Apply the given removal policy to this resource.

  The Removal Policy controls what happens to this resource when it stops
  being managed by CloudFormation, either because you've removed it from the
  CDK application or because you've made a change that requires the resource
  to be replaced.

  The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
  account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).

- `fromStreamConsumerArn(scope: Construct, id: string, streamConsumerArn: string): IStreamConsumer` (static) — Imports an existing Kinesis Stream Consumer by its arn.

  **Parameters**

  - `scope` — the Construct scope.
  - `id` — the ID of the construct.
  - `streamConsumerArn` — the arn of the existing stream consumer.

- `fromStreamConsumerAttributes(scope: Construct, id: string, attrs: StreamConsumerAttributes): IStreamConsumer` (static) — Imports an existing Kinesis Stream Consumer by its attributes.

  **Parameters**

  - `scope` — the Construct scope.
  - `id` — the ID of the construct.
  - `attrs` — the attributes of the existing stream consumer.

- `grant(grantee: IGrantable, ...actions: string[]): Grant` — Grant the indicated permissions on this stream consumer to the given IAM principal (Role/Group/User).

  [disable-awslint:no-grants]

- `grantRead(grantee: IGrantable): Grant` — Grant read permissions for this stream consumer and its associated stream to an IAM principal (Role/Group/User).

  [disable-awslint:no-grants]

- `isConstruct(x: any): boolean` (static) — Checks if `x` is a construct.

  Use this method instead of `instanceof` to properly detect `Construct`
  instances, even when the construct library is symlinked.

  Explanation: in JavaScript, multiple copies of the `constructs` library on
  disk are seen as independent, completely different libraries. As a
  consequence, the class `Construct` in each copy of the `constructs` library
  is seen as a different class, and an instance of one class will not test as
  `instanceof` the other class. `npm install` will not create installations
  like this, but users may manually symlink construct libraries together or
  use a monorepo tool: in those cases, multiple copies of the `constructs`
  library can be accidentally installed, and `instanceof` will behave
  unpredictably. It is safest to avoid using `instanceof`, and using
  this type-testing method instead.

  **Parameters**

  - `x` — Any object.

  **Returns:** true if `x` is an object created from a class which extends `Construct`.

- `isOwnedResource(construct: IConstruct): boolean` (static) — Returns true if the construct was created by CDK, and false otherwise.

- `isResource(construct: IConstruct): boolean` (static) — Check whether the given construct is a Resource.

- `toString(): string` — Returns a string representation of this construct.

- `with(...mixins: IMixin[]): IConstruct` — Applies one or more mixins to this construct.

  Mixins are applied in order. The list of constructs is captured at the
  start of the call, so constructs added by a mixin will not be visited.
  Use multiple `with()` calls if subsequent mixins should apply to added
  constructs.