import { IGrantable } from 'aws-cdk-lib/aws-iam';
import { Construct } from 'constructs';
export interface IndexProps {
    /**
      * The name of the vector bucket to create the vector index in.
      */
    readonly vectorBucketName: string;
    /**
      * The name of the vector index to create.
      */
    readonly indexName: string;
    /**
      * The data type of the vectors in the index. Must be 'float32'
      */
    readonly dataType: 'float32';
    /**
      * The dimensions of the vectors to be inserted into the vector index.
      */
    readonly dimension: number;
    /**
      * The distance metric to be used for similarity search.
      */
    readonly distanceMetric: 'euclidean' | 'cosine';
    /**
      * The metadata configuration for the vector index.
      */
    readonly metadataConfiguration?: MetadataConfiguration;
}
export interface MetadataConfiguration {
    /**
      * Non-filterable metadata keys allow you to enrich vectors with additional context during storage and retrieval.
      * Unlike default metadata keys, these keys can't be used as query filters.
      *
      * Non-filterable metadata keys can be retrieved but can't be searched, queried, or filtered.
      * You can access non-filterable metadata keys of your vectors after finding the vectors.
      * For more information about non-filterable metadata keys, see
      * [Vectors](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-vectors-vectors.html) and
      * [Limitations and restrictions](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-vectors-limitations.html)
      * in the *Amazon S3 User Guide*.
      */
    readonly nonFilterableMetadataKeys: string[];
}
/**
 * Amazon S3 Vectors is in preview release for Amazon S3 and is subject to change.
 *
 * Creates a vector index within a vector bucket.
 * To specify the vector bucket, you must use either the vector bucket name or the vector bucket ARN (Amazon Resource Name).
 */
export declare class Index extends Construct {
    /**
      * The ARN (Amazon Resource Name) of the S3 Vector index.
      */
    readonly indexArn: string;
    /**
     * The name of the index.
     */
    readonly indexName: string;
    /**
      * @summary Creates a new Index construct for S3 Vectors.
      * @param {cdk.App} scope - Represents the scope for all resources.
      * @param {string} id - Scope-unique id.
      * @param {IndexProps} props - User provided props for the construct.
      * @access public
      */
    constructor(scope: Construct, id: string, props: IndexProps);
    /**
      * Grants write permissions (add/delete vectors) to the index.
      * @param grantee The principal to grant permissions to.
      */
    grantWrite(grantee: IGrantable): void;
}