import { EndpointParameterInstructions } from "@smithy/middleware-endpoint";
import { Command as $Command } from "@smithy/smithy-client";
import { Handler, HttpHandlerOptions as __HttpHandlerOptions, MetadataBearer as __MetadataBearer, MiddlewareStack } from "@smithy/types";
import { HeadObjectOutput, HeadObjectRequest } from "../models/models_0";
import { S3ClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../S3Client";
/**
 * @public
 */
export { __MetadataBearer, $Command };
/**
 * @public
 *
 * The input for {@link HeadObjectCommand}.
 */
export interface HeadObjectCommandInput extends HeadObjectRequest {
}
/**
 * @public
 *
 * The output of {@link HeadObjectCommand}.
 */
export interface HeadObjectCommandOutput extends HeadObjectOutput, __MetadataBearer {
}
/**
 * @public
 * <p>The <code>HEAD</code> action retrieves metadata from an object without returning the object itself.
 *          This action is useful if you're only interested in an object's metadata. To use <code>HEAD</code>, you
 *          must have READ access to the object.</p>
 *          <p>A <code>HEAD</code> request has the same options as a <code>GET</code> action on an
 *          object. The response is identical to the <code>GET</code> response except that there is no
 *          response body. Because of this, if the <code>HEAD</code> request generates an error, it
 *          returns a generic <code>400 Bad Request</code>, <code>403 Forbidden</code> or <code>404 Not
 *             Found</code> code. It is not possible to retrieve the exact exception beyond these error
 *          codes.</p>
 *          <p>If you encrypt an object by using server-side encryption with customer-provided
 *          encryption keys (SSE-C) when you store the object in Amazon S3, then when you retrieve the
 *          metadata from the object, you must use the following headers:</p>
 *          <ul>
 *             <li>
 *                <p>
 *                   <code>x-amz-server-side-encryption-customer-algorithm</code>
 *                </p>
 *             </li>
 *             <li>
 *                <p>
 *                   <code>x-amz-server-side-encryption-customer-key</code>
 *                </p>
 *             </li>
 *             <li>
 *                <p>
 *                   <code>x-amz-server-side-encryption-customer-key-MD5</code>
 *                </p>
 *             </li>
 *          </ul>
 *          <p>For more information about SSE-C, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html">Server-Side Encryption
 *             (Using Customer-Provided Encryption Keys)</a>.</p>
 *          <note>
 *             <ul>
 *                <li>
 *                   <p>Encryption request headers, like <code>x-amz-server-side-encryption</code>,
 *                   should not be sent for <code>GET</code> requests if your object uses server-side
 *                   encryption with Key Management Service (KMS) keys (SSE-KMS), dual-layer server-side
 *                   encryption with Amazon Web Services KMS keys (DSSE-KMS), or server-side encryption with Amazon S3
 *                   managed encryption keys (SSE-S3). If your object does use these types of keys,
 *                   you’ll get an HTTP 400 Bad Request error.</p>
 *                </li>
 *                <li>
 *                   <p> The last modified property in this case is the creation date of the
 *                   object.</p>
 *                </li>
 *             </ul>
 *          </note>
 *          <p>Request headers are limited to 8 KB in size. For more information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/RESTCommonRequestHeaders.html">Common
 *             Request Headers</a>.</p>
 *          <p>Consider the following when using request headers:</p>
 *          <ul>
 *             <li>
 *                <p> Consideration 1 – If both of the <code>If-Match</code> and
 *                   <code>If-Unmodified-Since</code> headers are present in the request as
 *                follows:</p>
 *                <ul>
 *                   <li>
 *                      <p>
 *                         <code>If-Match</code> condition evaluates to <code>true</code>, and;</p>
 *                   </li>
 *                   <li>
 *                      <p>
 *                         <code>If-Unmodified-Since</code> condition evaluates to
 *                      <code>false</code>;</p>
 *                   </li>
 *                </ul>
 *                <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
 *             </li>
 *             <li>
 *                <p> Consideration 2 – If both of the <code>If-None-Match</code> and
 *                   <code>If-Modified-Since</code> headers are present in the request as
 *                follows:</p>
 *                <ul>
 *                   <li>
 *                      <p>
 *                         <code>If-None-Match</code> condition evaluates to <code>false</code>,
 *                      and;</p>
 *                   </li>
 *                   <li>
 *                      <p>
 *                         <code>If-Modified-Since</code> condition evaluates to
 *                      <code>true</code>;</p>
 *                   </li>
 *                </ul>
 *                <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
 *             </li>
 *          </ul>
 *          <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
 *          <dl>
 *             <dt>Permissions</dt>
 *             <dd>
 *                <p>You need the relevant read object (or version) permission for this operation. For more
 *                   information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/list_amazons3.html">Actions, resources, and condition keys for Amazon S3</a>.
 *                   If the object you request doesn't exist, the error that Amazon S3 returns depends
 *                   on whether you also have the s3:ListBucket permission.</p>
 *                <ul>
 *                   <li>
 *                      <p>If you have the <code>s3:ListBucket</code> permission on the bucket, Amazon S3 returns
 *                         an HTTP status code 404 error.</p>
 *                   </li>
 *                   <li>
 *                      <p>If you don’t have the <code>s3:ListBucket</code> permission, Amazon S3 returns an HTTP
 *                         status code 403 error.</p>
 *                   </li>
 *                </ul>
 *             </dd>
 *          </dl>
 *          <p>The following actions are related to <code>HeadObject</code>:</p>
 *          <ul>
 *             <li>
 *                <p>
 *                   <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObject.html">GetObject</a>
 *                </p>
 *             </li>
 *             <li>
 *                <p>
 *                   <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAttributes.html">GetObjectAttributes</a>
 *                </p>
 *             </li>
 *          </ul>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { S3Client, HeadObjectCommand } from "@aws-sdk/client-s3"; // ES Modules import
 * // const { S3Client, HeadObjectCommand } = require("@aws-sdk/client-s3"); // CommonJS import
 * const client = new S3Client(config);
 * const input = { // HeadObjectRequest
 *   Bucket: "STRING_VALUE", // required
 *   IfMatch: "STRING_VALUE",
 *   IfModifiedSince: new Date("TIMESTAMP"),
 *   IfNoneMatch: "STRING_VALUE",
 *   IfUnmodifiedSince: new Date("TIMESTAMP"),
 *   Key: "STRING_VALUE", // required
 *   Range: "STRING_VALUE",
 *   VersionId: "STRING_VALUE",
 *   SSECustomerAlgorithm: "STRING_VALUE",
 *   SSECustomerKey: "STRING_VALUE",
 *   SSECustomerKeyMD5: "STRING_VALUE",
 *   RequestPayer: "requester",
 *   PartNumber: Number("int"),
 *   ExpectedBucketOwner: "STRING_VALUE",
 *   ChecksumMode: "ENABLED",
 * };
 * const command = new HeadObjectCommand(input);
 * const response = await client.send(command);
 * // { // HeadObjectOutput
 * //   DeleteMarker: true || false,
 * //   AcceptRanges: "STRING_VALUE",
 * //   Expiration: "STRING_VALUE",
 * //   Restore: "STRING_VALUE",
 * //   ArchiveStatus: "ARCHIVE_ACCESS" || "DEEP_ARCHIVE_ACCESS",
 * //   LastModified: new Date("TIMESTAMP"),
 * //   ContentLength: Number("long"),
 * //   ChecksumCRC32: "STRING_VALUE",
 * //   ChecksumCRC32C: "STRING_VALUE",
 * //   ChecksumSHA1: "STRING_VALUE",
 * //   ChecksumSHA256: "STRING_VALUE",
 * //   ETag: "STRING_VALUE",
 * //   MissingMeta: Number("int"),
 * //   VersionId: "STRING_VALUE",
 * //   CacheControl: "STRING_VALUE",
 * //   ContentDisposition: "STRING_VALUE",
 * //   ContentEncoding: "STRING_VALUE",
 * //   ContentLanguage: "STRING_VALUE",
 * //   ContentType: "STRING_VALUE",
 * //   Expires: new Date("TIMESTAMP"),
 * //   WebsiteRedirectLocation: "STRING_VALUE",
 * //   ServerSideEncryption: "AES256" || "aws:kms" || "aws:kms:dsse",
 * //   Metadata: { // Metadata
 * //     "<keys>": "STRING_VALUE",
 * //   },
 * //   SSECustomerAlgorithm: "STRING_VALUE",
 * //   SSECustomerKeyMD5: "STRING_VALUE",
 * //   SSEKMSKeyId: "STRING_VALUE",
 * //   BucketKeyEnabled: true || false,
 * //   StorageClass: "STANDARD" || "REDUCED_REDUNDANCY" || "STANDARD_IA" || "ONEZONE_IA" || "INTELLIGENT_TIERING" || "GLACIER" || "DEEP_ARCHIVE" || "OUTPOSTS" || "GLACIER_IR" || "SNOW",
 * //   RequestCharged: "requester",
 * //   ReplicationStatus: "COMPLETE" || "PENDING" || "FAILED" || "REPLICA",
 * //   PartsCount: Number("int"),
 * //   ObjectLockMode: "GOVERNANCE" || "COMPLIANCE",
 * //   ObjectLockRetainUntilDate: new Date("TIMESTAMP"),
 * //   ObjectLockLegalHoldStatus: "ON" || "OFF",
 * // };
 *
 * ```
 *
 * @param HeadObjectCommandInput - {@link HeadObjectCommandInput}
 * @returns {@link HeadObjectCommandOutput}
 * @see {@link HeadObjectCommandInput} for command's `input` shape.
 * @see {@link HeadObjectCommandOutput} for command's `response` shape.
 * @see {@link S3ClientResolvedConfig | config} for S3Client's `config` shape.
 *
 * @throws {@link NotFound} (client fault)
 *  <p>The specified content does not exist.</p>
 *
 * @throws {@link S3ServiceException}
 * <p>Base exception class for all service exceptions from S3 service.</p>
 *
 * @example To retrieve metadata of an object without returning the object itself
 * ```javascript
 * // The following example retrieves an object metadata.
 * const input = {
 *   "Bucket": "examplebucket",
 *   "Key": "HappyFace.jpg"
 * };
 * const command = new HeadObjectCommand(input);
 * const response = await client.send(command);
 * /* response ==
 * {
 *   "AcceptRanges": "bytes",
 *   "ContentLength": "3191",
 *   "ContentType": "image/jpeg",
 *   "ETag": "\"6805f2cfc46c0f04559748bb039d69ae\"",
 *   "LastModified": "Thu, 15 Dec 2016 01:19:41 GMT",
 *   "Metadata": {},
 *   "VersionId": "null"
 * }
 * *\/
 * // example id: to-retrieve-metadata-of-an-object-without-returning-the-object-itself-1481834820480
 * ```
 *
 */
export declare class HeadObjectCommand extends $Command<HeadObjectCommandInput, HeadObjectCommandOutput, S3ClientResolvedConfig> {
    readonly input: HeadObjectCommandInput;
    static getEndpointParameterInstructions(): EndpointParameterInstructions;
    /**
     * @public
     */
    constructor(input: HeadObjectCommandInput);
    /**
     * @internal
     */
    resolveMiddleware(clientStack: MiddlewareStack<ServiceInputTypes, ServiceOutputTypes>, configuration: S3ClientResolvedConfig, options?: __HttpHandlerOptions): Handler<HeadObjectCommandInput, HeadObjectCommandOutput>;
    /**
     * @internal
     */
    private serialize;
    /**
     * @internal
     */
    private deserialize;
}
