import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { DescribeCacheInput, DescribeCacheOutput } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
/**
 * @public
 *
 * The input for {@link DescribeCacheCommand}.
 */
export interface DescribeCacheCommandInput extends DescribeCacheInput {
}
/**
 * @public
 *
 * The output of {@link DescribeCacheCommand}.
 */
export interface DescribeCacheCommandOutput extends DescribeCacheOutput, __MetadataBearer {
}
declare const DescribeCacheCommand_base: {
    new (input: DescribeCacheCommandInput): import("@smithy/core/client").CommandImpl<DescribeCacheCommandInput, DescribeCacheCommandOutput, import("..").StorageGatewayClientResolvedConfig, import("..").ServiceInputTypes, import("..").ServiceOutputTypes>;
    new (input: DescribeCacheCommandInput): import("@smithy/core/client").CommandImpl<DescribeCacheCommandInput, DescribeCacheCommandOutput, import("..").StorageGatewayClientResolvedConfig, import("..").ServiceInputTypes, import("..").ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/types").EndpointParameterInstructions;
};
/**
 * <p>Returns information about the cache of a gateway. This operation is only supported in
 *          the cached volume, tape, and file gateway types.</p>
 *          <p>The response includes disk IDs that are configured as cache, and it includes the amount
 *          of cache allocated and used.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { StorageGatewayClient, DescribeCacheCommand } from "@aws-sdk/client-storage-gateway"; // ES Modules import
 * // const { StorageGatewayClient, DescribeCacheCommand } = require("@aws-sdk/client-storage-gateway"); // CommonJS import
 * // import type { StorageGatewayClientConfig } from "@aws-sdk/client-storage-gateway";
 * const config = {}; // type is StorageGatewayClientConfig
 * const client = new StorageGatewayClient(config);
 * const input = { // DescribeCacheInput
 *   GatewayARN: "STRING_VALUE", // required
 * };
 * const command = new DescribeCacheCommand(input);
 * const response = await client.send(command);
 * // { // DescribeCacheOutput
 * //   GatewayARN: "STRING_VALUE",
 * //   DiskIds: [ // DiskIds
 * //     "STRING_VALUE",
 * //   ],
 * //   CacheAllocatedInBytes: Number("long"),
 * //   CacheUsedPercentage: Number("double"),
 * //   CacheDirtyPercentage: Number("double"),
 * //   CacheHitPercentage: Number("double"),
 * //   CacheMissPercentage: Number("double"),
 * // };
 *
 * ```
 *
 * @param DescribeCacheCommandInput - {@link DescribeCacheCommandInput}
 * @returns {@link DescribeCacheCommandOutput}
 * @see {@link DescribeCacheCommandInput} for command's `input` shape.
 * @see {@link DescribeCacheCommandOutput} for command's `response` shape.
 * @see {@link StorageGatewayClientResolvedConfig | config} for StorageGatewayClient's `config` shape.
 *
 * @throws {@link InternalServerError} (server fault)
 *  <p>An internal server error has occurred during the request. For more information, see the
 *          error and message fields.</p>
 *
 * @throws {@link InvalidGatewayRequestException} (client fault)
 *  <p>An exception occurred because an invalid gateway request was issued to the service. For
 *          more information, see the error and message fields.</p>
 *
 * @throws {@link StorageGatewayServiceException}
 * <p>Base exception class for all service exceptions from StorageGateway service.</p>
 *
 *
 * @example To describe cache information
 * ```javascript
 * // Returns information about the cache of a gateway.
 * const input = {
 *   GatewayARN: "arn:aws:storagegateway:us-east-1:111122223333:gateway/sgw-12A3456B"
 * };
 * const command = new DescribeCacheCommand(input);
 * const response = await client.send(command);
 * /* response is
 * {
 *   CacheAllocatedInBytes: 2199023255552,
 *   CacheDirtyPercentage: 0.07,
 *   CacheHitPercentage: 99.68,
 *   CacheMissPercentage: 0.32,
 *   CacheUsedPercentage: 0.07,
 *   DiskIds: [
 *     "pci-0000:03:00.0-scsi-0:0:0:0",
 *     "pci-0000:04:00.0-scsi-0:1:0:0"
 *   ],
 *   GatewayARN: "arn:aws:storagegateway:us-east-1:111122223333:gateway/sgw-12A3456B"
 * }
 * *\/
 * ```
 *
 * @public
 */
export declare class DescribeCacheCommand extends DescribeCacheCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DescribeCacheInput;
            output: DescribeCacheOutput;
        };
        sdk: {
            input: DescribeCacheCommandInput;
            output: DescribeCacheCommandOutput;
        };
    };
}