import { Command as $Command } from "@smithy/core/client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { DescribeActivityInput, DescribeActivityOutput } from "../models/models_0";
import type { ServiceInputTypes, ServiceOutputTypes, SFNClientResolvedConfig } from "../SFNClient";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link DescribeActivityCommand}.
 */
export interface DescribeActivityCommandInput extends DescribeActivityInput {
}
/**
 * @public
 *
 * The output of {@link DescribeActivityCommand}.
 */
export interface DescribeActivityCommandOutput extends DescribeActivityOutput, __MetadataBearer {
}
declare const DescribeActivityCommand_base: {
    new (input: DescribeActivityCommandInput): import("@smithy/core/client").CommandImpl<DescribeActivityCommandInput, DescribeActivityCommandOutput, SFNClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: DescribeActivityCommandInput): import("@smithy/core/client").CommandImpl<DescribeActivityCommandInput, DescribeActivityCommandOutput, SFNClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): {
        [x: string]: unknown;
    };
};
/**
 * <p>Describes an activity.</p>
 *          <note>
 *             <p>This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.</p>
 *          </note>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { SFNClient, DescribeActivityCommand } from "@aws-sdk/client-sfn"; // ES Modules import
 * // const { SFNClient, DescribeActivityCommand } = require("@aws-sdk/client-sfn"); // CommonJS import
 * // import type { SFNClientConfig } from "@aws-sdk/client-sfn";
 * const config = {}; // type is SFNClientConfig
 * const client = new SFNClient(config);
 * const input = { // DescribeActivityInput
 *   activityArn: "STRING_VALUE", // required
 * };
 * const command = new DescribeActivityCommand(input);
 * const response = await client.send(command);
 * // { // DescribeActivityOutput
 * //   activityArn: "STRING_VALUE", // required
 * //   name: "STRING_VALUE", // required
 * //   creationDate: new Date("TIMESTAMP"), // required
 * //   encryptionConfiguration: { // EncryptionConfiguration
 * //     kmsKeyId: "STRING_VALUE",
 * //     kmsDataKeyReusePeriodSeconds: Number("int"),
 * //     type: "AWS_OWNED_KEY" || "CUSTOMER_MANAGED_KMS_KEY", // required
 * //   },
 * // };
 *
 * ```
 *
 * @param DescribeActivityCommandInput - {@link DescribeActivityCommandInput}
 * @returns {@link DescribeActivityCommandOutput}
 * @see {@link DescribeActivityCommandInput} for command's `input` shape.
 * @see {@link DescribeActivityCommandOutput} for command's `response` shape.
 * @see {@link SFNClientResolvedConfig | config} for SFNClient's `config` shape.
 *
 * @throws {@link ActivityDoesNotExist} (client fault)
 *  <p>The specified activity does not exist.</p>
 *
 * @throws {@link InvalidArn} (client fault)
 *  <p>The provided Amazon Resource Name (ARN) is not valid.</p>
 *
 * @throws {@link SFNServiceException}
 * <p>Base exception class for all service exceptions from SFN service.</p>
 *
 *
 * @public
 */
export declare class DescribeActivityCommand extends DescribeActivityCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DescribeActivityInput;
            output: DescribeActivityOutput;
        };
        sdk: {
            input: DescribeActivityCommandInput;
            output: DescribeActivityCommandOutput;
        };
    };
}