import { Command as $Command } from "@smithy/smithy-client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { EventBridgeClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../EventBridgeClient";
import type { DescribeConnectionRequest, DescribeConnectionResponse } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link DescribeConnectionCommand}.
 */
export interface DescribeConnectionCommandInput extends DescribeConnectionRequest {
}
/**
 * @public
 *
 * The output of {@link DescribeConnectionCommand}.
 */
export interface DescribeConnectionCommandOutput extends DescribeConnectionResponse, __MetadataBearer {
}
declare const DescribeConnectionCommand_base: {
    new (input: DescribeConnectionCommandInput): import("@smithy/smithy-client").CommandImpl<DescribeConnectionCommandInput, DescribeConnectionCommandOutput, EventBridgeClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: DescribeConnectionCommandInput): import("@smithy/smithy-client").CommandImpl<DescribeConnectionCommandInput, DescribeConnectionCommandOutput, EventBridgeClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/middleware-endpoint").EndpointParameterInstructions;
};
/**
 * <p>Retrieves details about a connection.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { EventBridgeClient, DescribeConnectionCommand } from "@aws-sdk/client-eventbridge"; // ES Modules import
 * // const { EventBridgeClient, DescribeConnectionCommand } = require("@aws-sdk/client-eventbridge"); // CommonJS import
 * // import type { EventBridgeClientConfig } from "@aws-sdk/client-eventbridge";
 * const config = {}; // type is EventBridgeClientConfig
 * const client = new EventBridgeClient(config);
 * const input = { // DescribeConnectionRequest
 *   Name: "STRING_VALUE", // required
 * };
 * const command = new DescribeConnectionCommand(input);
 * const response = await client.send(command);
 * // { // DescribeConnectionResponse
 * //   ConnectionArn: "STRING_VALUE",
 * //   Name: "STRING_VALUE",
 * //   Description: "STRING_VALUE",
 * //   InvocationConnectivityParameters: { // DescribeConnectionConnectivityParameters
 * //     ResourceParameters: { // DescribeConnectionResourceParameters
 * //       ResourceConfigurationArn: "STRING_VALUE", // required
 * //       ResourceAssociationArn: "STRING_VALUE", // required
 * //     },
 * //   },
 * //   ConnectionState: "CREATING" || "UPDATING" || "DELETING" || "AUTHORIZED" || "DEAUTHORIZED" || "AUTHORIZING" || "DEAUTHORIZING" || "ACTIVE" || "FAILED_CONNECTIVITY",
 * //   StateReason: "STRING_VALUE",
 * //   AuthorizationType: "BASIC" || "OAUTH_CLIENT_CREDENTIALS" || "API_KEY",
 * //   SecretArn: "STRING_VALUE",
 * //   KmsKeyIdentifier: "STRING_VALUE",
 * //   AuthParameters: { // ConnectionAuthResponseParameters
 * //     BasicAuthParameters: { // ConnectionBasicAuthResponseParameters
 * //       Username: "STRING_VALUE",
 * //     },
 * //     OAuthParameters: { // ConnectionOAuthResponseParameters
 * //       ClientParameters: { // ConnectionOAuthClientResponseParameters
 * //         ClientID: "STRING_VALUE",
 * //       },
 * //       AuthorizationEndpoint: "STRING_VALUE",
 * //       HttpMethod: "GET" || "POST" || "PUT",
 * //       OAuthHttpParameters: { // ConnectionHttpParameters
 * //         HeaderParameters: [ // ConnectionHeaderParametersList
 * //           { // ConnectionHeaderParameter
 * //             Key: "STRING_VALUE",
 * //             Value: "STRING_VALUE",
 * //             IsValueSecret: true || false,
 * //           },
 * //         ],
 * //         QueryStringParameters: [ // ConnectionQueryStringParametersList
 * //           { // ConnectionQueryStringParameter
 * //             Key: "STRING_VALUE",
 * //             Value: "STRING_VALUE",
 * //             IsValueSecret: true || false,
 * //           },
 * //         ],
 * //         BodyParameters: [ // ConnectionBodyParametersList
 * //           { // ConnectionBodyParameter
 * //             Key: "STRING_VALUE",
 * //             Value: "STRING_VALUE",
 * //             IsValueSecret: true || false,
 * //           },
 * //         ],
 * //       },
 * //     },
 * //     ApiKeyAuthParameters: { // ConnectionApiKeyAuthResponseParameters
 * //       ApiKeyName: "STRING_VALUE",
 * //     },
 * //     InvocationHttpParameters: {
 * //       HeaderParameters: [
 * //         {
 * //           Key: "STRING_VALUE",
 * //           Value: "STRING_VALUE",
 * //           IsValueSecret: true || false,
 * //         },
 * //       ],
 * //       QueryStringParameters: [
 * //         {
 * //           Key: "STRING_VALUE",
 * //           Value: "STRING_VALUE",
 * //           IsValueSecret: true || false,
 * //         },
 * //       ],
 * //       BodyParameters: [
 * //         {
 * //           Key: "STRING_VALUE",
 * //           Value: "STRING_VALUE",
 * //           IsValueSecret: true || false,
 * //         },
 * //       ],
 * //     },
 * //     ConnectivityParameters: {
 * //       ResourceParameters: {
 * //         ResourceConfigurationArn: "STRING_VALUE", // required
 * //         ResourceAssociationArn: "STRING_VALUE", // required
 * //       },
 * //     },
 * //   },
 * //   CreationTime: new Date("TIMESTAMP"),
 * //   LastModifiedTime: new Date("TIMESTAMP"),
 * //   LastAuthorizedTime: new Date("TIMESTAMP"),
 * // };
 *
 * ```
 *
 * @param DescribeConnectionCommandInput - {@link DescribeConnectionCommandInput}
 * @returns {@link DescribeConnectionCommandOutput}
 * @see {@link DescribeConnectionCommandInput} for command's `input` shape.
 * @see {@link DescribeConnectionCommandOutput} for command's `response` shape.
 * @see {@link EventBridgeClientResolvedConfig | config} for EventBridgeClient's `config` shape.
 *
 * @throws {@link InternalException} (server fault)
 *  <p>This exception occurs due to unexpected causes.</p>
 *
 * @throws {@link ResourceNotFoundException} (client fault)
 *  <p>An entity that you specified does not exist.</p>
 *
 * @throws {@link EventBridgeServiceException}
 * <p>Base exception class for all service exceptions from EventBridge service.</p>
 *
 *
 * @public
 */
export declare class DescribeConnectionCommand extends DescribeConnectionCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DescribeConnectionRequest;
            output: DescribeConnectionResponse;
        };
        sdk: {
            input: DescribeConnectionCommandInput;
            output: DescribeConnectionCommandOutput;
        };
    };
}