import { Command as $Command } from "@smithy/core/client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { FailoverDBClusterMessage, FailoverDBClusterResult } from "../models/models_1";
import type { RDSClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RDSClient";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link FailoverDBClusterCommand}.
 */
export interface FailoverDBClusterCommandInput extends FailoverDBClusterMessage {
}
/**
 * @public
 *
 * The output of {@link FailoverDBClusterCommand}.
 */
export interface FailoverDBClusterCommandOutput extends FailoverDBClusterResult, __MetadataBearer {
}
declare const FailoverDBClusterCommand_base: {
    new (input: FailoverDBClusterCommandInput): import("@smithy/core/client").CommandImpl<FailoverDBClusterCommandInput, FailoverDBClusterCommandOutput, RDSClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: FailoverDBClusterCommandInput): import("@smithy/core/client").CommandImpl<FailoverDBClusterCommandInput, FailoverDBClusterCommandOutput, RDSClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): {
        [x: string]: unknown;
    };
};
/**
 * <p>Forces a failover for a DB cluster.</p> <p>For an Aurora DB cluster, failover for a DB cluster promotes one of the Aurora Replicas (read-only instances) in the DB cluster to be the primary DB instance (the cluster writer).</p> <p>For a Multi-AZ DB cluster, after RDS terminates the primary DB instance, the internal monitoring system detects that the primary DB instance is unhealthy and promotes a readable standby (read-only instances) in the DB cluster to be the primary DB instance (the cluster writer). Failover times are typically less than 35 seconds.</p> <p>An Amazon Aurora DB cluster automatically fails over to an Aurora Replica, if one exists, when the primary DB instance fails. A Multi-AZ DB cluster automatically fails over to a readable standby DB instance when the primary DB instance fails.</p> <p>To simulate a failure of a primary instance for testing, you can force a failover. Because each instance in a DB cluster has its own endpoint address, make sure to clean up and re-establish any existing connections that use those endpoint addresses when the failover is complete.</p> <p>For more information on Amazon Aurora DB clusters, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/CHAP_AuroraOverview.html"> What is Amazon Aurora?</a> in the <i>Amazon Aurora User Guide</i>.</p> <p>For more information on Multi-AZ DB clusters, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/multi-az-db-clusters-concepts.html"> Multi-AZ DB cluster deployments</a> in the <i>Amazon RDS User Guide</i>.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { RDSClient, FailoverDBClusterCommand } from "@aws-sdk/client-rds"; // ES Modules import
 * // const { RDSClient, FailoverDBClusterCommand } = require("@aws-sdk/client-rds"); // CommonJS import
 * // import type { RDSClientConfig } from "@aws-sdk/client-rds";
 * const config = {}; // type is RDSClientConfig
 * const client = new RDSClient(config);
 * const input = { // FailoverDBClusterMessage
 *   DBClusterIdentifier: "STRING_VALUE", // required
 *   TargetDBInstanceIdentifier: "STRING_VALUE",
 * };
 * const command = new FailoverDBClusterCommand(input);
 * const response = await client.send(command);
 * // { // FailoverDBClusterResult
 * //   DBCluster: { // DBCluster
 * //     AllocatedStorage: Number("int"),
 * //     AvailabilityZones: [ // AvailabilityZones
 * //       "STRING_VALUE",
 * //     ],
 * //     BackupRetentionPeriod: Number("int"),
 * //     CharacterSetName: "STRING_VALUE",
 * //     DatabaseName: "STRING_VALUE",
 * //     DBClusterIdentifier: "STRING_VALUE",
 * //     DBClusterParameterGroup: "STRING_VALUE",
 * //     DBSubnetGroup: "STRING_VALUE",
 * //     Status: "STRING_VALUE",
 * //     PercentProgress: "STRING_VALUE",
 * //     EarliestRestorableTime: new Date("TIMESTAMP"),
 * //     Endpoint: "STRING_VALUE",
 * //     ReaderEndpoint: "STRING_VALUE",
 * //     CustomEndpoints: [ // StringList
 * //       "STRING_VALUE",
 * //     ],
 * //     MultiAZ: true || false,
 * //     Engine: "STRING_VALUE",
 * //     EngineVersion: "STRING_VALUE",
 * //     LatestRestorableTime: new Date("TIMESTAMP"),
 * //     Port: Number("int"),
 * //     MasterUsername: "STRING_VALUE",
 * //     DBClusterOptionGroupMemberships: [ // DBClusterOptionGroupMemberships
 * //       { // DBClusterOptionGroupStatus
 * //         DBClusterOptionGroupName: "STRING_VALUE",
 * //         Status: "STRING_VALUE",
 * //       },
 * //     ],
 * //     PreferredBackupWindow: "STRING_VALUE",
 * //     PreferredMaintenanceWindow: "STRING_VALUE",
 * //     UpgradeRolloutOrder: "first" || "second" || "last",
 * //     ReplicationSourceIdentifier: "STRING_VALUE",
 * //     ReadReplicaIdentifiers: [ // ReadReplicaIdentifierList
 * //       "STRING_VALUE",
 * //     ],
 * //     StatusInfos: [ // DBClusterStatusInfoList
 * //       { // DBClusterStatusInfo
 * //         StatusType: "STRING_VALUE",
 * //         Normal: true || false,
 * //         Status: "STRING_VALUE",
 * //         Message: "STRING_VALUE",
 * //       },
 * //     ],
 * //     DBClusterMembers: [ // DBClusterMemberList
 * //       { // DBClusterMember
 * //         DBInstanceIdentifier: "STRING_VALUE",
 * //         IsClusterWriter: true || false,
 * //         DBClusterParameterGroupStatus: "STRING_VALUE",
 * //         PromotionTier: Number("int"),
 * //       },
 * //     ],
 * //     VpcSecurityGroups: [ // VpcSecurityGroupMembershipList
 * //       { // VpcSecurityGroupMembership
 * //         VpcSecurityGroupId: "STRING_VALUE",
 * //         Status: "STRING_VALUE",
 * //       },
 * //     ],
 * //     HostedZoneId: "STRING_VALUE",
 * //     StorageEncrypted: true || false,
 * //     StorageEncryptionType: "none" || "sse-kms" || "sse-rds",
 * //     KmsKeyId: "STRING_VALUE",
 * //     DbClusterResourceId: "STRING_VALUE",
 * //     DBClusterArn: "STRING_VALUE",
 * //     AssociatedRoles: [ // DBClusterRoles
 * //       { // DBClusterRole
 * //         RoleArn: "STRING_VALUE",
 * //         Status: "STRING_VALUE",
 * //         FeatureName: "STRING_VALUE",
 * //       },
 * //     ],
 * //     IAMDatabaseAuthenticationEnabled: true || false,
 * //     CloneGroupId: "STRING_VALUE",
 * //     ClusterCreateTime: new Date("TIMESTAMP"),
 * //     EarliestBacktrackTime: new Date("TIMESTAMP"),
 * //     BacktrackWindow: Number("long"),
 * //     BacktrackConsumedChangeRecords: Number("long"),
 * //     EnabledCloudwatchLogsExports: [ // LogTypeList
 * //       "STRING_VALUE",
 * //     ],
 * //     Capacity: Number("int"),
 * //     PendingModifiedValues: { // ClusterPendingModifiedValues
 * //       PendingCloudwatchLogsExports: { // PendingCloudwatchLogsExports
 * //         LogTypesToEnable: [
 * //           "STRING_VALUE",
 * //         ],
 * //         LogTypesToDisable: [
 * //           "STRING_VALUE",
 * //         ],
 * //       },
 * //       DBClusterIdentifier: "STRING_VALUE",
 * //       MasterUserPassword: "STRING_VALUE",
 * //       IAMDatabaseAuthenticationEnabled: true || false,
 * //       EngineVersion: "STRING_VALUE",
 * //       BackupRetentionPeriod: Number("int"),
 * //       StorageType: "STRING_VALUE",
 * //       AllocatedStorage: Number("int"),
 * //       RdsCustomClusterConfiguration: { // RdsCustomClusterConfiguration
 * //         InterconnectSubnetId: "STRING_VALUE",
 * //         TransitGatewayMulticastDomainId: "STRING_VALUE",
 * //         ReplicaMode: "open-read-only" || "mounted",
 * //       },
 * //       Iops: Number("int"),
 * //       CertificateDetails: { // CertificateDetails
 * //         CAIdentifier: "STRING_VALUE",
 * //         ValidTill: new Date("TIMESTAMP"),
 * //       },
 * //     },
 * //     EngineMode: "STRING_VALUE",
 * //     ScalingConfigurationInfo: { // ScalingConfigurationInfo
 * //       MinCapacity: Number("int"),
 * //       MaxCapacity: Number("int"),
 * //       AutoPause: true || false,
 * //       SecondsUntilAutoPause: Number("int"),
 * //       TimeoutAction: "STRING_VALUE",
 * //       SecondsBeforeTimeout: Number("int"),
 * //     },
 * //     RdsCustomClusterConfiguration: {
 * //       InterconnectSubnetId: "STRING_VALUE",
 * //       TransitGatewayMulticastDomainId: "STRING_VALUE",
 * //       ReplicaMode: "open-read-only" || "mounted",
 * //     },
 * //     DBClusterInstanceClass: "STRING_VALUE",
 * //     StorageType: "STRING_VALUE",
 * //     Iops: Number("int"),
 * //     StorageThroughput: Number("int"),
 * //     IOOptimizedNextAllowedModificationTime: new Date("TIMESTAMP"),
 * //     PubliclyAccessible: true || false,
 * //     AutoMinorVersionUpgrade: true || false,
 * //     DeletionProtection: true || false,
 * //     HttpEndpointEnabled: true || false,
 * //     ActivityStreamMode: "sync" || "async",
 * //     ActivityStreamStatus: "stopped" || "starting" || "started" || "stopping",
 * //     ActivityStreamKmsKeyId: "STRING_VALUE",
 * //     ActivityStreamKinesisStreamName: "STRING_VALUE",
 * //     CopyTagsToSnapshot: true || false,
 * //     CrossAccountClone: true || false,
 * //     DomainMemberships: [ // DomainMembershipList
 * //       { // DomainMembership
 * //         Domain: "STRING_VALUE",
 * //         Status: "STRING_VALUE",
 * //         FQDN: "STRING_VALUE",
 * //         IAMRoleName: "STRING_VALUE",
 * //         OU: "STRING_VALUE",
 * //         AuthSecretArn: "STRING_VALUE",
 * //         DnsIps: [
 * //           "STRING_VALUE",
 * //         ],
 * //       },
 * //     ],
 * //     TagList: [ // TagList
 * //       { // Tag
 * //         Key: "STRING_VALUE",
 * //         Value: "STRING_VALUE",
 * //       },
 * //     ],
 * //     GlobalClusterIdentifier: "STRING_VALUE",
 * //     GlobalWriteForwardingStatus: "enabled" || "disabled" || "enabling" || "disabling" || "unknown",
 * //     GlobalWriteForwardingRequested: true || false,
 * //     NetworkType: "STRING_VALUE",
 * //     AutomaticRestartTime: new Date("TIMESTAMP"),
 * //     ServerlessV2ScalingConfiguration: { // ServerlessV2ScalingConfigurationInfo
 * //       MinCapacity: Number("double"),
 * //       MaxCapacity: Number("double"),
 * //       SecondsUntilAutoPause: Number("int"),
 * //     },
 * //     ServerlessV2PlatformVersion: "STRING_VALUE",
 * //     MonitoringInterval: Number("int"),
 * //     MonitoringRoleArn: "STRING_VALUE",
 * //     DatabaseInsightsMode: "standard" || "advanced",
 * //     PerformanceInsightsEnabled: true || false,
 * //     PerformanceInsightsKMSKeyId: "STRING_VALUE",
 * //     PerformanceInsightsRetentionPeriod: Number("int"),
 * //     DBSystemId: "STRING_VALUE",
 * //     MasterUserSecret: { // MasterUserSecret
 * //       SecretArn: "STRING_VALUE",
 * //       SecretStatus: "STRING_VALUE",
 * //       KmsKeyId: "STRING_VALUE",
 * //     },
 * //     LocalWriteForwardingStatus: "enabled" || "disabled" || "enabling" || "disabling" || "requested",
 * //     AwsBackupRecoveryPointArn: "STRING_VALUE",
 * //     LimitlessDatabase: { // LimitlessDatabase
 * //       Status: "active" || "not-in-use" || "enabled" || "disabled" || "enabling" || "disabling" || "modifying-max-capacity" || "error",
 * //       MinRequiredACU: Number("double"),
 * //     },
 * //     ClusterScalabilityType: "standard" || "limitless",
 * //     CertificateDetails: {
 * //       CAIdentifier: "STRING_VALUE",
 * //       ValidTill: new Date("TIMESTAMP"),
 * //     },
 * //     EngineLifecycleSupport: "STRING_VALUE",
 * //     VPCNetworkingEnabled: true || false,
 * //     InternetAccessGatewayEnabled: true || false,
 * //   },
 * // };
 *
 * ```
 *
 * @param FailoverDBClusterCommandInput - {@link FailoverDBClusterCommandInput}
 * @returns {@link FailoverDBClusterCommandOutput}
 * @see {@link FailoverDBClusterCommandInput} for command's `input` shape.
 * @see {@link FailoverDBClusterCommandOutput} for command's `response` shape.
 * @see {@link RDSClientResolvedConfig | config} for RDSClient's `config` shape.
 *
 * @throws {@link DBClusterNotFoundFault} (client fault)
 *  <p> <code>DBClusterIdentifier</code> doesn't refer to an existing DB cluster.</p>
 *
 * @throws {@link InvalidDBClusterStateFault} (client fault)
 *  <p>The requested operation can't be performed while the cluster is in this state.</p>
 *
 * @throws {@link InvalidDBInstanceStateFault} (client fault)
 *  <p>The DB instance isn't in a valid state.</p>
 *
 * @throws {@link RDSServiceException}
 * <p>Base exception class for all service exceptions from RDS service.</p>
 *
 *
 * @example To perform a failover for a DB cluster
 * ```javascript
 * // This example performs a failover for the specified DB cluster to the specified DB instance.
 * const input = {
 *   DBClusterIdentifier: "myaurorainstance-cluster",
 *   TargetDBInstanceIdentifier: "myaurorareplica"
 * };
 * const command = new FailoverDBClusterCommand(input);
 * const response = await client.send(command);
 * /* response is
 * {
 *   DBCluster:   { /* empty *\/ }
 * }
 * *\/
 * ```
 *
 * @public
 */
export declare class FailoverDBClusterCommand extends FailoverDBClusterCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: FailoverDBClusterMessage;
            output: FailoverDBClusterResult;
        };
        sdk: {
            input: FailoverDBClusterCommandInput;
            output: FailoverDBClusterCommandOutput;
        };
    };
}