import { Command as $Command } from "@smithy/smithy-client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { ElastiCacheClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../ElastiCacheClient";
import type { DecreaseReplicaCountMessage, DecreaseReplicaCountResult } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link DecreaseReplicaCountCommand}.
 */
export interface DecreaseReplicaCountCommandInput extends DecreaseReplicaCountMessage {
}
/**
 * @public
 *
 * The output of {@link DecreaseReplicaCountCommand}.
 */
export interface DecreaseReplicaCountCommandOutput extends DecreaseReplicaCountResult, __MetadataBearer {
}
declare const DecreaseReplicaCountCommand_base: {
    new (input: DecreaseReplicaCountCommandInput): import("@smithy/smithy-client").CommandImpl<DecreaseReplicaCountCommandInput, DecreaseReplicaCountCommandOutput, ElastiCacheClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: DecreaseReplicaCountCommandInput): import("@smithy/smithy-client").CommandImpl<DecreaseReplicaCountCommandInput, DecreaseReplicaCountCommandOutput, ElastiCacheClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/middleware-endpoint").EndpointParameterInstructions;
};
/**
 * <p>Dynamically decreases the number of replicas in a Valkey or Redis OSS (cluster mode disabled)
 *             replication group or the number of replica nodes in one or more node groups (shards) of
 *             a Valkey or Redis OSS (cluster mode enabled) replication group. This operation is performed with no
 *             cluster down time.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { ElastiCacheClient, DecreaseReplicaCountCommand } from "@aws-sdk/client-elasticache"; // ES Modules import
 * // const { ElastiCacheClient, DecreaseReplicaCountCommand } = require("@aws-sdk/client-elasticache"); // CommonJS import
 * // import type { ElastiCacheClientConfig } from "@aws-sdk/client-elasticache";
 * const config = {}; // type is ElastiCacheClientConfig
 * const client = new ElastiCacheClient(config);
 * const input = { // DecreaseReplicaCountMessage
 *   ReplicationGroupId: "STRING_VALUE", // required
 *   NewReplicaCount: Number("int"),
 *   ReplicaConfiguration: [ // ReplicaConfigurationList
 *     { // ConfigureShard
 *       NodeGroupId: "STRING_VALUE", // required
 *       NewReplicaCount: Number("int"), // required
 *       PreferredAvailabilityZones: [ // PreferredAvailabilityZoneList
 *         "STRING_VALUE",
 *       ],
 *       PreferredOutpostArns: [ // PreferredOutpostArnList
 *         "STRING_VALUE",
 *       ],
 *     },
 *   ],
 *   ReplicasToRemove: [ // RemoveReplicasList
 *     "STRING_VALUE",
 *   ],
 *   ApplyImmediately: true || false, // required
 * };
 * const command = new DecreaseReplicaCountCommand(input);
 * const response = await client.send(command);
 * // { // DecreaseReplicaCountResult
 * //   ReplicationGroup: { // ReplicationGroup
 * //     ReplicationGroupId: "STRING_VALUE",
 * //     Description: "STRING_VALUE",
 * //     GlobalReplicationGroupInfo: { // GlobalReplicationGroupInfo
 * //       GlobalReplicationGroupId: "STRING_VALUE",
 * //       GlobalReplicationGroupMemberRole: "STRING_VALUE",
 * //     },
 * //     Status: "STRING_VALUE",
 * //     PendingModifiedValues: { // ReplicationGroupPendingModifiedValues
 * //       PrimaryClusterId: "STRING_VALUE",
 * //       AutomaticFailoverStatus: "enabled" || "disabled",
 * //       Resharding: { // ReshardingStatus
 * //         SlotMigration: { // SlotMigration
 * //           ProgressPercentage: Number("double"),
 * //         },
 * //       },
 * //       AuthTokenStatus: "SETTING" || "ROTATING",
 * //       UserGroups: { // UserGroupsUpdateStatus
 * //         UserGroupIdsToAdd: [ // UserGroupIdList
 * //           "STRING_VALUE",
 * //         ],
 * //         UserGroupIdsToRemove: [
 * //           "STRING_VALUE",
 * //         ],
 * //       },
 * //       LogDeliveryConfigurations: [ // PendingLogDeliveryConfigurationList
 * //         { // PendingLogDeliveryConfiguration
 * //           LogType: "slow-log" || "engine-log",
 * //           DestinationType: "cloudwatch-logs" || "kinesis-firehose",
 * //           DestinationDetails: { // DestinationDetails
 * //             CloudWatchLogsDetails: { // CloudWatchLogsDestinationDetails
 * //               LogGroup: "STRING_VALUE",
 * //             },
 * //             KinesisFirehoseDetails: { // KinesisFirehoseDestinationDetails
 * //               DeliveryStream: "STRING_VALUE",
 * //             },
 * //           },
 * //           LogFormat: "text" || "json",
 * //         },
 * //       ],
 * //       TransitEncryptionEnabled: true || false,
 * //       TransitEncryptionMode: "preferred" || "required",
 * //       ClusterMode: "enabled" || "disabled" || "compatible",
 * //     },
 * //     MemberClusters: [ // ClusterIdList
 * //       "STRING_VALUE",
 * //     ],
 * //     NodeGroups: [ // NodeGroupList
 * //       { // NodeGroup
 * //         NodeGroupId: "STRING_VALUE",
 * //         Status: "STRING_VALUE",
 * //         PrimaryEndpoint: { // Endpoint
 * //           Address: "STRING_VALUE",
 * //           Port: Number("int"),
 * //         },
 * //         ReaderEndpoint: {
 * //           Address: "STRING_VALUE",
 * //           Port: Number("int"),
 * //         },
 * //         Slots: "STRING_VALUE",
 * //         NodeGroupMembers: [ // NodeGroupMemberList
 * //           { // NodeGroupMember
 * //             CacheClusterId: "STRING_VALUE",
 * //             CacheNodeId: "STRING_VALUE",
 * //             ReadEndpoint: {
 * //               Address: "STRING_VALUE",
 * //               Port: Number("int"),
 * //             },
 * //             PreferredAvailabilityZone: "STRING_VALUE",
 * //             PreferredOutpostArn: "STRING_VALUE",
 * //             CurrentRole: "STRING_VALUE",
 * //           },
 * //         ],
 * //       },
 * //     ],
 * //     SnapshottingClusterId: "STRING_VALUE",
 * //     AutomaticFailover: "enabled" || "disabled" || "enabling" || "disabling",
 * //     MultiAZ: "enabled" || "disabled",
 * //     ConfigurationEndpoint: "<Endpoint>",
 * //     SnapshotRetentionLimit: Number("int"),
 * //     SnapshotWindow: "STRING_VALUE",
 * //     ClusterEnabled: true || false,
 * //     CacheNodeType: "STRING_VALUE",
 * //     AuthTokenEnabled: true || false,
 * //     AuthTokenLastModifiedDate: new Date("TIMESTAMP"),
 * //     TransitEncryptionEnabled: true || false,
 * //     AtRestEncryptionEnabled: true || false,
 * //     MemberClustersOutpostArns: [ // ReplicationGroupOutpostArnList
 * //       "STRING_VALUE",
 * //     ],
 * //     KmsKeyId: "STRING_VALUE",
 * //     ARN: "STRING_VALUE",
 * //     UserGroupIds: [
 * //       "STRING_VALUE",
 * //     ],
 * //     LogDeliveryConfigurations: [ // LogDeliveryConfigurationList
 * //       { // LogDeliveryConfiguration
 * //         LogType: "slow-log" || "engine-log",
 * //         DestinationType: "cloudwatch-logs" || "kinesis-firehose",
 * //         DestinationDetails: {
 * //           CloudWatchLogsDetails: {
 * //             LogGroup: "STRING_VALUE",
 * //           },
 * //           KinesisFirehoseDetails: {
 * //             DeliveryStream: "STRING_VALUE",
 * //           },
 * //         },
 * //         LogFormat: "text" || "json",
 * //         Status: "active" || "enabling" || "modifying" || "disabling" || "error",
 * //         Message: "STRING_VALUE",
 * //       },
 * //     ],
 * //     ReplicationGroupCreateTime: new Date("TIMESTAMP"),
 * //     DataTiering: "enabled" || "disabled",
 * //     AutoMinorVersionUpgrade: true || false,
 * //     NetworkType: "ipv4" || "ipv6" || "dual_stack",
 * //     IpDiscovery: "ipv4" || "ipv6",
 * //     TransitEncryptionMode: "preferred" || "required",
 * //     ClusterMode: "enabled" || "disabled" || "compatible",
 * //     Engine: "STRING_VALUE",
 * //   },
 * // };
 *
 * ```
 *
 * @param DecreaseReplicaCountCommandInput - {@link DecreaseReplicaCountCommandInput}
 * @returns {@link DecreaseReplicaCountCommandOutput}
 * @see {@link DecreaseReplicaCountCommandInput} for command's `input` shape.
 * @see {@link DecreaseReplicaCountCommandOutput} for command's `response` shape.
 * @see {@link ElastiCacheClientResolvedConfig | config} for ElastiCacheClient's `config` shape.
 *
 * @throws {@link ClusterQuotaForCustomerExceededFault} (client fault)
 *  <p>The request cannot be processed because it would exceed the allowed number of clusters
 *             per customer.</p>
 *
 * @throws {@link InsufficientCacheClusterCapacityFault} (client fault)
 *  <p>The requested cache node type is not available in the specified Availability Zone. For
 *             more information, see <a href="http://docs.aws.amazon.com/AmazonElastiCache/latest/dg/ErrorMessages.html#ErrorMessages.INSUFFICIENT_CACHE_CLUSTER_CAPACITY">InsufficientCacheClusterCapacity</a> in the ElastiCache User Guide.</p>
 *
 * @throws {@link InvalidCacheClusterStateFault} (client fault)
 *  <p>The requested cluster is not in the <code>available</code> state.</p>
 *
 * @throws {@link InvalidParameterCombinationException} (client fault)
 *  <p>Two or more incompatible parameters were specified.</p>
 *
 * @throws {@link InvalidParameterValueException} (client fault)
 *  <p>The value for a parameter is invalid.</p>
 *
 * @throws {@link InvalidReplicationGroupStateFault} (client fault)
 *  <p>The requested replication group is not in the <code>available</code> state.</p>
 *
 * @throws {@link InvalidVPCNetworkStateFault} (client fault)
 *  <p>The VPC network is in an invalid state.</p>
 *
 * @throws {@link NodeGroupsPerReplicationGroupQuotaExceededFault} (client fault)
 *  <p>The request cannot be processed because it would exceed the maximum allowed number of
 *             node groups (shards) in a single replication group. The default maximum is 90</p>
 *
 * @throws {@link NodeQuotaForCustomerExceededFault} (client fault)
 *  <p>The request cannot be processed because it would exceed the allowed number of cache
 *             nodes per customer.</p>
 *
 * @throws {@link NoOperationFault} (client fault)
 *  <p>The operation was not performed because no changes were required.</p>
 *
 * @throws {@link ReplicationGroupNotFoundFault} (client fault)
 *  <p>The specified replication group does not exist.</p>
 *
 * @throws {@link ServiceLinkedRoleNotFoundFault} (client fault)
 *  <p>The specified service linked role (SLR) was not found.</p>
 *
 * @throws {@link ElastiCacheServiceException}
 * <p>Base exception class for all service exceptions from ElastiCache service.</p>
 *
 *
 * @public
 */
export declare class DecreaseReplicaCountCommand extends DecreaseReplicaCountCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: DecreaseReplicaCountMessage;
            output: DecreaseReplicaCountResult;
        };
        sdk: {
            input: DecreaseReplicaCountCommandInput;
            output: DecreaseReplicaCountCommandOutput;
        };
    };
}