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// Code generated by smithy-go-codegen DO NOT EDIT.
package elasticache
import (
"context"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/service/elasticache/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Dynamically decreases the number of replicas in a Redis (cluster mode disabled)
// replication group or the number of replica nodes in one or more node groups
// (shards) of a Redis (cluster mode enabled) replication group. This operation is
// performed with no cluster down time.
func (c *Client) DecreaseReplicaCount(ctx context.Context, params *DecreaseReplicaCountInput, optFns ...func(*Options)) (*DecreaseReplicaCountOutput, error) {
if params == nil {
params = &DecreaseReplicaCountInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DecreaseReplicaCount", params, optFns, c.addOperationDecreaseReplicaCountMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DecreaseReplicaCountOutput)
out.ResultMetadata = metadata
return out, nil
}
type DecreaseReplicaCountInput struct {
// If True , the number of replica nodes is decreased immediately.
// ApplyImmediately=False is not currently supported.
//
// This member is required.
ApplyImmediately *bool
// The id of the replication group from which you want to remove replica nodes.
//
// This member is required.
ReplicationGroupId *string
// The number of read replica nodes you want at the completion of this operation.
// For Redis (cluster mode disabled) replication groups, this is the number of
// replica nodes in the replication group. For Redis (cluster mode enabled)
// replication groups, this is the number of replica nodes in each of the
// replication group's node groups. The minimum number of replicas in a shard or
// replication group is:
// - Redis (cluster mode disabled)
// - If Multi-AZ is enabled: 1
// - If Multi-AZ is not enabled: 0
// - Redis (cluster mode enabled): 0 (though you will not be able to failover to
// a replica if your primary node fails)
NewReplicaCount *int32
// A list of ConfigureShard objects that can be used to configure each shard in a
// Redis (cluster mode enabled) replication group. The ConfigureShard has three
// members: NewReplicaCount , NodeGroupId , and PreferredAvailabilityZones .
ReplicaConfiguration []types.ConfigureShard
// A list of the node ids to remove from the replication group or node group
// (shard).
ReplicasToRemove []string
noSmithyDocumentSerde
}
type DecreaseReplicaCountOutput struct {
// Contains all of the attributes of a specific Redis replication group.
ReplicationGroup *types.ReplicationGroup
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDecreaseReplicaCountMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsAwsquery_serializeOpDecreaseReplicaCount{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsAwsquery_deserializeOpDecreaseReplicaCount{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "DecreaseReplicaCount"); err != nil {
return fmt.Errorf("add protocol finalizers: %v", err)
}
if err = addlegacyEndpointContextSetter(stack, options); err != nil {
return err
}
if err = addSetLoggerMiddleware(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
return err
}
if err = addResolveEndpointMiddleware(stack, options); err != nil {
return err
}
if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
return err
}
if err = addRetryMiddlewares(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
return err
}
if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
return err
}
if err = addClientUserAgent(stack, options); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
return err
}
if err = addOpDecreaseReplicaCountValidationMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDecreaseReplicaCount(options.Region), middleware.Before); err != nil {
return err
}
if err = awsmiddleware.AddRecursionDetection(stack); err != nil {
return err
}
if err = addRequestIDRetrieverMiddleware(stack); err != nil {
return err
}
if err = addResponseErrorMiddleware(stack); err != nil {
return err
}
if err = addRequestResponseLogging(stack, options); err != nil {
return err
}
if err = addDisableHTTPSMiddleware(stack, options); err != nil {
return err
}
return nil
}
func newServiceMetadataMiddleware_opDecreaseReplicaCount(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "DecreaseReplicaCount",
}
}
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