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api_op_DescribeReservedElasticsearchInstances.go
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api_op_DescribeReservedElasticsearchInstances.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package elasticsearchservice
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/elasticsearchservice/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Returns information about reserved Elasticsearch instances for this account.
func (c *Client) DescribeReservedElasticsearchInstances(ctx context.Context, params *DescribeReservedElasticsearchInstancesInput, optFns ...func(*Options)) (*DescribeReservedElasticsearchInstancesOutput, error) {
if params == nil {
params = &DescribeReservedElasticsearchInstancesInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeReservedElasticsearchInstances", params, optFns, c.addOperationDescribeReservedElasticsearchInstancesMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeReservedElasticsearchInstancesOutput)
out.ResultMetadata = metadata
return out, nil
}
// Container for parameters to DescribeReservedElasticsearchInstances
type DescribeReservedElasticsearchInstancesInput struct {
// Set this value to limit the number of results returned. If not specified,
// defaults to 100.
MaxResults int32
// NextToken should be sent in case if earlier API call produced result containing
// NextToken. It is used for pagination.
NextToken *string
// The reserved instance identifier filter value. Use this parameter to show only
// the reservation that matches the specified reserved Elasticsearch instance ID.
ReservedElasticsearchInstanceId *string
noSmithyDocumentSerde
}
// Container for results from DescribeReservedElasticsearchInstances
type DescribeReservedElasticsearchInstancesOutput struct {
// Provides an identifier to allow retrieval of paginated results.
NextToken *string
// List of reserved Elasticsearch instances.
ReservedElasticsearchInstances []types.ReservedElasticsearchInstance
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeReservedElasticsearchInstancesMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsRestjson1_serializeOpDescribeReservedElasticsearchInstances{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsRestjson1_deserializeOpDescribeReservedElasticsearchInstances{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "DescribeReservedElasticsearchInstances"); 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 = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeReservedElasticsearchInstances(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
}
// DescribeReservedElasticsearchInstancesAPIClient is a client that implements the
// DescribeReservedElasticsearchInstances operation.
type DescribeReservedElasticsearchInstancesAPIClient interface {
DescribeReservedElasticsearchInstances(context.Context, *DescribeReservedElasticsearchInstancesInput, ...func(*Options)) (*DescribeReservedElasticsearchInstancesOutput, error)
}
var _ DescribeReservedElasticsearchInstancesAPIClient = (*Client)(nil)
// DescribeReservedElasticsearchInstancesPaginatorOptions is the paginator options
// for DescribeReservedElasticsearchInstances
type DescribeReservedElasticsearchInstancesPaginatorOptions struct {
// Set this value to limit the number of results returned. If not specified,
// defaults to 100.
Limit int32
// Set to true if pagination should stop if the service returns a pagination token
// that matches the most recent token provided to the service.
StopOnDuplicateToken bool
}
// DescribeReservedElasticsearchInstancesPaginator is a paginator for
// DescribeReservedElasticsearchInstances
type DescribeReservedElasticsearchInstancesPaginator struct {
options DescribeReservedElasticsearchInstancesPaginatorOptions
client DescribeReservedElasticsearchInstancesAPIClient
params *DescribeReservedElasticsearchInstancesInput
nextToken *string
firstPage bool
}
// NewDescribeReservedElasticsearchInstancesPaginator returns a new
// DescribeReservedElasticsearchInstancesPaginator
func NewDescribeReservedElasticsearchInstancesPaginator(client DescribeReservedElasticsearchInstancesAPIClient, params *DescribeReservedElasticsearchInstancesInput, optFns ...func(*DescribeReservedElasticsearchInstancesPaginatorOptions)) *DescribeReservedElasticsearchInstancesPaginator {
if params == nil {
params = &DescribeReservedElasticsearchInstancesInput{}
}
options := DescribeReservedElasticsearchInstancesPaginatorOptions{}
if params.MaxResults != 0 {
options.Limit = params.MaxResults
}
for _, fn := range optFns {
fn(&options)
}
return &DescribeReservedElasticsearchInstancesPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *DescribeReservedElasticsearchInstancesPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next DescribeReservedElasticsearchInstances page.
func (p *DescribeReservedElasticsearchInstancesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeReservedElasticsearchInstancesOutput, error) {
if !p.HasMorePages() {
return nil, fmt.Errorf("no more pages available")
}
params := *p.params
params.NextToken = p.nextToken
params.MaxResults = p.options.Limit
result, err := p.client.DescribeReservedElasticsearchInstances(ctx, ¶ms, optFns...)
if err != nil {
return nil, err
}
p.firstPage = false
prevToken := p.nextToken
p.nextToken = result.NextToken
if p.options.StopOnDuplicateToken &&
prevToken != nil &&
p.nextToken != nil &&
*prevToken == *p.nextToken {
p.nextToken = nil
}
return result, nil
}
func newServiceMetadataMiddleware_opDescribeReservedElasticsearchInstances(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "DescribeReservedElasticsearchInstances",
}
}