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api_op_ListElasticsearchVersions.go
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api_op_ListElasticsearchVersions.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/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// List all supported Elasticsearch versions
func (c *Client) ListElasticsearchVersions(ctx context.Context, params *ListElasticsearchVersionsInput, optFns ...func(*Options)) (*ListElasticsearchVersionsOutput, error) {
if params == nil {
params = &ListElasticsearchVersionsInput{}
}
result, metadata, err := c.invokeOperation(ctx, "ListElasticsearchVersions", params, optFns, c.addOperationListElasticsearchVersionsMiddlewares)
if err != nil {
return nil, err
}
out := result.(*ListElasticsearchVersionsOutput)
out.ResultMetadata = metadata
return out, nil
}
// Container for the parameters to the ListElasticsearchVersions operation. Use
// MaxResults to control the maximum number of results to retrieve in a single
// call. Use NextToken in response to retrieve more results. If the received
// response does not contain a NextToken, then there are no more results to
// retrieve.
type ListElasticsearchVersionsInput struct {
// Set this value to limit the number of results returned. Value provided must be
// greater than 10 else it wont be honored.
MaxResults int32
// Paginated APIs accepts NextToken input to returns next page results and provides
// a NextToken output in the response which can be used by the client to retrieve
// more results.
NextToken *string
noSmithyDocumentSerde
}
// Container for the parameters for response received from
// ListElasticsearchVersions operation.
type ListElasticsearchVersionsOutput struct {
// List of supported elastic search versions.
ElasticsearchVersions []string
// Paginated APIs accepts NextToken input to returns next page results and provides
// a NextToken output in the response which can be used by the client to retrieve
// more results.
NextToken *string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationListElasticsearchVersionsMiddlewares(stack *middleware.Stack, options Options) (err error) {
err = stack.Serialize.Add(&awsRestjson1_serializeOpListElasticsearchVersions{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListElasticsearchVersions{}, middleware.After)
if 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 = addHTTPSignerV4Middleware(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); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListElasticsearchVersions(options.Region), middleware.Before); 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
}
return nil
}
// ListElasticsearchVersionsAPIClient is a client that implements the
// ListElasticsearchVersions operation.
type ListElasticsearchVersionsAPIClient interface {
ListElasticsearchVersions(context.Context, *ListElasticsearchVersionsInput, ...func(*Options)) (*ListElasticsearchVersionsOutput, error)
}
var _ ListElasticsearchVersionsAPIClient = (*Client)(nil)
// ListElasticsearchVersionsPaginatorOptions is the paginator options for
// ListElasticsearchVersions
type ListElasticsearchVersionsPaginatorOptions struct {
// Set this value to limit the number of results returned. Value provided must be
// greater than 10 else it wont be honored.
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
}
// ListElasticsearchVersionsPaginator is a paginator for ListElasticsearchVersions
type ListElasticsearchVersionsPaginator struct {
options ListElasticsearchVersionsPaginatorOptions
client ListElasticsearchVersionsAPIClient
params *ListElasticsearchVersionsInput
nextToken *string
firstPage bool
}
// NewListElasticsearchVersionsPaginator returns a new
// ListElasticsearchVersionsPaginator
func NewListElasticsearchVersionsPaginator(client ListElasticsearchVersionsAPIClient, params *ListElasticsearchVersionsInput, optFns ...func(*ListElasticsearchVersionsPaginatorOptions)) *ListElasticsearchVersionsPaginator {
if params == nil {
params = &ListElasticsearchVersionsInput{}
}
options := ListElasticsearchVersionsPaginatorOptions{}
if params.MaxResults != 0 {
options.Limit = params.MaxResults
}
for _, fn := range optFns {
fn(&options)
}
return &ListElasticsearchVersionsPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListElasticsearchVersionsPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next ListElasticsearchVersions page.
func (p *ListElasticsearchVersionsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListElasticsearchVersionsOutput, 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.ListElasticsearchVersions(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_opListElasticsearchVersions(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
SigningName: "es",
OperationName: "ListElasticsearchVersions",
}
}