1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package elasticsearchservice
4
5import (
6	"context"
7	"fmt"
8	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
9	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
10	"github.com/aws/aws-sdk-go-v2/service/elasticsearchservice/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// Lists available reserved Elasticsearch instance offerings.
16func (c *Client) DescribeReservedElasticsearchInstanceOfferings(ctx context.Context, params *DescribeReservedElasticsearchInstanceOfferingsInput, optFns ...func(*Options)) (*DescribeReservedElasticsearchInstanceOfferingsOutput, error) {
17	if params == nil {
18		params = &DescribeReservedElasticsearchInstanceOfferingsInput{}
19	}
20
21	result, metadata, err := c.invokeOperation(ctx, "DescribeReservedElasticsearchInstanceOfferings", params, optFns, c.addOperationDescribeReservedElasticsearchInstanceOfferingsMiddlewares)
22	if err != nil {
23		return nil, err
24	}
25
26	out := result.(*DescribeReservedElasticsearchInstanceOfferingsOutput)
27	out.ResultMetadata = metadata
28	return out, nil
29}
30
31// Container for parameters to DescribeReservedElasticsearchInstanceOfferings
32type DescribeReservedElasticsearchInstanceOfferingsInput struct {
33
34	// Set this value to limit the number of results returned. If not specified,
35	// defaults to 100.
36	MaxResults int32
37
38	// NextToken should be sent in case if earlier API call produced result containing
39	// NextToken. It is used for pagination.
40	NextToken *string
41
42	// The offering identifier filter value. Use this parameter to show only the
43	// available offering that matches the specified reservation identifier.
44	ReservedElasticsearchInstanceOfferingId *string
45
46	noSmithyDocumentSerde
47}
48
49// Container for results from DescribeReservedElasticsearchInstanceOfferings
50type DescribeReservedElasticsearchInstanceOfferingsOutput struct {
51
52	// Provides an identifier to allow retrieval of paginated results.
53	NextToken *string
54
55	// List of reserved Elasticsearch instance offerings
56	ReservedElasticsearchInstanceOfferings []types.ReservedElasticsearchInstanceOffering
57
58	// Metadata pertaining to the operation's result.
59	ResultMetadata middleware.Metadata
60
61	noSmithyDocumentSerde
62}
63
64func (c *Client) addOperationDescribeReservedElasticsearchInstanceOfferingsMiddlewares(stack *middleware.Stack, options Options) (err error) {
65	err = stack.Serialize.Add(&awsRestjson1_serializeOpDescribeReservedElasticsearchInstanceOfferings{}, middleware.After)
66	if err != nil {
67		return err
68	}
69	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpDescribeReservedElasticsearchInstanceOfferings{}, middleware.After)
70	if err != nil {
71		return err
72	}
73	if err = addSetLoggerMiddleware(stack, options); err != nil {
74		return err
75	}
76	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
77		return err
78	}
79	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
80		return err
81	}
82	if err = addResolveEndpointMiddleware(stack, options); err != nil {
83		return err
84	}
85	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
86		return err
87	}
88	if err = addRetryMiddlewares(stack, options); err != nil {
89		return err
90	}
91	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
92		return err
93	}
94	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
95		return err
96	}
97	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
98		return err
99	}
100	if err = addClientUserAgent(stack); err != nil {
101		return err
102	}
103	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
104		return err
105	}
106	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
107		return err
108	}
109	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeReservedElasticsearchInstanceOfferings(options.Region), middleware.Before); err != nil {
110		return err
111	}
112	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
113		return err
114	}
115	if err = addResponseErrorMiddleware(stack); err != nil {
116		return err
117	}
118	if err = addRequestResponseLogging(stack, options); err != nil {
119		return err
120	}
121	return nil
122}
123
124// DescribeReservedElasticsearchInstanceOfferingsAPIClient is a client that
125// implements the DescribeReservedElasticsearchInstanceOfferings operation.
126type DescribeReservedElasticsearchInstanceOfferingsAPIClient interface {
127	DescribeReservedElasticsearchInstanceOfferings(context.Context, *DescribeReservedElasticsearchInstanceOfferingsInput, ...func(*Options)) (*DescribeReservedElasticsearchInstanceOfferingsOutput, error)
128}
129
130var _ DescribeReservedElasticsearchInstanceOfferingsAPIClient = (*Client)(nil)
131
132// DescribeReservedElasticsearchInstanceOfferingsPaginatorOptions is the paginator
133// options for DescribeReservedElasticsearchInstanceOfferings
134type DescribeReservedElasticsearchInstanceOfferingsPaginatorOptions struct {
135	// Set this value to limit the number of results returned. If not specified,
136	// defaults to 100.
137	Limit int32
138
139	// Set to true if pagination should stop if the service returns a pagination token
140	// that matches the most recent token provided to the service.
141	StopOnDuplicateToken bool
142}
143
144// DescribeReservedElasticsearchInstanceOfferingsPaginator is a paginator for
145// DescribeReservedElasticsearchInstanceOfferings
146type DescribeReservedElasticsearchInstanceOfferingsPaginator struct {
147	options   DescribeReservedElasticsearchInstanceOfferingsPaginatorOptions
148	client    DescribeReservedElasticsearchInstanceOfferingsAPIClient
149	params    *DescribeReservedElasticsearchInstanceOfferingsInput
150	nextToken *string
151	firstPage bool
152}
153
154// NewDescribeReservedElasticsearchInstanceOfferingsPaginator returns a new
155// DescribeReservedElasticsearchInstanceOfferingsPaginator
156func NewDescribeReservedElasticsearchInstanceOfferingsPaginator(client DescribeReservedElasticsearchInstanceOfferingsAPIClient, params *DescribeReservedElasticsearchInstanceOfferingsInput, optFns ...func(*DescribeReservedElasticsearchInstanceOfferingsPaginatorOptions)) *DescribeReservedElasticsearchInstanceOfferingsPaginator {
157	if params == nil {
158		params = &DescribeReservedElasticsearchInstanceOfferingsInput{}
159	}
160
161	options := DescribeReservedElasticsearchInstanceOfferingsPaginatorOptions{}
162	if params.MaxResults != 0 {
163		options.Limit = params.MaxResults
164	}
165
166	for _, fn := range optFns {
167		fn(&options)
168	}
169
170	return &DescribeReservedElasticsearchInstanceOfferingsPaginator{
171		options:   options,
172		client:    client,
173		params:    params,
174		firstPage: true,
175	}
176}
177
178// HasMorePages returns a boolean indicating whether more pages are available
179func (p *DescribeReservedElasticsearchInstanceOfferingsPaginator) HasMorePages() bool {
180	return p.firstPage || p.nextToken != nil
181}
182
183// NextPage retrieves the next DescribeReservedElasticsearchInstanceOfferings page.
184func (p *DescribeReservedElasticsearchInstanceOfferingsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeReservedElasticsearchInstanceOfferingsOutput, error) {
185	if !p.HasMorePages() {
186		return nil, fmt.Errorf("no more pages available")
187	}
188
189	params := *p.params
190	params.NextToken = p.nextToken
191
192	params.MaxResults = p.options.Limit
193
194	result, err := p.client.DescribeReservedElasticsearchInstanceOfferings(ctx, &params, optFns...)
195	if err != nil {
196		return nil, err
197	}
198	p.firstPage = false
199
200	prevToken := p.nextToken
201	p.nextToken = result.NextToken
202
203	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
204		p.nextToken = nil
205	}
206
207	return result, nil
208}
209
210func newServiceMetadataMiddleware_opDescribeReservedElasticsearchInstanceOfferings(region string) *awsmiddleware.RegisterServiceMetadata {
211	return &awsmiddleware.RegisterServiceMetadata{
212		Region:        region,
213		ServiceID:     ServiceID,
214		SigningName:   "es",
215		OperationName: "DescribeReservedElasticsearchInstanceOfferings",
216	}
217}
218