1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package ec2
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/ec2/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// Describes the ClassicLink DNS support status of one or more VPCs. If enabled,
16// the DNS hostname of a linked EC2-Classic instance resolves to its private IP
17// address when addressed from an instance in the VPC to which it's linked.
18// Similarly, the DNS hostname of an instance in a VPC resolves to its private IP
19// address when addressed from a linked EC2-Classic instance. For more information,
20// see ClassicLink
21// (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/vpc-classiclink.html) in
22// the Amazon Elastic Compute Cloud User Guide.
23func (c *Client) DescribeVpcClassicLinkDnsSupport(ctx context.Context, params *DescribeVpcClassicLinkDnsSupportInput, optFns ...func(*Options)) (*DescribeVpcClassicLinkDnsSupportOutput, error) {
24	if params == nil {
25		params = &DescribeVpcClassicLinkDnsSupportInput{}
26	}
27
28	result, metadata, err := c.invokeOperation(ctx, "DescribeVpcClassicLinkDnsSupport", params, optFns, addOperationDescribeVpcClassicLinkDnsSupportMiddlewares)
29	if err != nil {
30		return nil, err
31	}
32
33	out := result.(*DescribeVpcClassicLinkDnsSupportOutput)
34	out.ResultMetadata = metadata
35	return out, nil
36}
37
38type DescribeVpcClassicLinkDnsSupportInput struct {
39
40	// The maximum number of results to return with a single call. To retrieve the
41	// remaining results, make another call with the returned nextToken value.
42	MaxResults int32
43
44	// The token for the next page of results.
45	NextToken *string
46
47	// One or more VPC IDs.
48	VpcIds []string
49}
50
51type DescribeVpcClassicLinkDnsSupportOutput struct {
52
53	// The token to use to retrieve the next page of results. This value is null when
54	// there are no more results to return.
55	NextToken *string
56
57	// Information about the ClassicLink DNS support status of the VPCs.
58	Vpcs []types.ClassicLinkDnsSupport
59
60	// Metadata pertaining to the operation's result.
61	ResultMetadata middleware.Metadata
62}
63
64func addOperationDescribeVpcClassicLinkDnsSupportMiddlewares(stack *middleware.Stack, options Options) (err error) {
65	err = stack.Serialize.Add(&awsEc2query_serializeOpDescribeVpcClassicLinkDnsSupport{}, middleware.After)
66	if err != nil {
67		return err
68	}
69	err = stack.Deserialize.Add(&awsEc2query_deserializeOpDescribeVpcClassicLinkDnsSupport{}, 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_opDescribeVpcClassicLinkDnsSupport(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// DescribeVpcClassicLinkDnsSupportAPIClient is a client that implements the
125// DescribeVpcClassicLinkDnsSupport operation.
126type DescribeVpcClassicLinkDnsSupportAPIClient interface {
127	DescribeVpcClassicLinkDnsSupport(context.Context, *DescribeVpcClassicLinkDnsSupportInput, ...func(*Options)) (*DescribeVpcClassicLinkDnsSupportOutput, error)
128}
129
130var _ DescribeVpcClassicLinkDnsSupportAPIClient = (*Client)(nil)
131
132// DescribeVpcClassicLinkDnsSupportPaginatorOptions is the paginator options for
133// DescribeVpcClassicLinkDnsSupport
134type DescribeVpcClassicLinkDnsSupportPaginatorOptions struct {
135	// The maximum number of results to return with a single call. To retrieve the
136	// remaining results, make another call with the returned nextToken value.
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// DescribeVpcClassicLinkDnsSupportPaginator is a paginator for
145// DescribeVpcClassicLinkDnsSupport
146type DescribeVpcClassicLinkDnsSupportPaginator struct {
147	options   DescribeVpcClassicLinkDnsSupportPaginatorOptions
148	client    DescribeVpcClassicLinkDnsSupportAPIClient
149	params    *DescribeVpcClassicLinkDnsSupportInput
150	nextToken *string
151	firstPage bool
152}
153
154// NewDescribeVpcClassicLinkDnsSupportPaginator returns a new
155// DescribeVpcClassicLinkDnsSupportPaginator
156func NewDescribeVpcClassicLinkDnsSupportPaginator(client DescribeVpcClassicLinkDnsSupportAPIClient, params *DescribeVpcClassicLinkDnsSupportInput, optFns ...func(*DescribeVpcClassicLinkDnsSupportPaginatorOptions)) *DescribeVpcClassicLinkDnsSupportPaginator {
157	options := DescribeVpcClassicLinkDnsSupportPaginatorOptions{}
158	if params.MaxResults != 0 {
159		options.Limit = params.MaxResults
160	}
161
162	for _, fn := range optFns {
163		fn(&options)
164	}
165
166	if params == nil {
167		params = &DescribeVpcClassicLinkDnsSupportInput{}
168	}
169
170	return &DescribeVpcClassicLinkDnsSupportPaginator{
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 *DescribeVpcClassicLinkDnsSupportPaginator) HasMorePages() bool {
180	return p.firstPage || p.nextToken != nil
181}
182
183// NextPage retrieves the next DescribeVpcClassicLinkDnsSupport page.
184func (p *DescribeVpcClassicLinkDnsSupportPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeVpcClassicLinkDnsSupportOutput, 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.DescribeVpcClassicLinkDnsSupport(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_opDescribeVpcClassicLinkDnsSupport(region string) *awsmiddleware.RegisterServiceMetadata {
211	return &awsmiddleware.RegisterServiceMetadata{
212		Region:        region,
213		ServiceID:     ServiceID,
214		SigningName:   "ec2",
215		OperationName: "DescribeVpcClassicLinkDnsSupport",
216	}
217}
218