1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package medialive
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/medialive/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// Produces list of channels that have been created
16func (c *Client) ListChannels(ctx context.Context, params *ListChannelsInput, optFns ...func(*Options)) (*ListChannelsOutput, error) {
17	if params == nil {
18		params = &ListChannelsInput{}
19	}
20
21	result, metadata, err := c.invokeOperation(ctx, "ListChannels", params, optFns, addOperationListChannelsMiddlewares)
22	if err != nil {
23		return nil, err
24	}
25
26	out := result.(*ListChannelsOutput)
27	out.ResultMetadata = metadata
28	return out, nil
29}
30
31// Placeholder documentation for ListChannelsRequest
32type ListChannelsInput struct {
33
34	// Placeholder documentation for MaxResults
35	MaxResults int32
36
37	// Placeholder documentation for __string
38	NextToken *string
39}
40
41// Placeholder documentation for ListChannelsResponse
42type ListChannelsOutput struct {
43
44	// Placeholder documentation for __listOfChannelSummary
45	Channels []types.ChannelSummary
46
47	// Placeholder documentation for __string
48	NextToken *string
49
50	// Metadata pertaining to the operation's result.
51	ResultMetadata middleware.Metadata
52}
53
54func addOperationListChannelsMiddlewares(stack *middleware.Stack, options Options) (err error) {
55	err = stack.Serialize.Add(&awsRestjson1_serializeOpListChannels{}, middleware.After)
56	if err != nil {
57		return err
58	}
59	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListChannels{}, middleware.After)
60	if err != nil {
61		return err
62	}
63	if err = addSetLoggerMiddleware(stack, options); err != nil {
64		return err
65	}
66	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
67		return err
68	}
69	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
70		return err
71	}
72	if err = addResolveEndpointMiddleware(stack, options); err != nil {
73		return err
74	}
75	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
76		return err
77	}
78	if err = addRetryMiddlewares(stack, options); err != nil {
79		return err
80	}
81	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
82		return err
83	}
84	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
85		return err
86	}
87	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
88		return err
89	}
90	if err = addClientUserAgent(stack); err != nil {
91		return err
92	}
93	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
94		return err
95	}
96	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
97		return err
98	}
99	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListChannels(options.Region), middleware.Before); err != nil {
100		return err
101	}
102	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
103		return err
104	}
105	if err = addResponseErrorMiddleware(stack); err != nil {
106		return err
107	}
108	if err = addRequestResponseLogging(stack, options); err != nil {
109		return err
110	}
111	return nil
112}
113
114// ListChannelsAPIClient is a client that implements the ListChannels operation.
115type ListChannelsAPIClient interface {
116	ListChannels(context.Context, *ListChannelsInput, ...func(*Options)) (*ListChannelsOutput, error)
117}
118
119var _ ListChannelsAPIClient = (*Client)(nil)
120
121// ListChannelsPaginatorOptions is the paginator options for ListChannels
122type ListChannelsPaginatorOptions struct {
123	// Placeholder documentation for MaxResults
124	Limit int32
125
126	// Set to true if pagination should stop if the service returns a pagination token
127	// that matches the most recent token provided to the service.
128	StopOnDuplicateToken bool
129}
130
131// ListChannelsPaginator is a paginator for ListChannels
132type ListChannelsPaginator struct {
133	options   ListChannelsPaginatorOptions
134	client    ListChannelsAPIClient
135	params    *ListChannelsInput
136	nextToken *string
137	firstPage bool
138}
139
140// NewListChannelsPaginator returns a new ListChannelsPaginator
141func NewListChannelsPaginator(client ListChannelsAPIClient, params *ListChannelsInput, optFns ...func(*ListChannelsPaginatorOptions)) *ListChannelsPaginator {
142	options := ListChannelsPaginatorOptions{}
143	if params.MaxResults != 0 {
144		options.Limit = params.MaxResults
145	}
146
147	for _, fn := range optFns {
148		fn(&options)
149	}
150
151	if params == nil {
152		params = &ListChannelsInput{}
153	}
154
155	return &ListChannelsPaginator{
156		options:   options,
157		client:    client,
158		params:    params,
159		firstPage: true,
160	}
161}
162
163// HasMorePages returns a boolean indicating whether more pages are available
164func (p *ListChannelsPaginator) HasMorePages() bool {
165	return p.firstPage || p.nextToken != nil
166}
167
168// NextPage retrieves the next ListChannels page.
169func (p *ListChannelsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListChannelsOutput, error) {
170	if !p.HasMorePages() {
171		return nil, fmt.Errorf("no more pages available")
172	}
173
174	params := *p.params
175	params.NextToken = p.nextToken
176
177	params.MaxResults = p.options.Limit
178
179	result, err := p.client.ListChannels(ctx, &params, optFns...)
180	if err != nil {
181		return nil, err
182	}
183	p.firstPage = false
184
185	prevToken := p.nextToken
186	p.nextToken = result.NextToken
187
188	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
189		p.nextToken = nil
190	}
191
192	return result, nil
193}
194
195func newServiceMetadataMiddleware_opListChannels(region string) *awsmiddleware.RegisterServiceMetadata {
196	return &awsmiddleware.RegisterServiceMetadata{
197		Region:        region,
198		ServiceID:     ServiceID,
199		SigningName:   "medialive",
200		OperationName: "ListChannels",
201	}
202}
203