1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package appconfig
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/appconfig/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// List the environments for an application.
16func (c *Client) ListEnvironments(ctx context.Context, params *ListEnvironmentsInput, optFns ...func(*Options)) (*ListEnvironmentsOutput, error) {
17	if params == nil {
18		params = &ListEnvironmentsInput{}
19	}
20
21	result, metadata, err := c.invokeOperation(ctx, "ListEnvironments", params, optFns, c.addOperationListEnvironmentsMiddlewares)
22	if err != nil {
23		return nil, err
24	}
25
26	out := result.(*ListEnvironmentsOutput)
27	out.ResultMetadata = metadata
28	return out, nil
29}
30
31type ListEnvironmentsInput struct {
32
33	// The application ID.
34	//
35	// This member is required.
36	ApplicationId *string
37
38	// The maximum number of items to return for this call. The call also returns a
39	// token that you can specify in a subsequent call to get the next set of results.
40	MaxResults int32
41
42	// A token to start the list. Use this token to get the next set of results.
43	NextToken *string
44
45	noSmithyDocumentSerde
46}
47
48type ListEnvironmentsOutput struct {
49
50	// The elements from this collection.
51	Items []types.Environment
52
53	// The token for the next set of items to return. Use this token to get the next
54	// set of results.
55	NextToken *string
56
57	// Metadata pertaining to the operation's result.
58	ResultMetadata middleware.Metadata
59
60	noSmithyDocumentSerde
61}
62
63func (c *Client) addOperationListEnvironmentsMiddlewares(stack *middleware.Stack, options Options) (err error) {
64	err = stack.Serialize.Add(&awsRestjson1_serializeOpListEnvironments{}, middleware.After)
65	if err != nil {
66		return err
67	}
68	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListEnvironments{}, middleware.After)
69	if err != nil {
70		return err
71	}
72	if err = addSetLoggerMiddleware(stack, options); err != nil {
73		return err
74	}
75	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
76		return err
77	}
78	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
79		return err
80	}
81	if err = addResolveEndpointMiddleware(stack, options); err != nil {
82		return err
83	}
84	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
85		return err
86	}
87	if err = addRetryMiddlewares(stack, options); err != nil {
88		return err
89	}
90	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
91		return err
92	}
93	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
94		return err
95	}
96	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
97		return err
98	}
99	if err = addClientUserAgent(stack); err != nil {
100		return err
101	}
102	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
103		return err
104	}
105	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
106		return err
107	}
108	if err = addOpListEnvironmentsValidationMiddleware(stack); err != nil {
109		return err
110	}
111	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListEnvironments(options.Region), middleware.Before); err != nil {
112		return err
113	}
114	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
115		return err
116	}
117	if err = addResponseErrorMiddleware(stack); err != nil {
118		return err
119	}
120	if err = addRequestResponseLogging(stack, options); err != nil {
121		return err
122	}
123	return nil
124}
125
126// ListEnvironmentsAPIClient is a client that implements the ListEnvironments
127// operation.
128type ListEnvironmentsAPIClient interface {
129	ListEnvironments(context.Context, *ListEnvironmentsInput, ...func(*Options)) (*ListEnvironmentsOutput, error)
130}
131
132var _ ListEnvironmentsAPIClient = (*Client)(nil)
133
134// ListEnvironmentsPaginatorOptions is the paginator options for ListEnvironments
135type ListEnvironmentsPaginatorOptions struct {
136	// The maximum number of items to return for this call. The call also returns a
137	// token that you can specify in a subsequent call to get the next set of results.
138	Limit int32
139
140	// Set to true if pagination should stop if the service returns a pagination token
141	// that matches the most recent token provided to the service.
142	StopOnDuplicateToken bool
143}
144
145// ListEnvironmentsPaginator is a paginator for ListEnvironments
146type ListEnvironmentsPaginator struct {
147	options   ListEnvironmentsPaginatorOptions
148	client    ListEnvironmentsAPIClient
149	params    *ListEnvironmentsInput
150	nextToken *string
151	firstPage bool
152}
153
154// NewListEnvironmentsPaginator returns a new ListEnvironmentsPaginator
155func NewListEnvironmentsPaginator(client ListEnvironmentsAPIClient, params *ListEnvironmentsInput, optFns ...func(*ListEnvironmentsPaginatorOptions)) *ListEnvironmentsPaginator {
156	if params == nil {
157		params = &ListEnvironmentsInput{}
158	}
159
160	options := ListEnvironmentsPaginatorOptions{}
161	if params.MaxResults != 0 {
162		options.Limit = params.MaxResults
163	}
164
165	for _, fn := range optFns {
166		fn(&options)
167	}
168
169	return &ListEnvironmentsPaginator{
170		options:   options,
171		client:    client,
172		params:    params,
173		firstPage: true,
174	}
175}
176
177// HasMorePages returns a boolean indicating whether more pages are available
178func (p *ListEnvironmentsPaginator) HasMorePages() bool {
179	return p.firstPage || p.nextToken != nil
180}
181
182// NextPage retrieves the next ListEnvironments page.
183func (p *ListEnvironmentsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListEnvironmentsOutput, error) {
184	if !p.HasMorePages() {
185		return nil, fmt.Errorf("no more pages available")
186	}
187
188	params := *p.params
189	params.NextToken = p.nextToken
190
191	params.MaxResults = p.options.Limit
192
193	result, err := p.client.ListEnvironments(ctx, &params, optFns...)
194	if err != nil {
195		return nil, err
196	}
197	p.firstPage = false
198
199	prevToken := p.nextToken
200	p.nextToken = result.NextToken
201
202	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
203		p.nextToken = nil
204	}
205
206	return result, nil
207}
208
209func newServiceMetadataMiddleware_opListEnvironments(region string) *awsmiddleware.RegisterServiceMetadata {
210	return &awsmiddleware.RegisterServiceMetadata{
211		Region:        region,
212		ServiceID:     ServiceID,
213		SigningName:   "appconfig",
214		OperationName: "ListEnvironments",
215	}
216}
217