1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package schemas
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/schemas/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// List the schemas.
16func (c *Client) ListSchemas(ctx context.Context, params *ListSchemasInput, optFns ...func(*Options)) (*ListSchemasOutput, error) {
17	if params == nil {
18		params = &ListSchemasInput{}
19	}
20
21	result, metadata, err := c.invokeOperation(ctx, "ListSchemas", params, optFns, addOperationListSchemasMiddlewares)
22	if err != nil {
23		return nil, err
24	}
25
26	out := result.(*ListSchemasOutput)
27	out.ResultMetadata = metadata
28	return out, nil
29}
30
31type ListSchemasInput struct {
32
33	// The name of the registry.
34	//
35	// This member is required.
36	RegistryName *string
37
38	Limit int32
39
40	// The token that specifies the next page of results to return. To request the
41	// first page, leave NextToken empty. The token will expire in 24 hours, and cannot
42	// be shared with other accounts.
43	NextToken *string
44
45	// Specifying this limits the results to only those schema names that start with
46	// the specified prefix.
47	SchemaNamePrefix *string
48}
49
50type ListSchemasOutput struct {
51
52	// The token that specifies the next page of results to return. To request the
53	// first page, leave NextToken empty. The token will expire in 24 hours, and cannot
54	// be shared with other accounts.
55	NextToken *string
56
57	// An array of schema summaries.
58	Schemas []types.SchemaSummary
59
60	// Metadata pertaining to the operation's result.
61	ResultMetadata middleware.Metadata
62}
63
64func addOperationListSchemasMiddlewares(stack *middleware.Stack, options Options) (err error) {
65	err = stack.Serialize.Add(&awsRestjson1_serializeOpListSchemas{}, middleware.After)
66	if err != nil {
67		return err
68	}
69	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListSchemas{}, 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 = addOpListSchemasValidationMiddleware(stack); err != nil {
110		return err
111	}
112	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListSchemas(options.Region), middleware.Before); err != nil {
113		return err
114	}
115	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
116		return err
117	}
118	if err = addResponseErrorMiddleware(stack); err != nil {
119		return err
120	}
121	if err = addRequestResponseLogging(stack, options); err != nil {
122		return err
123	}
124	return nil
125}
126
127// ListSchemasAPIClient is a client that implements the ListSchemas operation.
128type ListSchemasAPIClient interface {
129	ListSchemas(context.Context, *ListSchemasInput, ...func(*Options)) (*ListSchemasOutput, error)
130}
131
132var _ ListSchemasAPIClient = (*Client)(nil)
133
134// ListSchemasPaginatorOptions is the paginator options for ListSchemas
135type ListSchemasPaginatorOptions struct {
136	Limit int32
137
138	// Set to true if pagination should stop if the service returns a pagination token
139	// that matches the most recent token provided to the service.
140	StopOnDuplicateToken bool
141}
142
143// ListSchemasPaginator is a paginator for ListSchemas
144type ListSchemasPaginator struct {
145	options   ListSchemasPaginatorOptions
146	client    ListSchemasAPIClient
147	params    *ListSchemasInput
148	nextToken *string
149	firstPage bool
150}
151
152// NewListSchemasPaginator returns a new ListSchemasPaginator
153func NewListSchemasPaginator(client ListSchemasAPIClient, params *ListSchemasInput, optFns ...func(*ListSchemasPaginatorOptions)) *ListSchemasPaginator {
154	if params == nil {
155		params = &ListSchemasInput{}
156	}
157
158	options := ListSchemasPaginatorOptions{}
159	if params.Limit != 0 {
160		options.Limit = params.Limit
161	}
162
163	for _, fn := range optFns {
164		fn(&options)
165	}
166
167	return &ListSchemasPaginator{
168		options:   options,
169		client:    client,
170		params:    params,
171		firstPage: true,
172	}
173}
174
175// HasMorePages returns a boolean indicating whether more pages are available
176func (p *ListSchemasPaginator) HasMorePages() bool {
177	return p.firstPage || p.nextToken != nil
178}
179
180// NextPage retrieves the next ListSchemas page.
181func (p *ListSchemasPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListSchemasOutput, error) {
182	if !p.HasMorePages() {
183		return nil, fmt.Errorf("no more pages available")
184	}
185
186	params := *p.params
187	params.NextToken = p.nextToken
188
189	params.Limit = p.options.Limit
190
191	result, err := p.client.ListSchemas(ctx, &params, optFns...)
192	if err != nil {
193		return nil, err
194	}
195	p.firstPage = false
196
197	prevToken := p.nextToken
198	p.nextToken = result.NextToken
199
200	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
201		p.nextToken = nil
202	}
203
204	return result, nil
205}
206
207func newServiceMetadataMiddleware_opListSchemas(region string) *awsmiddleware.RegisterServiceMetadata {
208	return &awsmiddleware.RegisterServiceMetadata{
209		Region:        region,
210		ServiceID:     ServiceID,
211		SigningName:   "schemas",
212		OperationName: "ListSchemas",
213	}
214}
215