/
api_op_ListUsers.go
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/
api_op_ListUsers.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package rekognition
import (
"context"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/service/rekognition/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Returns metadata of the User such as UserID in the specified collection.
// Anonymous User (to reserve faces without any identity) is not returned as part
// of this request. The results are sorted by system generated primary key ID. If
// the response is truncated, NextToken is returned in the response that can be
// used in the subsequent request to retrieve the next set of identities.
func (c *Client) ListUsers(ctx context.Context, params *ListUsersInput, optFns ...func(*Options)) (*ListUsersOutput, error) {
if params == nil {
params = &ListUsersInput{}
}
result, metadata, err := c.invokeOperation(ctx, "ListUsers", params, optFns, c.addOperationListUsersMiddlewares)
if err != nil {
return nil, err
}
out := result.(*ListUsersOutput)
out.ResultMetadata = metadata
return out, nil
}
type ListUsersInput struct {
// The ID of an existing collection.
//
// This member is required.
CollectionId *string
// Maximum number of UsersID to return.
MaxResults *int32
// Pagingation token to receive the next set of UsersID.
NextToken *string
noSmithyDocumentSerde
}
type ListUsersOutput struct {
// A pagination token to be used with the subsequent request if the response is
// truncated.
NextToken *string
// List of UsersID associated with the specified collection.
Users []types.User
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationListUsersMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsAwsjson11_serializeOpListUsers{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListUsers{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "ListUsers"); err != nil {
return fmt.Errorf("add protocol finalizers: %v", err)
}
if err = addlegacyEndpointContextSetter(stack, options); err != nil {
return err
}
if err = addSetLoggerMiddleware(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
return err
}
if err = addResolveEndpointMiddleware(stack, options); err != nil {
return err
}
if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
return err
}
if err = addRetryMiddlewares(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
return err
}
if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
return err
}
if err = addClientUserAgent(stack, options); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
return err
}
if err = addOpListUsersValidationMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListUsers(options.Region), middleware.Before); err != nil {
return err
}
if err = awsmiddleware.AddRecursionDetection(stack); err != nil {
return err
}
if err = addRequestIDRetrieverMiddleware(stack); err != nil {
return err
}
if err = addResponseErrorMiddleware(stack); err != nil {
return err
}
if err = addRequestResponseLogging(stack, options); err != nil {
return err
}
if err = addDisableHTTPSMiddleware(stack, options); err != nil {
return err
}
return nil
}
// ListUsersAPIClient is a client that implements the ListUsers operation.
type ListUsersAPIClient interface {
ListUsers(context.Context, *ListUsersInput, ...func(*Options)) (*ListUsersOutput, error)
}
var _ ListUsersAPIClient = (*Client)(nil)
// ListUsersPaginatorOptions is the paginator options for ListUsers
type ListUsersPaginatorOptions struct {
// Maximum number of UsersID to return.
Limit int32
// Set to true if pagination should stop if the service returns a pagination token
// that matches the most recent token provided to the service.
StopOnDuplicateToken bool
}
// ListUsersPaginator is a paginator for ListUsers
type ListUsersPaginator struct {
options ListUsersPaginatorOptions
client ListUsersAPIClient
params *ListUsersInput
nextToken *string
firstPage bool
}
// NewListUsersPaginator returns a new ListUsersPaginator
func NewListUsersPaginator(client ListUsersAPIClient, params *ListUsersInput, optFns ...func(*ListUsersPaginatorOptions)) *ListUsersPaginator {
if params == nil {
params = &ListUsersInput{}
}
options := ListUsersPaginatorOptions{}
if params.MaxResults != nil {
options.Limit = *params.MaxResults
}
for _, fn := range optFns {
fn(&options)
}
return &ListUsersPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListUsersPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next ListUsers page.
func (p *ListUsersPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListUsersOutput, error) {
if !p.HasMorePages() {
return nil, fmt.Errorf("no more pages available")
}
params := *p.params
params.NextToken = p.nextToken
var limit *int32
if p.options.Limit > 0 {
limit = &p.options.Limit
}
params.MaxResults = limit
result, err := p.client.ListUsers(ctx, ¶ms, optFns...)
if err != nil {
return nil, err
}
p.firstPage = false
prevToken := p.nextToken
p.nextToken = result.NextToken
if p.options.StopOnDuplicateToken &&
prevToken != nil &&
p.nextToken != nil &&
*prevToken == *p.nextToken {
p.nextToken = nil
}
return result, nil
}
func newServiceMetadataMiddleware_opListUsers(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "ListUsers",
}
}