api_op_ListWorkloads.go

// Code generated by smithy-go-codegen DO NOT EDIT.

package wellarchitected

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/wellarchitected/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Paginated list of workloads.
func (c *Client) ListWorkloads(ctx context.Context, params *ListWorkloadsInput, optFns ...func(*Options)) (*ListWorkloadsOutput, error) {
	if params == nil {
		params = &ListWorkloadsInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "ListWorkloads", params, optFns, c.addOperationListWorkloadsMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*ListWorkloadsOutput)
	out.ResultMetadata = metadata
	return out, nil
}

// Input to list all workloads.
type ListWorkloadsInput struct {

	// The maximum number of results to return for this request.
	MaxResults int32

	// The token to use to retrieve the next set of results.
	NextToken *string

	// An optional string added to the beginning of each workload name returned in the
	// results.
	WorkloadNamePrefix *string

	noSmithyDocumentSerde
}

// Output of a list workloads call.
type ListWorkloadsOutput struct {

	// The token to use to retrieve the next set of results.
	NextToken *string

	// A list of workload summaries.
	WorkloadSummaries []types.WorkloadSummary

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationListWorkloadsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestjson1_serializeOpListWorkloads{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListWorkloads{}, middleware.After)
	if 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 = addHTTPSignerV4Middleware(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); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListWorkloads(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
	}
	return nil
}

// ListWorkloadsAPIClient is a client that implements the ListWorkloads operation.
type ListWorkloadsAPIClient interface {
	ListWorkloads(context.Context, *ListWorkloadsInput, ...func(*Options)) (*ListWorkloadsOutput, error)
}

var _ ListWorkloadsAPIClient = (*Client)(nil)

// ListWorkloadsPaginatorOptions is the paginator options for ListWorkloads
type ListWorkloadsPaginatorOptions struct {
	// The maximum number of results to return for this request.
	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
}

// ListWorkloadsPaginator is a paginator for ListWorkloads
type ListWorkloadsPaginator struct {
	options   ListWorkloadsPaginatorOptions
	client    ListWorkloadsAPIClient
	params    *ListWorkloadsInput
	nextToken *string
	firstPage bool
}

// NewListWorkloadsPaginator returns a new ListWorkloadsPaginator
func NewListWorkloadsPaginator(client ListWorkloadsAPIClient, params *ListWorkloadsInput, optFns ...func(*ListWorkloadsPaginatorOptions)) *ListWorkloadsPaginator {
	if params == nil {
		params = &ListWorkloadsInput{}
	}

	options := ListWorkloadsPaginatorOptions{}
	if params.MaxResults != 0 {
		options.Limit = params.MaxResults
	}

	for _, fn := range optFns {
		fn(&options)
	}

	return &ListWorkloadsPaginator{
		options:   options,
		client:    client,
		params:    params,
		firstPage: true,
		nextToken: params.NextToken,
	}
}

// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListWorkloadsPaginator) HasMorePages() bool {
	return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}

// NextPage retrieves the next ListWorkloads page.
func (p *ListWorkloadsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListWorkloadsOutput, error) {
	if !p.HasMorePages() {
		return nil, fmt.Errorf("no more pages available")
	}

	params := *p.params
	params.NextToken = p.nextToken

	params.MaxResults = p.options.Limit

	result, err := p.client.ListWorkloads(ctx, &params, 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_opListWorkloads(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "wellarchitected",
		OperationName: "ListWorkloads",
	}
}