api_op_ListServices.go

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

package servicediscovery

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/servicediscovery/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Lists summary information for all the services that are associated with one or
// more specified namespaces.
func (c *Client) ListServices(ctx context.Context, params *ListServicesInput, optFns ...func(*Options)) (*ListServicesOutput, error) {
	if params == nil {
		params = &ListServicesInput{}
	}

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

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

type ListServicesInput struct {

	// A complex type that contains specifications for the namespaces that you want to
	// list services for. If you specify more than one filter, an operation must match
	// all filters to be returned by ListServices .
	Filters []types.ServiceFilter

	// The maximum number of services that you want Cloud Map to return in the
	// response to a ListServices request. If you don't specify a value for MaxResults
	// , Cloud Map returns up to 100 services.
	MaxResults *int32

	// For the first ListServices request, omit this value. If the response contains
	// NextToken , submit another ListServices request to get the next group of
	// results. Specify the value of NextToken from the previous response in the next
	// request. Cloud Map gets MaxResults services and then filters them based on the
	// specified criteria. It's possible that no services in the first MaxResults
	// services matched the specified criteria but that subsequent groups of MaxResults
	// services do contain services that match the criteria.
	NextToken *string

	noSmithyDocumentSerde
}

type ListServicesOutput struct {

	// If the response contains NextToken , submit another ListServices request to get
	// the next group of results. Specify the value of NextToken from the previous
	// response in the next request. Cloud Map gets MaxResults services and then
	// filters them based on the specified criteria. It's possible that no services in
	// the first MaxResults services matched the specified criteria but that
	// subsequent groups of MaxResults services do contain services that match the
	// criteria.
	NextToken *string

	// An array that contains one ServiceSummary object for each service that matches
	// the specified filter criteria.
	Services []types.ServiceSummary

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationListServicesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListServices{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListServices{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ListServices"); 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 = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = 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 = addOpListServicesValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListServices(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = 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
}

// ListServicesAPIClient is a client that implements the ListServices operation.
type ListServicesAPIClient interface {
	ListServices(context.Context, *ListServicesInput, ...func(*Options)) (*ListServicesOutput, error)
}

var _ ListServicesAPIClient = (*Client)(nil)

// ListServicesPaginatorOptions is the paginator options for ListServices
type ListServicesPaginatorOptions struct {
	// The maximum number of services that you want Cloud Map to return in the
	// response to a ListServices request. If you don't specify a value for MaxResults
	// , Cloud Map returns up to 100 services.
	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
}

// ListServicesPaginator is a paginator for ListServices
type ListServicesPaginator struct {
	options   ListServicesPaginatorOptions
	client    ListServicesAPIClient
	params    *ListServicesInput
	nextToken *string
	firstPage bool
}

// NewListServicesPaginator returns a new ListServicesPaginator
func NewListServicesPaginator(client ListServicesAPIClient, params *ListServicesInput, optFns ...func(*ListServicesPaginatorOptions)) *ListServicesPaginator {
	if params == nil {
		params = &ListServicesInput{}
	}

	options := ListServicesPaginatorOptions{}
	if params.MaxResults != nil {
		options.Limit = *params.MaxResults
	}

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

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

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

// NextPage retrieves the next ListServices page.
func (p *ListServicesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListServicesOutput, 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.ListServices(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_opListServices(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "ListServices",
	}
}