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api_op_DescribeListeners.go
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api_op_DescribeListeners.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package elasticloadbalancingv2
import (
"context"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/service/elasticloadbalancingv2/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Describes the specified listeners or the listeners for the specified
// Application Load Balancer, Network Load Balancer, or Gateway Load Balancer. You
// must specify either a load balancer or one or more listeners.
func (c *Client) DescribeListeners(ctx context.Context, params *DescribeListenersInput, optFns ...func(*Options)) (*DescribeListenersOutput, error) {
if params == nil {
params = &DescribeListenersInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeListeners", params, optFns, c.addOperationDescribeListenersMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeListenersOutput)
out.ResultMetadata = metadata
return out, nil
}
type DescribeListenersInput struct {
// The Amazon Resource Names (ARN) of the listeners.
ListenerArns []string
// The Amazon Resource Name (ARN) of the load balancer.
LoadBalancerArn *string
// The marker for the next set of results. (You received this marker from a
// previous call.)
Marker *string
// The maximum number of results to return with this call.
PageSize *int32
noSmithyDocumentSerde
}
type DescribeListenersOutput struct {
// Information about the listeners.
Listeners []types.Listener
// If there are additional results, this is the marker for the next set of
// results. Otherwise, this is null.
NextMarker *string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeListenersMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsAwsquery_serializeOpDescribeListeners{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsAwsquery_deserializeOpDescribeListeners{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "DescribeListeners"); 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 = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeListeners(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
}
// DescribeListenersAPIClient is a client that implements the DescribeListeners
// operation.
type DescribeListenersAPIClient interface {
DescribeListeners(context.Context, *DescribeListenersInput, ...func(*Options)) (*DescribeListenersOutput, error)
}
var _ DescribeListenersAPIClient = (*Client)(nil)
// DescribeListenersPaginatorOptions is the paginator options for DescribeListeners
type DescribeListenersPaginatorOptions struct {
// 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
}
// DescribeListenersPaginator is a paginator for DescribeListeners
type DescribeListenersPaginator struct {
options DescribeListenersPaginatorOptions
client DescribeListenersAPIClient
params *DescribeListenersInput
nextToken *string
firstPage bool
}
// NewDescribeListenersPaginator returns a new DescribeListenersPaginator
func NewDescribeListenersPaginator(client DescribeListenersAPIClient, params *DescribeListenersInput, optFns ...func(*DescribeListenersPaginatorOptions)) *DescribeListenersPaginator {
if params == nil {
params = &DescribeListenersInput{}
}
options := DescribeListenersPaginatorOptions{}
for _, fn := range optFns {
fn(&options)
}
return &DescribeListenersPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.Marker,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *DescribeListenersPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next DescribeListeners page.
func (p *DescribeListenersPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeListenersOutput, error) {
if !p.HasMorePages() {
return nil, fmt.Errorf("no more pages available")
}
params := *p.params
params.Marker = p.nextToken
result, err := p.client.DescribeListeners(ctx, ¶ms, optFns...)
if err != nil {
return nil, err
}
p.firstPage = false
prevToken := p.nextToken
p.nextToken = result.NextMarker
if p.options.StopOnDuplicateToken &&
prevToken != nil &&
p.nextToken != nil &&
*prevToken == *p.nextToken {
p.nextToken = nil
}
return result, nil
}
func newServiceMetadataMiddleware_opDescribeListeners(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "DescribeListeners",
}
}