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api_op_DescribeHosts.go
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api_op_DescribeHosts.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package ec2
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/ec2/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Describes the specified Dedicated Hosts or all your Dedicated Hosts. The results
// describe only the Dedicated Hosts in the Region you're currently using. All
// listed instances consume capacity on your Dedicated Host. Dedicated Hosts that
// have recently been released are listed with the state released.
func (c *Client) DescribeHosts(ctx context.Context, params *DescribeHostsInput, optFns ...func(*Options)) (*DescribeHostsOutput, error) {
if params == nil {
params = &DescribeHostsInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeHosts", params, optFns, c.addOperationDescribeHostsMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeHostsOutput)
out.ResultMetadata = metadata
return out, nil
}
type DescribeHostsInput struct {
// The filters.
//
// * auto-placement - Whether auto-placement is enabled or disabled
// (on | off).
//
// * availability-zone - The Availability Zone of the host.
//
// *
// client-token - The idempotency token that you provided when you allocated the
// host.
//
// * host-reservation-id - The ID of the reservation assigned to this
// host.
//
// * instance-type - The instance type size that the Dedicated Host is
// configured to support.
//
// * state - The allocation state of the Dedicated Host
// (available | under-assessment | permanent-failure | released |
// released-permanent-failure).
//
// * tag-key - The key of a tag assigned to the
// resource. Use this filter to find all resources assigned a tag with a specific
// key, regardless of the tag value.
Filter []types.Filter
// The IDs of the Dedicated Hosts. The IDs are used for targeted instance launches.
HostIds []string
// The maximum number of results to return for the request in a single page. The
// remaining results can be seen by sending another request with the returned
// nextToken value. This value can be between 5 and 500. If maxResults is given a
// larger value than 500, you receive an error. You cannot specify this parameter
// and the host IDs parameter in the same request.
MaxResults *int32
// The token to use to retrieve the next page of results.
NextToken *string
noSmithyDocumentSerde
}
type DescribeHostsOutput struct {
// Information about the Dedicated Hosts.
Hosts []types.Host
// The token to use to retrieve the next page of results. This value is null when
// there are no more results to return.
NextToken *string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeHostsMiddlewares(stack *middleware.Stack, options Options) (err error) {
err = stack.Serialize.Add(&awsEc2query_serializeOpDescribeHosts{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsEc2query_deserializeOpDescribeHosts{}, 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_opDescribeHosts(options.Region), middleware.Before); 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
}
// DescribeHostsAPIClient is a client that implements the DescribeHosts operation.
type DescribeHostsAPIClient interface {
DescribeHosts(context.Context, *DescribeHostsInput, ...func(*Options)) (*DescribeHostsOutput, error)
}
var _ DescribeHostsAPIClient = (*Client)(nil)
// DescribeHostsPaginatorOptions is the paginator options for DescribeHosts
type DescribeHostsPaginatorOptions struct {
// The maximum number of results to return for the request in a single page. The
// remaining results can be seen by sending another request with the returned
// nextToken value. This value can be between 5 and 500. If maxResults is given a
// larger value than 500, you receive an error. You cannot specify this parameter
// and the host IDs parameter in the same 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
}
// DescribeHostsPaginator is a paginator for DescribeHosts
type DescribeHostsPaginator struct {
options DescribeHostsPaginatorOptions
client DescribeHostsAPIClient
params *DescribeHostsInput
nextToken *string
firstPage bool
}
// NewDescribeHostsPaginator returns a new DescribeHostsPaginator
func NewDescribeHostsPaginator(client DescribeHostsAPIClient, params *DescribeHostsInput, optFns ...func(*DescribeHostsPaginatorOptions)) *DescribeHostsPaginator {
if params == nil {
params = &DescribeHostsInput{}
}
options := DescribeHostsPaginatorOptions{}
if params.MaxResults != nil {
options.Limit = *params.MaxResults
}
for _, fn := range optFns {
fn(&options)
}
return &DescribeHostsPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *DescribeHostsPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next DescribeHosts page.
func (p *DescribeHostsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeHostsOutput, 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.DescribeHosts(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_opDescribeHosts(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
SigningName: "ec2",
OperationName: "DescribeHosts",
}
}