/
api_op_HeadBucket.go
675 lines (587 loc) · 24.8 KB
/
api_op_HeadBucket.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package s3
import (
"context"
"errors"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
s3cust "github.com/aws/aws-sdk-go-v2/service/s3/internal/customizations"
"github.com/aws/aws-sdk-go-v2/service/s3/types"
"github.com/aws/smithy-go/middleware"
smithytime "github.com/aws/smithy-go/time"
smithyhttp "github.com/aws/smithy-go/transport/http"
smithywaiter "github.com/aws/smithy-go/waiter"
"time"
)
// You can use this operation to determine if a bucket exists and if you have
// permission to access it. The action returns a 200 OK if the bucket exists and
// you have permission to access it.
//
// If the bucket does not exist or you do not have permission to access it, the
// HEAD request returns a generic 400 Bad Request , 403 Forbidden or 404 Not Found
// code. A message body is not included, so you cannot determine the exception
// beyond these HTTP response codes.
//
// Directory buckets - You must make requests for this API operation to the Zonal
// endpoint. These endpoints support virtual-hosted-style requests in the format
// https://bucket_name.s3express-az_id.region.amazonaws.com . Path-style requests
// are not supported. For more information, see [Regional and Zonal endpoints]in the Amazon S3 User Guide.
//
// Authentication and authorization All HeadBucket requests must be authenticated
// and signed by using IAM credentials (access key ID and secret access key for the
// IAM identities). All headers with the x-amz- prefix, including x-amz-copy-source
// , must be signed. For more information, see [REST Authentication].
//
// Directory bucket - You must use IAM credentials to authenticate and authorize
// your access to the HeadBucket API operation, instead of using the temporary
// security credentials through the CreateSession API operation.
//
// Amazon Web Services CLI or SDKs handles authentication and authorization on
// your behalf.
//
// Permissions
//
// - General purpose bucket permissions - To use this operation, you must have
// permissions to perform the s3:ListBucket action. The bucket owner has this
// permission by default and can grant this permission to others. For more
// information about permissions, see [Managing access permissions to your Amazon S3 resources]in the Amazon S3 User Guide.
//
// - Directory bucket permissions - You must have the s3express:CreateSession
// permission in the Action element of a policy. By default, the session is in
// the ReadWrite mode. If you want to restrict the access, you can explicitly set
// the s3express:SessionMode condition key to ReadOnly on the bucket.
//
// For more information about example bucket policies, see [Example bucket policies for S3 Express One Zone]and [Amazon Web Services Identity and Access Management (IAM) identity-based policies for S3 Express One Zone]in the Amazon S3
//
// User Guide.
//
// HTTP Host header syntax Directory buckets - The HTTP Host header syntax is
// Bucket_name.s3express-az_id.region.amazonaws.com .
//
// [Amazon Web Services Identity and Access Management (IAM) identity-based policies for S3 Express One Zone]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-security-iam-identity-policies.html
// [REST Authentication]: https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html
// [Example bucket policies for S3 Express One Zone]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-security-iam-example-bucket-policies.html
// [Regional and Zonal endpoints]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-Regions-and-Zones.html
// [Managing access permissions to your Amazon S3 resources]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-access-control.html
func (c *Client) HeadBucket(ctx context.Context, params *HeadBucketInput, optFns ...func(*Options)) (*HeadBucketOutput, error) {
if params == nil {
params = &HeadBucketInput{}
}
result, metadata, err := c.invokeOperation(ctx, "HeadBucket", params, optFns, c.addOperationHeadBucketMiddlewares)
if err != nil {
return nil, err
}
out := result.(*HeadBucketOutput)
out.ResultMetadata = metadata
return out, nil
}
type HeadBucketInput struct {
// The bucket name.
//
// Directory buckets - When you use this operation with a directory bucket, you
// must use virtual-hosted-style requests in the format
// Bucket_name.s3express-az_id.region.amazonaws.com . Path-style requests are not
// supported. Directory bucket names must be unique in the chosen Availability
// Zone. Bucket names must follow the format bucket_base_name--az-id--x-s3 (for
// example, DOC-EXAMPLE-BUCKET--usw2-az1--x-s3 ). For information about bucket
// naming restrictions, see [Directory bucket naming rules]in the Amazon S3 User Guide.
//
// Access points - When you use this action with an access point, you must provide
// the alias of the access point in place of the bucket name or specify the access
// point ARN. When using the access point ARN, you must direct requests to the
// access point hostname. The access point hostname takes the form
// AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this
// action with an access point through the Amazon Web Services SDKs, you provide
// the access point ARN in place of the bucket name. For more information about
// access point ARNs, see [Using access points]in the Amazon S3 User Guide.
//
// Object Lambda access points - When you use this API operation with an Object
// Lambda access point, provide the alias of the Object Lambda access point in
// place of the bucket name. If the Object Lambda access point alias in a request
// is not valid, the error code InvalidAccessPointAliasError is returned. For more
// information about InvalidAccessPointAliasError , see [List of Error Codes].
//
// Access points and Object Lambda access points are not supported by directory
// buckets.
//
// S3 on Outposts - When you use this action with Amazon S3 on Outposts, you must
// direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname
// takes the form
// AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com . When you
// use this action with S3 on Outposts through the Amazon Web Services SDKs, you
// provide the Outposts access point ARN in place of the bucket name. For more
// information about S3 on Outposts ARNs, see [What is S3 on Outposts?]in the Amazon S3 User Guide.
//
// [Directory bucket naming rules]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html
// [What is S3 on Outposts?]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html
// [Using access points]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html
// [List of Error Codes]: https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html#ErrorCodeList
//
// This member is required.
Bucket *string
// The account ID of the expected bucket owner. If the account ID that you provide
// does not match the actual owner of the bucket, the request fails with the HTTP
// status code 403 Forbidden (access denied).
ExpectedBucketOwner *string
noSmithyDocumentSerde
}
func (in *HeadBucketInput) bindEndpointParams(p *EndpointParameters) {
p.Bucket = in.Bucket
}
type HeadBucketOutput struct {
// Indicates whether the bucket name used in the request is an access point alias.
//
// This functionality is not supported for directory buckets.
AccessPointAlias *bool
// The name of the location where the bucket will be created.
//
// For directory buckets, the AZ ID of the Availability Zone where the bucket is
// created. An example AZ ID value is usw2-az1 .
//
// This functionality is only supported by directory buckets.
BucketLocationName *string
// The type of location where the bucket is created.
//
// This functionality is only supported by directory buckets.
BucketLocationType types.LocationType
// The Region that the bucket is located.
//
// This functionality is not supported for directory buckets.
BucketRegion *string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationHeadBucketMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsRestxml_serializeOpHeadBucket{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsRestxml_deserializeOpHeadBucket{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "HeadBucket"); 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 = addPutBucketContextMiddleware(stack); err != nil {
return err
}
if err = addOpHeadBucketValidationMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opHeadBucket(options.Region), middleware.Before); err != nil {
return err
}
if err = addMetadataRetrieverMiddleware(stack); err != nil {
return err
}
if err = addRecursionDetection(stack); err != nil {
return err
}
if err = addHeadBucketUpdateEndpoint(stack, options); err != nil {
return err
}
if err = addResponseErrorMiddleware(stack); err != nil {
return err
}
if err = v4.AddContentSHA256HeaderMiddleware(stack); err != nil {
return err
}
if err = disableAcceptEncodingGzip(stack); err != nil {
return err
}
if err = addRequestResponseLogging(stack, options); err != nil {
return err
}
if err = addDisableHTTPSMiddleware(stack, options); err != nil {
return err
}
if err = addSerializeImmutableHostnameBucketMiddleware(stack, options); err != nil {
return err
}
return nil
}
func (v *HeadBucketInput) bucket() (string, bool) {
if v.Bucket == nil {
return "", false
}
return *v.Bucket, true
}
// HeadBucketAPIClient is a client that implements the HeadBucket operation.
type HeadBucketAPIClient interface {
HeadBucket(context.Context, *HeadBucketInput, ...func(*Options)) (*HeadBucketOutput, error)
}
var _ HeadBucketAPIClient = (*Client)(nil)
// BucketExistsWaiterOptions are waiter options for BucketExistsWaiter
type BucketExistsWaiterOptions struct {
// Set of options to modify how an operation is invoked. These apply to all
// operations invoked for this client. Use functional options on operation call to
// modify this list for per operation behavior.
//
// Passing options here is functionally equivalent to passing values to this
// config's ClientOptions field that extend the inner client's APIOptions directly.
APIOptions []func(*middleware.Stack) error
// Functional options to be passed to all operations invoked by this client.
//
// Function values that modify the inner APIOptions are applied after the waiter
// config's own APIOptions modifiers.
ClientOptions []func(*Options)
// MinDelay is the minimum amount of time to delay between retries. If unset,
// BucketExistsWaiter will use default minimum delay of 5 seconds. Note that
// MinDelay must resolve to a value lesser than or equal to the MaxDelay.
MinDelay time.Duration
// MaxDelay is the maximum amount of time to delay between retries. If unset or
// set to zero, BucketExistsWaiter will use default max delay of 120 seconds. Note
// that MaxDelay must resolve to value greater than or equal to the MinDelay.
MaxDelay time.Duration
// LogWaitAttempts is used to enable logging for waiter retry attempts
LogWaitAttempts bool
// Retryable is function that can be used to override the service defined
// waiter-behavior based on operation output, or returned error. This function is
// used by the waiter to decide if a state is retryable or a terminal state.
//
// By default service-modeled logic will populate this option. This option can
// thus be used to define a custom waiter state with fall-back to service-modeled
// waiter state mutators.The function returns an error in case of a failure state.
// In case of retry state, this function returns a bool value of true and nil
// error, while in case of success it returns a bool value of false and nil error.
Retryable func(context.Context, *HeadBucketInput, *HeadBucketOutput, error) (bool, error)
}
// BucketExistsWaiter defines the waiters for BucketExists
type BucketExistsWaiter struct {
client HeadBucketAPIClient
options BucketExistsWaiterOptions
}
// NewBucketExistsWaiter constructs a BucketExistsWaiter.
func NewBucketExistsWaiter(client HeadBucketAPIClient, optFns ...func(*BucketExistsWaiterOptions)) *BucketExistsWaiter {
options := BucketExistsWaiterOptions{}
options.MinDelay = 5 * time.Second
options.MaxDelay = 120 * time.Second
options.Retryable = bucketExistsStateRetryable
for _, fn := range optFns {
fn(&options)
}
return &BucketExistsWaiter{
client: client,
options: options,
}
}
// Wait calls the waiter function for BucketExists waiter. The maxWaitDur is the
// maximum wait duration the waiter will wait. The maxWaitDur is required and must
// be greater than zero.
func (w *BucketExistsWaiter) Wait(ctx context.Context, params *HeadBucketInput, maxWaitDur time.Duration, optFns ...func(*BucketExistsWaiterOptions)) error {
_, err := w.WaitForOutput(ctx, params, maxWaitDur, optFns...)
return err
}
// WaitForOutput calls the waiter function for BucketExists waiter and returns the
// output of the successful operation. The maxWaitDur is the maximum wait duration
// the waiter will wait. The maxWaitDur is required and must be greater than zero.
func (w *BucketExistsWaiter) WaitForOutput(ctx context.Context, params *HeadBucketInput, maxWaitDur time.Duration, optFns ...func(*BucketExistsWaiterOptions)) (*HeadBucketOutput, error) {
if maxWaitDur <= 0 {
return nil, fmt.Errorf("maximum wait time for waiter must be greater than zero")
}
options := w.options
for _, fn := range optFns {
fn(&options)
}
if options.MaxDelay <= 0 {
options.MaxDelay = 120 * time.Second
}
if options.MinDelay > options.MaxDelay {
return nil, fmt.Errorf("minimum waiter delay %v must be lesser than or equal to maximum waiter delay of %v.", options.MinDelay, options.MaxDelay)
}
ctx, cancelFn := context.WithTimeout(ctx, maxWaitDur)
defer cancelFn()
logger := smithywaiter.Logger{}
remainingTime := maxWaitDur
var attempt int64
for {
attempt++
apiOptions := options.APIOptions
start := time.Now()
if options.LogWaitAttempts {
logger.Attempt = attempt
apiOptions = append([]func(*middleware.Stack) error{}, options.APIOptions...)
apiOptions = append(apiOptions, logger.AddLogger)
}
out, err := w.client.HeadBucket(ctx, params, func(o *Options) {
o.APIOptions = append(o.APIOptions, apiOptions...)
for _, opt := range options.ClientOptions {
opt(o)
}
})
retryable, err := options.Retryable(ctx, params, out, err)
if err != nil {
return nil, err
}
if !retryable {
return out, nil
}
remainingTime -= time.Since(start)
if remainingTime < options.MinDelay || remainingTime <= 0 {
break
}
// compute exponential backoff between waiter retries
delay, err := smithywaiter.ComputeDelay(
attempt, options.MinDelay, options.MaxDelay, remainingTime,
)
if err != nil {
return nil, fmt.Errorf("error computing waiter delay, %w", err)
}
remainingTime -= delay
// sleep for the delay amount before invoking a request
if err := smithytime.SleepWithContext(ctx, delay); err != nil {
return nil, fmt.Errorf("request cancelled while waiting, %w", err)
}
}
return nil, fmt.Errorf("exceeded max wait time for BucketExists waiter")
}
func bucketExistsStateRetryable(ctx context.Context, input *HeadBucketInput, output *HeadBucketOutput, err error) (bool, error) {
if err == nil {
return false, nil
}
if err != nil {
var errorType *types.NotFound
if errors.As(err, &errorType) {
return true, nil
}
}
return true, nil
}
// BucketNotExistsWaiterOptions are waiter options for BucketNotExistsWaiter
type BucketNotExistsWaiterOptions struct {
// Set of options to modify how an operation is invoked. These apply to all
// operations invoked for this client. Use functional options on operation call to
// modify this list for per operation behavior.
//
// Passing options here is functionally equivalent to passing values to this
// config's ClientOptions field that extend the inner client's APIOptions directly.
APIOptions []func(*middleware.Stack) error
// Functional options to be passed to all operations invoked by this client.
//
// Function values that modify the inner APIOptions are applied after the waiter
// config's own APIOptions modifiers.
ClientOptions []func(*Options)
// MinDelay is the minimum amount of time to delay between retries. If unset,
// BucketNotExistsWaiter will use default minimum delay of 5 seconds. Note that
// MinDelay must resolve to a value lesser than or equal to the MaxDelay.
MinDelay time.Duration
// MaxDelay is the maximum amount of time to delay between retries. If unset or
// set to zero, BucketNotExistsWaiter will use default max delay of 120 seconds.
// Note that MaxDelay must resolve to value greater than or equal to the MinDelay.
MaxDelay time.Duration
// LogWaitAttempts is used to enable logging for waiter retry attempts
LogWaitAttempts bool
// Retryable is function that can be used to override the service defined
// waiter-behavior based on operation output, or returned error. This function is
// used by the waiter to decide if a state is retryable or a terminal state.
//
// By default service-modeled logic will populate this option. This option can
// thus be used to define a custom waiter state with fall-back to service-modeled
// waiter state mutators.The function returns an error in case of a failure state.
// In case of retry state, this function returns a bool value of true and nil
// error, while in case of success it returns a bool value of false and nil error.
Retryable func(context.Context, *HeadBucketInput, *HeadBucketOutput, error) (bool, error)
}
// BucketNotExistsWaiter defines the waiters for BucketNotExists
type BucketNotExistsWaiter struct {
client HeadBucketAPIClient
options BucketNotExistsWaiterOptions
}
// NewBucketNotExistsWaiter constructs a BucketNotExistsWaiter.
func NewBucketNotExistsWaiter(client HeadBucketAPIClient, optFns ...func(*BucketNotExistsWaiterOptions)) *BucketNotExistsWaiter {
options := BucketNotExistsWaiterOptions{}
options.MinDelay = 5 * time.Second
options.MaxDelay = 120 * time.Second
options.Retryable = bucketNotExistsStateRetryable
for _, fn := range optFns {
fn(&options)
}
return &BucketNotExistsWaiter{
client: client,
options: options,
}
}
// Wait calls the waiter function for BucketNotExists waiter. The maxWaitDur is
// the maximum wait duration the waiter will wait. The maxWaitDur is required and
// must be greater than zero.
func (w *BucketNotExistsWaiter) Wait(ctx context.Context, params *HeadBucketInput, maxWaitDur time.Duration, optFns ...func(*BucketNotExistsWaiterOptions)) error {
_, err := w.WaitForOutput(ctx, params, maxWaitDur, optFns...)
return err
}
// WaitForOutput calls the waiter function for BucketNotExists waiter and returns
// the output of the successful operation. The maxWaitDur is the maximum wait
// duration the waiter will wait. The maxWaitDur is required and must be greater
// than zero.
func (w *BucketNotExistsWaiter) WaitForOutput(ctx context.Context, params *HeadBucketInput, maxWaitDur time.Duration, optFns ...func(*BucketNotExistsWaiterOptions)) (*HeadBucketOutput, error) {
if maxWaitDur <= 0 {
return nil, fmt.Errorf("maximum wait time for waiter must be greater than zero")
}
options := w.options
for _, fn := range optFns {
fn(&options)
}
if options.MaxDelay <= 0 {
options.MaxDelay = 120 * time.Second
}
if options.MinDelay > options.MaxDelay {
return nil, fmt.Errorf("minimum waiter delay %v must be lesser than or equal to maximum waiter delay of %v.", options.MinDelay, options.MaxDelay)
}
ctx, cancelFn := context.WithTimeout(ctx, maxWaitDur)
defer cancelFn()
logger := smithywaiter.Logger{}
remainingTime := maxWaitDur
var attempt int64
for {
attempt++
apiOptions := options.APIOptions
start := time.Now()
if options.LogWaitAttempts {
logger.Attempt = attempt
apiOptions = append([]func(*middleware.Stack) error{}, options.APIOptions...)
apiOptions = append(apiOptions, logger.AddLogger)
}
out, err := w.client.HeadBucket(ctx, params, func(o *Options) {
o.APIOptions = append(o.APIOptions, apiOptions...)
for _, opt := range options.ClientOptions {
opt(o)
}
})
retryable, err := options.Retryable(ctx, params, out, err)
if err != nil {
return nil, err
}
if !retryable {
return out, nil
}
remainingTime -= time.Since(start)
if remainingTime < options.MinDelay || remainingTime <= 0 {
break
}
// compute exponential backoff between waiter retries
delay, err := smithywaiter.ComputeDelay(
attempt, options.MinDelay, options.MaxDelay, remainingTime,
)
if err != nil {
return nil, fmt.Errorf("error computing waiter delay, %w", err)
}
remainingTime -= delay
// sleep for the delay amount before invoking a request
if err := smithytime.SleepWithContext(ctx, delay); err != nil {
return nil, fmt.Errorf("request cancelled while waiting, %w", err)
}
}
return nil, fmt.Errorf("exceeded max wait time for BucketNotExists waiter")
}
func bucketNotExistsStateRetryable(ctx context.Context, input *HeadBucketInput, output *HeadBucketOutput, err error) (bool, error) {
if err != nil {
var errorType *types.NotFound
if errors.As(err, &errorType) {
return false, nil
}
}
return true, nil
}
func newServiceMetadataMiddleware_opHeadBucket(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "HeadBucket",
}
}
// getHeadBucketBucketMember returns a pointer to string denoting a provided
// bucket member valueand a boolean indicating if the input has a modeled bucket
// name,
func getHeadBucketBucketMember(input interface{}) (*string, bool) {
in := input.(*HeadBucketInput)
if in.Bucket == nil {
return nil, false
}
return in.Bucket, true
}
func addHeadBucketUpdateEndpoint(stack *middleware.Stack, options Options) error {
return s3cust.UpdateEndpoint(stack, s3cust.UpdateEndpointOptions{
Accessor: s3cust.UpdateEndpointParameterAccessor{
GetBucketFromInput: getHeadBucketBucketMember,
},
UsePathStyle: options.UsePathStyle,
UseAccelerate: options.UseAccelerate,
SupportsAccelerate: true,
TargetS3ObjectLambda: false,
EndpointResolver: options.EndpointResolver,
EndpointResolverOptions: options.EndpointOptions,
UseARNRegion: options.UseARNRegion,
DisableMultiRegionAccessPoints: options.DisableMultiRegionAccessPoints,
})
}
// PresignHeadBucket is used to generate a presigned HTTP Request which contains
// presigned URL, signed headers and HTTP method used.
func (c *PresignClient) PresignHeadBucket(ctx context.Context, params *HeadBucketInput, optFns ...func(*PresignOptions)) (*v4.PresignedHTTPRequest, error) {
if params == nil {
params = &HeadBucketInput{}
}
options := c.options.copy()
for _, fn := range optFns {
fn(&options)
}
clientOptFns := append(options.ClientOptions, withNopHTTPClientAPIOption)
result, _, err := c.client.invokeOperation(ctx, "HeadBucket", params, clientOptFns,
c.client.addOperationHeadBucketMiddlewares,
presignConverter(options).convertToPresignMiddleware,
addHeadBucketPayloadAsUnsigned,
)
if err != nil {
return nil, err
}
out := result.(*v4.PresignedHTTPRequest)
return out, nil
}
func addHeadBucketPayloadAsUnsigned(stack *middleware.Stack, options Options) error {
v4.RemoveContentSHA256HeaderMiddleware(stack)
v4.RemoveComputePayloadSHA256Middleware(stack)
return v4.AddUnsignedPayloadMiddleware(stack)
}