Source File
	accesspoint_arn.go

Belonging Package
	github.com/aws/aws-sdk-go-v2/service/internal/s3shared/arn

package arn

import (
	"strings"

	"github.com/aws/aws-sdk-go-v2/aws/arn"
)

// AccessPointARN provides representation
type AccessPointARN struct {
	arn.ARN
	AccessPointName string
}

// GetARN returns the base ARN for the Access Point resource
func (a AccessPointARN) GetARN() arn.ARN {
	return a.ARN
}

// ParseAccessPointResource attempts to parse the ARN's resource as an
// AccessPoint resource.
//
// Supported Access point resource format:
//   - Access point format: arn:{partition}:s3:{region}:{accountId}:accesspoint/{accesspointName}
//   - example: arn:aws:s3:us-west-2:012345678901:accesspoint/myaccesspoint
func ParseAccessPointResource(a arn.ARN, resParts []string) (AccessPointARN, error) {
	if isFIPS(a.Region) {
		return AccessPointARN{}, InvalidARNError{ARN: a, Reason: "FIPS region not allowed in ARN"}
	}
	if len(a.AccountID) == 0 {
		return AccessPointARN{}, InvalidARNError{ARN: a, Reason: "account-id not set"}
	}
	if len(resParts) == 0 {
		return AccessPointARN{}, InvalidARNError{ARN: a, Reason: "resource-id not set"}
	}
	if len(resParts) > 1 {
		return AccessPointARN{}, InvalidARNError{ARN: a, Reason: "sub resource not supported"}
	}

	resID := resParts[0]
	if len(strings.TrimSpace(resID)) == 0 {
		return AccessPointARN{}, InvalidARNError{ARN: a, Reason: "resource-id not set"}
	}

	return AccessPointARN{
		ARN:             a,
		AccessPointName: resID,
	}, nil
}

func isFIPS(region string) bool {
	return strings.HasPrefix(region, "fips-") || strings.HasSuffix(region, "-fips")
}

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