object, err := os.Open("my-testfile")
if err != nil {
 log.Fatalln(err)
}
defer object.Close()
objectStat, err := object.Stat()
if err != nil {
 log.Fatalln(err)
}

n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, objectStat.Size(), minio.PutObjectOptions{ContentType: "application/octet-stream", StorageClass: "REDUCED_REDUNDANCY"})
if err != nil {
 log.Fatalln(err)
}

}

// Returns true if input bucket is a reserved minio meta bucket '.minio.sys'.
func isMinioMetaBucket(bucketName string) bool {
	return bucketName == minioMetaBucket
}

// Returns true if input bucket is a reserved minio bucket 'minio'.
func isMinioReservedBucket(bucketName string) bool {
	return bucketName == minioReservedBucket
}

// returns a slice of hosts by reading a slice of DNS records

			prefixName := strings.TrimSuffix(folder.name, "/") + "/"
			sendEvent(eventArgs{
				EventName:  event.PrefixManyFolders,
				BucketName: f.root,
				Object: ObjectInfo{
					Name: prefixName,
					Size: int64(totalFolders),
				},
				UserAgent: "Scanner",
				Host:      globalMinioHost,
			})

			//   permission, Amazon S3 will return an HTTP
			//   status code 403 ("access denied") error.`
			if globalPolicySys.IsAllowed(policy.BucketPolicyArgs{
				Action:          policy.ListBucketAction,
				BucketName:      bucket,
				ConditionValues: getConditionValues(r, "", auth.AnonymousCredentials),
				IsOwner:         false,
			}) {
				_, err = getObjectInfo(ctx, bucket, zipPath, opts)

		dirQuorum: listingQuorum, // make sure to capture all quorum ratios
		objQuorum: listingQuorum, // make sure to capture all quorum ratios
		bucket:    bucketName,
	}

	err := listPathRaw(ctx, listPathRawOptions{
		disks:          disks,
		bucket:         bucketName,
		recursive:      true,
		forwardTo:      "",
		minDisks:       listingQuorum,
		reportNotFound: false,
		agreed:         fn,

## Invoke Lambda transformation via PresignedGET

Following example shows how you can use [`minio-go` PresignedGetObject](https://docs.min.io/community/minio-object-store/developers/go/API.html#presignedgetobject-ctx-context-context-bucketname-objectname-string-expiry-time-duration-reqparams-url-values-url-url-error)
```go
package main

import (
	"context"
	"log"
	"net/url"
	"time"
	"fmt"

	"github.com/minio/minio-go/v7"

	enablePrefixUsage := r.Form.Get("prefix-usage") == "true"

	isAllowedAccess := func(bucketName string) (rd, wr bool) {
		if globalIAMSys.IsAllowed(policy.Args{
			AccountName:     cred.AccessKey,
			Groups:          cred.Groups,
			Action:          policy.ListBucketAction,
			BucketName:      bucketName,
			ConditionValues: getConditionValues(r, "", cred),
			IsOwner:         owner,
			ObjectName:      "",

	return policy, err
}

// IsAllowed - checks given policy args is allowed to continue the Rest API.
func (sys *PolicySys) IsAllowed(args policy.BucketPolicyArgs) bool {
	p, err := sys.Get(args.BucketName)
	if err == nil {
		return p.IsAllowed(args)
	}

	// Log unhandled errors.
	if _, ok := err.(BucketPolicyNotFound); !ok {
		internalLogIf(GlobalContext, err, logger.WarningKind)
	}

type APIErrorResponse struct {
	XMLName          xml.Name `xml:"Error" json:"-"`
	Code             string
	Message          string
	Key              string `xml:"Key,omitempty" json:"Key,omitempty"`
	BucketName       string `xml:"BucketName,omitempty" json:"BucketName,omitempty"`
	Resource         string
	Region           string `xml:"Region,omitempty" json:"Region,omitempty"`
	RequestID        string `xml:"RequestId" json:"RequestId"`

	errBody string, reqURL *url.URL,
) {
	reqInfo := logger.GetReqInfo(ctx)
	errorResponse := APIErrorResponse{
		Code:       err.Code,
		Message:    errBody,
		Resource:   reqURL.Path,
		BucketName: reqInfo.BucketName,
		Key:        reqInfo.ObjectName,
		RequestID:  w.Header().Get(xhttp.AmzRequestID),
		HostID:     globalDeploymentID(),
	}
	encodedErrorResponse := encodeResponseJSON(errorResponse)