func TestIsErrIgnored(t *testing.T) {
	errIgnored := fmt.Errorf("ignored error")
	testCases := []struct {
		err     error
		ignored bool
	}{
		{
			err:     nil,
			ignored: false,
		},
		{
			err:     errIgnored,
			ignored: true,
		},
		{
			err:     errFaultyDisk,
			ignored: true,
		},
	}
	for i, testCase := range testCases {

	if logIgnoreError(err) {
		return
	}
	for _, ignore := range ignored {
		if errors.Is(err, ignore) {
			return
		}
	}
	logIf(ctx, subsystem, err)
}

func errToEntry(ctx context.Context, subsystem string, err error, errKind ...interface{}) log.Entry {
	var l string
	if anonFlag {
		l = reflect.TypeOf(err).String()
	} else {
		l = fmt.Sprintf("%v (%T)", err, err)
	}

// functionality to handle SSE-C copy requests.
var SSECopy = ssecCopy{}

type ssecCopy struct{}

// IsRequested returns true if the HTTP headers contains
// at least one SSE-C copy header. Regular SSE-C headers
// are ignored.
func (ssecCopy) IsRequested(h http.Header) bool {
	if _, ok := h[xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm]; ok {
		return true
	}
	if _, ok := h[xhttp.AmzServerSideEncryptionCopyCustomerKey]; ok {
		return true

// domain is "SSE-C".
func (ssec) String() string { return "SSE-C" }

// IsRequested returns true if the HTTP headers contains
// at least one SSE-C header. SSE-C copy headers are ignored.
func (ssec) IsRequested(h http.Header) bool {
	if _, ok := h[xhttp.AmzServerSideEncryptionCustomerAlgorithm]; ok {
		return true
	}
	if _, ok := h[xhttp.AmzServerSideEncryptionCustomerKey]; ok {
		return true
	}

				// It got deleted in the meantime, not found
				// or returns too many symlinks ignore this
				// file/directory.
				if osIsNotExist(err) || isSysErrPathNotFound(err) ||
					isSysErrTooManySymlinks(err) {
					continue
				}
				return nil, err
			}

			if !opts.followDirSymlink && fi.IsDir() {
				// directory symlinks are ignored.
				continue
			}

			}
		}
		delete(checkHeader, formCanonicalName)
	}
	// For SignV2 - Signature field will be ignored
	// Policy is generated from Signature with other fields, so it should be ignored
	if _, ok := formValues[xhttp.AmzSignatureV2]; ok {
		delete(checkHeader, xhttp.AmzSignatureV2)
	}

	if len(checkHeader) != 0 {

		Multipart: must("9a0d1febd9265f59f368ceb652770bc2-3"),
	},
	{ // Check that multipart ETags are ignored
		ETags:     []ETag{must("5f363e0e58a95f06cbe9bbc662c5dfb6"), must("5f363e0e58a95f06cbe9bbc662c5dfb6"), must("ceb8853ddc5086cc4ab9e149f8f09c88-1")},
		Multipart: must("a7d414b9133d6483d9a1c4e04e856e3b-2"),
	},
	{ // Check that encrypted ETags are ignored
		ETags: []ETag{

}
```

The following structure is also accepted:

```json
{
    "result": {
        "allow": true
    }
}
```

	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/minio/pkg/v2/sync/errgroup"
)

// list all errors that can be ignore in a bucket operation.
var bucketOpIgnoredErrs = append(baseIgnoredErrs, errDiskAccessDenied, errUnformattedDisk)

// list all errors that can be ignored in a bucket metadata operation.
var bucketMetadataOpIgnoredErrs = append(bucketOpIgnoredErrs, errVolumeNotFound)

}

// Target implements logger.Target and sends the json
// format of a log entry to the configured http endpoint.
// An internal buffer of logs is maintained but when the
// buffer is full, new logs are just ignored and an error
// is returned to the caller.
type Target struct {
	totalMessages  int64
	failedMessages int64
	status         int32

	// Worker control
	workers    int64
	maxWorkers int64