[#13] Rename go module name according to NSPCC standards

- refactoring s3 gate structure
- cleanup unused code
- rename go module to `github.com/nspcc-dev/neofs-s3-gate`

closes #13

Signed-off-by: Evgeniy Kulikov <kim@nspcc.ru>

api/errors.go

@@ -2,15 +2,9 @@ package api
 
 import (
 	"context"
-	"encoding/xml"
 	"fmt"
 	"net/http"
-	"net/url"
+	"path"
-	"strings"
-
-	"github.com/minio/minio-go/v7/pkg/tags"
-	"github.com/minio/minio/auth"
-	"github.com/minio/minio/neofs/api/crypto"
 )
 
 type (
@@ -24,7 +18,7 @@ const maxEConfigJSONSize = 262272
 
 // Error codes, non exhaustive list - http://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
 const (
-	ErrNone ErrorCode = iota
+	_ ErrorCode = iota
 	ErrAccessDenied
 	ErrBadDigest
 	ErrEntityTooSmall
@@ -1096,7 +1090,7 @@ var errorCodes = errorCodeMap{
 	},
 	ErrObjectTampered: {
 		Code:           "XMinioObjectTampered",
-		Description:    errObjectTampered.Error(),
+		Description:    "The requested object was modified and may be compromised",
 		HTTPStatusCode: http.StatusPartialContent,
 	},
 	ErrMaximumExpires: {
@@ -1618,300 +1612,6 @@ func (e errorCodeMap) ToAPIErr(errCode ErrorCode) Error {
 	return e.ToAPIErrWithErr(errCode, nil)
 }
 
-// toAPIErrorCode - Converts embedded errors. Convenience
-// function written to handle all cases where we have known types of
-// errors returned by underlying layers.
-func toAPIErrorCode(_ context.Context, err error) (apiErr ErrorCode) {
-	if err == nil {
-		return ErrNone
-	}
-
-	switch err {
-	case errInvalidArgument:
-		apiErr = ErrAdminInvalidArgument
-	case errNoSuchUser:
-		apiErr = ErrAdminNoSuchUser
-	case errNoSuchGroup:
-		apiErr = ErrAdminNoSuchGroup
-	case errGroupNotEmpty:
-		apiErr = ErrAdminGroupNotEmpty
-	case errNoSuchPolicy:
-		apiErr = ErrAdminNoSuchPolicy
-	case errSignatureMismatch:
-		apiErr = ErrSignatureDoesNotMatch
-	case errInvalidRange:
-		apiErr = ErrInvalidRange
-	case errDataTooLarge:
-		apiErr = ErrEntityTooLarge
-	case errDataTooSmall:
-		apiErr = ErrEntityTooSmall
-	case errAuthentication:
-		apiErr = ErrAccessDenied
-	case auth.ErrInvalidAccessKeyLength:
-		apiErr = ErrAdminInvalidAccessKey
-	case auth.ErrInvalidSecretKeyLength:
-		apiErr = ErrAdminInvalidSecretKey
-	// SSE errors
-	case errInvalidEncryptionParameters:
-		apiErr = ErrInvalidEncryptionParameters
-	case crypto.ErrInvalidEncryptionMethod:
-		apiErr = ErrInvalidEncryptionMethod
-	case crypto.ErrInvalidCustomerAlgorithm:
-		apiErr = ErrInvalidSSECustomerAlgorithm
-	case crypto.ErrMissingCustomerKey:
-		apiErr = ErrMissingSSECustomerKey
-	case crypto.ErrMissingCustomerKeyMD5:
-		apiErr = ErrMissingSSECustomerKeyMD5
-	case crypto.ErrCustomerKeyMD5Mismatch:
-		apiErr = ErrSSECustomerKeyMD5Mismatch
-	case errObjectTampered:
-		apiErr = ErrObjectTampered
-	case errEncryptedObject:
-		apiErr = ErrSSEEncryptedObject
-	case errInvalidSSEParameters:
-		apiErr = ErrInvalidSSECustomerParameters
-	case crypto.ErrInvalidCustomerKey, crypto.ErrSecretKeyMismatch:
-		apiErr = ErrAccessDenied // no access without correct key
-	case crypto.ErrIncompatibleEncryptionMethod:
-		apiErr = ErrIncompatibleEncryptionMethod
-	case errKMSNotConfigured:
-		apiErr = ErrKMSNotConfigured
-	case crypto.ErrKMSAuthLogin:
-		apiErr = ErrKMSAuthFailure
-	case context.Canceled, context.DeadlineExceeded:
-		apiErr = ErrOperationTimedOut
-	case errDiskNotFound:
-		apiErr = ErrSlowDown
-		// case objectlock.ErrInvalidRetentionDate:
-		// 	apiErr = ErrInvalidRetentionDate
-		// case objectlock.ErrPastObjectLockRetainDate:
-		// 	apiErr = ErrPastObjectLockRetainDate
-		// case objectlock.ErrUnknownWORMModeDirective:
-		// 	apiErr = ErrUnknownWORMModeDirective
-		// case objectlock.ErrObjectLockInvalidHeaders:
-		// 	apiErr = ErrObjectLockInvalidHeaders
-		// case objectlock.ErrMalformedXML:
-		// 	apiErr = ErrMalformedXML
-	}
-
-	// Compression errors
-	switch err {
-	case errInvalidDecompressedSize:
-		apiErr = ErrInvalidDecompressedSize
-	}
-
-	if apiErr != ErrNone {
-		// If there was a match in the above switch case.
-		return apiErr
-	}
-
-	// etcd specific errors, a key is always a bucket for us return
-	// ErrNoSuchBucket in such a case.
-	if err == ErrNoEntriesFound {
-		return ErrNoSuchBucket
-	}
-
-	switch err.(type) {
-	case StorageFull:
-		apiErr = ErrStorageFull
-	// case hash.BadDigest:
-	// 	apiErr = ErrBadDigest
-	case AllAccessDisabled:
-		apiErr = ErrAllAccessDisabled
-	case IncompleteBody:
-		apiErr = ErrIncompleteBody
-	case ObjectExistsAsDirectory:
-		apiErr = ErrObjectExistsAsDirectory
-	case PrefixAccessDenied:
-		apiErr = ErrAccessDenied
-	case ParentIsObject:
-		apiErr = ErrParentIsObject
-	case BucketNameInvalid:
-		apiErr = ErrInvalidBucketName
-	case BucketNotFound:
-		apiErr = ErrNoSuchBucket
-	case BucketAlreadyOwnedByYou:
-		apiErr = ErrBucketAlreadyOwnedByYou
-	case BucketNotEmpty:
-		apiErr = ErrBucketNotEmpty
-	case BucketAlreadyExists:
-		apiErr = ErrBucketAlreadyExists
-	case BucketExists:
-		apiErr = ErrBucketAlreadyOwnedByYou
-	case ObjectNotFound:
-		apiErr = ErrNoSuchKey
-	case ObjectAlreadyExists:
-		apiErr = ErrMethodNotAllowed
-	case ObjectNameInvalid:
-		apiErr = ErrInvalidObjectName
-	case ObjectNamePrefixAsSlash:
-		apiErr = ErrInvalidObjectNamePrefixSlash
-	case InvalidUploadID:
-		apiErr = ErrNoSuchUpload
-	case InvalidPart:
-		apiErr = ErrInvalidPart
-	case InsufficientWriteQuorum:
-		apiErr = ErrSlowDown
-	case InsufficientReadQuorum:
-		apiErr = ErrSlowDown
-	case UnsupportedDelimiter:
-		apiErr = ErrNotImplemented
-	case InvalidMarkerPrefixCombination:
-		apiErr = ErrNotImplemented
-	case InvalidUploadIDKeyCombination:
-		apiErr = ErrNotImplemented
-	case MalformedUploadID:
-		apiErr = ErrNoSuchUpload
-	case PartTooSmall:
-		apiErr = ErrEntityTooSmall
-	case SignatureDoesNotMatch:
-		apiErr = ErrSignatureDoesNotMatch
-	// case hash.SHA256Mismatch:
-	// 	apiErr = ErrContentSHA256Mismatch
-	case ObjectTooLarge:
-		apiErr = ErrEntityTooLarge
-	case ObjectTooSmall:
-		apiErr = ErrEntityTooSmall
-	case NotImplemented:
-		apiErr = ErrNotImplemented
-	case PartTooBig:
-		apiErr = ErrEntityTooLarge
-	case UnsupportedMetadata:
-		apiErr = ErrUnsupportedMetadata
-	case BucketPolicyNotFound:
-		apiErr = ErrNoSuchBucketPolicy
-	case BucketLifecycleNotFound:
-		apiErr = ErrNoSuchLifecycleConfiguration
-	case BucketSSEConfigNotFound:
-		apiErr = ErrNoSuchBucketSSEConfig
-	case BucketTaggingNotFound:
-		apiErr = ErrBucketTaggingNotFound
-	case BucketObjectLockConfigNotFound:
-		apiErr = ErrObjectLockConfigurationNotFound
-	case BucketQuotaConfigNotFound:
-		apiErr = ErrAdminNoSuchQuotaConfiguration
-	case BucketQuotaExceeded:
-		apiErr = ErrAdminBucketQuotaExceeded
-	// case *event.ErrInvalidEventName:
-	// 	apiErr = ErrEventNotification
-	// case *event.ErrInvalidARN:
-	// 	apiErr = ErrARNNotification
-	// case *event.ErrARNNotFound:
-	// 	apiErr = ErrARNNotification
-	// case *event.ErrUnknownRegion:
-	// 	apiErr = ErrRegionNotification
-	// case *event.ErrInvalidFilterName:
-	// 	apiErr = ErrFilterNameInvalid
-	// case *event.ErrFilterNamePrefix:
-	// 	apiErr = ErrFilterNamePrefix
-	// case *event.ErrFilterNameSuffix:
-	// 	apiErr = ErrFilterNameSuffix
-	// case *event.ErrInvalidFilterValue:
-	// 	apiErr = ErrFilterValueInvalid
-	// case *event.ErrDuplicateEventName:
-	// 	apiErr = ErrOverlappingConfigs
-	// case *event.ErrDuplicateQueueConfiguration:
-	// 	apiErr = ErrOverlappingFilterNotification
-	// case *event.ErrUnsupportedConfiguration:
-	// 	apiErr = ErrUnsupportedNotification
-	case OperationTimedOut:
-		apiErr = ErrOperationTimedOut
-	case BackendDown:
-		apiErr = ErrBackendDown
-	case ObjectNameTooLong:
-		apiErr = ErrKeyTooLongError
-	default:
-		var ie, iw int
-		// This work-around is to handle the issue golang/go#30648
-		if _, ferr := fmt.Fscanf(strings.NewReader(err.Error()),
-			"request declared a Content-Length of %d but only wrote %d bytes",
-			&ie, &iw); ferr != nil {
-			apiErr = ErrInternalError
-			// Make sure to log the errors which we cannot translate
-			// to a meaningful S3 API errors. This is added to aid in
-			// debugging unexpected/unhandled errors.
-			// logger.LogIf(ctx, err)
-		} else if ie > iw {
-			apiErr = ErrIncompleteBody
-		} else {
-			apiErr = ErrInternalError
-			// Make sure to log the errors which we cannot translate
-			// to a meaningful S3 API errors. This is added to aid in
-			// debugging unexpected/unhandled errors.
-			// logger.LogIf(ctx, err)
-		}
-	}
-
-	return apiErr
-}
-
-var noError = Error{}
-
-// toAPIError - Converts embedded errors. Convenience
-// function written to handle all cases where we have known types of
-// errors returned by underlying layers.
-func toAPIError(ctx context.Context, err error) Error {
-	if err == nil {
-		return noError
-	}
-
-	var apiErr = errorCodes.ToAPIErr(toAPIErrorCode(ctx, err))
-	if apiErr.Code == "InternalError" {
-		// If we see an internal error try to interpret
-		// any underlying errors if possible depending on
-		// their internal error types. This code is only
-		// useful with gateway implementations.
-		switch e := err.(type) {
-		case *xml.SyntaxError:
-			apiErr = Error{
-				Code: "MalformedXML",
-				Description: fmt.Sprintf("%s (%s)", errorCodes[ErrMalformedXML].Description,
-					e.Error()),
-				HTTPStatusCode: errorCodes[ErrMalformedXML].HTTPStatusCode,
-			}
-		case url.EscapeError:
-			apiErr = Error{
-				Code: "XMinioInvalidObjectName",
-				Description: fmt.Sprintf("%s (%s)", errorCodes[ErrInvalidObjectName].Description,
-					e.Error()),
-				HTTPStatusCode: http.StatusBadRequest,
-			}
-		// case lifecycle.Error:
-		// 	apiErr = Error{
-		// 		Code:           "InvalidRequest",
-		// 		Description:    e.Error(),
-		// 		HTTPStatusCode: http.StatusBadRequest,
-		// 	}
-		case tags.Error:
-			apiErr = Error{
-				Code:           e.Code(),
-				Description:    e.Error(),
-				HTTPStatusCode: http.StatusBadRequest,
-			}
-		// case policy.Error:
-		// 	apiErr = Error{
-		// 		Code:           "MalformedPolicy",
-		// 		Description:    e.Error(),
-		// 		HTTPStatusCode: http.StatusBadRequest,
-		// 	}
-		case crypto.Error:
-			apiErr = Error{
-				Code:           "XMinIOEncryptionError",
-				Description:    e.Error(),
-				HTTPStatusCode: http.StatusBadRequest,
-			}
-		case ErrorResponse:
-			apiErr = Error{
-				Code:           e.Code,
-				Description:    e.Message,
-				HTTPStatusCode: e.StatusCode,
-			}
-		}
-	}
-
-	return apiErr
-}
-
 // GetAPIError provides API Error for input API error code.
 func GetAPIError(code ErrorCode) Error {
 	if apiErr, ok := errorCodes[code]; ok {
@@ -1930,8 +1630,366 @@ func getAPIErrorResponse(ctx context.Context, err Error, resource, requestID, ho
 		BucketName: reqInfo.BucketName,
 		Key:        reqInfo.ObjectName,
 		Resource:   resource,
-		Region:     "",
 		RequestID:  requestID,
 		HostID:     hostID,
 	}
 }
+
+// SignatureDoesNotMatch - when content md5 does not match with what was sent from client.
+type SignatureDoesNotMatch struct{}
+
+func (e SignatureDoesNotMatch) Error() string {
+	return "The request signature we calculated does not match the signature you provided. Check your key and signing method."
+}
+
+// StorageFull storage ran out of space.
+type StorageFull struct{}
+
+func (e StorageFull) Error() string {
+	return "Storage reached its minimum free disk threshold."
+}
+
+// SlowDown  too many file descriptors open or backend busy .
+type SlowDown struct{}
+
+func (e SlowDown) Error() string {
+	return "Please reduce your request rate"
+}
+
+// InsufficientReadQuorum storage cannot satisfy quorum for read operation.
+type InsufficientReadQuorum struct{}
+
+func (e InsufficientReadQuorum) Error() string {
+	return "Storage resources are insufficient for the read operation."
+}
+
+// InsufficientWriteQuorum storage cannot satisfy quorum for write operation.
+type InsufficientWriteQuorum struct{}
+
+func (e InsufficientWriteQuorum) Error() string {
+	return "Storage resources are insufficient for the write operation."
+}
+
+// GenericError - generic object layer error.
+type GenericError struct {
+	Bucket string
+	Object string
+}
+
+// BucketNotFound bucket does not exist.
+type BucketNotFound GenericError
+
+func (e BucketNotFound) Error() string {
+	return "Bucket not found: " + e.Bucket
+}
+
+// BucketAlreadyExists the requested bucket name is not available.
+type BucketAlreadyExists GenericError
+
+func (e BucketAlreadyExists) Error() string {
+	return "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again."
+}
+
+// BucketAlreadyOwnedByYou already owned by you.
+type BucketAlreadyOwnedByYou GenericError
+
+func (e BucketAlreadyOwnedByYou) Error() string {
+	return "Bucket already owned by you: " + e.Bucket
+}
+
+// BucketNotEmpty bucket is not empty.
+type BucketNotEmpty GenericError
+
+func (e BucketNotEmpty) Error() string {
+	return "Bucket not empty: " + e.Bucket
+}
+
+// ObjectNotFound object does not exist.
+type ObjectNotFound GenericError
+
+func (e ObjectNotFound) Error() string {
+	return "Object not found: " + e.Bucket + "#" + e.Object
+}
+
+// ObjectAlreadyExists object already exists.
+type ObjectAlreadyExists GenericError
+
+func (e ObjectAlreadyExists) Error() string {
+	return "Object: " + e.Bucket + "#" + e.Object + " already exists"
+}
+
+// ObjectExistsAsDirectory object already exists as a directory.
+type ObjectExistsAsDirectory GenericError
+
+func (e ObjectExistsAsDirectory) Error() string {
+	return "Object exists on : " + e.Bucket + " as directory " + e.Object
+}
+
+// PrefixAccessDenied object access is denied.
+type PrefixAccessDenied GenericError
+
+func (e PrefixAccessDenied) Error() string {
+	return "Prefix access is denied: " + e.Bucket + SlashSeparator + e.Object
+}
+
+// ParentIsObject object access is denied.
+type ParentIsObject GenericError
+
+func (e ParentIsObject) Error() string {
+	return "Parent is object " + e.Bucket + SlashSeparator + path.Dir(e.Object)
+}
+
+// BucketExists bucket exists.
+type BucketExists GenericError
+
+func (e BucketExists) Error() string {
+	return "Bucket exists: " + e.Bucket
+}
+
+// UnsupportedDelimiter - unsupported delimiter.
+type UnsupportedDelimiter struct {
+	Delimiter string
+}
+
+func (e UnsupportedDelimiter) Error() string {
+	return fmt.Sprintf("delimiter '%s' is not supported. Only '/' is supported", e.Delimiter)
+}
+
+// InvalidUploadIDKeyCombination - invalid upload id and key marker combination.
+type InvalidUploadIDKeyCombination struct {
+	UploadIDMarker, KeyMarker string
+}
+
+func (e InvalidUploadIDKeyCombination) Error() string {
+	return fmt.Sprintf("Invalid combination of uploadID marker '%s' and marker '%s'", e.UploadIDMarker, e.KeyMarker)
+}
+
+// InvalidMarkerPrefixCombination - invalid marker and prefix combination.
+type InvalidMarkerPrefixCombination struct {
+	Marker, Prefix string
+}
+
+func (e InvalidMarkerPrefixCombination) Error() string {
+	return fmt.Sprintf("Invalid combination of marker '%s' and prefix '%s'", e.Marker, e.Prefix)
+}
+
+// BucketPolicyNotFound - no bucket policy found.
+type BucketPolicyNotFound GenericError
+
+func (e BucketPolicyNotFound) Error() string {
+	return "No bucket policy configuration found for bucket: " + e.Bucket
+}
+
+// BucketLifecycleNotFound - no bucket lifecycle found.
+type BucketLifecycleNotFound GenericError
+
+func (e BucketLifecycleNotFound) Error() string {
+	return "No bucket lifecycle configuration found for bucket : " + e.Bucket
+}
+
+// BucketSSEConfigNotFound - no bucket encryption found
+type BucketSSEConfigNotFound GenericError
+
+func (e BucketSSEConfigNotFound) Error() string {
+	return "No bucket encryption configuration found for bucket: " + e.Bucket
+}
+
+// BucketTaggingNotFound - no bucket tags found
+type BucketTaggingNotFound GenericError
+
+func (e BucketTaggingNotFound) Error() string {
+	return "No bucket tags found for bucket: " + e.Bucket
+}
+
+// BucketObjectLockConfigNotFound - no bucket object lock config found
+type BucketObjectLockConfigNotFound GenericError
+
+func (e BucketObjectLockConfigNotFound) Error() string {
+	return "No bucket object lock configuration found for bucket: " + e.Bucket
+}
+
+// BucketQuotaConfigNotFound - no bucket quota config found.
+type BucketQuotaConfigNotFound GenericError
+
+func (e BucketQuotaConfigNotFound) Error() string {
+	return "No quota config found for bucket : " + e.Bucket
+}
+
+// BucketQuotaExceeded - bucket quota exceeded.
+type BucketQuotaExceeded GenericError
+
+func (e BucketQuotaExceeded) Error() string {
+	return "Bucket quota exceeded for bucket: " + e.Bucket
+}
+
+// Bucket related errors.
+
+// BucketNameInvalid - bucketname provided is invalid.
+type BucketNameInvalid GenericError
+
+// Error returns string an error formatted as the given text.
+func (e BucketNameInvalid) Error() string {
+	return "Bucket name invalid: " + e.Bucket
+}
+
+// Object related errors.
+
+// ObjectNameInvalid - object name provided is invalid.
+type ObjectNameInvalid GenericError
+
+// ObjectNameTooLong - object name too long.
+type ObjectNameTooLong GenericError
+
+// ObjectNamePrefixAsSlash - object name has a slash as prefix.
+type ObjectNamePrefixAsSlash GenericError
+
+// Error returns string an error formatted as the given text.
+func (e ObjectNameInvalid) Error() string {
+	return "Object name invalid: " + e.Bucket + "#" + e.Object
+}
+
+// Error returns string an error formatted as the given text.
+func (e ObjectNameTooLong) Error() string {
+	return "Object name too long: " + e.Bucket + "#" + e.Object
+}
+
+// Error returns string an error formatted as the given text.
+func (e ObjectNamePrefixAsSlash) Error() string {
+	return "Object name contains forward slash as pefix: " + e.Bucket + "#" + e.Object
+}
+
+// AllAccessDisabled All access to this object has been disabled
+type AllAccessDisabled GenericError
+
+// Error returns string an error formatted as the given text.
+func (e AllAccessDisabled) Error() string {
+	return "All access to this object has been disabled"
+}
+
+// IncompleteBody You did not provide the number of bytes specified by the Content-Length HTTP header.
+type IncompleteBody GenericError
+
+// Error returns string an error formatted as the given text.
+func (e IncompleteBody) Error() string {
+	return e.Bucket + "#" + e.Object + "has incomplete body"
+}
+
+// InvalidRange - invalid range typed error.
+type InvalidRange struct {
+	OffsetBegin  int64
+	OffsetEnd    int64
+	ResourceSize int64
+}
+
+func (e InvalidRange) Error() string {
+	return fmt.Sprintf("The requested range \"bytes %d-%d/%d\" is not satisfiable.", e.OffsetBegin, e.OffsetEnd, e.ResourceSize)
+}
+
+// ObjectTooLarge error returned when the size of the object > max object size allowed (5G) per request.
+type ObjectTooLarge GenericError
+
+func (e ObjectTooLarge) Error() string {
+	return "size of the object greater than what is allowed(5G)"
+}
+
+// ObjectTooSmall error returned when the size of the object < what is expected.
+type ObjectTooSmall GenericError
+
+func (e ObjectTooSmall) Error() string {
+	return "size of the object less than what is expected"
+}
+
+// OperationTimedOut - a timeout occurred.
+type OperationTimedOut struct {
+}
+
+func (e OperationTimedOut) Error() string {
+	return "Operation timed out"
+}
+
+// Multipart related errors.
+
+// MalformedUploadID malformed upload id.
+type MalformedUploadID struct {
+	UploadID string
+}
+
+func (e MalformedUploadID) Error() string {
+	return "Malformed upload id " + e.UploadID
+}
+
+// InvalidUploadID invalid upload id.
+type InvalidUploadID struct {
+	Bucket   string
+	Object   string
+	UploadID string
+}
+
+func (e InvalidUploadID) Error() string {
+	return "Invalid upload id " + e.UploadID
+}
+
+// InvalidPart One or more of the specified parts could not be found
+type InvalidPart struct {
+	PartNumber int
+	ExpETag    string
+	GotETag    string
+}
+
+func (e InvalidPart) Error() string {
+	return fmt.Sprintf("Specified part could not be found. PartNumber %d, Expected %s, got %s",
+		e.PartNumber, e.ExpETag, e.GotETag)
+}
+
+// PartTooSmall - error if part size is less than 5MB.
+type PartTooSmall struct {
+	PartSize   int64
+	PartNumber int
+	PartETag   string
+}
+
+func (e PartTooSmall) Error() string {
+	return fmt.Sprintf("Part size for %d should be at least 5MB", e.PartNumber)
+}
+
+// PartTooBig returned if size of part is bigger than the allowed limit.
+type PartTooBig struct{}
+
+func (e PartTooBig) Error() string {
+	return "Part size bigger than the allowed limit"
+}
+
+// InvalidETag error returned when the etag has changed on disk
+type InvalidETag struct{}
+
+func (e InvalidETag) Error() string {
+	return "etag of the object has changed"
+}
+
+// NotImplemented If a feature is not implemented
+type NotImplemented struct{}
+
+func (e NotImplemented) Error() string {
+	return "Not Implemented"
+}
+
+// UnsupportedMetadata - unsupported metadata
+type UnsupportedMetadata struct{}
+
+func (e UnsupportedMetadata) Error() string {
+	return "Unsupported headers in Metadata"
+}
+
+// BackendDown is returned for network errors or if the gateway's backend is down.
+type BackendDown struct{}
+
+func (e BackendDown) Error() string {
+	return "Backend down"
+}
+
+// PreConditionFailed - Check if copy precondition failed
+type PreConditionFailed struct{}
+
+func (e PreConditionFailed) Error() string {
+	return "At least one of the pre-conditions you specified did not hold"
+}

api/handler/api.go

@@ -3,8 +3,8 @@ package handler
 import (
 	"errors"
 
-	"github.com/minio/minio/neofs/api"
+	"github.com/nspcc-dev/neofs-s3-gate/api"
-	"github.com/minio/minio/neofs/layer"
+	"github.com/nspcc-dev/neofs-s3-gate/api/layer"
 	"go.uber.org/zap"
 )
 

api/handler/unimplemented.go

@@ -3,7 +3,7 @@ package handler
 import (
 	"net/http"
 
-	"github.com/minio/minio/neofs/api"
+	"github.com/nspcc-dev/neofs-s3-gate/api"
 )
 
 func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {

api/layer/container.go

@@ -4,10 +4,10 @@ import (
 	"context"
 	"time"
 
-	"github.com/minio/minio/auth"
 	"github.com/nspcc-dev/neofs-api-go/container"
 	"github.com/nspcc-dev/neofs-api-go/refs"
 	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-s3-gate/auth"
 	"go.uber.org/zap"
 )
 

api/layer/layer.go

@@ -7,10 +7,10 @@ import (
 	"strings"
 	"time"
 
-	"github.com/minio/minio/neofs/pool"
 	"github.com/nspcc-dev/neofs-api-go/object"
 	"github.com/nspcc-dev/neofs-api-go/refs"
 	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )

api/layer/object.go

@@ -5,12 +5,12 @@ import (
 	"io"
 	"time"
 
-	"github.com/minio/minio/neofs/pool"
 	"github.com/nspcc-dev/neofs-api-go/object"
 	"github.com/nspcc-dev/neofs-api-go/query"
 	"github.com/nspcc-dev/neofs-api-go/refs"
 	"github.com/nspcc-dev/neofs-api-go/service"
 	"github.com/nspcc-dev/neofs-api-go/storagegroup"
+	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )

api/metrics/api.go

@@ -49,10 +49,7 @@ type (
 	}
 )
 
-const (
+const systemPath = "/system"
-	// TODO: should be imported from routing
-	systemPath = "/system"
-)
 
 var (
 	httpStatsMetric      = new(HTTPStats)
@@ -106,12 +103,6 @@ func collectHTTPMetrics(ch chan<- prometheus.Metric) {
 	}
 }
 
-func Middleware(h http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		APIStats(r.RequestURI, h.ServeHTTP).ServeHTTP(w, r)
-	})
-}
-
 func APIStats(api string, f http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		httpStatsMetric.currentS3Requests.Inc(api)

api/metrics/collector.go

@@ -1,7 +1,7 @@
 package metrics
 
 import (
-	"github.com/minio/minio/misc"
+	"github.com/nspcc-dev/neofs-s3-gate/misc"
 	"github.com/prometheus/client_golang/prometheus"
 )
 

api/pool/pool.go

@@ -3,15 +3,11 @@ package pool
 import (
 	"context"
 	"crypto/ecdsa"
-	crand "crypto/rand"
-	"encoding/binary"
 	"math/rand"
 	"sort"
 	"sync"
 	"time"
 
-	"google.golang.org/grpc/grpclog"
-
 	"github.com/nspcc-dev/neofs-api-go/service"
 	"github.com/nspcc-dev/neofs-api-go/state"
 	"github.com/pkg/errors"
@@ -19,6 +15,7 @@ import (
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/keepalive"
 )
 
@@ -121,14 +118,10 @@ func New(cfg *Config) (Pool, error) {
 		grpclog.SetLoggerV2(cfg.GRPCLogger)
 	}
 
-	buf := make([]byte, 8)
+	seed := time.Now().UnixNano()
-	if _, err := crand.Read(buf); err != nil {
-		return nil, err
-	}
 
-	seed := binary.BigEndian.Uint64(buf)
+	rand.Seed(seed)
-	rand.Seed(int64(seed))
+	cfg.Logger.Info("used random seed", zap.Int64("seed", seed))
-	cfg.Logger.Info("used random seed", zap.Uint64("seed", seed))
 
 	p.reqHealth = new(state.HealthRequest)
 	p.reqHealth.SetTTL(service.NonForwardingTTL)

api/response.go

@@ -10,7 +10,7 @@ import (
 	"strconv"
 
 	"github.com/google/uuid"
-	"github.com/minio/minio/misc"
+	"github.com/nspcc-dev/neofs-s3-gate/misc"
 )
 
 type (
@@ -152,7 +152,7 @@ func setCommonHeaders(w http.ResponseWriter) {
 
 // removeSensitiveHeaders removes confidential encryption
 // information - e.g. the SSE-C key - from the HTTP headers.
-// It has the same semantics as RemoveSensitiveEntires.
+// It has the same semantics as RemoveSensitiveEntries.
 func removeSensitiveHeaders(h http.Header) {
 	h.Del(hdrSSECustomerKey)
 	h.Del(hdrSSECopyKey)

api/router.go

@@ -4,8 +4,8 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio/minio/auth"
+	"github.com/nspcc-dev/neofs-s3-gate/api/metrics"
-	"github.com/minio/minio/neofs/metrics"
+	"github.com/nspcc-dev/neofs-s3-gate/auth"
 	"go.uber.org/zap"
 )
 
@@ -79,7 +79,6 @@ type (
 )
 
 const (
-
 	// SlashSeparator - slash separator.
 	SlashSeparator = "/"
 

api/user-auth.go

@@ -4,7 +4,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio/minio/auth"
+	"github.com/nspcc-dev/neofs-s3-gate/auth"
 	"go.uber.org/zap"
 )
 

cmd/gate/app-settings.go

@@ -12,13 +12,11 @@ import (
 	"strings"
 	"time"
 
-	"github.com/minio/minio/auth"
-	"github.com/minio/minio/neofs/pool"
-	"github.com/pkg/errors"
-
-	"github.com/minio/minio/misc"
-
 	crypto "github.com/nspcc-dev/neofs-crypto"
+	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
+	"github.com/nspcc-dev/neofs-s3-gate/auth"
+	"github.com/nspcc-dev/neofs-s3-gate/misc"
+	"github.com/pkg/errors"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"

cmd/gate/app.go

@@ -7,11 +7,11 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/minio/minio/auth"
+	"github.com/nspcc-dev/neofs-s3-gate/api"
-	"github.com/minio/minio/neofs/api"
+	"github.com/nspcc-dev/neofs-s3-gate/api/handler"
-	"github.com/minio/minio/neofs/api/handler"
+	"github.com/nspcc-dev/neofs-s3-gate/api/layer"
-	"github.com/minio/minio/neofs/layer"
+	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
-	"github.com/minio/minio/neofs/pool"
+	"github.com/nspcc-dev/neofs-s3-gate/auth"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 	"google.golang.org/grpc/keepalive"

go.mod

@@ -1,12 +1,11 @@
-module github.com/minio/minio
+module github.com/nspcc-dev/neofs-s3-gate
 
-go 1.13
+go 1.14
 
 require (
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/mux v1.7.4
 	github.com/klauspost/compress v1.10.10
-	github.com/minio/minio-go/v7 v7.0.3
 	github.com/nspcc-dev/neofs-api-go v1.3.0
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/pkg/errors v0.9.1
@@ -15,5 +14,11 @@ require (
 	github.com/spf13/viper v1.7.0
 	go.uber.org/atomic v1.6.0
 	go.uber.org/zap v1.15.0
+	golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899 // indirect
+	golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
+	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae // indirect
+	golang.org/x/text v0.3.3 // indirect
 	google.golang.org/grpc v1.29.1
+	gopkg.in/ini.v1 v1.57.0 // indirect
+	gopkg.in/yaml.v2 v2.2.8 // indirect
 )

go.sum

@@ -182,7 +182,6 @@ github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
-github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
@@ -192,8 +191,6 @@ github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQL
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.10.10 h1:a/y8CglcM7gLGYmlbP/stPE5sR3hbhFRUjCBfd/0B3I=
 github.com/klauspost/compress v1.10.10/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
-github.com/klauspost/cpuid v1.2.3/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
-github.com/klauspost/cpuid v1.3.1/go.mod h1:bYW4mA6ZgKPob1/Dlai2LviZJO7KGI3uoWLd42rAQw4=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
@@ -218,12 +215,6 @@ github.com/mattn/go-isatty v0.0.10/go.mod h1:qgIWMr58cqv1PHHyhnkY9lrL7etaEgOFcME
 github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
-github.com/minio/md5-simd v1.1.0 h1:QPfiOqlZH+Cj9teu0t9b1nTBfPbyTl16Of5MeuShdK4=
-github.com/minio/md5-simd v1.1.0/go.mod h1:XpBqgZULrMYD3R+M28PcmP0CkI7PEMzB3U77ZrKZ0Gw=
-github.com/minio/minio-go/v7 v7.0.3 h1:a2VHaXDlKBcB3J5XJhKVfWBRi1+ZmMWFXABQ8TLlWbA=
-github.com/minio/minio-go/v7 v7.0.3/go.mod h1:TA0CQCjJZHM5SJj9IjqR0NmpmQJ6bCbXifAJ3mUU6Hw=
-github.com/minio/sha256-simd v0.1.1 h1:5QHSlgo3nt5yKOJrC7W8w7X+NFl8cMPZm96iu8kKUJU=
-github.com/minio/sha256-simd v0.1.1/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
@@ -309,7 +300,6 @@ github.com/prometheus/procfs v0.0.11/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
@@ -317,7 +307,6 @@ github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
-github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/soheilhy/cmux v0.1.4 h1:0HKaf1o97UwFjHH9o5XsHUOF+tqmdA7KEzXLpiyaw0E=

neofs/api/crypto/errors.go

@@ -1,63 +0,0 @@
-package crypto
-
-import "fmt"
-
-// Error is the generic type for any error happening during decrypting
-// an object. It indicates that the object itself or its metadata was
-// modified accidentally or maliciously.
-type Error struct {
-	err error
-}
-
-// Errorf - formats according to a format specifier and returns
-// the string as a value that satisfies error of type crypto.Error
-func Errorf(format string, a ...interface{}) error {
-	return Error{err: fmt.Errorf(format, a...)}
-}
-
-// Unwrap the internal error.
-func (e Error) Unwrap() error { return e.err }
-
-// Error 'error' compatible method.
-func (e Error) Error() string {
-	if e.err == nil {
-		return "crypto: cause <nil>"
-	}
-	return e.err.Error()
-}
-
-var (
-	// ErrInvalidEncryptionMethod indicates that the specified SSE encryption method
-	// is not supported.
-	ErrInvalidEncryptionMethod = Errorf("The encryption method is not supported")
-
-	// ErrInvalidCustomerAlgorithm indicates that the specified SSE-C algorithm
-	// is not supported.
-	ErrInvalidCustomerAlgorithm = Errorf("The SSE-C algorithm is not supported")
-
-	// ErrMissingCustomerKey indicates that the HTTP headers contains no SSE-C client key.
-	ErrMissingCustomerKey = Errorf("The SSE-C request is missing the customer key")
-
-	// ErrMissingCustomerKeyMD5 indicates that the HTTP headers contains no SSE-C client key
-	// MD5 checksum.
-	ErrMissingCustomerKeyMD5 = Errorf("The SSE-C request is missing the customer key MD5")
-
-	// ErrInvalidCustomerKey indicates that the SSE-C client key is not valid - e.g. not a
-	// base64-encoded string or not 256 bits long.
-	ErrInvalidCustomerKey = Errorf("The SSE-C client key is invalid")
-
-	// ErrSecretKeyMismatch indicates that the provided secret key (SSE-C client key / SSE-S3 KMS key)
-	// does not match the secret key used during encrypting the object.
-	ErrSecretKeyMismatch = Errorf("The secret key does not match the secret key used during upload")
-
-	// ErrCustomerKeyMD5Mismatch indicates that the SSE-C key MD5 does not match the
-	// computed MD5 sum. This means that the client provided either the wrong key for
-	// a certain MD5 checksum or the wrong MD5 for a certain key.
-	ErrCustomerKeyMD5Mismatch = Errorf("The provided SSE-C key MD5 does not match the computed MD5 of the SSE-C key")
-	// ErrIncompatibleEncryptionMethod indicates that both SSE-C headers and SSE-S3 headers were specified, and are incompatible
-	// The client needs to remove the SSE-S3 header or the SSE-C headers
-	ErrIncompatibleEncryptionMethod = Errorf("Server side encryption specified with both SSE-C and SSE-S3 headers")
-
-	// ErrKMSAuthLogin is raised when there is a failure authenticating to KMS
-	ErrKMSAuthLogin = Errorf("Vault service did not return auth info")
-)

neofs/api/object-errors.go

@@ -1,474 +0,0 @@
-package api
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"path"
-)
-
-// Converts underlying storage error. Convenience function written to
-// handle all cases where we have known types of errors returned by
-// underlying storage layer.
-func toObjectErr(err error, params ...string) error {
-	switch err {
-	case errVolumeNotFound:
-		if len(params) >= 1 {
-			err = BucketNotFound{Bucket: params[0]}
-		}
-	case errVolumeNotEmpty:
-		if len(params) >= 1 {
-			err = BucketNotEmpty{Bucket: params[0]}
-		}
-	case errVolumeExists:
-		if len(params) >= 1 {
-			err = BucketExists{Bucket: params[0]}
-		}
-	case errDiskFull:
-		err = StorageFull{}
-	case errTooManyOpenFiles:
-		err = SlowDown{}
-	case errFileAccessDenied:
-		if len(params) >= 2 {
-			err = PrefixAccessDenied{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errFileParentIsFile:
-		if len(params) >= 2 {
-			err = ParentIsObject{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errIsNotRegular:
-		if len(params) >= 2 {
-			err = ObjectExistsAsDirectory{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errFileNotFound:
-		switch len(params) {
-		case 2:
-			err = ObjectNotFound{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		case 3:
-			err = InvalidUploadID{
-				Bucket:   params[0],
-				Object:   params[1],
-				UploadID: params[2],
-			}
-		}
-	case errFileNameTooLong:
-		if len(params) >= 2 {
-			err = ObjectNameInvalid{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errDataTooLarge:
-		if len(params) >= 2 {
-			err = ObjectTooLarge{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errDataTooSmall:
-		if len(params) >= 2 {
-			err = ObjectTooSmall{
-				Bucket: params[0],
-				Object: params[1],
-			}
-		}
-	case errXLReadQuorum:
-		err = InsufficientReadQuorum{}
-	case errXLWriteQuorum:
-		err = InsufficientWriteQuorum{}
-	case io.ErrUnexpectedEOF, io.ErrShortWrite:
-		err = IncompleteBody{}
-	case context.Canceled, context.DeadlineExceeded:
-		err = IncompleteBody{}
-	}
-	return err
-}
-
-// SignatureDoesNotMatch - when content md5 does not match with what was sent from client.
-type SignatureDoesNotMatch struct{}
-
-func (e SignatureDoesNotMatch) Error() string {
-	return "The request signature we calculated does not match the signature you provided. Check your key and signing method."
-}
-
-// StorageFull storage ran out of space.
-type StorageFull struct{}
-
-func (e StorageFull) Error() string {
-	return "Storage reached its minimum free disk threshold."
-}
-
-// SlowDown  too many file descriptors open or backend busy .
-type SlowDown struct{}
-
-func (e SlowDown) Error() string {
-	return "Please reduce your request rate"
-}
-
-// InsufficientReadQuorum storage cannot satisfy quorum for read operation.
-type InsufficientReadQuorum struct{}
-
-func (e InsufficientReadQuorum) Error() string {
-	return "Storage resources are insufficient for the read operation."
-}
-
-// InsufficientWriteQuorum storage cannot satisfy quorum for write operation.
-type InsufficientWriteQuorum struct{}
-
-func (e InsufficientWriteQuorum) Error() string {
-	return "Storage resources are insufficient for the write operation."
-}
-
-// GenericError - generic object layer error.
-type GenericError struct {
-	Bucket string
-	Object string
-}
-
-// BucketNotFound bucket does not exist.
-type BucketNotFound GenericError
-
-func (e BucketNotFound) Error() string {
-	return "Bucket not found: " + e.Bucket
-}
-
-// BucketAlreadyExists the requested bucket name is not available.
-type BucketAlreadyExists GenericError
-
-func (e BucketAlreadyExists) Error() string {
-	return "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again."
-}
-
-// BucketAlreadyOwnedByYou already owned by you.
-type BucketAlreadyOwnedByYou GenericError
-
-func (e BucketAlreadyOwnedByYou) Error() string {
-	return "Bucket already owned by you: " + e.Bucket
-}
-
-// BucketNotEmpty bucket is not empty.
-type BucketNotEmpty GenericError
-
-func (e BucketNotEmpty) Error() string {
-	return "Bucket not empty: " + e.Bucket
-}
-
-// ObjectNotFound object does not exist.
-type ObjectNotFound GenericError
-
-func (e ObjectNotFound) Error() string {
-	return "Object not found: " + e.Bucket + "#" + e.Object
-}
-
-// ObjectAlreadyExists object already exists.
-type ObjectAlreadyExists GenericError
-
-func (e ObjectAlreadyExists) Error() string {
-	return "Object: " + e.Bucket + "#" + e.Object + " already exists"
-}
-
-// ObjectExistsAsDirectory object already exists as a directory.
-type ObjectExistsAsDirectory GenericError
-
-func (e ObjectExistsAsDirectory) Error() string {
-	return "Object exists on : " + e.Bucket + " as directory " + e.Object
-}
-
-// PrefixAccessDenied object access is denied.
-type PrefixAccessDenied GenericError
-
-func (e PrefixAccessDenied) Error() string {
-	return "Prefix access is denied: " + e.Bucket + SlashSeparator + e.Object
-}
-
-// ParentIsObject object access is denied.
-type ParentIsObject GenericError
-
-func (e ParentIsObject) Error() string {
-	return "Parent is object " + e.Bucket + SlashSeparator + path.Dir(e.Object)
-}
-
-// BucketExists bucket exists.
-type BucketExists GenericError
-
-func (e BucketExists) Error() string {
-	return "Bucket exists: " + e.Bucket
-}
-
-// UnsupportedDelimiter - unsupported delimiter.
-type UnsupportedDelimiter struct {
-	Delimiter string
-}
-
-func (e UnsupportedDelimiter) Error() string {
-	return fmt.Sprintf("delimiter '%s' is not supported. Only '/' is supported", e.Delimiter)
-}
-
-// InvalidUploadIDKeyCombination - invalid upload id and key marker combination.
-type InvalidUploadIDKeyCombination struct {
-	UploadIDMarker, KeyMarker string
-}
-
-func (e InvalidUploadIDKeyCombination) Error() string {
-	return fmt.Sprintf("Invalid combination of uploadID marker '%s' and marker '%s'", e.UploadIDMarker, e.KeyMarker)
-}
-
-// InvalidMarkerPrefixCombination - invalid marker and prefix combination.
-type InvalidMarkerPrefixCombination struct {
-	Marker, Prefix string
-}
-
-func (e InvalidMarkerPrefixCombination) Error() string {
-	return fmt.Sprintf("Invalid combination of marker '%s' and prefix '%s'", e.Marker, e.Prefix)
-}
-
-// BucketPolicyNotFound - no bucket policy found.
-type BucketPolicyNotFound GenericError
-
-func (e BucketPolicyNotFound) Error() string {
-	return "No bucket policy configuration found for bucket: " + e.Bucket
-}
-
-// BucketLifecycleNotFound - no bucket lifecycle found.
-type BucketLifecycleNotFound GenericError
-
-func (e BucketLifecycleNotFound) Error() string {
-	return "No bucket lifecycle configuration found for bucket : " + e.Bucket
-}
-
-// BucketSSEConfigNotFound - no bucket encryption found
-type BucketSSEConfigNotFound GenericError
-
-func (e BucketSSEConfigNotFound) Error() string {
-	return "No bucket encryption configuration found for bucket: " + e.Bucket
-}
-
-// BucketTaggingNotFound - no bucket tags found
-type BucketTaggingNotFound GenericError
-
-func (e BucketTaggingNotFound) Error() string {
-	return "No bucket tags found for bucket: " + e.Bucket
-}
-
-// BucketObjectLockConfigNotFound - no bucket object lock config found
-type BucketObjectLockConfigNotFound GenericError
-
-func (e BucketObjectLockConfigNotFound) Error() string {
-	return "No bucket object lock configuration found for bucket: " + e.Bucket
-}
-
-// BucketQuotaConfigNotFound - no bucket quota config found.
-type BucketQuotaConfigNotFound GenericError
-
-func (e BucketQuotaConfigNotFound) Error() string {
-	return "No quota config found for bucket : " + e.Bucket
-}
-
-// BucketQuotaExceeded - bucket quota exceeded.
-type BucketQuotaExceeded GenericError
-
-func (e BucketQuotaExceeded) Error() string {
-	return "Bucket quota exceeded for bucket: " + e.Bucket
-}
-
-// Bucket related errors.
-
-// BucketNameInvalid - bucketname provided is invalid.
-type BucketNameInvalid GenericError
-
-// Error returns string an error formatted as the given text.
-func (e BucketNameInvalid) Error() string {
-	return "Bucket name invalid: " + e.Bucket
-}
-
-// Object related errors.
-
-// ObjectNameInvalid - object name provided is invalid.
-type ObjectNameInvalid GenericError
-
-// ObjectNameTooLong - object name too long.
-type ObjectNameTooLong GenericError
-
-// ObjectNamePrefixAsSlash - object name has a slash as prefix.
-type ObjectNamePrefixAsSlash GenericError
-
-// Error returns string an error formatted as the given text.
-func (e ObjectNameInvalid) Error() string {
-	return "Object name invalid: " + e.Bucket + "#" + e.Object
-}
-
-// Error returns string an error formatted as the given text.
-func (e ObjectNameTooLong) Error() string {
-	return "Object name too long: " + e.Bucket + "#" + e.Object
-}
-
-// Error returns string an error formatted as the given text.
-func (e ObjectNamePrefixAsSlash) Error() string {
-	return "Object name contains forward slash as pefix: " + e.Bucket + "#" + e.Object
-}
-
-// AllAccessDisabled All access to this object has been disabled
-type AllAccessDisabled GenericError
-
-// Error returns string an error formatted as the given text.
-func (e AllAccessDisabled) Error() string {
-	return "All access to this object has been disabled"
-}
-
-// IncompleteBody You did not provide the number of bytes specified by the Content-Length HTTP header.
-type IncompleteBody GenericError
-
-// Error returns string an error formatted as the given text.
-func (e IncompleteBody) Error() string {
-	return e.Bucket + "#" + e.Object + "has incomplete body"
-}
-
-// InvalidRange - invalid range typed error.
-type InvalidRange struct {
-	OffsetBegin  int64
-	OffsetEnd    int64
-	ResourceSize int64
-}
-
-func (e InvalidRange) Error() string {
-	return fmt.Sprintf("The requested range \"bytes %d-%d/%d\" is not satisfiable.", e.OffsetBegin, e.OffsetEnd, e.ResourceSize)
-}
-
-// ObjectTooLarge error returned when the size of the object > max object size allowed (5G) per request.
-type ObjectTooLarge GenericError
-
-func (e ObjectTooLarge) Error() string {
-	return "size of the object greater than what is allowed(5G)"
-}
-
-// ObjectTooSmall error returned when the size of the object < what is expected.
-type ObjectTooSmall GenericError
-
-func (e ObjectTooSmall) Error() string {
-	return "size of the object less than what is expected"
-}
-
-// OperationTimedOut - a timeout occurred.
-type OperationTimedOut struct {
-}
-
-func (e OperationTimedOut) Error() string {
-	return "Operation timed out"
-}
-
-// Multipart related errors.
-
-// MalformedUploadID malformed upload id.
-type MalformedUploadID struct {
-	UploadID string
-}
-
-func (e MalformedUploadID) Error() string {
-	return "Malformed upload id " + e.UploadID
-}
-
-// InvalidUploadID invalid upload id.
-type InvalidUploadID struct {
-	Bucket   string
-	Object   string
-	UploadID string
-}
-
-func (e InvalidUploadID) Error() string {
-	return "Invalid upload id " + e.UploadID
-}
-
-// InvalidPart One or more of the specified parts could not be found
-type InvalidPart struct {
-	PartNumber int
-	ExpETag    string
-	GotETag    string
-}
-
-func (e InvalidPart) Error() string {
-	return fmt.Sprintf("Specified part could not be found. PartNumber %d, Expected %s, got %s",
-		e.PartNumber, e.ExpETag, e.GotETag)
-}
-
-// PartTooSmall - error if part size is less than 5MB.
-type PartTooSmall struct {
-	PartSize   int64
-	PartNumber int
-	PartETag   string
-}
-
-func (e PartTooSmall) Error() string {
-	return fmt.Sprintf("Part size for %d should be at least 5MB", e.PartNumber)
-}
-
-// PartTooBig returned if size of part is bigger than the allowed limit.
-type PartTooBig struct{}
-
-func (e PartTooBig) Error() string {
-	return "Part size bigger than the allowed limit"
-}
-
-// InvalidETag error returned when the etag has changed on disk
-type InvalidETag struct{}
-
-func (e InvalidETag) Error() string {
-	return "etag of the object has changed"
-}
-
-// NotImplemented If a feature is not implemented
-type NotImplemented struct{}
-
-func (e NotImplemented) Error() string {
-	return "Not Implemented"
-}
-
-// UnsupportedMetadata - unsupported metadata
-type UnsupportedMetadata struct{}
-
-func (e UnsupportedMetadata) Error() string {
-	return "Unsupported headers in Metadata"
-}
-
-// BackendDown is returned for network errors or if the gateway's backend is down.
-type BackendDown struct{}
-
-func (e BackendDown) Error() string {
-	return "Backend down"
-}
-
-// isErrBucketNotFound - Check if error type is BucketNotFound.
-func isErrBucketNotFound(err error) bool {
-	var bkNotFound BucketNotFound
-	return errors.As(err, &bkNotFound)
-}
-
-// isErrObjectNotFound - Check if error type is ObjectNotFound.
-func isErrObjectNotFound(err error) bool {
-	var objNotFound ObjectNotFound
-	return errors.As(err, &objNotFound)
-}
-
-// PreConditionFailed - Check if copy precondition failed
-type PreConditionFailed struct{}
-
-func (e PreConditionFailed) Error() string {
-	return "At least one of the pre-conditions you specified did not hold"
-}
-
-func isErrPreconditionFailed(err error) bool {
-	_, ok := err.(PreConditionFailed)
-	return ok
-}

neofs/api/storage-errors.go

@@ -1,93 +0,0 @@
-package api
-
-// errUnexpected - unexpected error, requires manual intervention.
-var errUnexpected = StorageErr("Unexpected error, please report this issue at https://github.com/minio/minio/issues")
-
-// errCorruptedFormat - corrupted backend format.
-var errCorruptedFormat = StorageErr("corrupted backend format, please join https://slack.min.io for assistance")
-
-// errUnformattedDisk - unformatted disk found.
-var errUnformattedDisk = StorageErr("unformatted disk found")
-
-// errUnsupporteDisk - when disk does not support O_DIRECT flag.
-var errUnsupportedDisk = StorageErr("disk does not support O_DIRECT")
-
-// errDiskFull - cannot create volume or files when disk is full.
-var errDiskFull = StorageErr("disk path full")
-
-// errDiskNotFound - cannot find the underlying configured disk anymore.
-var errDiskNotFound = StorageErr("disk not found")
-
-// errFaultyRemoteDisk - remote disk is faulty.
-var errFaultyRemoteDisk = StorageErr("remote disk is faulty")
-
-// errFaultyDisk - disk is faulty.
-var errFaultyDisk = StorageErr("disk is faulty")
-
-// errDiskAccessDenied - we don't have write permissions on disk.
-var errDiskAccessDenied = StorageErr("disk access denied")
-
-// errFileNotFound - cannot find the file.
-var errFileNotFound = StorageErr("file not found")
-
-// errTooManyOpenFiles - too many open files.
-var errTooManyOpenFiles = StorageErr("too many open files")
-
-// errFileNameTooLong - given file name is too long than supported length.
-var errFileNameTooLong = StorageErr("file name too long")
-
-// errVolumeExists - cannot create same volume again.
-var errVolumeExists = StorageErr("volume already exists")
-
-// errIsNotRegular - not of regular file type.
-var errIsNotRegular = StorageErr("not of regular file type")
-
-// errVolumeNotFound - cannot find the volume.
-var errVolumeNotFound = StorageErr("volume not found")
-
-// errVolumeNotEmpty - volume not empty.
-var errVolumeNotEmpty = StorageErr("volume is not empty")
-
-// errVolumeAccessDenied - cannot access volume, insufficient permissions.
-var errVolumeAccessDenied = StorageErr("volume access denied")
-
-// errFileAccessDenied - cannot access file, insufficient permissions.
-var errFileAccessDenied = StorageErr("file access denied")
-
-// errFileCorrupt - file has an unexpected size, or is not readable
-var errFileCorrupt = StorageErr("file is corrupted")
-
-// errFileParentIsFile - cannot have overlapping objects, parent is already a file.
-var errFileParentIsFile = StorageErr("parent is a file")
-
-// errBitrotHashAlgoInvalid - the algo for bit-rot hash
-// verification is empty or invalid.
-var errBitrotHashAlgoInvalid = StorageErr("bit-rot hash algorithm is invalid")
-
-// errCrossDeviceLink - rename across devices not allowed.
-var errCrossDeviceLink = StorageErr("Rename across devices not allowed, please fix your backend configuration")
-
-// errMinDiskSize - cannot create volume or files when disk size is less than threshold.
-var errMinDiskSize = StorageErr("The disk size is less than 900MiB threshold")
-
-// errLessData - returned when less data available than what was requested.
-var errLessData = StorageErr("less data available than what was requested")
-
-// errMoreData = returned when more data was sent by the caller than what it was supposed to.
-var errMoreData = StorageErr("more data was sent than what was advertised")
-
-// StorageErr represents error generated by posix call.
-type StorageErr string
-
-func (h StorageErr) Error() string {
-	return string(h)
-}
-
-// Collection of basic errors.
-var baseErrs = []error{
-	errDiskNotFound,
-	errFaultyDisk,
-	errFaultyRemoteDisk,
-}
-
-var baseIgnoredErrs = baseErrs

neofs/api/typed-errors.go

@@ -1,107 +0,0 @@
-package api
-
-import (
-	"github.com/pkg/errors"
-)
-
-// errInvalidArgument means that input argument is invalid.
-var errInvalidArgument = errors.New("Invalid arguments specified")
-
-// errMethodNotAllowed means that method is not allowed.
-var errMethodNotAllowed = errors.New("Method not allowed")
-
-// errSignatureMismatch means signature did not match.
-var errSignatureMismatch = errors.New("Signature does not match")
-
-// used when we deal with data larger than expected
-var errSizeUnexpected = errors.New("Data size larger than expected")
-
-// used when we deal with data with unknown size
-var errSizeUnspecified = errors.New("Data size is unspecified")
-
-// When upload object size is greater than 5G in a single PUT/POST operation.
-var errDataTooLarge = errors.New("Object size larger than allowed limit")
-
-// When upload object size is less than what was expected.
-var errDataTooSmall = errors.New("Object size smaller than expected")
-
-// errServerNotInitialized - server not initialized.
-var errServerNotInitialized = errors.New("Server not initialized, please try again")
-
-// errRPCAPIVersionUnsupported - unsupported rpc API version.
-var errRPCAPIVersionUnsupported = errors.New("Unsupported rpc API version")
-
-// errServerTimeMismatch - server times are too far apart.
-var errServerTimeMismatch = errors.New("Server times are too far apart")
-
-// errInvalidBucketName - bucket name is reserved for MinIO, usually
-// returned for 'minio', '.minio.sys', buckets with capital letters.
-var errInvalidBucketName = errors.New("The specified bucket is not valid")
-
-// errInvalidRange - returned when given range value is not valid.
-var errInvalidRange = errors.New("Invalid range")
-
-// errInvalidRangeSource - returned when given range value exceeds
-// the source object size.
-var errInvalidRangeSource = errors.New("Range specified exceeds source object size")
-
-// error returned by disks which are to be initialized are waiting for the
-// first server to initialize them in distributed set to initialize them.
-var errNotFirstDisk = errors.New("Not first disk")
-
-// error returned by first disk waiting to initialize other servers.
-var errFirstDiskWait = errors.New("Waiting on other disks")
-
-// error returned when a bucket already exists
-var errBucketAlreadyExists = errors.New("Your previous request to create the named bucket succeeded and you already own it")
-
-// error returned for a negative actual size.
-var errInvalidDecompressedSize = errors.New("Invalid Decompressed Size")
-
-// error returned in IAM subsystem when user doesn't exist.
-var errNoSuchUser = errors.New("Specified user does not exist")
-
-// error returned in IAM subsystem when groups doesn't exist.
-var errNoSuchGroup = errors.New("Specified group does not exist")
-
-// error returned in IAM subsystem when a non-empty group needs to be
-// deleted.
-var errGroupNotEmpty = errors.New("Specified group is not empty - cannot remove it")
-
-// error returned in IAM subsystem when policy doesn't exist.
-var errNoSuchPolicy = errors.New("Specified canned policy does not exist")
-
-// error returned in IAM subsystem when an external users systems is configured.
-var errIAMActionNotAllowed = errors.New("Specified IAM action is not allowed with LDAP configuration")
-
-// error returned in IAM subsystem when IAM sub-system is still being initialized.
-var errIAMNotInitialized = errors.New("IAM sub-system is being initialized, please try again")
-
-// error returned when access is denied.
-var errAccessDenied = errors.New("Do not have enough permissions to access this resource")
-
-// error returned when object is locked.
-var errLockedObject = errors.New("Object is WORM protected and cannot be overwritten or deleted")
-
-var (
-	errInvalidAccessKeyID   = errors.New("The access key ID you provided does not exist in our records")
-	errChangeCredNotAllowed = errors.New("Changing access key and secret key not allowed")
-	errAuthentication       = errors.New("Authentication failed, check your access credentials")
-	errNoAuthToken          = errors.New("JWT token missing")
-	errIncorrectCreds       = errors.New("Current access key or secret key is incorrect")
-	errPresignedNotAllowed  = errors.New("Unable to generate shareable URL due to lack of read permissions")
-)
-
-var (
-	// AWS errors for invalid SSE-C requests.
-	errEncryptedObject      = errors.New("The object was stored using a form of SSE")
-	errInvalidSSEParameters = errors.New("The SSE-C key for key-rotation is not correct") // special access denied
-	errKMSNotConfigured     = errors.New("KMS not configured for a server side encrypted object")
-	// Additional MinIO errors for SSE-C requests.
-	errObjectTampered = errors.New("The requested object was modified and may be compromised")
-	// error returned when invalid encryption parameters are specified
-	errInvalidEncryptionParameters = errors.New("The encryption parameters are not applicable to this object")
-)
-
-// ErrNoEntriesFound - Indicates no entries were found for the given key (directory)
-var ErrNoEntriesFound = errors.New("No entries found for this key")

neofs/api/xl-v1-errors.go

@@ -1,12 +0,0 @@
-package api
-
-import "errors"
-
-// errXLReadQuorum - did not meet read quorum.
-var errXLReadQuorum = errors.New("Read failed. Insufficient number of disks online")
-
-// errXLWriteQuorum - did not meet write quorum.
-var errXLWriteQuorum = errors.New("Write failed. Insufficient number of disks online")
-
-// errNoHealRequired - returned when healing is attempted on a previously healed disks.
-var errNoHealRequired = errors.New("No healing is required")