minio/fs-errors.go
Harshavardhana efc80343e3 fs: Break fs package to top-level and introduce ObjectAPI interface.
ObjectAPI interface brings in changes needed for XL ObjectAPI layer.

The new interface for any ObjectAPI layer is as below

```
// ObjectAPI interface.
type ObjectAPI interface {
        // Bucket resource API.
        DeleteBucket(bucket string) *probe.Error
        ListBuckets() ([]BucketInfo, *probe.Error)
        MakeBucket(bucket string) *probe.Error
        GetBucketInfo(bucket string) (BucketInfo, *probe.Error)

        // Bucket query API.
        ListObjects(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsResult, *probe.Error)
        ListMultipartUploads(bucket string, resources BucketMultipartResourcesMetadata) (BucketMultipartResourcesMetadata, *probe.Error)

        // Object resource API.
        GetObject(bucket, object string, startOffset int64) (io.ReadCloser, *probe.Error)
        GetObjectInfo(bucket, object string) (ObjectInfo, *probe.Error)
        PutObject(bucket string, object string, size int64, data io.Reader, metadata map[string]string) (ObjectInfo, *probe.Error)
        DeleteObject(bucket, object string) *probe.Error

        // Object query API.
        NewMultipartUpload(bucket, object string) (string, *probe.Error)
        PutObjectPart(bucket, object, uploadID string, partID int, size int64, data io.Reader, md5Hex string) (string, *probe.Error)
        ListObjectParts(bucket, object string, resources ObjectResourcesMetadata) (ObjectResourcesMetadata, *probe.Error)
        CompleteMultipartUpload(bucket string, object string, uploadID string, parts []CompletePart) (ObjectInfo, *probe.Error)
        AbortMultipartUpload(bucket, object, uploadID string) *probe.Error
}
```
2016-04-01 15:58:39 -07:00

296 lines
6.9 KiB
Go

/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import "fmt"
// InvalidArgument invalid argument
type InvalidArgument struct{}
func (e InvalidArgument) Error() string {
return "Invalid argument"
}
// UnsupportedFilesystem unsupported filesystem type
type UnsupportedFilesystem struct {
Type string
}
func (e UnsupportedFilesystem) Error() string {
return "Unsupported filesystem: " + e.Type
}
// RootPathFull root path out of space
type RootPathFull struct {
Path string
}
func (e RootPathFull) Error() string {
return "Root path " + e.Path + " reached its minimum free disk threshold."
}
// BucketNotFound bucket does not exist
type BucketNotFound struct {
Bucket string
}
func (e BucketNotFound) Error() string {
return "Bucket not found: " + e.Bucket
}
// BucketNotEmpty bucket is not empty
type BucketNotEmpty struct {
Bucket string
}
func (e BucketNotEmpty) Error() string {
return "Bucket not empty: " + e.Bucket
}
// ObjectNotFound object does not exist
type ObjectNotFound struct {
Bucket string
Object string
}
func (e ObjectNotFound) Error() string {
return "Object not found: " + e.Bucket + "#" + e.Object
}
// ObjectExistsAsPrefix object already exists with a requested prefix.
type ObjectExistsAsPrefix struct {
Bucket string
Prefix string
}
func (e ObjectExistsAsPrefix) Error() string {
return "Object exists on : " + e.Bucket + " as prefix " + e.Prefix
}
// ObjectCorrupted object found to be corrupted
type ObjectCorrupted struct {
Object string
}
func (e ObjectCorrupted) Error() string {
return "Object found corrupted: " + e.Object
}
// BucketExists bucket exists
type BucketExists struct {
Bucket string
}
func (e BucketExists) Error() string {
return "Bucket exists: " + e.Bucket
}
// CorruptedBackend backend found to be corrupted
type CorruptedBackend struct {
Backend string
}
func (e CorruptedBackend) Error() string {
return "Corrupted backend: " + e.Backend
}
// NotImplemented function not implemented
type NotImplemented struct {
Function string
}
func (e NotImplemented) Error() string {
return "Not implemented: " + e.Function
}
// InvalidDisksArgument invalid number of disks per node
type InvalidDisksArgument struct{}
func (e InvalidDisksArgument) Error() string {
return "Invalid number of disks per node"
}
// BadDigest - Content-MD5 you specified did not match what we received.
type BadDigest struct {
ExpectedMD5 string
CalculatedMD5 string
}
func (e BadDigest) Error() string {
return "Bad digest expected " + e.ExpectedMD5 + " is not valid with what we calculated " + e.CalculatedMD5
}
// InternalError - generic internal error
type InternalError struct{}
// BackendError - generic disk backend error
type BackendError struct {
Path string
}
// BackendCorrupted - path has corrupted data
type BackendCorrupted BackendError
// APINotImplemented - generic API not implemented error
type APINotImplemented struct {
API string
}
// GenericBucketError - generic bucket error
type GenericBucketError struct {
Bucket string
}
// BucketPolicyNotFound - no bucket policy found.
type BucketPolicyNotFound GenericBucketError
func (e BucketPolicyNotFound) Error() string {
return "No bucket policy found for bucket: " + e.Bucket
}
// GenericObjectError - generic object error
type GenericObjectError struct {
Bucket string
Object string
}
// ImplementationError - generic implementation error
type ImplementationError struct {
Bucket string
Object string
Err error
}
/// Bucket related errors
// BucketNameInvalid - bucketname provided is invalid
type BucketNameInvalid GenericBucketError
/// Object related errors
// ObjectNameInvalid - object name provided is invalid
type ObjectNameInvalid GenericObjectError
// Return string an error formatted as the given text
func (e ImplementationError) Error() string {
error := ""
if e.Bucket != "" {
error = error + "Bucket: " + e.Bucket + " "
}
if e.Object != "" {
error = error + "Object: " + e.Object + " "
}
error = error + "Error: " + e.Err.Error()
return error
}
// EmbedError - wrapper function for error object
func EmbedError(bucket, object string, err error) ImplementationError {
return ImplementationError{
Bucket: bucket,
Object: object,
Err: err,
}
}
// Return string an error formatted as the given text
func (e InternalError) Error() string {
return "Internal error occured"
}
// Return string an error formatted as the given text
func (e APINotImplemented) Error() string {
return "Api not implemented: " + e.API
}
// Return string an error formatted as the given text
func (e BucketNameInvalid) Error() string {
return "Bucket name invalid: " + e.Bucket
}
// Return string an error formatted as the given text
func (e ObjectNameInvalid) Error() string {
return "Object name invalid: " + e.Bucket + "#" + e.Object
}
// IncompleteBody You did not provide the number of bytes specified by the Content-Length HTTP header
type IncompleteBody GenericObjectError
// Return string an error formatted as the given text
func (e IncompleteBody) Error() string {
return e.Bucket + "#" + e.Object + "has incomplete body"
}
// Return string an error formatted as the given text
func (e BackendCorrupted) Error() string {
return "Backend corrupted: " + e.Path
}
// OperationNotPermitted - operation not permitted
type OperationNotPermitted struct {
Op string
Reason string
}
func (e OperationNotPermitted) Error() string {
return "Operation " + e.Op + " not permitted for reason: " + e.Reason
}
// InvalidRange - invalid range
type InvalidRange struct {
Start int64
Length int64
}
func (e InvalidRange) Error() string {
return fmt.Sprintf("Invalid range start:%d length:%d", e.Start, e.Length)
}
/// Multipart related errors
// InvalidUploadID invalid upload id
type InvalidUploadID struct {
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{}
func (e InvalidPart) Error() string {
return "One or more of the specified parts could not be found"
}
// InvalidPartOrder parts are not ordered as Requested
type InvalidPartOrder struct {
UploadID string
}
func (e InvalidPartOrder) Error() string {
return "Invalid part order sent for " + e.UploadID
}
// MalformedXML invalid xml format
type MalformedXML struct{}
func (e MalformedXML) Error() string {
return "Malformed XML"
}