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/*
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* Minio Cloud Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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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
}
```
9 years ago
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package main
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import (
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"fmt"
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"io"
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)
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// Converts underlying storage error. Convenience function written to
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// handle all cases where we have known types of errors returned by
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// underlying storage layer.
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func toObjectErr(err error, params ...string) error {
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switch err {
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case errVolumeNotFound:
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if len(params) >= 1 {
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return BucketNotFound{Bucket: params[0]}
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}
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case errVolumeNotEmpty:
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if len(params) >= 1 {
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return BucketNotEmpty{Bucket: params[0]}
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}
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case errVolumeExists:
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if len(params) >= 1 {
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return BucketExists{Bucket: params[0]}
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}
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case errDiskFull:
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return StorageFull{}
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case errReadQuorum:
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return InsufficientReadQuorum{}
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case errWriteQuorum:
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return InsufficientWriteQuorum{}
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case errIsNotRegular, errFileAccessDenied:
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if len(params) >= 2 {
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return ObjectExistsAsPrefix{
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Bucket: params[0],
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Object: params[1],
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}
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}
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case errFileNotFound:
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if len(params) >= 2 {
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return ObjectNotFound{
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Bucket: params[0],
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Object: params[1],
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}
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}
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case io.ErrUnexpectedEOF, io.ErrShortWrite:
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return IncompleteBody{}
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}
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return err
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}
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// StorageFull storage ran out of space.
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type StorageFull struct{}
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func (e StorageFull) Error() string {
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return "Storage reached its minimum free disk threshold."
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}
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// InsufficientReadQuorum storage cannot satisfy quorum for read operation.
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type InsufficientReadQuorum struct{}
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func (e InsufficientReadQuorum) Error() string {
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return "Storage resources are insufficient for the read operation."
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}
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// InsufficientWriteQuorum storage cannot satisfy quorum for write operation.
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type InsufficientWriteQuorum struct{}
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func (e InsufficientWriteQuorum) Error() string {
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return "Storage resources are insufficient for the write operation."
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}
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// GenericError - generic object layer error.
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type GenericError struct {
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Bucket string
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Object string
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}
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// BucketNotFound bucket does not exist.
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type BucketNotFound GenericError
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func (e BucketNotFound) Error() string {
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return "Bucket not found: " + e.Bucket
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}
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// BucketNotEmpty bucket is not empty.
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type BucketNotEmpty GenericError
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func (e BucketNotEmpty) Error() string {
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return "Bucket not empty: " + e.Bucket
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}
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// ObjectNotFound object does not exist.
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type ObjectNotFound GenericError
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func (e ObjectNotFound) Error() string {
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return "Object not found: " + e.Bucket + "#" + e.Object
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}
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// ObjectExistsAsPrefix object already exists with a requested prefix.
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type ObjectExistsAsPrefix GenericError
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func (e ObjectExistsAsPrefix) Error() string {
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return "Object exists on : " + e.Bucket + " as prefix " + e.Object
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}
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// BucketExists bucket exists.
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type BucketExists GenericError
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func (e BucketExists) Error() string {
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return "Bucket exists: " + e.Bucket
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}
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// BadDigest - Content-MD5 you specified did not match what we received.
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type BadDigest struct {
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ExpectedMD5 string
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CalculatedMD5 string
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}
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func (e BadDigest) Error() string {
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return "Bad digest: Expected " + e.ExpectedMD5 + " is not valid with what we calculated " + e.CalculatedMD5
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}
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// UnsupportedDelimiter - unsupported delimiter.
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type UnsupportedDelimiter struct {
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Delimiter string
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}
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func (e UnsupportedDelimiter) Error() string {
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return fmt.Sprintf("delimiter '%s' is not supported. Only '/' is supported", e.Delimiter)
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}
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// InvalidUploadIDKeyCombination - invalid upload id and key marker combination.
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type InvalidUploadIDKeyCombination struct {
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UploadIDMarker, KeyMarker string
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}
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func (e InvalidUploadIDKeyCombination) Error() string {
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return fmt.Sprintf("Invalid combination of uploadID marker '%s' and marker '%s'", e.UploadIDMarker, e.KeyMarker)
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}
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// InvalidMarkerPrefixCombination - invalid marker and prefix combination.
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type InvalidMarkerPrefixCombination struct {
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Marker, Prefix string
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}
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func (e InvalidMarkerPrefixCombination) Error() string {
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return fmt.Sprintf("Invalid combination of marker '%s' and prefix '%s'", e.Marker, e.Prefix)
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}
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accessPolicy: Implement Put, Get, Delete access policy.
This patch implements Get,Put,Delete bucket policies
Supporting - http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-language-overview.html
Currently supports following actions.
"*": true,
"s3:*": true,
"s3:GetObject": true,
"s3:ListBucket": true,
"s3:PutObject": true,
"s3:CreateBucket": true,
"s3:GetBucketLocation": true,
"s3:DeleteBucket": true,
"s3:DeleteObject": true,
"s3:AbortMultipartUpload": true,
"s3:ListBucketMultipartUploads": true,
"s3:ListMultipartUploadParts": true,
following conditions for "StringEquals" and "StringNotEquals"
"s3:prefix", "s3:max-keys"
9 years ago
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// BucketPolicyNotFound - no bucket policy found.
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type BucketPolicyNotFound GenericError
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accessPolicy: Implement Put, Get, Delete access policy.
This patch implements Get,Put,Delete bucket policies
Supporting - http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-language-overview.html
Currently supports following actions.
"*": true,
"s3:*": true,
"s3:GetObject": true,
"s3:ListBucket": true,
"s3:PutObject": true,
"s3:CreateBucket": true,
"s3:GetBucketLocation": true,
"s3:DeleteBucket": true,
"s3:DeleteObject": true,
"s3:AbortMultipartUpload": true,
"s3:ListBucketMultipartUploads": true,
"s3:ListMultipartUploadParts": true,
following conditions for "StringEquals" and "StringNotEquals"
"s3:prefix", "s3:max-keys"
9 years ago
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func (e BucketPolicyNotFound) Error() string {
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return "No bucket policy found for bucket: " + e.Bucket
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}
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/// Bucket related errors.
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// BucketNameInvalid - bucketname provided is invalid.
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type BucketNameInvalid GenericError
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// Return string an error formatted as the given text.
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func (e BucketNameInvalid) Error() string {
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return "Bucket name invalid: " + e.Bucket
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}
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/// Object related errors.
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// ObjectNameInvalid - object name provided is invalid.
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type ObjectNameInvalid GenericError
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// Return string an error formatted as the given text.
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func (e ObjectNameInvalid) Error() string {
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return "Object name invalid: " + e.Bucket + "#" + e.Object
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}
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// UnExpectedDataSize - Reader contains more/less data than specified.
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type UnExpectedDataSize struct {
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Size int
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}
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func (e UnExpectedDataSize) Error() string {
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return fmt.Sprintf("Contains more data than specified size of %d bytes.", e.Size)
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}
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// IncompleteBody You did not provide the number of bytes specified by the Content-Length HTTP header.
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type IncompleteBody GenericError
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// Return string an error formatted as the given text.
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func (e IncompleteBody) Error() string {
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return e.Bucket + "#" + e.Object + "has incomplete body"
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}
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/// Multipart related errors.
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// MalformedUploadID malformed upload id.
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type MalformedUploadID struct {
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UploadID string
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}
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func (e MalformedUploadID) Error() string {
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return "Malformed upload id " + e.UploadID
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}
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// InvalidUploadID invalid upload id.
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type InvalidUploadID struct {
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UploadID string
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}
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func (e InvalidUploadID) Error() string {
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return "Invalid upload id " + e.UploadID
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}
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// InvalidPart One or more of the specified parts could not be found
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type InvalidPart struct{}
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func (e InvalidPart) Error() string {
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return "One or more of the specified parts could not be found"
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}
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