commit
06e3171076
@ -1,56 +0,0 @@ |
||||
/* |
||||
* Minio Cloud Storage, (C) 2015, 2016 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 ( |
||||
"github.com/minio/minio/pkg/probe" |
||||
"github.com/minio/minio/pkg/quick" |
||||
) |
||||
|
||||
var multipartsMetadataPath string |
||||
|
||||
// SetFSMultipartsMetadataPath - set custom multiparts session metadata path.
|
||||
func setFSMultipartsMetadataPath(metadataPath string) { |
||||
multipartsMetadataPath = metadataPath |
||||
} |
||||
|
||||
// saveMultipartsSession - save multiparts.
|
||||
func saveMultipartsSession(mparts multiparts) *probe.Error { |
||||
qc, err := quick.New(mparts) |
||||
if err != nil { |
||||
return err.Trace() |
||||
} |
||||
if err := qc.Save(multipartsMetadataPath); err != nil { |
||||
return err.Trace() |
||||
} |
||||
return nil |
||||
} |
||||
|
||||
// loadMultipartsSession load multipart session file.
|
||||
func loadMultipartsSession() (*multiparts, *probe.Error) { |
||||
mparts := &multiparts{} |
||||
mparts.Version = "1" |
||||
mparts.ActiveSession = make(map[string]*multipartSession) |
||||
qc, err := quick.New(mparts) |
||||
if err != nil { |
||||
return nil, err.Trace() |
||||
} |
||||
if err := qc.Load(multipartsMetadataPath); err != nil { |
||||
return nil, err.Trace() |
||||
} |
||||
return qc.Data().(*multiparts), nil |
||||
} |
@ -0,0 +1,395 @@ |
||||
/* |
||||
* Minio Cloud Storage, (C) 2016 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 ( |
||||
"errors" |
||||
"io" |
||||
"os" |
||||
"path/filepath" |
||||
"sort" |
||||
"strings" |
||||
"time" |
||||
) |
||||
|
||||
// DirEntry - directory entry
|
||||
type DirEntry struct { |
||||
Name string |
||||
Size int64 |
||||
Mode os.FileMode |
||||
ModTime time.Time |
||||
} |
||||
|
||||
// IsDir - returns true if DirEntry is a directory
|
||||
func (entry DirEntry) IsDir() bool { |
||||
return entry.Mode.IsDir() |
||||
} |
||||
|
||||
// IsSymlink - returns true if DirEntry is a symbolic link
|
||||
func (entry DirEntry) IsSymlink() bool { |
||||
return entry.Mode&os.ModeSymlink == os.ModeSymlink |
||||
} |
||||
|
||||
// IsRegular - returns true if DirEntry is a regular file
|
||||
func (entry DirEntry) IsRegular() bool { |
||||
return entry.Mode.IsRegular() |
||||
} |
||||
|
||||
// sort interface for DirEntry slice
|
||||
type byEntryName []DirEntry |
||||
|
||||
func (f byEntryName) Len() int { return len(f) } |
||||
func (f byEntryName) Swap(i, j int) { f[i], f[j] = f[j], f[i] } |
||||
func (f byEntryName) Less(i, j int) bool { return f[i].Name < f[j].Name } |
||||
|
||||
func filteredReaddir(dirname string, filter func(DirEntry) bool, appendPath bool) ([]DirEntry, error) { |
||||
result := []DirEntry{} |
||||
|
||||
d, err := os.Open(dirname) |
||||
if err != nil { |
||||
return result, err |
||||
} |
||||
|
||||
defer d.Close() |
||||
|
||||
for { |
||||
fis, err := d.Readdir(1000) |
||||
if err != nil { |
||||
if err == io.EOF { |
||||
break |
||||
} |
||||
|
||||
return result, err |
||||
} |
||||
|
||||
for _, fi := range fis { |
||||
name := fi.Name() |
||||
if appendPath { |
||||
name = filepath.Join(dirname, name) |
||||
} |
||||
|
||||
if fi.IsDir() { |
||||
name += string(os.PathSeparator) |
||||
} |
||||
|
||||
entry := DirEntry{Name: name, Size: fi.Size(), Mode: fi.Mode(), ModTime: fi.ModTime()} |
||||
|
||||
if filter == nil || filter(entry) { |
||||
result = append(result, entry) |
||||
} |
||||
} |
||||
} |
||||
|
||||
sort.Sort(byEntryName(result)) |
||||
|
||||
return result, nil |
||||
} |
||||
|
||||
func filteredReaddirnames(dirname string, filter func(string) bool) ([]string, error) { |
||||
result := []string{} |
||||
d, err := os.Open(dirname) |
||||
if err != nil { |
||||
return result, err |
||||
} |
||||
|
||||
defer d.Close() |
||||
|
||||
for { |
||||
names, err := d.Readdirnames(1000) |
||||
if err != nil { |
||||
if err == io.EOF { |
||||
break |
||||
} |
||||
|
||||
return result, err |
||||
} |
||||
|
||||
for _, name := range names { |
||||
if filter == nil || filter(name) { |
||||
result = append(result, name) |
||||
} |
||||
} |
||||
} |
||||
|
||||
sort.Strings(result) |
||||
|
||||
return result, nil |
||||
} |
||||
|
||||
func scanMultipartDir(bucketDir, prefixPath, markerPath, uploadIDMarker string, recursive bool) multipartObjectInfoChannel { |
||||
objectInfoCh := make(chan multipartObjectInfo, listObjectsLimit) |
||||
timeoutCh := make(chan struct{}, 1) |
||||
|
||||
// TODO: check if bucketDir is absolute path
|
||||
scanDir := bucketDir |
||||
dirDepth := bucketDir |
||||
|
||||
if prefixPath != "" { |
||||
if !filepath.IsAbs(prefixPath) { |
||||
tmpPrefixPath := filepath.Join(bucketDir, prefixPath) |
||||
if strings.HasSuffix(prefixPath, string(os.PathSeparator)) { |
||||
tmpPrefixPath += string(os.PathSeparator) |
||||
} |
||||
prefixPath = tmpPrefixPath |
||||
} |
||||
|
||||
// TODO: check if prefixPath starts with bucketDir
|
||||
|
||||
// Case #1: if prefixPath is /mnt/mys3/mybucket/2012/photos/paris, then
|
||||
// dirDepth is /mnt/mys3/mybucket/2012/photos
|
||||
// Case #2: if prefixPath is /mnt/mys3/mybucket/2012/photos/, then
|
||||
// dirDepth is /mnt/mys3/mybucket/2012/photos
|
||||
dirDepth = filepath.Dir(prefixPath) |
||||
scanDir = dirDepth |
||||
} else { |
||||
prefixPath = bucketDir |
||||
} |
||||
|
||||
if markerPath != "" { |
||||
if !filepath.IsAbs(markerPath) { |
||||
tmpMarkerPath := filepath.Join(bucketDir, markerPath) |
||||
if strings.HasSuffix(markerPath, string(os.PathSeparator)) { |
||||
tmpMarkerPath += string(os.PathSeparator) |
||||
} |
||||
|
||||
markerPath = tmpMarkerPath |
||||
} |
||||
|
||||
// TODO: check markerPath must be a file
|
||||
if uploadIDMarker != "" { |
||||
markerPath = filepath.Join(markerPath, uploadIDMarker+uploadIDSuffix) |
||||
} |
||||
|
||||
// TODO: check if markerPath starts with bucketDir
|
||||
// TODO: check if markerPath starts with prefixPath
|
||||
|
||||
// Case #1: if markerPath is /mnt/mys3/mybucket/2012/photos/gophercon.png, then
|
||||
// scanDir is /mnt/mys3/mybucket/2012/photos
|
||||
// Case #2: if markerPath is /mnt/mys3/mybucket/2012/photos/gophercon.png/1fbd117a-268a-4ed0-85c9-8cc3888cbf20.uploadid, then
|
||||
// scanDir is /mnt/mys3/mybucket/2012/photos/gophercon.png
|
||||
// Case #3: if markerPath is /mnt/mys3/mybucket/2012/photos/, then
|
||||
// scanDir is /mnt/mys3/mybucket/2012/photos
|
||||
|
||||
scanDir = filepath.Dir(markerPath) |
||||
} else { |
||||
markerPath = bucketDir |
||||
} |
||||
|
||||
// Have bucketDir ends with os.PathSeparator
|
||||
if !strings.HasSuffix(bucketDir, string(os.PathSeparator)) { |
||||
bucketDir += string(os.PathSeparator) |
||||
} |
||||
|
||||
// Remove os.PathSeparator if scanDir ends with
|
||||
if strings.HasSuffix(scanDir, string(os.PathSeparator)) { |
||||
scanDir = filepath.Dir(scanDir) |
||||
} |
||||
|
||||
// goroutine - retrieves directory entries, makes ObjectInfo and sends into the channel.
|
||||
go func() { |
||||
defer close(objectInfoCh) |
||||
defer close(timeoutCh) |
||||
|
||||
// send function - returns true if ObjectInfo is sent
|
||||
// within (time.Second * 15) else false on timeout.
|
||||
send := func(oi multipartObjectInfo) bool { |
||||
timer := time.After(time.Second * 15) |
||||
select { |
||||
case objectInfoCh <- oi: |
||||
return true |
||||
case <-timer: |
||||
timeoutCh <- struct{}{} |
||||
return false |
||||
} |
||||
} |
||||
|
||||
for { |
||||
entries, err := filteredReaddir(scanDir, |
||||
func(entry DirEntry) bool { |
||||
if entry.IsDir() || (entry.IsRegular() && strings.HasSuffix(entry.Name, uploadIDSuffix)) { |
||||
return strings.HasPrefix(entry.Name, prefixPath) && entry.Name > markerPath |
||||
} |
||||
|
||||
return false |
||||
}, |
||||
true) |
||||
if err != nil { |
||||
send(multipartObjectInfo{Err: err}) |
||||
return |
||||
} |
||||
|
||||
var entry DirEntry |
||||
for len(entries) > 0 { |
||||
entry, entries = entries[0], entries[1:] |
||||
|
||||
if entry.IsRegular() { |
||||
// Handle uploadid file
|
||||
name := strings.Replace(filepath.Dir(entry.Name), bucketDir, "", 1) |
||||
if name == "" { |
||||
// This should not happen ie uploadid file should not be in bucket directory
|
||||
send(multipartObjectInfo{Err: errors.New("corrupted meta data")}) |
||||
return |
||||
} |
||||
|
||||
uploadID := strings.Split(filepath.Base(entry.Name), uploadIDSuffix)[0] |
||||
|
||||
objInfo := multipartObjectInfo{ |
||||
Name: name, |
||||
UploadID: uploadID, |
||||
ModifiedTime: entry.ModTime, |
||||
} |
||||
|
||||
if !send(objInfo) { |
||||
return |
||||
} |
||||
|
||||
continue |
||||
} |
||||
|
||||
subentries, err := filteredReaddir(entry.Name, |
||||
func(entry DirEntry) bool { |
||||
return entry.IsDir() || (entry.IsRegular() && strings.HasSuffix(entry.Name, uploadIDSuffix)) |
||||
}, |
||||
true) |
||||
if err != nil { |
||||
send(multipartObjectInfo{Err: err}) |
||||
return |
||||
} |
||||
|
||||
subDirFound := false |
||||
uploadIDEntries := []DirEntry{} |
||||
// If subentries has a directory, then current entry needs to be sent
|
||||
for _, subentry := range subentries { |
||||
if subentry.IsDir() { |
||||
subDirFound = true |
||||
|
||||
if recursive { |
||||
break |
||||
} |
||||
} |
||||
|
||||
if !recursive && subentry.IsRegular() { |
||||
uploadIDEntries = append(uploadIDEntries, subentry) |
||||
} |
||||
} |
||||
|
||||
if subDirFound || len(subentries) == 0 { |
||||
objInfo := multipartObjectInfo{ |
||||
Name: strings.Replace(entry.Name, bucketDir, "", 1), |
||||
ModifiedTime: entry.ModTime, |
||||
IsDir: true, |
||||
} |
||||
|
||||
if !send(objInfo) { |
||||
return |
||||
} |
||||
} |
||||
|
||||
if recursive { |
||||
entries = append(subentries, entries...) |
||||
} else { |
||||
entries = append(uploadIDEntries, entries...) |
||||
} |
||||
} |
||||
|
||||
if !recursive { |
||||
break |
||||
} |
||||
|
||||
markerPath = scanDir + string(os.PathSeparator) |
||||
|
||||
if scanDir = filepath.Dir(scanDir); scanDir < dirDepth { |
||||
break |
||||
} |
||||
} |
||||
}() |
||||
|
||||
return multipartObjectInfoChannel{ch: objectInfoCh, timeoutCh: timeoutCh} |
||||
} |
||||
|
||||
// multipartObjectInfo - Multipart object info
|
||||
type multipartObjectInfo struct { |
||||
Name string |
||||
UploadID string |
||||
ModifiedTime time.Time |
||||
IsDir bool |
||||
Err error |
||||
} |
||||
|
||||
// multipartObjectInfoChannel - multipart object info channel
|
||||
type multipartObjectInfoChannel struct { |
||||
ch <-chan multipartObjectInfo |
||||
objInfo *multipartObjectInfo |
||||
closed bool |
||||
timeoutCh <-chan struct{} |
||||
timedOut bool |
||||
} |
||||
|
||||
func (oic *multipartObjectInfoChannel) Read() (multipartObjectInfo, bool) { |
||||
if oic.closed { |
||||
return multipartObjectInfo{}, false |
||||
} |
||||
|
||||
if oic.objInfo == nil { |
||||
// First read.
|
||||
if oi, ok := <-oic.ch; ok { |
||||
oic.objInfo = &oi |
||||
} else { |
||||
oic.closed = true |
||||
return multipartObjectInfo{}, false |
||||
} |
||||
} |
||||
|
||||
retObjInfo := *oic.objInfo |
||||
status := true |
||||
oic.objInfo = nil |
||||
|
||||
// Read once more to know whether it was last read.
|
||||
if oi, ok := <-oic.ch; ok { |
||||
oic.objInfo = &oi |
||||
} else { |
||||
oic.closed = true |
||||
} |
||||
|
||||
return retObjInfo, status |
||||
} |
||||
|
||||
// IsClosed - return whether channel is closed or not.
|
||||
func (oic multipartObjectInfoChannel) IsClosed() bool { |
||||
if oic.objInfo != nil { |
||||
return false |
||||
} |
||||
return oic.closed |
||||
} |
||||
|
||||
// IsTimedOut - return whether channel is closed due to timeout.
|
||||
func (oic multipartObjectInfoChannel) IsTimedOut() bool { |
||||
if oic.timedOut { |
||||
return true |
||||
} |
||||
|
||||
select { |
||||
case _, ok := <-oic.timeoutCh: |
||||
if ok { |
||||
oic.timedOut = true |
||||
return true |
||||
} |
||||
return false |
||||
default: |
||||
return false |
||||
} |
||||
} |
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,202 @@ |
||||
Apache License |
||||
Version 2.0, January 2004 |
||||
http://www.apache.org/licenses/ |
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION |
||||
|
||||
1. Definitions. |
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction, |
||||
and distribution as defined by Sections 1 through 9 of this document. |
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by |
||||
the copyright owner that is granting the License. |
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all |
||||
other entities that control, are controlled by, or are under common |
||||
control with that entity. For the purposes of this definition, |
||||
"control" means (i) the power, direct or indirect, to cause the |
||||
direction or management of such entity, whether by contract or |
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the |
||||
outstanding shares, or (iii) beneficial ownership of such entity. |
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity |
||||
exercising permissions granted by this License. |
||||
|
||||
"Source" form shall mean the preferred form for making modifications, |
||||
including but not limited to software source code, documentation |
||||
source, and configuration files. |
||||
|
||||
"Object" form shall mean any form resulting from mechanical |
||||
transformation or translation of a Source form, including but |
||||
not limited to compiled object code, generated documentation, |
||||
and conversions to other media types. |
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or |
||||
Object form, made available under the License, as indicated by a |
||||
copyright notice that is included in or attached to the work |
||||
(an example is provided in the Appendix below). |
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object |
||||
form, that is based on (or derived from) the Work and for which the |
||||
editorial revisions, annotations, elaborations, or other modifications |
||||
represent, as a whole, an original work of authorship. For the purposes |
||||
of this License, Derivative Works shall not include works that remain |
||||
separable from, or merely link (or bind by name) to the interfaces of, |
||||
the Work and Derivative Works thereof. |
||||
|
||||
"Contribution" shall mean any work of authorship, including |
||||
the original version of the Work and any modifications or additions |
||||
to that Work or Derivative Works thereof, that is intentionally |
||||
submitted to Licensor for inclusion in the Work by the copyright owner |
||||
or by an individual or Legal Entity authorized to submit on behalf of |
||||
the copyright owner. For the purposes of this definition, "submitted" |
||||
means any form of electronic, verbal, or written communication sent |
||||
to the Licensor or its representatives, including but not limited to |
||||
communication on electronic mailing lists, source code control systems, |
||||
and issue tracking systems that are managed by, or on behalf of, the |
||||
Licensor for the purpose of discussing and improving the Work, but |
||||
excluding communication that is conspicuously marked or otherwise |
||||
designated in writing by the copyright owner as "Not a Contribution." |
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity |
||||
on behalf of whom a Contribution has been received by Licensor and |
||||
subsequently incorporated within the Work. |
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of |
||||
this License, each Contributor hereby grants to You a perpetual, |
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable |
||||
copyright license to reproduce, prepare Derivative Works of, |
||||
publicly display, publicly perform, sublicense, and distribute the |
||||
Work and such Derivative Works in Source or Object form. |
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of |
||||
this License, each Contributor hereby grants to You a perpetual, |
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable |
||||
(except as stated in this section) patent license to make, have made, |
||||
use, offer to sell, sell, import, and otherwise transfer the Work, |
||||
where such license applies only to those patent claims licensable |
||||
by such Contributor that are necessarily infringed by their |
||||
Contribution(s) alone or by combination of their Contribution(s) |
||||
with the Work to which such Contribution(s) was submitted. If You |
||||
institute patent litigation against any entity (including a |
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work |
||||
or a Contribution incorporated within the Work constitutes direct |
||||
or contributory patent infringement, then any patent licenses |
||||
granted to You under this License for that Work shall terminate |
||||
as of the date such litigation is filed. |
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the |
||||
Work or Derivative Works thereof in any medium, with or without |
||||
modifications, and in Source or Object form, provided that You |
||||
meet the following conditions: |
||||
|
||||
(a) You must give any other recipients of the Work or |
||||
Derivative Works a copy of this License; and |
||||
|
||||
(b) You must cause any modified files to carry prominent notices |
||||
stating that You changed the files; and |
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works |
||||
that You distribute, all copyright, patent, trademark, and |
||||
attribution notices from the Source form of the Work, |
||||
excluding those notices that do not pertain to any part of |
||||
the Derivative Works; and |
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its |
||||
distribution, then any Derivative Works that You distribute must |
||||
include a readable copy of the attribution notices contained |
||||
within such NOTICE file, excluding those notices that do not |
||||
pertain to any part of the Derivative Works, in at least one |
||||
of the following places: within a NOTICE text file distributed |
||||
as part of the Derivative Works; within the Source form or |
||||
documentation, if provided along with the Derivative Works; or, |
||||
within a display generated by the Derivative Works, if and |
||||
wherever such third-party notices normally appear. The contents |
||||
of the NOTICE file are for informational purposes only and |
||||
do not modify the License. You may add Your own attribution |
||||
notices within Derivative Works that You distribute, alongside |
||||
or as an addendum to the NOTICE text from the Work, provided |
||||
that such additional attribution notices cannot be construed |
||||
as modifying the License. |
||||
|
||||
You may add Your own copyright statement to Your modifications and |
||||
may provide additional or different license terms and conditions |
||||
for use, reproduction, or distribution of Your modifications, or |
||||
for any such Derivative Works as a whole, provided Your use, |
||||
reproduction, and distribution of the Work otherwise complies with |
||||
the conditions stated in this License. |
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise, |
||||
any Contribution intentionally submitted for inclusion in the Work |
||||
by You to the Licensor shall be under the terms and conditions of |
||||
this License, without any additional terms or conditions. |
||||
Notwithstanding the above, nothing herein shall supersede or modify |
||||
the terms of any separate license agreement you may have executed |
||||
with Licensor regarding such Contributions. |
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade |
||||
names, trademarks, service marks, or product names of the Licensor, |
||||
except as required for reasonable and customary use in describing the |
||||
origin of the Work and reproducing the content of the NOTICE file. |
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or |
||||
agreed to in writing, Licensor provides the Work (and each |
||||
Contributor provides its Contributions) on an "AS IS" BASIS, |
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
||||
implied, including, without limitation, any warranties or conditions |
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A |
||||
PARTICULAR PURPOSE. You are solely responsible for determining the |
||||
appropriateness of using or redistributing the Work and assume any |
||||
risks associated with Your exercise of permissions under this License. |
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory, |
||||
whether in tort (including negligence), contract, or otherwise, |
||||
unless required by applicable law (such as deliberate and grossly |
||||
negligent acts) or agreed to in writing, shall any Contributor be |
||||
liable to You for damages, including any direct, indirect, special, |
||||
incidental, or consequential damages of any character arising as a |
||||
result of this License or out of the use or inability to use the |
||||
Work (including but not limited to damages for loss of goodwill, |
||||
work stoppage, computer failure or malfunction, or any and all |
||||
other commercial damages or losses), even if such Contributor |
||||
has been advised of the possibility of such damages. |
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing |
||||
the Work or Derivative Works thereof, You may choose to offer, |
||||
and charge a fee for, acceptance of support, warranty, indemnity, |
||||
or other liability obligations and/or rights consistent with this |
||||
License. However, in accepting such obligations, You may act only |
||||
on Your own behalf and on Your sole responsibility, not on behalf |
||||
of any other Contributor, and only if You agree to indemnify, |
||||
defend, and hold each Contributor harmless for any liability |
||||
incurred by, or claims asserted against, such Contributor by reason |
||||
of your accepting any such warranty or additional liability. |
||||
|
||||
END OF TERMS AND CONDITIONS |
||||
|
||||
APPENDIX: How to apply the Apache License to your work. |
||||
|
||||
To apply the Apache License to your work, attach the following |
||||
boilerplate notice, with the fields enclosed by brackets "{}" |
||||
replaced with your own identifying information. (Don't include |
||||
the brackets!) The text should be enclosed in the appropriate |
||||
comment syntax for the file format. We also recommend that a |
||||
file or class name and description of purpose be included on the |
||||
same "printed page" as the copyright notice for easier |
||||
identification within third-party archives. |
||||
|
||||
Copyright {yyyy} {name of copyright owner} |
||||
|
||||
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. |
||||
|
@ -0,0 +1,133 @@ |
||||
// Copyright 2015 Red Hat, 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 uuid |
||||
|
||||
import ( |
||||
"crypto/rand" |
||||
"encoding/hex" |
||||
"errors" |
||||
"fmt" |
||||
"io" |
||||
"strings" |
||||
) |
||||
|
||||
// UUID is 128bits = 16bytes
|
||||
type UUID [16]byte |
||||
|
||||
func (uuid UUID) String() string { |
||||
return fmt.Sprintf("%x-%x-%x-%x-%x", uuid[0:4], uuid[4:6], uuid[6:8], uuid[8:10], uuid[10:]) |
||||
} |
||||
|
||||
func (uuid UUID) IsZero() bool { |
||||
var zeroUuid UUID |
||||
return Equal(zeroUuid, uuid) |
||||
} |
||||
|
||||
func (uuid UUID) MarshalJSON() ([]byte, error) { |
||||
return []byte(`"` + uuid.String() + `"`), nil |
||||
} |
||||
|
||||
func (uuid *UUID) UnmarshalJSON(b []byte) error { |
||||
if u, err := Parse(string(b)); err != nil { |
||||
return err |
||||
} else { |
||||
copy(uuid[:], u[:]) |
||||
return nil |
||||
} |
||||
} |
||||
|
||||
func New() (*UUID, error) { |
||||
uuid := new(UUID) |
||||
|
||||
n, err := io.ReadFull(rand.Reader, uuid[:]) |
||||
if err != nil { |
||||
return nil, err |
||||
} else if n != len(uuid) { |
||||
return nil, errors.New(fmt.Sprintf("insufficient random data (expected: %d, read: %d)", len(uuid), n)) |
||||
} else { |
||||
// variant bits; for more info
|
||||
// see https://www.ietf.org/rfc/rfc4122.txt section 4.1.1
|
||||
uuid[8] = uuid[8]&0x3f | 0x80 |
||||
// version 4 (pseudo-random); for more info
|
||||
// see https://www.ietf.org/rfc/rfc4122.txt section 4.1.3
|
||||
uuid[6] = uuid[6]&0x0f | 0x40 |
||||
} |
||||
|
||||
return uuid, nil |
||||
} |
||||
|
||||
func Equal(uuid1 UUID, uuid2 UUID) bool { |
||||
for i, v := range uuid1 { |
||||
if v != uuid2[i] { |
||||
return false |
||||
} |
||||
} |
||||
|
||||
return true |
||||
} |
||||
|
||||
func Parse(s string) (*UUID, error) { |
||||
// the string format should be either in
|
||||
// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx (or)
|
||||
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|
||||
|
||||
// If the uuid is marshaled by us we add " " around the uuid.
|
||||
// while parsing this, we have to remove the " " around the
|
||||
// uuid. So we check if uuid has " " around it, if yes we remove
|
||||
// it.
|
||||
|
||||
if strings.HasPrefix(s, "\"") && strings.HasSuffix(s, "\"") { |
||||
s = s[1 : len(s)-1] |
||||
} |
||||
|
||||
uuid := new(UUID) |
||||
if len(s) == 36 { |
||||
if ba, err := hex.DecodeString(s[0:8]); err == nil { |
||||
copy(uuid[:4], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
if ba, err := hex.DecodeString(s[9:13]); err == nil { |
||||
copy(uuid[4:], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
if ba, err := hex.DecodeString(s[14:18]); err == nil { |
||||
copy(uuid[6:], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
if ba, err := hex.DecodeString(s[19:23]); err == nil { |
||||
copy(uuid[8:], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
if ba, err := hex.DecodeString(s[24:]); err == nil { |
||||
copy(uuid[10:], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
} else if len(s) == 32 { |
||||
if ba, err := hex.DecodeString(s); err == nil { |
||||
copy(uuid[:], ba) |
||||
} else { |
||||
return nil, err |
||||
} |
||||
} else { |
||||
return nil, errors.New("unknown UUID string " + s) |
||||
} |
||||
|
||||
return uuid, nil |
||||
} |
Loading…
Reference in new issue