// MakeBucket - PUT Bucket
func (fs Filesystem) MakeBucket(bucket, acl string) *probe.Error {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return probe.NewError(RootPathFull{Path: fs.path})
}
// verify bucket path legal
if !IsValidBucketName(bucket) {
return probe.NewError(BucketNameInvalid{Bucket: bucket})
}
if !IsValidBucketACL(acl) {
return probe.NewError(InvalidACL{ACL: acl})
}
// get bucket path
bucketDir := filepath.Join(fs.path, bucket)
// check if bucket exists
if _, err = os.Stat(bucketDir); err == nil {
return probe.NewError(BucketExists{
Bucket: bucket,
})
}
// make bucket
err = os.Mkdir(bucketDir, 0700)
if err != nil {
return probe.NewError(err)
}
bucketMetadata := &BucketMetadata{}
fi, err := os.Stat(bucketDir)
// check if bucket exists
if err != nil {
if os.IsNotExist(err) {
return probe.NewError(BucketNotFound{Bucket: bucket})
}
return probe.NewError(err)
}
if strings.TrimSpace(acl) == "" {
acl = "private"
}
bucketMetadata.Name = fi.Name()
bucketMetadata.Created = fi.ModTime()
bucketMetadata.ACL = BucketACL(acl)
fs.buckets.Metadata[bucket] = bucketMetadata
if err := saveBucketsMetadata(fs.buckets); err != nil {
return err.Trace(bucket)
}
return nil
}
func (s *MySuite) TestFree(c *C) {
path, err := ioutil.TempDir(os.TempDir(), "minio-")
c.Assert(err, IsNil)
statfs, err := disk.Stat(path)
c.Assert(err, IsNil)
c.Assert(statfs.Total, Not(Equals), 0)
c.Assert(statfs.Free, Not(Equals), 0)
c.Assert(statfs.FSType, Not(Equals), "UNKNOWN")
}
// MakeBucket - PUT Bucket
func (fs Filesystem) MakeBucket(bucket, acl string) *probe.Error {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return probe.NewError(RootPathFull{Path: fs.path})
}
// verify bucket path legal
if !IsValidBucket(bucket) {
return probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// get bucket path
bucketDir := filepath.Join(fs.path, bucket)
// check if bucket exists
if _, err = os.Stat(bucketDir); err == nil {
return probe.NewError(BucketExists{
Bucket: bucket,
})
}
// make bucket
err = os.Mkdir(bucketDir, aclToPerm(acl))
if err != nil {
return probe.NewError(err)
}
return nil
}
// CreateObject - PUT object
func (fs Filesystem) CreateObject(bucket, object, expectedMD5Sum string, size int64, data io.Reader, signature *Signature) (ObjectMetadata, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return ObjectMetadata{}, probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return ObjectMetadata{}, probe.NewError(RootPathFull{Path: fs.path})
}
// check bucket name valid
if !IsValidBucket(bucket) {
return ObjectMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// check bucket exists
if _, err = os.Stat(filepath.Join(fs.path, bucket)); os.IsNotExist(err) {
return ObjectMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return ObjectMetadata{}, probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
// get object path
objectPath := filepath.Join(fs.path, bucket, object)
if strings.TrimSpace(expectedMD5Sum) != "" {
var expectedMD5SumBytes []byte
expectedMD5SumBytes, err = base64.StdEncoding.DecodeString(strings.TrimSpace(expectedMD5Sum))
if err != nil {
// pro-actively close the connection
return ObjectMetadata{}, probe.NewError(InvalidDigest{Md5: expectedMD5Sum})
}
expectedMD5Sum = hex.EncodeToString(expectedMD5SumBytes)
}
// write object
file, err := atomic.FileCreate(objectPath)
if err != nil {
return ObjectMetadata{}, probe.NewError(err)
}
h := md5.New()
sh := sha256.New()
mw := io.MultiWriter(file, h, sh)
if size > 0 {
_, err = io.CopyN(mw, data, size)
if err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
} else {
_, err = io.Copy(mw, data)
if err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
}
md5Sum := hex.EncodeToString(h.Sum(nil))
// Verify if the written object is equal to what is expected, only if it is requested as such
if strings.TrimSpace(expectedMD5Sum) != "" {
if err := isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), md5Sum); err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(BadDigest{Md5: expectedMD5Sum, Bucket: bucket, Object: object})
}
}
sha256Sum := hex.EncodeToString(sh.Sum(nil))
if signature != nil {
ok, perr := signature.DoesSignatureMatch(sha256Sum)
if perr != nil {
file.CloseAndPurge()
return ObjectMetadata{}, perr.Trace()
}
if !ok {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(SignatureDoesNotMatch{})
}
}
file.File.Sync()
file.Close()
st, err := os.Stat(objectPath)
if err != nil {
return ObjectMetadata{}, probe.NewError(err)
}
newObject := ObjectMetadata{
Bucket: bucket,
Object: object,
Created: st.ModTime(),
Size: st.Size(),
ContentType: "application/octet-stream",
Md5: md5Sum,
}
return newObject, nil
}
// CreateObjectPart - create a part in a multipart session
func (fs Filesystem) CreateObjectPart(bucket, object, uploadID, expectedMD5Sum string, partID int, size int64, data io.Reader, signature *Signature) (string, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return "", probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
if partID <= 0 {
return "", probe.NewError(errors.New("invalid part id, cannot be zero or less than zero"))
}
// check bucket name valid
if !IsValidBucketName(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !fs.isValidUploadID(object, uploadID) {
return "", probe.NewError(InvalidUploadID{UploadID: uploadID})
}
if strings.TrimSpace(expectedMD5Sum) != "" {
var expectedMD5SumBytes []byte
expectedMD5SumBytes, err = base64.StdEncoding.DecodeString(strings.TrimSpace(expectedMD5Sum))
if err != nil {
// pro-actively close the connection
return "", probe.NewError(InvalidDigest{Md5: expectedMD5Sum})
}
expectedMD5Sum = hex.EncodeToString(expectedMD5SumBytes)
}
bucketPath := filepath.Join(fs.path, bucket)
if _, err = os.Stat(bucketPath); err != nil {
// check bucket exists
if os.IsNotExist(err) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return "", probe.NewError(InternalError{})
}
}
objectPath := filepath.Join(bucketPath, object)
partPath := objectPath + fmt.Sprintf("$%d-$multiparts", partID)
partFile, err := atomic.FileCreateWithPrefix(partPath, "$multiparts")
if err != nil {
return "", probe.NewError(err)
}
h := md5.New()
sh := sha256.New()
mw := io.MultiWriter(partFile, h, sh)
_, err = io.CopyN(mw, data, size)
if err != nil {
partFile.CloseAndPurge()
return "", probe.NewError(err)
}
md5sum := hex.EncodeToString(h.Sum(nil))
// Verify if the written object is equal to what is expected, only if it is requested as such
if strings.TrimSpace(expectedMD5Sum) != "" {
if err := isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), md5sum); err != nil {
partFile.CloseAndPurge()
return "", probe.NewError(BadDigest{Md5: expectedMD5Sum, Bucket: bucket, Object: object})
}
}
if signature != nil {
ok, perr := signature.DoesSignatureMatch(hex.EncodeToString(sh.Sum(nil)))
if perr != nil {
partFile.CloseAndPurge()
return "", perr.Trace()
}
if !ok {
partFile.CloseAndPurge()
return "", probe.NewError(SignatureDoesNotMatch{})
}
}
partFile.Close()
fi, err := os.Stat(partPath)
if err != nil {
return "", probe.NewError(err)
}
partMetadata := PartMetadata{}
partMetadata.ETag = md5sum
partMetadata.PartNumber = partID
partMetadata.Size = fi.Size()
partMetadata.LastModified = fi.ModTime()
multiPartfile, err := os.OpenFile(objectPath+"$multiparts", os.O_RDWR|os.O_APPEND, 0600)
if err != nil {
return "", probe.NewError(err)
}
defer multiPartfile.Close()
var deserializedMultipartSession MultipartSession
decoder := json.NewDecoder(multiPartfile)
err = decoder.Decode(&deserializedMultipartSession)
if err != nil {
return "", probe.NewError(err)
}
deserializedMultipartSession.Parts = append(deserializedMultipartSession.Parts, &partMetadata)
deserializedMultipartSession.TotalParts++
fs.multiparts.ActiveSession[object] = &deserializedMultipartSession
sort.Sort(partNumber(deserializedMultipartSession.Parts))
encoder := json.NewEncoder(multiPartfile)
err = encoder.Encode(&deserializedMultipartSession)
if err != nil {
return "", probe.NewError(err)
}
return partMetadata.ETag, nil
}
// NewMultipartUpload - initiate a new multipart session
func (fs Filesystem) NewMultipartUpload(bucket, object string) (string, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return "", probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
if !IsValidBucketName(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Object: object})
}
bucketPath := filepath.Join(fs.path, bucket)
_, err = os.Stat(bucketPath)
// check bucket exists
if os.IsNotExist(err) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return "", probe.NewError(InternalError{})
}
objectPath := filepath.Join(bucketPath, object)
objectDir := filepath.Dir(objectPath)
if _, err = os.Stat(objectDir); os.IsNotExist(err) {
err = os.MkdirAll(objectDir, 0700)
if err != nil {
return "", probe.NewError(err)
}
}
id := []byte(strconv.FormatInt(rand.Int63(), 10) + bucket + object + time.Now().String())
uploadIDSum := sha512.Sum512(id)
uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
multiPartfile, err := os.OpenFile(objectPath+"$multiparts", os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
return "", probe.NewError(err)
}
defer multiPartfile.Close()
mpartSession := new(MultipartSession)
mpartSession.TotalParts = 0
mpartSession.UploadID = uploadID
mpartSession.Initiated = time.Now().UTC()
var parts []*PartMetadata
mpartSession.Parts = parts
fs.multiparts.ActiveSession[object] = mpartSession
encoder := json.NewEncoder(multiPartfile)
err = encoder.Encode(mpartSession)
if err != nil {
return "", probe.NewError(err)
}
if err := saveMultipartsSession(fs.multiparts); err != nil {
return "", err.Trace()
}
return uploadID, nil
}