mirror of
https://github.com/vbatts/dedupe-linker.git
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base: golint
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
parent
7e2999aa4e
commit
267c961503
2 changed files with 16 additions and 14 deletions
18
base/base.go
18
base/base.go
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@ -14,6 +14,7 @@ import (
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"github.com/vbatts/dedupe-linker/file"
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)
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// NewBase populates the directories needed in a dedupe-base directory
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func NewBase(path string, hashName string) (*Base, error) {
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for _, p := range []string{"blobs/" + hashName, "state", "tmp"} {
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if err := os.MkdirAll(filepath.Join(path, p), 0755); err != nil && !os.IsExist(err) {
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@ -23,12 +24,14 @@ func NewBase(path string, hashName string) (*Base, error) {
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return &Base{Path: path, HashName: hashName, Hash: cryptomap.DetermineHash(hashName)}, nil
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}
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// Base is the destination for all hardlinks. Where stored objects are in a content addressible tree.
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type Base struct {
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Path string
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HashName string
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Hash crypto.Hash
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}
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// Stat provides the os.FileInfo for the object of `sum` address
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func (b Base) Stat(sum string) (os.FileInfo, error) {
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return os.Stat(b.blobPath(sum))
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}
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@ -40,12 +43,15 @@ func (b Base) blobPath(sum string) string {
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return filepath.Join(b.Path, "blobs", b.HashName, sum[0:2], sum)
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}
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type ReaderSeekerCloser interface {
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// ReadSeekCloser is like an io.ReadCloser, but can Seek too
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type ReadSeekCloser interface {
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io.Reader
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io.Seeker
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io.Closer
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}
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// SameFile checks whether the object of `sum` address, and `path` file path are the same file.
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// This checks by inode and device.
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func (b Base) SameFile(sum, path string) bool {
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var (
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bInode, dInode uint64
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@ -65,7 +71,7 @@ func (b Base) SameFile(sum, path string) bool {
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}
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// GetBlob store the content from src, for the sum and hashType
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func (b Base) GetBlob(sum string) (ReaderSeekerCloser, error) {
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func (b Base) GetBlob(sum string) (ReadSeekCloser, error) {
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return os.Open(b.blobPath(sum))
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}
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@ -117,7 +123,8 @@ func (b Base) tmpFile() (*os.File, error) {
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return ioutil.TempFile(filepath.Join(b.Path, "tmp"), "put")
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}
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// Hard link the file from src to the blob for sum
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// LinkFrom make a hard link the file from src to the blob of address `sum`.
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// TODO this function is going away, because it makes no assessment of the checksum of `src`
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func (b Base) LinkFrom(src, sum string) error {
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if err := os.MkdirAll(filepath.Dir(b.blobPath(sum)), 0756); err != nil && !os.IsExist(err) {
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return err
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@ -134,7 +141,8 @@ func randomString() (string, error) {
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return fmt.Sprintf("%x", buf), nil
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}
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// SafeLink overrides newname if it already exists. If there is an error in creating the link, the transaction is rolled back
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// SafeLink overrides newname if it already exists. If there is an error in
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// creating the link, the transaction is rolled back
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func SafeLink(oldname, newname string) error {
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var backupName string
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// check if newname exists
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@ -168,7 +176,7 @@ func SafeLink(oldname, newname string) error {
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return nil
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}
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// Hard link the file for sum to the path at dest
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// LinkTo makes a hard link the file of address `sum` to the path at `dest`
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func (b Base) LinkTo(dest, sum string) error {
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if err := os.MkdirAll(filepath.Dir(dest), 0755); err != nil && !os.IsExist(err) {
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return err
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@ -5,6 +5,8 @@ import (
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"os"
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"path/filepath"
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"syscall"
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"github.com/vbatts/dedupe-linker/file"
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)
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// FindBase steps up the directory tree to find the top-level that is still on
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@ -55,13 +57,5 @@ func hasPermission(path string) bool {
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func sameDevice(file1, file2 os.FileInfo) bool {
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sys1 := file1.Sys().(*syscall.Stat_t)
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sys2 := file2.Sys().(*syscall.Stat_t)
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return ((major(sys1.Dev) == major(sys2.Dev)) && (minor(sys1.Dev) == minor(sys2.Dev)))
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}
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func major(n uint64) uint64 {
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return uint64(n / 256)
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}
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func minor(n uint64) uint64 {
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return uint64(n % 256)
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return ((file.MajorDev(sys1.Dev) == file.MajorDev(sys2.Dev)) && (file.MinorDev(sys1.Dev) == file.MinorDev(sys2.Dev)))
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}
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