store only chunk, record file

internal/photos/api/db.go

@@ -16,6 +16,7 @@ func (s *Service) Migrate() {
 	tx.AutoMigrate(&models.Account{})
 	tx.AutoMigrate(&models.Session{})
 	tx.AutoMigrate(&models.File{})
+	tx.AutoMigrate(&models.FileChunk{})
 }
 
 func (s *Service) DBConfig() {

internal/photos/api/errors.go

@@ -5,8 +5,15 @@ import (
 )
 
 func (s *Service) Error(c *gin.Context, code int, err error) {
+	var status string
+	if code >= 200 && code < 400 {
+		status = "success"
+	} else {
+		status = "failed"
+	}
+
 	c.AbortWithStatusJSON(code, gin.H{
-		"status": "failed",
+		"status": status,
 		"error":  err.Error(),
 	})
 }

internal/photos/api/file.go

@@ -2,19 +2,22 @@ package api
 
 import (
 	"bytes"
-	"fmt"
+	"errors"
 	"io"
 	"net/http"
-	"path/filepath"
+	"strings"
 
 	"github.com/gin-gonic/gin"
+	"gitlab.celogeek.com/photos/api/internal/photos/models"
 	"gitlab.celogeek.com/photos/api/internal/photoserrors"
+	"gorm.io/gorm"
 )
 
 var CHUNK_SIZE int64 = 1 << 20
 
 type File struct {
-	Sum    string   `json:"sum"`
+	Name     string   `json:"name"`
+	Checksum string   `json:"checksum"`
 	Chunks   []string `json:"chunks"`
 }
 
@@ -25,7 +28,12 @@ func (s *Service) FileCreate(c *gin.Context) {
 		return
 	}
 
-	if len(file.Sum) != 40 {
+	if len(file.Name) < 1 {
+		s.Error(c, http.StatusBadRequest, photoserrors.ErrStoreMissingName)
+		return
+	}
+
+	if len(file.Checksum) != 40 {
 		s.Error(c, http.StatusBadRequest, photoserrors.ErrStoreBadChecksum)
 		return
 	}
@@ -41,48 +49,61 @@ func (s *Service) FileCreate(c *gin.Context) {
 		}
 	}
 
-	r, rs, err := s.Store.CombineTemp(file.Sum, file.Chunks)
+	r, rs, err := s.Store.Combine(file.Chunks)
 	if err != nil {
+		if strings.HasPrefix(err.Error(), "chunk") && strings.HasSuffix(err.Error(), "doesn't exists") {
+			s.Error(c, http.StatusBadRequest, err)
+		} else {
 			s.Error(c, http.StatusInternalServerError, err)
+		}
 		return
 	}
 
-	if r != file.Sum {
+	if r != file.Checksum {
-		fmt.Printf("R=%s, O=%s\n", r, file.Sum)
 		s.Error(c, http.StatusExpectationFailed, photoserrors.ErrStoreMismatchChecksum)
 		return
 	}
 
-	if err = s.Store.CommitTemp(file.Sum, file.Chunks); err != nil {
+	sess := s.CurrentSession(c)
+
+	f := &models.File{
+		Name:     file.Name,
+		Checksum: file.Checksum,
+		Size:     rs,
+		AuthorId: &sess.AccountId,
+	}
+
+	err = s.DB.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Create(f).Error; err != nil {
+			return err
+		}
+		for i, chunk := range file.Chunks {
+			fc := &models.FileChunk{
+				FileId:   f.ID,
+				Part:     uint32(i + 1),
+				Checksum: chunk,
+			}
+			if err := tx.Create(fc).Error; err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+
+	if err != nil {
 		s.Error(c, http.StatusInternalServerError, err)
 		return
 	}
 
 	c.JSON(http.StatusOK, gin.H{
 		"status":   "success",
-		"sum":      file.Sum,
+		"sum":      file.Checksum,
 		"nbChunks": len(file.Chunks),
 		"size":     rs,
 	})
 }
 
-func (s *Service) FileCreateTemp(c *gin.Context) {
+func (s *Service) FileCreateChunk(c *gin.Context) {
-	var (
-		origsum = c.Param("origsum")
-		sumb    = c.Param("sum")
-	)
-	if len(origsum) != 40 || len(sumb) != 40 {
-		s.Error(c, http.StatusBadRequest, photoserrors.ErrStoreBadChecksum)
-		return
-	}
-
-	originaldir := s.Store.Dir("original", origsum)
-	originalname := filepath.Join(originaldir, origsum)
-	if s.Store.FileExists(originalname) {
-		s.Error(c, http.StatusBadRequest, photoserrors.ErrStoreAlreadyExists)
-		return
-	}
-
 	if c.Request.ContentLength > CHUNK_SIZE {
 		s.Error(c, http.StatusBadRequest, photoserrors.ErrStoreBadChunkSize)
 		return
@@ -92,8 +113,12 @@ func (s *Service) FileCreateTemp(c *gin.Context) {
 	io.Copy(b, c.Request.Body)
 	c.Request.Body.Close()
 
-	if err := s.Store.SaveTemp(origsum, sumb, b.Bytes()); err != nil {
+	if err := s.Store.NewChunk(b.Bytes()).Save(); err != nil {
+		if errors.Is(err, photoserrors.ErrStoreChunkAlreadyExists) {
+			s.Error(c, http.StatusOK, err)
+		} else {
 			s.Error(c, http.StatusBadRequest, err)
+		}
 		return
 	}
 

internal/photos/api/main.go

@@ -60,7 +60,7 @@ func (s *Service) SetupRoutes() {
 	album := s.Gin.Group("/file")
 	album.Use(s.RequireSession)
 	album.POST("/", s.FileCreate)
-	album.POST("/tmp/:origsum/:sum", s.FileCreateTemp)
+	album.POST("/chunk", s.FileCreateChunk)
 
 	s.Gin.NoRoute(func(c *gin.Context) {
 		s.Error(c, http.StatusNotFound, photoserrors.ErrReqNotFound)
@@ -75,10 +75,8 @@ func (s *Service) PrepareStore() {
 	if !d.IsDir() {
 		s.LogErr.Fatal("Store", photoserrors.ErrStorePathNotADirectory)
 	}
-	if err := s.Store.MkDirs([]string{"tmp", "original"}); err != nil {
-		s.LogErr.Fatal("Store", err)
-	}
 }
+
 func (s *Service) Run() error {
 	rand.Seed(time.Now().UnixNano())
 	s.PrepareStore()

internal/photos/models/file.go

@@ -6,6 +6,7 @@ type File struct {
 	ID        uint32    `gorm:"primary_key" json:"id"`
 	Name      string    `gorm:"not null" json:"name"`
 	Checksum  string    `gorm:"unique;size:44;not null"`
+	Size      uint64    `gorm:"not null"`
 	Author    *Account  `gorm:"constraint:OnDelete:SET NULL,OnUpdate:CASCADE" json:"author"`
 	AuthorId  *uint32   `json:"-"`
 	CreatedAt time.Time `json:"created_at"`

internal/photos/models/filechunk.go

@@ -0,0 +1,12 @@
+package models
+
+import "time"
+
+type FileChunk struct {
+	FileId    uint32
+	File      *File `gorm:"constraint:OnDelete:CASCADE,OnUpdate:CASCADE"`
+	Part      uint32
+	Checksum  string    `gorm:"unique;size:44;not null"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}

internal/photoserrors/store.go

@@ -11,4 +11,6 @@ var (
 	ErrStoreWrongChecksum      = errors.New("wrong checksum")
 	ErrStoreMismatchChecksum   = errors.New("part files doesn't match the original checksum")
 	ErrStoreAlreadyExists      = errors.New("original file already exists")
+	ErrStoreChunkAlreadyExists = errors.New("chunk file already exists")
+	ErrStoreMissingName        = errors.New("name required")
 )

internal/store/core.go

@@ -15,115 +15,81 @@ type Store struct {
 	Path string
 }
 
-func (s *Store) Dir(path, sum string) string {
+type Chunk struct {
-	return filepath.Join(s.Path, path, sum[0:1], sum[1:2])
+	*Store
+	Sum   string
+	Bytes []byte
 }
 
-func (s *Store) MkDirs(dirs []string) error {
+func (s *Store) NewChunk(b []byte) *Chunk {
-	for _, dir := range dirs {
+	sum := sha1.New()
-		if err := os.MkdirAll(filepath.Join(s.Path, dir), 0755); err != nil {
+	sum.Write(b)
-			return err
+	sumString := hex.EncodeToString(sum.Sum(nil))
-		}
+
-	}
+	return &Chunk{s, sumString, b}
-	return nil
 }
 
-func (s *Store) FileExists(filename string) bool {
+func (s *Store) LoadChunk(sum string) (*Chunk, error) {
-	fs, err := os.Stat(filename)
+	c := &Chunk{s, sum, nil}
+	if !c.FileExists() {
+		return nil, fmt.Errorf("chunk %s doesn't exists", sum)
+	}
+	b, err := os.ReadFile(c.Filename())
+	if err != nil {
+		return nil, err
+	}
+	c.Bytes = b
+	return c, nil
+}
+
+func (c *Chunk) Dir() string {
+	return filepath.Join(c.Path, "storage", c.Sum[0:1], c.Sum[1:2])
+}
+
+func (c *Chunk) Filename() string {
+	return filepath.Join(c.Dir(), c.Sum)
+}
+
+func (c *Chunk) FileExists() bool {
+	fs, err := os.Stat(c.Filename())
 	if errors.Is(err, os.ErrNotExist) {
 		return false
 	}
 	return !fs.IsDir()
 }
 
-func (s *Store) SaveTemp(path string, sumb string, b []byte) error {
+func (c *Chunk) Mkdir() error {
-	sum := sha1.New()
+	return os.MkdirAll(c.Dir(), 0755)
-	sum.Write(b)
+}
-	sumString := hex.EncodeToString(sum.Sum(nil))
 
-	if sumb != sumString {
+func (c *Chunk) Save() error {
-		return photoserrors.ErrStoreWrongChecksum
+	if c.FileExists() {
+		return photoserrors.ErrStoreChunkAlreadyExists
 	}
 
-	tmpdir := filepath.Join("tmp", path)
+	if err := c.Mkdir(); err != nil {
-	dir := s.Dir(tmpdir, sumString)
-	filename := filepath.Join(dir, sumString)
-
-	if s.FileExists(filename) {
-		return nil
-	}
-
-	if err := os.MkdirAll(dir, 0755); err != nil {
 		return err
 	}
 
-	fs, err := os.Create(filename)
+	fs, err := os.Create(c.Filename())
 	if err != nil {
 		return err
 	}
 	defer fs.Close()
-	_, err = fs.Write(b)
+	_, err = fs.Write(c.Bytes)
 	return err
 }
 
-func (s *Store) CombineTemp(path string, sumb []string) (string, uint64, error) {
+func (s *Store) Combine(sumb []string) (string, uint64, error) {
-	tmpdir := filepath.Join("tmp", path)
 	sum := sha1.New()
 	size := uint64(0)
 	for _, sb := range sumb {
-		dir := s.Dir(tmpdir, sb)
+		c, err := s.LoadChunk(sb)
-		filename := filepath.Join(dir, sb)
-		if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
-			return "", 0, fmt.Errorf("%s: chunk %s doesn't exists", path, sb)
-		}
-		b, err := os.ReadFile(filename)
 		if err != nil {
 			return "", 0, err
 		}
-		sum.Write(b)
+		sum.Write(c.Bytes)
-		size += uint64(len(b))
+		size += uint64(len(c.Bytes))
 	}
 	return hex.EncodeToString(sum.Sum(nil)), size, nil
 }
-
-func (s *Store) CommitTemp(path string, sumb []string) error {
-	tmpdir := filepath.Join("tmp", path)
-	originaldir := s.Dir("original", path)
-	originalname := filepath.Join(originaldir, path)
-
-	if s.FileExists(originalname) {
-		return photoserrors.ErrStoreAlreadyExists
-	}
-
-	os.MkdirAll(originaldir, 0755)
-
-	fs, err := os.Create(originalname)
-	if err != nil {
-		return err
-	}
-	defer fs.Close()
-
-	for _, sb := range sumb {
-		dir := s.Dir(tmpdir, sb)
-		filename := filepath.Join(dir, sb)
-		if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
-			return fmt.Errorf("%s: chunk %s doesn't exists", path, sb)
-		}
-		b, err := os.ReadFile(filename)
-		if err != nil {
-			return err
-		}
-		if _, err := fs.Write(b); err != nil {
-			return err
-		}
-	}
-
-	for _, sb := range sumb {
-		dir := s.Dir(tmpdir, sb)
-		filename := filepath.Join(dir, sb)
-		if err := os.Remove(filename); err != nil {
-			return err
-		}
-	}
-	return os.RemoveAll(filepath.Join(s.Path, tmpdir))
-}