File size: 5,739 Bytes
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package openai
import (
"errors"
"fmt"
"os"
"path/filepath"
"sync/atomic"
"time"
"github.com/mudler/LocalAI/core/config"
"github.com/mudler/LocalAI/core/schema"
"github.com/gofiber/fiber/v2"
"github.com/mudler/LocalAI/pkg/utils"
)
var UploadedFiles []schema.File
const UploadedFilesFile = "uploadedFiles.json"
// UploadFilesEndpoint https://platform.openai.com/docs/api-reference/files/create
func UploadFilesEndpoint(cm *config.BackendConfigLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
file, err := c.FormFile("file")
if err != nil {
return err
}
// Check the file size
if file.Size > int64(appConfig.UploadLimitMB*1024*1024) {
return c.Status(fiber.StatusBadRequest).SendString(fmt.Sprintf("File size %d exceeds upload limit %d", file.Size, appConfig.UploadLimitMB))
}
purpose := c.FormValue("purpose", "") //TODO put in purpose dirs
if purpose == "" {
return c.Status(fiber.StatusBadRequest).SendString("Purpose is not defined")
}
// Sanitize the filename to prevent directory traversal
filename := utils.SanitizeFileName(file.Filename)
savePath := filepath.Join(appConfig.UploadDir, filename)
// Check if file already exists
if _, err := os.Stat(savePath); !os.IsNotExist(err) {
return c.Status(fiber.StatusBadRequest).SendString("File already exists")
}
err = c.SaveFile(file, savePath)
if err != nil {
return c.Status(fiber.StatusInternalServerError).SendString("Failed to save file: " + err.Error())
}
f := schema.File{
ID: fmt.Sprintf("file-%d", getNextFileId()),
Object: "file",
Bytes: int(file.Size),
CreatedAt: time.Now(),
Filename: file.Filename,
Purpose: purpose,
}
UploadedFiles = append(UploadedFiles, f)
utils.SaveConfig(appConfig.UploadDir, UploadedFilesFile, UploadedFiles)
return c.Status(fiber.StatusOK).JSON(f)
}
}
var currentFileId int64 = 0
func getNextFileId() int64 {
atomic.AddInt64(¤tId, 1)
return currentId
}
// ListFilesEndpoint https://platform.openai.com/docs/api-reference/files/list
// @Summary List files.
// @Success 200 {object} schema.ListFiles "Response"
// @Router /v1/files [get]
func ListFilesEndpoint(cm *config.BackendConfigLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
var listFiles schema.ListFiles
purpose := c.Query("purpose")
if purpose == "" {
listFiles.Data = UploadedFiles
} else {
for _, f := range UploadedFiles {
if purpose == f.Purpose {
listFiles.Data = append(listFiles.Data, f)
}
}
}
listFiles.Object = "list"
return c.Status(fiber.StatusOK).JSON(listFiles)
}
}
func getFileFromRequest(c *fiber.Ctx) (*schema.File, error) {
id := c.Params("file_id")
if id == "" {
return nil, fmt.Errorf("file_id parameter is required")
}
for _, f := range UploadedFiles {
if id == f.ID {
return &f, nil
}
}
return nil, fmt.Errorf("unable to find file id %s", id)
}
// GetFilesEndpoint is the OpenAI API endpoint to get files https://platform.openai.com/docs/api-reference/files/retrieve
// @Summary Returns information about a specific file.
// @Success 200 {object} schema.File "Response"
// @Router /v1/files/{file_id} [get]
func GetFilesEndpoint(cm *config.BackendConfigLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
file, err := getFileFromRequest(c)
if err != nil {
return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
}
return c.JSON(file)
}
}
type DeleteStatus struct {
Id string
Object string
Deleted bool
}
// DeleteFilesEndpoint is the OpenAI API endpoint to delete files https://platform.openai.com/docs/api-reference/files/delete
// @Summary Delete a file.
// @Success 200 {object} DeleteStatus "Response"
// @Router /v1/files/{file_id} [delete]
func DeleteFilesEndpoint(cm *config.BackendConfigLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
file, err := getFileFromRequest(c)
if err != nil {
return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
}
err = os.Remove(filepath.Join(appConfig.UploadDir, file.Filename))
if err != nil {
// If the file doesn't exist then we should just continue to remove it
if !errors.Is(err, os.ErrNotExist) {
return c.Status(fiber.StatusInternalServerError).SendString(fmt.Sprintf("Unable to delete file: %s, %v", file.Filename, err))
}
}
// Remove upload from list
for i, f := range UploadedFiles {
if f.ID == file.ID {
UploadedFiles = append(UploadedFiles[:i], UploadedFiles[i+1:]...)
break
}
}
utils.SaveConfig(appConfig.UploadDir, UploadedFilesFile, UploadedFiles)
return c.JSON(DeleteStatus{
Id: file.ID,
Object: "file",
Deleted: true,
})
}
}
// GetFilesContentsEndpoint is the OpenAI API endpoint to get files content https://platform.openai.com/docs/api-reference/files/retrieve-contents
// @Summary Returns information about a specific file.
// @Success 200 {string} binary "file"
// @Router /v1/files/{file_id}/content [get]
// GetFilesContentsEndpoint
func GetFilesContentsEndpoint(cm *config.BackendConfigLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
file, err := getFileFromRequest(c)
if err != nil {
return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
}
fileContents, err := os.ReadFile(filepath.Join(appConfig.UploadDir, file.Filename))
if err != nil {
return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
}
return c.Send(fileContents)
}
}
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