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- // Copyright 2020 gorse Project Authors
- //
- // 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 model
- import (
- "archive/zip"
- "fmt"
- "github.com/zhenghaoz/gorse/base/log"
- "io"
- "net/http"
- "os"
- "os/user"
- "path/filepath"
- "strings"
- "go.uber.org/zap"
- )
- type DatasetFormat int
- const (
- FormatNCF DatasetFormat = iota
- FormatLibFM
- )
- // Built-in Data set
- type _BuiltInDataSet struct {
- downloadURL string
- trainFile string
- testFile string
- format DatasetFormat
- }
- var builtInDataSets = map[string]_BuiltInDataSet{
- "pinterest-20": {
- downloadURL: "https://cdn.gorse.io/datasets/pinterest-20.zip",
- trainFile: "pinterest-20/train.txt",
- testFile: "pinterest-20/test.txt",
- format: FormatNCF,
- },
- "ml-100k": {
- downloadURL: "https://cdn.gorse.io/datasets/ml-100k.zip",
- trainFile: "ml-100k/train.txt",
- testFile: "ml-100k/test.txt",
- format: FormatNCF,
- },
- "ml-1m": {
- downloadURL: "https://cdn.gorse.io/datasets/ml-1m.zip",
- trainFile: "ml-1m/train.txt",
- testFile: "ml-1m/test.txt",
- format: FormatNCF,
- },
- "ml-tag": {
- downloadURL: "https://cdn.gorse.io/datasets/ml-tag.zip",
- trainFile: "ml-tag/train.libfm",
- testFile: "ml-tag/test.libfm",
- format: FormatLibFM,
- },
- "frappe": {
- downloadURL: "https://cdn.gorse.io/datasets/frappe.zip",
- trainFile: "frappe/train.libfm",
- testFile: "frappe/test.libfm",
- format: FormatLibFM,
- },
- "criteo": {
- downloadURL: "https://cdn.gorse.io/datasets/criteo.zip",
- trainFile: "criteo/train.libfm",
- testFile: "criteo/test.libfm",
- format: FormatLibFM,
- },
- }
- // The Data directories
- var (
- GorseDir string
- DataSetDir string
- TempDir string
- )
- func init() {
- usr, err := user.Current()
- if err != nil {
- log.Logger().Fatal("failed to get user directory", zap.Error(err))
- }
- GorseDir = usr.HomeDir + "/.gorse"
- DataSetDir = GorseDir + "/dataset"
- TempDir = GorseDir + "/temp"
- // create all folders
- if err = os.MkdirAll(DataSetDir, os.ModePerm); err != nil {
- log.Logger().Fatal("failed to create directory", zap.Error(err), zap.String("path", DataSetDir))
- }
- if err = os.MkdirAll(TempDir, os.ModePerm); err != nil {
- log.Logger().Fatal("failed to create directory", zap.Error(err), zap.String("path", TempDir))
- }
- }
- func LocateBuiltInDataset(name string, format DatasetFormat) (string, string, error) {
- // Extract Data set information
- dataSet, exist := builtInDataSets[name]
- if !exist {
- return "", "", fmt.Errorf("no such dataset %v", name)
- }
- if dataSet.format != format {
- return "", "", fmt.Errorf("format not matchs %v != %v", format, dataSet.format)
- }
- // Download if not exists
- trainFilePah := filepath.Join(DataSetDir, dataSet.trainFile)
- testFilePath := filepath.Join(DataSetDir, dataSet.testFile)
- if _, err := os.Stat(trainFilePah); os.IsNotExist(err) {
- zipFileName, _ := downloadFromUrl(dataSet.downloadURL, TempDir)
- if _, err := unzip(zipFileName, DataSetDir); err != nil {
- return "", "", err
- }
- }
- return trainFilePah, testFilePath, nil
- }
- // downloadFromUrl downloads file from URL.
- func downloadFromUrl(src, dst string) (string, error) {
- log.Logger().Info("Download dataset", zap.String("source", src))
- // Extract file name
- tokens := strings.Split(src, "/")
- fileName := filepath.Join(dst, tokens[len(tokens)-1])
- // Create file
- if err := os.MkdirAll(filepath.Dir(fileName), os.ModePerm); err != nil {
- return fileName, err
- }
- output, err := os.Create(fileName)
- if err != nil {
- log.Logger().Error("failed to create file", zap.Error(err), zap.String("filename", fileName))
- return fileName, err
- }
- defer output.Close()
- // Download file
- response, err := http.Get(src)
- if err != nil {
- log.Logger().Error("failed to download", zap.Error(err), zap.String("source", src))
- return fileName, err
- }
- defer response.Body.Close()
- // Save file
- _, err = io.Copy(output, response.Body)
- if err != nil {
- log.Logger().Error("failed to download", zap.Error(err), zap.String("source", src))
- return fileName, err
- }
- return fileName, nil
- }
- // unzip zip file.
- func unzip(src, dst string) ([]string, error) {
- var fileNames []string
- // Open zip file
- r, err := zip.OpenReader(src)
- if err != nil {
- return fileNames, err
- }
- defer r.Close()
- // Extract files
- for _, f := range r.File {
- // Open file
- rc, err := f.Open()
- if err != nil {
- return fileNames, err
- }
- // Store filename/path for returning and using later on
- filePath := filepath.Join(dst, f.Name)
- // Check for ZipSlip. More Info: http://bit.ly/2MsjAWE
- if !strings.HasPrefix(filePath, filepath.Clean(dst)+string(os.PathSeparator)) {
- return fileNames, fmt.Errorf("%s: illegal file path", filePath)
- }
- // Add filename
- fileNames = append(fileNames, filePath)
- if f.FileInfo().IsDir() {
- // Create folder
- if err = os.MkdirAll(filePath, os.ModePerm); err != nil {
- return fileNames, err
- }
- } else {
- // Create all folders
- if err = os.MkdirAll(filepath.Dir(filePath), os.ModePerm); err != nil {
- return fileNames, err
- }
- // Create file
- outFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
- if err != nil {
- return fileNames, err
- }
- // Save file
- _, err = io.Copy(outFile, rc)
- if err != nil {
- return nil, err
- }
- // Close the file without defer to close before next iteration of loop
- err = outFile.Close()
- if err != nil {
- return nil, err
- }
- }
- // Close file
- err = rc.Close()
- if err != nil {
- return nil, err
- }
- }
- return fileNames, nil
- }
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