Refactored downloader

This commit is contained in:
Kasper Juul Hermansen 2021-12-22 01:22:33 +01:00
parent 4b9583b08f
commit 23ca1168df
Signed by: kjuulh
GPG Key ID: 0F95C140730F2F23
21 changed files with 544 additions and 177 deletions

View File

@ -1,8 +1,13 @@
package main
import router "downloader/internal/app/router"
import (
"downloader/internal/app/configuration"
"downloader/internal/app/router"
)
func main() {
configuration.SetupDevelopmentConfigProvider()
router.
NewRouter().
Run()

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@ -0,0 +1,6 @@
- key: download_output
value: /home/kjuulh/Downloads/downloader
- key: download_tmp_output
value: /tmp/downloader
- key: download_frequency_update_ms
value: 1000

2
api/features.cfg Normal file
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@ -0,0 +1,2 @@
- key: download_progress_update
value: true

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@ -3,10 +3,13 @@ module downloader
go 1.17
require (
github.com/ghodss/yaml v1.0.0 // indirect
github.com/go-chi/chi v1.5.4 // indirect
github.com/go-chi/render v1.0.1 // indirect
github.com/google/uuid v1.3.0 // indirect
github.com/ovh/configstore v0.5.2 // indirect
go.uber.org/atomic v1.7.0 // indirect
go.uber.org/multierr v1.6.0 // indirect
go.uber.org/zap v1.19.1 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
)

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@ -1,6 +1,8 @@
github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-chi/chi v1.5.4 h1:QHdzF2szwjqVV4wmByUnTcsbIg7UGaQ0tPF2t5GcAIs=
github.com/go-chi/chi v1.5.4/go.mod h1:uaf8YgoFazUOkPBG7fxPftUylNumIev9awIWOENIuEg=
github.com/go-chi/render v1.0.1 h1:4/5tis2cKaNdnv9zFLfXzcquC9HbeZgCnxGnKrltBS8=
@ -10,10 +12,13 @@ github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/ovh/configstore v0.5.2 h1:VgraYqXx35W3ESBuGBzKdaa23FOVjJ7u1aY/zjeYcZw=
github.com/ovh/configstore v0.5.2/go.mod h1:krvoiDcrESKjEOz6AnKD8EbCmqHHQyOzEJNhAIhB4+Y=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
@ -51,5 +56,7 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8T
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

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@ -0,0 +1,14 @@
package configuration
import "github.com/ovh/configstore"
func SetupDevelopmentConfigProvider() {
configstore.Env("DOWNLOADER_")
configstore.File("config.development.cfg")
configstore.File("features.cfg")
}
func SetupProductionConfigProvider() {
configstore.Env("DOWNLOADER_")
configstore.File("config.cfg")
}

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@ -0,0 +1,33 @@
package logger
import (
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"os"
)
func New() *zap.SugaredLogger {
consoleEncoder := zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
jsonEncoder := zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())
consoleDebugging := zapcore.Lock(os.Stdout)
lowPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl < zapcore.ErrorLevel
})
highPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= zapcore.ErrorLevel
})
consoleErrors := zapcore.Lock(os.Stderr)
core := zapcore.NewTee(
zapcore.NewCore(jsonEncoder, consoleErrors, highPriority),
zapcore.NewCore(jsonEncoder, consoleDebugging, highPriority),
zapcore.NewCore(consoleEncoder, consoleErrors, highPriority),
zapcore.NewCore(consoleEncoder, consoleDebugging, lowPriority),
)
logger := zap.New(core)
defer func(logger *zap.Logger) {
_ = logger.Sync()
}(logger)
sugaredLogger := logger.Sugar()
return sugaredLogger
}

View File

@ -2,16 +2,20 @@ package router
import (
"downloader/internal/app/api/download"
"downloader/internal/app/infrastructure/logger"
"downloader/internal/core/ports/download_request/in_memory"
"downloader/internal/core/ports/downloader/yt_downloader"
"downloader/internal/core/ports/downloadhandler"
"downloader/internal/core/ports/filehandler/mover/local"
"downloader/internal/core/ports/fileorchestrator"
"downloader/internal/core/ports/fileorchestrator/destinationhandler"
"downloader/internal/core/ports/fileorchestrator/sourcehandler"
"downloader/internal/core/services/download/default"
"downloader/internal/core/services/download/handlers"
"downloader/internal/core/services/downloader"
"downloader/pkg/common/uuid"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"net/http"
"os"
"time"
)
@ -54,40 +58,21 @@ func (router *router) setupRoutes() *router {
}
func setupDownloadRoute(router *router) {
sugaredLogger := setupLogger()
newLogger := logger.New()
sourceHandler := sourcehandler.New()
mover := local.New(newLogger)
destinationHandler := destinationhandler.New(mover)
fileOrchestrator := fileorchestrator.New(newLogger, sourceHandler, destinationHandler)
drRepository := in_memory.NewInMemoryRepository(sugaredLogger)
downloader := yt_downloader.New(sugaredLogger)
drBackgroundService := _default.NewLocalBackgroundService(drRepository, sugaredLogger, downloader)
drRepository := in_memory.NewInMemoryRepository(newLogger)
//dlHandler := downloadhandler.NewYoutubeDlDownloader(newLogger)
dlHandler := downloadhandler.NewYtDlpDownloader(newLogger)
ondlHandler := handlers.New(drRepository, newLogger)
dwnloader := downloader.New(newLogger, fileOrchestrator, dlHandler, ondlHandler)
drBackgroundService := _default.NewLocalBackgroundService(drRepository, newLogger, dwnloader)
gen := uuid.New()
drService := _default.NewLocalService(drRepository, gen, drBackgroundService, newLogger)
drService := _default.NewLocalService(drRepository, gen, drBackgroundService, sugaredLogger)
downloadApi := download.New(drService)
downloadApi.SetupDownloadApi(router.internalRouter)
}
func setupLogger() *zap.SugaredLogger {
consoleEncoder := zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
jsonEncoder := zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())
consoleDebugging := zapcore.Lock(os.Stdout)
lowPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl < zapcore.ErrorLevel
})
highPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= zapcore.ErrorLevel
})
consoleErrors := zapcore.Lock(os.Stderr)
core := zapcore.NewTee(
zapcore.NewCore(jsonEncoder, consoleErrors, highPriority),
zapcore.NewCore(jsonEncoder, consoleDebugging, highPriority),
zapcore.NewCore(consoleEncoder, consoleErrors, highPriority),
zapcore.NewCore(consoleEncoder, consoleDebugging, lowPriority),
)
logger := zap.New(core)
defer func(logger *zap.Logger) {
_ = logger.Sync()
}(logger)
sugaredLogger := logger.Sugar()
return sugaredLogger
}

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@ -1,5 +0,0 @@
package downloader
type Downloader interface {
Download(link string, updateEvent func(progress string)) error
}

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@ -1,130 +0,0 @@
package yt_downloader
import (
"crypto/sha256"
"downloader/internal/core/ports/downloader"
"downloader/pkg/files"
"fmt"
"go.uber.org/zap"
"io"
"io/fs"
"log"
"os"
"os/exec"
"regexp"
"strings"
"time"
)
type YtDownloader struct {
outputDirectory string
tempDirectory string
checkFrequencyMs time.Duration
logger *zap.SugaredLogger
}
func New(logger *zap.SugaredLogger) downloader.Downloader {
return &YtDownloader{
outputDirectory: "/home/hermansen/Downloads/yt",
tempDirectory: "/tmp/downloader",
checkFrequencyMs: 5000,
logger: logger,
}
}
func init() {
_, err := exec.Command("youtube-dl", "--version").Output()
if err != nil {
log.Fatal("Youtube download (youtube-dl) isn't installed on the device")
}
}
func (y *YtDownloader) Download(link string, updateEvent func(progress string)) error {
baseDir := fmt.Sprintf("%s/%x",
y.tempDirectory,
sha256.Sum256([]byte(link)))
err := os.MkdirAll(baseDir, os.ModePerm)
err = os.MkdirAll(y.outputDirectory, os.ModePerm)
if err != nil {
y.logger.Error(err)
return err
}
filePath := fmt.Sprintf("%s/%s", baseDir, "%(title)s-%(id)s.%(ext)s")
command := exec.Command("youtube-dl",
"-R 3",
"-o",
filePath,
link,
)
var stdout io.ReadCloser
stdout, err = command.StdoutPipe()
go func() {
for true {
bytes := make([]byte, 1024)
_, err = stdout.Read(bytes)
if err != nil {
return
}
output := string(bytes)
compile := regexp.MustCompile(`[a-z\[\]\s]+([\d\.]+).[a-z\s]+([\d\.]+)([a-zA-Z]+)[a-z\s]+`)
if err != nil {
y.logger.Error(err)
return
}
res := compile.FindAllStringSubmatch(output, -1)
if len(res) != 0 && strings.Contains(res[0][0], "download") && len(res[0]) >= 2 {
progress := res[0][1]
y.logger.Debugw("progress",
"percentage", progress,
"link", link)
updateEvent(progress)
}
time.Sleep(time.Millisecond * y.checkFrequencyMs)
}
}()
err = command.Start()
if err != nil {
y.logger.Warn(err)
return err
}
err = command.Wait()
if err != nil {
return err
}
var dir []fs.DirEntry
dir, err = os.ReadDir(baseDir)
if err != nil {
y.logger.Error("Could not read directory")
return err
}
for _, fileInfo := range dir {
oldPath := fmt.Sprintf("%s/%s", baseDir, fileInfo.Name())
newPath := fmt.Sprintf("%s/%s", y.outputDirectory, fileInfo.Name())
if err := files.MoveFile(oldPath, newPath); err != nil {
return err
} else {
y.logger.Infow("moved file",
"fileName", fileInfo.Name())
if err := os.Remove(baseDir); err != nil {
y.logger.Warn("could not cleanup",
"path", oldPath)
}
}
}
return nil
}

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@ -0,0 +1,10 @@
package downloadhandler
type OnDownloadEventHandler interface {
OnTickEvent(downloadId string, progress string)
}
type DownloadHandler interface {
OnProgress(eventHandler OnDownloadEventHandler)
Download(link string, outputDir string, downloadId string) error
}

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@ -0,0 +1,98 @@
package downloadhandler
import (
"fmt"
"github.com/ovh/configstore"
"go.uber.org/zap"
"log"
"os/exec"
"regexp"
"strings"
"time"
)
type YoutubeDlDownloader struct {
progressUpdate bool
checkFrequencyMs time.Duration
logger *zap.SugaredLogger
onDownloadEventHandler OnDownloadEventHandler
}
func NewYoutubeDlDownloader(logger *zap.SugaredLogger) DownloadHandler {
var checkFrequencyMs int64
var featureProgressUpdate bool
var err error
checkFrequencyMs, err = configstore.GetItemValueInt("download_frequency_update_ms")
featureProgressUpdate, err = configstore.GetItemValueBool("download_progress_update")
if err != nil {
panic(err)
}
_, err = exec.Command("youtube-dl", "--version").Output()
if err != nil {
log.Fatal("Youtube download (youtube-dl) isn't installed on the device")
}
return &YoutubeDlDownloader{
checkFrequencyMs: time.Duration(checkFrequencyMs),
progressUpdate: featureProgressUpdate,
logger: logger,
onDownloadEventHandler: nil,
}
}
func (y *YoutubeDlDownloader) OnProgress(eventHandler OnDownloadEventHandler) {
y.onDownloadEventHandler = eventHandler
}
func (y *YoutubeDlDownloader) Download(link string, outputDir string, downloadId string) error {
filePath := fmt.Sprintf("%s/%s", outputDir, "%(title)s-%(id)s.%(ext)s")
command := exec.Command("youtube-dl",
"-R 3",
"-o",
filePath,
link,
)
stdout, err := command.StdoutPipe()
if y.progressUpdate {
go func() {
for true {
bytes := make([]byte, 1024)
_, err = stdout.Read(bytes)
if err != nil {
return
}
output := string(bytes)
if err = y.getParameters(output, link, downloadId); err != nil {
return
}
time.Sleep(time.Millisecond * y.checkFrequencyMs)
}
}()
}
return command.Run()
}
func (y *YoutubeDlDownloader) getParameters(output string, link string, downloadId string) error {
compile := regexp.MustCompile(`[a-z\[\]\s]+([\d\.]+).[a-z\s]+([\d\.]+)([a-zA-Z]+)[a-z\s]+`)
res := compile.FindAllStringSubmatch(output, -1)
if len(res) != 0 && strings.Contains(res[0][0], "download") && len(res[0]) >= 2 {
progress := res[0][1]
y.logger.Debugw("progress",
"percentage", progress,
"link", link)
if y.onDownloadEventHandler != nil {
y.onDownloadEventHandler.OnTickEvent(downloadId, progress)
}
}
return nil
}

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@ -0,0 +1,98 @@
package downloadhandler
import (
"fmt"
"github.com/ovh/configstore"
"go.uber.org/zap"
"log"
"os/exec"
"regexp"
"strings"
"time"
)
type YtDlpDownloader struct {
progressUpdate bool
checkFrequencyMs time.Duration
logger *zap.SugaredLogger
onDownloadEventHandler OnDownloadEventHandler
}
func NewYtDlpDownloader(logger *zap.SugaredLogger) DownloadHandler {
var checkFrequencyMs int64
var featureProgressUpdate bool
var err error
checkFrequencyMs, err = configstore.GetItemValueInt("download_frequency_update_ms")
featureProgressUpdate, err = configstore.GetItemValueBool("download_progress_update")
if err != nil {
panic(err)
}
_, err = exec.Command("yt-dlp", "--version").Output()
if err != nil {
log.Fatal("Youtube download (youtube-dl) isn't installed on the device")
}
return &YtDlpDownloader{
checkFrequencyMs: time.Duration(checkFrequencyMs),
progressUpdate: featureProgressUpdate,
logger: logger,
onDownloadEventHandler: nil,
}
}
func (y *YtDlpDownloader) OnProgress(eventHandler OnDownloadEventHandler) {
y.onDownloadEventHandler = eventHandler
}
func (y *YtDlpDownloader) Download(link string, outputDir string, downloadId string) error {
filePath := fmt.Sprintf("%s/%s", outputDir, "%(title)s-%(id)s.%(ext)s")
command := exec.Command("yt-dlp",
"-R 3",
"-o",
filePath,
link,
)
stdout, err := command.StdoutPipe()
if y.progressUpdate {
go func() {
for true {
bytes := make([]byte, 1024)
_, err = stdout.Read(bytes)
if err != nil {
return
}
output := string(bytes)
if err = y.getParameters(output, link, downloadId); err != nil {
return
}
time.Sleep(time.Millisecond * y.checkFrequencyMs)
}
}()
}
return command.Run()
}
func (y *YtDlpDownloader) getParameters(output string, link string, downloadId string) error {
compile := regexp.MustCompile(`[a-z\[\]\s]+([\d\.]+).[a-z\s\~]+([\d\.]+)([a-zA-Z]+)[a-z\s]+`)
res := compile.FindAllStringSubmatch(output, -1)
if len(res) != 0 && strings.Contains(res[0][0], "download") && len(res[0]) >= 2 {
progress := res[0][1]
y.logger.Debugw("progress",
"percentage", progress,
"link", link)
if y.onDownloadEventHandler != nil {
y.onDownloadEventHandler.OnTickEvent(downloadId, progress)
}
}
return nil
}

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@ -0,0 +1,39 @@
package local
import (
"downloader/internal/core/ports/filehandler/mover"
"downloader/pkg/files"
"fmt"
"go.uber.org/zap"
"os"
)
type Mover struct {
logger *zap.SugaredLogger
}
func New(logger *zap.SugaredLogger) mover.Mover {
return &Mover{logger: logger}
}
func (m *Mover) Move(sourceDirectory string, destinationDirectory string) error {
dir, err := os.ReadDir(sourceDirectory)
if err != nil {
m.logger.Error("Could not read directory")
return err
}
for _, fileInfo := range dir {
oldPath := fmt.Sprintf("%s/%s", sourceDirectory, fileInfo.Name())
newPath := fmt.Sprintf("%s/%s", destinationDirectory, fileInfo.Name())
if err := files.MoveFile(oldPath, newPath); err != nil {
return err
} else {
m.logger.Infow("moved file",
"fileName", fileInfo.Name())
}
}
return nil
}

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@ -0,0 +1,5 @@
package mover
type Mover interface {
Move(sourceDirectory string, destinationDirectory string) error
}

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@ -0,0 +1,36 @@
package destinationhandler
import (
"downloader/internal/core/ports/filehandler/mover"
"github.com/ovh/configstore"
"os"
)
type DestinationHandler interface {
Prepare() error
Move(sourcePath string) error
}
type localDestinationHandler struct {
outputDirectory string
mover mover.Mover
}
func New(mover mover.Mover) DestinationHandler {
outputDirectory, err := configstore.GetItemValue("download_output")
if err != nil {
panic(err)
}
return &localDestinationHandler{
outputDirectory: outputDirectory,
mover: mover,
}
}
func (l localDestinationHandler) Prepare() error {
return os.MkdirAll(l.outputDirectory, os.ModePerm)
}
func (l localDestinationHandler) Move(sourcePath string) error {
return l.mover.Move(sourcePath, l.outputDirectory)
}

View File

@ -0,0 +1,40 @@
package fileorchestrator
import (
"downloader/internal/core/ports/fileorchestrator/destinationhandler"
"downloader/internal/core/ports/fileorchestrator/sourcehandler"
"go.uber.org/zap"
)
type FileOrchestrator struct {
logger *zap.SugaredLogger
sourceHandler sourcehandler.SourceHandler
destinationHandler destinationhandler.DestinationHandler
}
func New(logger *zap.SugaredLogger, sourceHandler sourcehandler.SourceHandler, destinationHandler destinationhandler.DestinationHandler) *FileOrchestrator {
return &FileOrchestrator{
logger: logger,
sourceHandler: sourceHandler,
destinationHandler: destinationHandler,
}
}
func (o *FileOrchestrator) Begin(link string) (string, error) {
basePath, err := o.sourceHandler.Prepare(link)
err = o.destinationHandler.Prepare()
return basePath, err
}
func (o *FileOrchestrator) CleanUp(sourceDirectory string) {
err := o.sourceHandler.CleanUp(sourceDirectory)
if err != nil {
o.logger.Errorw("could not cleanup",
"path", sourceDirectory)
}
}
func (o *FileOrchestrator) Move(sourcePath string) error {
return o.destinationHandler.Move(sourcePath)
}

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@ -0,0 +1,39 @@
package sourcehandler
import (
"crypto/sha256"
"fmt"
"github.com/ovh/configstore"
"os"
)
type SourceHandler interface {
Prepare(link string) (string, error)
CleanUp(sourcePath string) error
}
type localSourceHandler struct {
outputTmpDirectory string
}
func New() SourceHandler {
outputTmpDirectory, err := configstore.GetItemValue("download_tmp_output")
if err != nil {
panic(err)
}
return &localSourceHandler{
outputTmpDirectory: outputTmpDirectory,
}
}
func (l localSourceHandler) Prepare(link string) (string, error) {
path := fmt.Sprintf("%s/%x",
l.outputTmpDirectory,
sha256.Sum256([]byte(link)))
err := os.MkdirAll(path, os.ModePerm)
return path, err
}
func (l localSourceHandler) CleanUp(sourcePath string) error {
return os.Remove(sourcePath)
}

View File

@ -3,9 +3,8 @@ package _default
import (
"downloader/internal/core/entities"
"downloader/internal/core/ports/download_request"
"downloader/internal/core/ports/downloader"
"downloader/internal/core/services/download"
"fmt"
"downloader/internal/core/services/downloader"
"go.uber.org/zap"
)
@ -26,10 +25,7 @@ func (l localBackgroundService) Run(download *entities.Download) error {
download.Status = "started"
_ = l.repository.Update(download)
err := l.downloader.Download(download.Link, func(progress string) {
download.Status = fmt.Sprintf("in-progress: %s", progress)
_ = l.repository.Update(download)
})
err := l.downloader.Download(download.Link, download.ID)
download.Status = "done"
if err != nil {

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@ -0,0 +1,32 @@
package handlers
import (
"downloader/internal/core/ports/download_request"
"downloader/internal/core/ports/downloadhandler"
"fmt"
"go.uber.org/zap"
)
type onDownloadEventHandler struct {
repository download_request.Repository
logger *zap.SugaredLogger
}
func New(repository download_request.Repository, logger *zap.SugaredLogger) downloadhandler.OnDownloadEventHandler {
return &onDownloadEventHandler{
repository: repository,
logger: logger,
}
}
func (o *onDownloadEventHandler) OnTickEvent(downloadId string, progress string) {
download, err := o.repository.GetById(downloadId)
if err != nil {
o.logger.Warnw("could not finish updating progress as not download id available",
"downloadId", downloadId,
"progress", progress)
return
}
download.Status = fmt.Sprintf("in-progress: %s", progress)
_ = o.repository.Update(download)
}

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@ -0,0 +1,54 @@
package downloader
import (
"downloader/internal/core/ports/downloadhandler"
"downloader/internal/core/ports/fileorchestrator"
"errors"
"go.uber.org/zap"
)
type Downloader interface {
Download(link string, downloadId string) error
}
type downloader struct {
logger *zap.SugaredLogger
downloadHandler downloadhandler.DownloadHandler
fileOrchestrator *fileorchestrator.FileOrchestrator
ondownloadhandler downloadhandler.OnDownloadEventHandler
}
func New(
logger *zap.SugaredLogger,
orchestrator *fileorchestrator.FileOrchestrator,
downloadHandler downloadhandler.DownloadHandler,
downloadEventHandler downloadhandler.OnDownloadEventHandler,
) Downloader {
return &downloader{
logger: logger,
downloadHandler: downloadHandler,
fileOrchestrator: orchestrator,
ondownloadhandler: downloadEventHandler,
}
}
func (y *downloader) Download(link string, downloadId string) error {
basePath, err := y.fileOrchestrator.Begin(link)
if err != nil {
return errors.New("could not prepare for this link")
}
defer y.fileOrchestrator.CleanUp(basePath)
y.downloadHandler.OnProgress(y.ondownloadhandler)
err = y.downloadHandler.Download(link, basePath, downloadId)
if err != nil {
return errors.New("could not download file")
}
err = y.fileOrchestrator.Move(basePath)
if err != nil {
return errors.New("could not move to final destination")
}
return nil
}