TTDL-3 Add `deadline` flag

README.md

@@ -20,6 +20,7 @@ Clone this repository and run `go build` to build the executable.
 * `-output some_directory` - Output path (default "./downloads")
 * `-metadata` - Write video metadata to a .json file
 * `-batch-file` - File containing URLs/Usernames to download, one value per line. Lines starting with '#', are considered as comments and ignored.
+* `-deadline` - Sets the timout for scraper logic in seconds (used as a workaround for context deadline exceeded error) (default 1500)
 
 ## Acknowledgments
 This software uses the **chromedp** for web scraping, it can be found here: https://github.com/chromedp/chromedp \

client/executeClientAction.go

@@ -0,0 +1,58 @@
+package client
+
+import (
+	"context"
+	"github.com/chromedp/chromedp"
+	"io/ioutil"
+	"log"
+	"os"
+	"time"
+
+	models "../models"
+	utils "../utils"
+)
+
+// GetMusicUploads - Get all uploads by given music
+func executeClientAction(url string, jsAction string) string {
+	dir, err := ioutil.TempDir("", "chromedp-example")
+	if err != nil {
+		panic(err)
+	}
+	defer os.RemoveAll(dir)
+
+	opts := append(chromedp.DefaultExecAllocatorOptions[:],
+		chromedp.DisableGPU,
+		chromedp.UserDataDir(dir),
+		chromedp.Flag("headless", !models.Config.Debug),
+	)
+
+	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
+	defer cancel()
+
+	ctx, cancel := chromedp.NewContext(
+		allocCtx,
+		chromedp.WithLogf(log.Printf),
+	)
+	defer cancel()
+
+	ctx, cancel = context.WithTimeout(ctx, time.Duration(models.Config.Deadline)*time.Second)
+	defer cancel()
+
+	var jsOutput string
+	err = chromedp.Run(ctx,
+		// Navigate to user's page
+		chromedp.Navigate(url),
+		// Execute url grabber script
+		chromedp.EvaluateAsDevTools(utils.ReadFileAsString("scraper.js"), &jsOutput),
+		chromedp.EvaluateAsDevTools(jsAction, &jsOutput),
+		// Wait until custom js finishes
+		chromedp.WaitVisible(`video_urls`),
+		// Grab url links from our element
+		chromedp.InnerHTML(`video_urls`, &jsOutput),
+	)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return jsOutput
+}

client/getMusicUploads.go

@@ -1,58 +1,11 @@
 package client
 
 import (
-	"context"
-	"github.com/chromedp/chromedp"
-	"io/ioutil"
-	"log"
-	"os"
-	"time"
-
 	models "../models"
-	utils "../utils"
 )
 
 // GetMusicUploads - Get all uploads by given music
 func GetMusicUploads(url string) []models.Upload {
-	dir, err := ioutil.TempDir("", "chromedp-example")
-	if err != nil {
-		panic(err)
-	}
-	defer os.RemoveAll(dir)
-
-	opts := append(chromedp.DefaultExecAllocatorOptions[:],
-		chromedp.DisableGPU,
-		chromedp.UserDataDir(dir),
-		chromedp.Flag("headless", !models.Config.Debug),
-	)
-
-	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
-	defer cancel()
-
-	ctx, cancel := chromedp.NewContext(
-		allocCtx,
-		chromedp.WithLogf(log.Printf),
-	)
-	defer cancel()
-
-	ctx, cancel = context.WithTimeout(ctx, 1500*time.Second)
-	defer cancel()
-
-	var jsOutput string
-	err = chromedp.Run(ctx,
-		// Navigate to user's page
-		chromedp.Navigate(url),
-		// Execute url grabber script
-		chromedp.EvaluateAsDevTools(utils.ReadFileAsString("scraper.js"), &jsOutput),
-		chromedp.EvaluateAsDevTools("bootstrapIteratingVideos()", &jsOutput),
-		// Wait until custom js finishes
-		chromedp.WaitVisible(`video_urls`),
-		// Grab url links from our element
-		chromedp.InnerHTML(`video_urls`, &jsOutput),
-	)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	return models.ParseUploads(jsOutput)
+	actionOutput := executeClientAction(url, "bootstrapIteratingVideos()")
+	return models.ParseUploads(actionOutput)
 }

client/getUserUploads.go

@@ -1,58 +1,11 @@
 package client
 
 import (
-	"context"
-	"github.com/chromedp/chromedp"
-	"io/ioutil"
-	"log"
-	"os"
-	"time"
-
 	models "../models"
-	utils "../utils"
 )
 
 // GetUserUploads - Get all uploads by user
 func GetUserUploads(username string) []models.Upload {
-	dir, err := ioutil.TempDir("", "chromedp-example")
-	if err != nil {
-		panic(err)
-	}
-	defer os.RemoveAll(dir)
-
-	opts := append(chromedp.DefaultExecAllocatorOptions[:],
-		chromedp.DisableGPU,
-		chromedp.UserDataDir(dir),
-		chromedp.Flag("headless", !models.Config.Debug),
-	)
-
-	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
-	defer cancel()
-
-	ctx, cancel := chromedp.NewContext(
-		allocCtx,
-		chromedp.WithLogf(log.Printf),
-	)
-	defer cancel()
-
-	ctx, cancel = context.WithTimeout(ctx, 1500*time.Second)
-	defer cancel()
-
-	var jsOutput string
-	err = chromedp.Run(ctx,
-		// Navigate to user's page
-		chromedp.Navigate(`https://www.tiktok.com/@`+username),
-		// Execute url grabber script
-		chromedp.EvaluateAsDevTools(utils.ReadFileAsString("scraper.js"), &jsOutput),
-		chromedp.EvaluateAsDevTools("bootstrapIteratingVideos()", &jsOutput),
-		// Wait until custom js finishes
-		chromedp.WaitVisible(`video_urls`),
-		// Grab url links from our element
-		chromedp.InnerHTML(`video_urls`, &jsOutput),
-	)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	return models.ParseUploads(jsOutput)
+	actionOutput := executeClientAction(`https://www.tiktok.com/@`+username, "bootstrapIteratingVideos()")
+	return models.ParseUploads(actionOutput)
 }

client/getVideoDetails.go

@@ -1,58 +1,11 @@
 package client
 
 import (
-	"context"
-	"github.com/chromedp/chromedp"
-	"io/ioutil"
-	"log"
-	"os"
-	"time"
-
 	models "../models"
-	utils "../utils"
 )
 
 // GetVideoDetails - returns details of video
 func GetVideoDetails(videoURL string) models.Upload {
-	dir, err := ioutil.TempDir("", "chromedp-example")
-	if err != nil {
-		panic(err)
-	}
-	defer os.RemoveAll(dir)
-
-	opts := append(chromedp.DefaultExecAllocatorOptions[:],
-		chromedp.DisableGPU,
-		chromedp.UserDataDir(dir),
-		chromedp.Flag("headless", !models.Config.Debug),
-	)
-
-	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
-	defer cancel()
-
-	ctx, cancel := chromedp.NewContext(
-		allocCtx,
-		chromedp.WithLogf(log.Printf),
-	)
-	defer cancel()
-
-	ctx, cancel = context.WithTimeout(ctx, 1500*time.Second)
-	defer cancel()
-
-	var jsOutput string
-	err = chromedp.Run(ctx,
-		// Navigate to user's page
-		chromedp.Navigate(videoURL),
-		// Execute url grabber script
-		chromedp.EvaluateAsDevTools(utils.ReadFileAsString("scraper.js"), &jsOutput),
-		chromedp.EvaluateAsDevTools("bootstrapGetCurrentVideo()", &jsOutput),
-		// Wait until custom js finishes
-		chromedp.WaitVisible(`video_urls`),
-		// Grab url links from our element
-		chromedp.InnerHTML(`video_urls`, &jsOutput),
-	)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	return models.ParseUpload(jsOutput)
+	actionOutput := executeClientAction(videoURL, "bootstrapGetCurrentVideo()")
+	return models.ParseUpload(actionOutput)
 }

models/config.go

@@ -15,6 +15,7 @@ var Config struct {
 	BatchFilePath string
 	Debug         bool
 	MetaData      bool
+	Deadline      int
 }
 
 // GetConfig - Returns Config object
@@ -23,6 +24,7 @@ func GetConfig() {
 	batchFilePath := flag.String("batch-file", "", "File containing URLs/Usernames to download, one value per line. Lines starting with '#', are considered as comments and ignored.")
 	debug := flag.Bool("debug", false, "Enables debug mode")
 	metadata := flag.Bool("metadata", false, "Write video metadata to a .json file")
+	deadline := flag.Int("deadline", 1500, "Sets the timout for scraper logic in seconds (used as a workaround for 'context deadline exceeded' error)")
 	flag.Parse()
 
 	args := flag.Args()
@@ -41,6 +43,7 @@ func GetConfig() {
 	Config.BatchFilePath = *batchFilePath
 	Config.Debug = *debug
 	Config.MetaData = *metadata
+	Config.Deadline = *deadline
 }
 
 // GetUsername - Get's username from passed URL param