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How to use Context method of rod Package

Best Rod code snippet using rod.Context

rod.go

Source:rod.go

...29	config   bbb.Config30	rod      Config31	launcher *launcher.Launcher32	browser  *rod.Browser33	ctx      context.Context34}35func (b *bb) Init(ctx context.Context) error {36	b.ctx = ctx37	b.launcher = launcher.New().Context(ctx)38	if b.rod.ShowUi {39		b.launcher.Headless(false)40	}41	url, err := b.launcher.Launch()42	if err != nil {43		b.Done()44		return err45	}46	b.browser = rod.New().Context(ctx).ControlURL(url)47	err = b.browser.Connect()48	if err != nil {49		b.browser = nil50		b.Done()51		return err52	}53	//TODO detect browser close in some way54	return nil55}56func (b *bb) Generate() <-chan bbb.Task {57	return bbb.Generator(b.ctx, b.config.Urls, b.config.Log)58}59func (b *bb) Worker(tasks <-chan bbb.Task) {60	page := stealth.MustPage(b.browser).Context(b.ctx)61	errP := &errPusher{}62	ddos := &ddosDetector{}63	go page.EachEvent(func(e *proto.NetworkResponseReceived) {64		b.config.Log.LogFn(b.ctx, bbb.LogLevelVerbose, fmt.Sprintf("Fetched %q, status %d", e.Response.URL, e.Response.Status))65		if strings.Contains(e.Response.URL, "ddos") {66			ddos.setDdos()67		}68		if e.Type == "Document" && e.Response.Status >= http.StatusBadRequest {69			if e.Response.StatusText != "" {70				errP.Push(errors.New(e.Response.StatusText))71			} else if e.Response.Status >= http.StatusInternalServerError {72				errP.Push(fmt.Errorf("status %d", e.Response.Status))73			}74		}75	})()76	for t := range tasks {77		doTask(page, t, b.config, errP, ddos)78	}79}80func doTask(page *rod.Page, t bbb.Task, config bbb.Config, errP *errPusher, ddos *ddosDetector) {81	defer rec(page.GetContext(), t, config.Log)82	errc := make(chan error, 1)83	errP.Install(errc)84	defer errP.Cleanup()85	timeout, hasTimeout := config.Workers.GetTimeout()86	if hasTimeout {87		p, cancel := ddos.withTimeout(page, timeout, config.Log)88		defer cancel()89		page = p90	}91	config.Log.LogFn(page.GetContext(), bbb.LogLevelVerbose, "Navigating to "+t.Url)92	page.MustNavigate(t.Url)93	page.MustWaitLoad()94	select {95	case err := <-errc:96		config.Log.UpdateFn(page.GetContext(), bbb.UrlUpdate{97			Url:   t.UrlConfig,98			Index: t.Index,99			Err:   err,100		})101	default:102		config.Log.UpdateFn(page.GetContext(), bbb.UrlUpdate{103			Url:   t.UrlConfig,104			Index: t.Index,105			Ok:    true,106		})107	}108}109type errPusher struct {110	ch atomic.Value111}112func (e *errPusher) Push(err error) {113	i := e.ch.Load()114	if i == nil {115		return116	}117	ch := i.(chan error)118	if ch == nil {119		return120	}121	select {122	case ch <- err:123	default:124	}125}126func (e *errPusher) Install(ch chan error) {127	e.ch.Store(ch)128}129func (e *errPusher) Cleanup() {130	var ch chan error131	e.ch.Store(ch)132}133type ddosDetector struct {134	ch atomic.Value135}136func (d *ddosDetector) withTimeout(parent *rod.Page, dur time.Duration, log bbb.LogConfig) (*rod.Page, context.CancelFunc) {137	//ctx, cancel := context.WithCancel(parent)138	page, cancel := parent.WithCancel()139	done := make(chan struct{})140	go func() {141		timer := time.NewTimer(dur)142		defer timer.Stop()143		select {144		case <-timer.C:145			cancel()146		case <-done:147		case <-d.ddos():148			log.LogFn(parent.GetContext(), bbb.LogLevelVerbose, "timeout cancelled 'cause of ddos protection")149		}150	}()151	return page, func() {152		close(done)153		cancel()154	}155}156func (d *ddosDetector) ddos() <-chan struct{} {157	ch := make(chan struct{}, 1)158	d.ch.Store(ch)159	return ch160}161func (d *ddosDetector) setDdos() {162	i := d.ch.Load()163	if i == nil {164		return165	}166	ch := i.(chan struct{})167	if ch == nil {168		return169	}170	select {171	case ch <- struct{}{}:172	default:173	}174}175func rec(ctx context.Context, t bbb.Task, log bbb.LogConfig) {176	crash := recover()177	if crash == nil {178		return179	}180	var err error181	if e, ok := crash.(error); ok {182		err = e183	} else {184		err = fmt.Errorf("%v", crash)185	}186	log.UpdateFn(ctx, bbb.UrlUpdate{187		Url:   t.UrlConfig,188		Index: t.Index,189		Err:   err,...

use_gorod.go

Source:use_gorod.go

...63	// defer m.Browser.MustClose()64	return m65}66func goRodRender(w http.ResponseWriter, r *http.Request) {67	cfg := r.Context().Value("cfg").(config.IManager)68	cdp := r.Context().Value("cdp").(IManager)69	mapping := cfg.GetMapByHost(r.Host)70	if mapping == nil {71		_, _ = fmt.Fprint(w, "")72		return73	}74	// browser.Logger(rod.DefaultLogger).Trace(true)75	page := cdp.GetBrowser().MustPage("")76	wait := page.MustWaitRequestIdle()77	err := rod.Try(func() {78		page.79			Context(r.Context()).80			Timeout(10 * time.Second).81			MustNavigate(fmt.Sprintf("%s%s", mapping.ToBaseUrl, r.URL.Path))82	})83	if errors.Is(err, context.DeadlineExceeded) {84		// in case want to handle on timeout differently85		_, _ = fmt.Fprint(w, "")86		return87	} else if err != nil {88		_, _ = fmt.Fprint(w, "")89		return90	}91	// Custom function to add script tag with its content to body92	addScriptTagToBody := func(p *rod.Page, value string) error {93		var addScriptHelper = &js.Function{...

main.go

Source:main.go

...11// 	defer ccancel()12// 	var wg sync.WaitGroup13// 	for i := 0; i < 10; i++ {14// 		wg.Add(1)15// ctx, _ = chromedp.NewContext(ctx)16// fmt.Println("starting: routine ", i)17// go chromedp.Run(context.Background(), chromedp.Navigate("https://twitch.tv/superserverbrasil"), chromedp.ActionFunc(func(ctx context.Context) error {18// 	fmt.Println("go routine ", i)19// 	defer wg.Done()20// 	time.Sleep(time.Minute * 10)21// 	return nil22// }))23// }24// defer cancel()25// time.After(time.Minute)26// 	wg.Wait()27// }28// import (29// 	"fmt"30// 	"log"31// 	"gopkg.in/headzoo/surf.v1"...

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	page := browser.Page("")5	page.WaitLoad()6	input := page.Element(`input[name="q"]`)7	input.Input("rod")8	input.MustPress(input.Enter)9	page.WaitLoad()10	text := page.MustElement("#search .g").MustText()11	fmt.Println(text)12	browser.Close()13}14import (15func main() {16	browser := rod.New().Connect()17	page := browser.Page("")18	page.WaitLoad()19	input := page.Element(`input[name="q"]`)20	input.Input("rod")21	input.MustPress(input.Enter)22	page.WaitLoad()23	text := page.MustElement("#search .g").MustText()24	fmt.Println(text)25	browser.Close()26}27import (

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	contextID := page.MustContextID()5	contextID2 := page2.MustContextID()6	contextID3 := page3.MustContextID()7	contextID4 := page4.MustContextID()8	contextID5 := page5.MustContextID()9	contextID6 := page6.MustContextID()10	contextID7 := page7.MustContextID()11	contextID8 := page8.MustContextID()12	contextID9 := page9.MustContextID()13	contextID10 := page10.MustContextID()

Context

Using AI Code Generation

1import (2func main() {3	l := launcher.New().Bin("chromium").Headless(false).MustLaunch()4	browser := rod.New().ControlURL(l).MustConnect()5	title := page.MustTitle()6	fmt.Println(title)7	cookies := page.MustCookies()8	fmt.Println(cookies)

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	defer browser.Close()5	page.MustElement("#tsf > div:nth-child(2) > div > div.RNNXgb > div > div.a4bIc > input").MustInput("Rod Page Object")6	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.VlcLAe > center > input.gNO89b").MustClick()7	time.Sleep(5 * time.Second)8	title := page.MustTitle()9	fmt.Println(title)10}11import (12func main() {13	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()14	defer browser.Close()15	page.MustElement("#tsf > div:nth-child(2) > div > div.RNNXgb > div > div.a4bIc > input").MustInput("Rod Page Object")16	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.VlcLAe > center > input.gNO89b").MustClick()17	page.MustWaitLoad()18	title := page.MustTitle()19	fmt.Println(title)20}21import (

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	pngFile, err := os.Create("google.png")5	if err != nil {6		fmt.Println(err)7	}8	defer pngFile.Close()9	img, err := page.Element("body").Screenshot()10	if err != nil {11		fmt.Println(err)12	}13	err = png.Encode(pngFile, img)14	if err != nil {15		fmt.Println(err)16	}17}18import (19func main() {20	browser := rod.New().MustConnect()21	pngFile, err := os.Create("google.png")22	if err != nil {23		fmt.Println(err)24	}25	defer pngFile.Close()26	img, err := page.Element("body").Screenshot()27	if err != nil {28		fmt.Println(err)29	}30	err = png.Encode(pngFile, img)31	if err != nil {32		fmt.Println(err)33	}34}35import (36func main() {37	browser := rod.New().MustConnect()38	pngFile, err := os.Create("google.png")39	if err != nil {40		fmt.Println(err)41	}42	defer pngFile.Close()43	img, err := page.Element("body").Screenshot()44	if err != nil {45		fmt.Println(err)46	}47	err = png.Encode(pngFile, img)48	if err != nil {49		fmt.Println(err)

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	page := browser.Page("")5	title := page.Title()6	fmt.Println(title)7	url := page.URL()8	fmt.Println(url)9	page2 := browser.Page("")10	title2 := page2.Title()11	fmt.Println(title2)12	url2 := page2.URL()13	fmt.Println(url2)14	browser.Close()15}16import (17func main() {18	browser := rod.New().Connect()19	page := browser.Page("")20	title := page.Title()21	fmt.Println(title)22	url := page.URL()23	fmt.Println(url)24	page2 := browser.Page("")25	title2 := page2.Title()26	fmt.Println(title2)27	url2 := page2.URL()28	fmt.Println(url2)29	browser.Close()30}31import (32func main() {33	browser := rod.New().Connect()34	page := browser.Page("")35	title := page.Title()36	fmt.Println(title)

Context

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	page.Keyboard.Press('a', 'b', 'c', rod.Enter)5	fmt.Println(page.Element("body").Text())6}7import (8func main() {9	browser := rod.New().Connect()10	page.Keyboard.Press('a', 'b', 'c', rod.Enter)11	fmt.Println(page.Element("body").Text())12}13import (14func main() {15	browser := rod.New().Connect()16	page.Keyboard.Press('a', 'b', 'c', rod.Enter)17	fmt.Println(page.Element("body").Text())18}19import (20func main() {21	browser := rod.New().Connect()22	page.Keyboard.Press('a', 'b', 'c', rod.Enter)23	fmt.Println(page.Element("body").Text())24}25import (26func main() {27	browser := rod.New().Connect()28	page.Keyboard.Press('a', 'b', 'c', rod.Enter)29	fmt.Println(page.Element("body").Text())30}31import (32func main() {33	browser := rod.New().Connect()34	page.Keyboard.Press('a', 'b', 'c', rod.Enter)35	fmt.Println(page.Element("body").Text())36}

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