How to use Context method of rod Package

Best Rod code snippet using rod.Context

rod.go

Source: rod.go Github

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...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,...

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use_gorod.go

Source: use_gorod.go Github

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...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{...

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main.go

Source: main.go Github

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...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"...

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Context

Using AI Code Generation

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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 (

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Context

Using AI Code Generation

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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()

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Context

Using AI Code Generation

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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)

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Context

Using AI Code Generation

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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 (

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Context

Using AI Code Generation

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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)

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Context

Using AI Code Generation

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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)

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Context

Using AI Code Generation

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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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Blogs

Check out the latest blogs from LambdaTest on this topic:

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From October 2016 to November 2017, Android released 4 major versions and iOS released 9 major updates. Its very good for users but it is problematic for developers and absolute hell for testers. One such problem testers face because of fast release cycles is Acceptance Testing.

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Taking in more information than what we can process slows us down. Be it a computer or human, no one can process beyond a specified level. If you open hundreds of apps in a computer, at same point of time it will stop working, slow down, or even crash. Same is with humans, every human has a defined cognitive load that the memory can process. Making anyone process more information than defined will result in cognitive overloading.

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While recently cleaning out my bookshelf, I dusted off my old copy of Testing Computer Software written by Cem Kaner, Hung Q Nguyen, and Jack Falk. I was given this book back in 2003 by my first computer science teacher as a present for a project well done. This brought back some memories and got me thinking how much books affect our lives even in this modern blog and youtube age. There are courses for everything, tutorials for everything, and a blog about it somewhere on medium. However nothing compares to a hardcore information download you can get from a well written book by truly legendary experts of a field.

LambdaTest One Click Integration With Bitbucket and GitLab

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Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.

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YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

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