How to use Error method of rod Package

Best Rod code snippet using rod.Error

rod-helper.go

Source:rod-helper.go Github

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1package common2import (3 "context"4 "crypto/tls"5 "errors"6 "github.com/go-rod/rod"7 "github.com/go-rod/rod/lib/launcher"8 "github.com/go-rod/rod/lib/proto"9 "net/http"10 "net/url"11 "time"12)13/**14 * @Description: 新建一个支持代理的 browser 对象15 * @param httpProxyURL http://127.0.0.1:1080916 * @return *rod.Browser17 * @return error18 */19func NewBrowser(httpProxyURL string) (*rod.Browser, error) {20 var browser *rod.Browser21 err := rod.Try(func() {22 u := launcher.New().23 Proxy(httpProxyURL).24 MustLaunch()25 browser = rod.New().ControlURL(u).MustConnect()26 })27 if err != nil {28 return nil, err29 }30 return browser, nil31}32/**33 * @Description: 访问目标 Url，返回 page，只是这个 page 有效，如果再次出发其他的事件无效34 * @param desURL 目标 Url35 * @param httpProxyURL http://127.0.0.1:1080936 * @param timeOut 超时时间37 * @param maxRetryTimes 当是非超时 err 的时候，最多可以重试几次38 * @return *rod.Page39 * @return error40 */41func NewBrowserFromDocker(httpProxyURL, remoteDockerURL string) (*rod.Browser, error) {42 var browser *rod.Browser43 err := rod.Try(func() {44 l := launcher.MustNewRemote(remoteDockerURL)45 u := l.Proxy(httpProxyURL).MustLaunch()46 l.Headless(false).XVFB()47 browser = rod.New().Client(l.Client()).ControlURL(u).MustConnect()48 })49 if err != nil {50 return nil, err51 }52 return browser, nil53}54func NewPage(browser *rod.Browser) (*rod.Page, error) {55 page, err := browser.Page(proto.TargetCreateTarget{URL: ""})56 if err != nil {57 return nil, err58 }59 return page, err60}61func NewPageNavigate(browser *rod.Browser, desURL string, timeOut time.Duration, maxRetryTimes int) (*rod.Page, error) {62 page, err := NewPage(browser)63 if err != nil {64 return nil, err65 }66 page = page.Timeout(timeOut)67 nowRetryTimes := 068 for nowRetryTimes <= maxRetryTimes {69 err = rod.Try(func() {70 wait := page.MustWaitNavigation()71 page.MustNavigate(desURL)72 wait()73 })74 if errors.Is(err, context.DeadlineExceeded) {75 // 超时76 return nil, err77 } else if err == nil {78 // 没有问题79 return page, nil80 }81 }82 return nil, err83}84func PageNavigate(page *rod.Page, desURL string, timeOut time.Duration, maxRetryTimes int) (*rod.Page, error) {85 var err error86 page = page.Timeout(timeOut)87 nowRetryTimes := 088 for nowRetryTimes <= maxRetryTimes {89 err = rod.Try(func() {90 wait := page.MustWaitNavigation()91 page.MustNavigate(desURL)92 wait()93 })94 if errors.Is(err, context.DeadlineExceeded) {95 // 超时96 return nil, err97 } else if err == nil {98 // 没有问题99 return page, nil100 }101 }102 return nil, err103}104/**105 * @Description: 访问目标 Url，返回 page，只是这个 page 有效，如果再次出发其他的事件无效106 * @param desURL 目标 Url107 * @param httpProxyURL http://127.0.0.1:10809108 * @param timeOut 超时时间109 * @param maxRetryTimes 当是非超时 err 的时候，最多可以重试几次110 * @return *rod.Page111 * @return error112 */113func NewBrowserLoadPage(desURL string, httpProxyURL string, timeOut time.Duration, maxRetryTimes int) (*rod.Page, error) {114 browser, err := NewBrowser(httpProxyURL)115 if err != nil {116 return nil, err117 }118 page, err := browser.Page(proto.TargetCreateTarget{URL: ""})119 if err != nil {120 return nil, err121 }122 page = page.Timeout(timeOut)123 nowRetryTimes := 0124 for nowRetryTimes <= maxRetryTimes {125 err = rod.Try(func() {126 wait := page.MustWaitNavigation()127 page.MustNavigate(desURL)128 wait()129 })130 if errors.Is(err, context.DeadlineExceeded) {131 // 超时132 return nil, err133 } else if err == nil {134 // 没有问题135 return page, nil136 }137 }138 return nil, err139}140/**141 * @Description: 访问目标 Url，返回 page，只是这个 page 有效，如果再次出发其他的事件无效142 * @param desURL 目标 Url143 * @param httpProxyURL http://127.0.0.1:10809144 * @param timeOut 超时时间145 * @param maxRetryTimes 当是非超时 err 的时候，最多可以重试几次146 * @return *rod.Page147 * @return error148 */149func NewBrowserLoadPageFromRemoteDocker(desURL string, httpProxyURL, remoteDockerURL string, timeOut time.Duration, maxRetryTimes int) (*rod.Page, error) {150 browser, err := NewBrowserFromDocker(httpProxyURL, remoteDockerURL)151 if err != nil {152 return nil, err153 }154 page, err := browser.Page(proto.TargetCreateTarget{URL: ""})155 if err != nil {156 return nil, err157 }158 page = page.Timeout(timeOut)159 nowRetryTimes := 0160 for nowRetryTimes <= maxRetryTimes {161 err = rod.Try(func() {162 wait := page.MustWaitNavigation()163 page.MustNavigate(desURL)164 wait()165 })166 if errors.Is(err, context.DeadlineExceeded) {167 // 超时168 return nil, err169 } else if err == nil {170 // 没有问题171 break172 }173 }174 return page, nil175}176/**177 * @Description: 访问目标 Url，返回 page，只是这个 page 有效，如果再次出发其他的事件无效178 * @param desURL 目标 Url179 * @param httpProxyURL http://127.0.0.1:10809180 * @param timeOut 超时时间181 * @param maxRetryTimes 当是非超时 err 的时候，最多可以重试几次182 * @return *rod.Page183 * @return error184 */185func NewBrowserLoadPageByHijackRequests(desURL string, httpProxyURL string, timeOut time.Duration, maxRetryTimes int) (*rod.Page, error) {186 var page *rod.Page187 var err error188 // 创建一个 page189 browser := rod.New()190 err = browser.Connect()191 if err != nil {192 return nil, err193 }194 page, err = browser.Page(proto.TargetCreateTarget{URL: ""})195 if err != nil {196 return nil, err197 }198 page = page.Timeout(timeOut)199 // 设置代理200 router := page.HijackRequests()201 defer router.Stop()202 err = rod.Try(func() {203 router.MustAdd("*", func(ctx *rod.Hijack) {204 px, _ := url.Parse(httpProxyURL)205 ctx.LoadResponse(&http.Client{206 Transport: &http.Transport{207 Proxy: http.ProxyURL(px),208 TLSClientConfig: &tls.Config{InsecureSkipVerify: true},209 },210 Timeout: timeOut,211 }, true)212 })213 })214 if err != nil {215 return nil ,err216 }217 go router.Run()218 nowRetryTimes := 0219 for nowRetryTimes <= maxRetryTimes {220 err = rod.Try(func() {221 page.MustNavigate(desURL).MustWaitLoad()222 })223 if errors.Is(err, context.DeadlineExceeded) {224 // 超时225 return nil, err226 } else if err == nil {227 // 没有问题228 break229 }230 time.Sleep(time.Second)231 nowRetryTimes++232 }233 return page, nil234}...

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rod.go

Source:rod.go Github

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...21func (rod Rod) Validate() error {22 return validation.ValidateStruct(&rod,23 validation.Field(24 &rod.Name,25 validation.Required.Error("Name is required"),26 validation.RuneLength(1, 40).Error("Name should be less thna 40 letters"),27 ),28 validation.Field(29 &rod.CompanyName,30 validation.RuneLength(1, 80).Error("CompanyName should be less thna 80 letters"),31 ),32 )33}34/**35 ロッド一覧取得36*/37func GetAllRods(rods []Rod, uid int) []Rod {38 db := database.GetDBConn()39 // ログインユーザは自分のロッドしか見れない40 db.Where("user_id = ?", uid).Preload("RodImage").Preload("RodHardnessCondition").Find(&rods)41 return rods42}43/**44 ロッド取得45*/46func GetRod(rod Rod, rod_id int, uid int) Rod {47 db := database.GetDBConn()48 // ログインユーザは自分のロッドしか見れない49 db.Where("user_id = ?", uid).Preload("RodImage").Preload("RodHardnessCondition").First(&rod, rod_id)50 return rod51}52/**53 ロッド更新54*/55func UpdateRod(r Rod, rod_id int) error {56 var rod Rod57 db := database.GetDBConn()58 // ログインユーザは自分のロッドしか見れない59 db.Where("user_id = ?", r.UserId).First(&rod, rod_id)60 result := db.Model(&rod).Updates(Rod{61 Name: r.Name,62 UserId: r.UserId,63 Hardness: r.Hardness,64 Length: r.Length,65 CompanyName: r.CompanyName,66 }).Error67 return result68}69/**70 ロッド作成71*/72func CreateRod(rod Rod, image Image) error {73 // ロッド画像モデル74 var rod_image RodImage75 db := database.GetDBConn()76 result := db.Transaction(func(tx *gorm.DB) error {77 if err := tx.Create(&rod).Error; err != nil {78 // エラーの場合ロールバックされる79 return err80 }81 if (Image{}) != image { // 画像データがセットされている場合82 // 画像データにロッドIDをセット83 rod_image.RodId = rod.ID84 file_name := CreateImageName()85 image_path := "/rod_image/" + strconv.Itoa(rod.UserId) + "/" + file_name86 rod_image.ImageFile = image_path87 if err := tx.Create(&rod_image).Error; err != nil {88 // エラーの場合ロールバックされる89 return err90 }91 // S3に画像アップロード92 UploadToS3(image, image_path)93 }94 // nilが返却されるとトランザクション内の全処理がコミットされる95 return nil96 })97 return result98}99/**100 ロッド削除101*/102func DeleteRod(rod Rod, rod_id int) error {103 db := database.GetDBConn()104 db.First(&rod, rod_id)105 result := db.Delete(&rod).Error106 return result107}...

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webdriver.go

Source:webdriver.go Github

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...38 ControlURL(url).39 Trace(trace).40 SlowMotion(motion).41 MustConnect()42 browser.MustIgnoreCertErrors(true)43 return &RodSession{44 Launcher: l,45 WebDriver: browser,46 }, nil47}48// StartRod create a rod/chromedp session.49func StartRod() (*RodSession, error) {50 return StartRodWithProxy("")51}52// Stop stop the rod/chromedp session.53func (rs *RodSession) Stop() error {54 err := rs.WebDriver.Close()55 if err != nil {56 return err57 }58 rs.Launcher.Cleanup()59 return err60}61// WaitElementLocatedByClassName wait an element is located by class name.62func (rs *RodSession) WaitElementLocatedByClassName(t *testing.T, page *rod.Page, className string) *rod.Element {63 e, err := page.Element("." + className)64 require.NoError(t, err)65 require.NotNil(t, e)66 return e67}68// WaitElementLocatedByID waits for an element located by an id.69func (rs *RodSession) WaitElementLocatedByID(t *testing.T, page *rod.Page, cssSelector string) *rod.Element {70 e, err := page.Element("#" + cssSelector)71 require.NoError(t, err)72 require.NotNil(t, e)73 return e74}75// WaitElementsLocatedByID waits for an elements located by an id.76func (rs *RodSession) WaitElementsLocatedByID(t *testing.T, page *rod.Page, cssSelector string) rod.Elements {77 e, err := page.Elements("#" + cssSelector)78 require.NoError(t, err)79 require.NotNil(t, e)80 return e81}82func (rs *RodSession) waitBodyContains(t *testing.T, page *rod.Page, pattern string) {83 text, err := page.MustElementR("body", pattern).Text()84 require.NoError(t, err)85 require.NotNil(t, text)86 if strings.Contains(text, pattern) {87 err = nil88 } else {89 err = fmt.Errorf("body does not contain pattern: %s", pattern)90 }91 require.NoError(t, err)92}...

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Error

Using AI Code Generation

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1import (2func main() {3 _, err := Sqrt(-2)4 if err != nil {5 fmt.Println(err)6 }7}8func Sqrt(f float64) (float64, error) {9 if f < 0 {10 return 0, fmt.Errorf("cannot Sqrt negative number: %v", f)11 }12 return math.Sqrt(f), nil13}14import (15func main() {16 _, err := Sqrt(-2)17 if err != nil {18 fmt.Println(err)19 }20}21func Sqrt(f float64) (float64, error) {22 if f < 0 {23 return 0, fmt.Errorf("cannot Sqrt negative number: %v", f)24 }25 return math.Sqrt(f), nil26}27import (28func main() {29 _, err := Sqrt(-2)30 if err != nil {31 fmt.Println(err)32 }33}34func Sqrt(f float64) (float64, error) {35 if f < 0 {36 return 0, fmt.Errorf("cannot Sqrt negative number: %v", f)37 }38 return math.Sqrt(f), nil39}40import (41func main() {42 _, err := Sqrt(-2)43 if err != nil {44 fmt.Println(err)45 }46}47func Sqrt(f float64) (float64, error) {48 if f < 0 {49 return 0, fmt.Errorf("cannot Sqrt negative number: %v", f)50 }51 return math.Sqrt(f), nil52}53import (

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Error

Using AI Code Generation

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1import (2func main() {3 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {4 fmt.Fprintln(w, "Hello World!")5 })6 err := http.ListenAndServe(":8080", nil)7 if err != nil {8 log.Fatal(err)9 }10}11import (12func main() {13 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {14 fmt.Fprintln(w, "Hello World!")15 })16 err := http.ListenAndServe(":8080", nil)17 if err != nil {18 log.Fatalf("ListenAndServe: %v", err)19 }20}21import (22func main() {23 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {24 fmt.Fprintln(w, "Hello World!")25 })26 err := http.ListenAndServe(":8080", nil)27 if err != nil {28 log.Fatalf("ListenAndServe: %v", err)29 }30}31import (32func main() {33 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {34 fmt.Fprintln(w, "Hello World!")35 })36 err := http.ListenAndServe(":8080", nil)37 if err != nil {38 log.Fatal(err)39 }40}41import (42func main() {43 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {44 fmt.Fprintln(w, "Hello World!")45 })46 err := http.ListenAndServe(":8080", nil)47 if err != nil {48 log.Panicf("ListenAndServe: %v", err)49 }50}51import (52func main() {53 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {

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Error

Using AI Code Generation

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1import (2func main() {3 err := errors.New("This is an error")4 fmt.Println(err)5}6import (7func main() {8 err := fmt.Errorf("This is an error")9 fmt.Println(err)10}11import (12func main() {13 err := fmt.Errorf("%d", 123)14 fmt.Println(err)15}16import (17func main() {18 err := fmt.Errorf("%d", 123)19 fmt.Println(err)20 fmt.Printf("%T", err)21}22import (23func main() {24 err := fmt.Errorf("%d", 123)25 fmt.Println(err)26 fmt.Printf("%T", err)27 fmt.Printf("%v", err)28}29import (30func main() {31 err := fmt.Errorf("%d", 123)32 fmt.Println(err)33 fmt.Printf("%T", err)34 fmt.Printf("%v", err)35 fmt.Printf("%q", err)36}37import (38func main() {39 err := fmt.Errorf("%d", 123)40 fmt.Println(err)41 fmt.Printf("%T", err)42 fmt.Printf("%v", err)43 fmt.Printf("%q", err)44 fmt.Printf("%s", err)45}

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Error

Using AI Code Generation

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1import (2func main() {3 browser := rod.New().MustConnect()4 page.MustElement("input[name=q]").MustInput("rod").MustPress(input.Enter)5 page.MustElement("h3").MustClick()6 page.MustElement("h1").MustHandleError(func(e *rod.Error) {7 fmt.Println(e)8 })9}10import (11func main() {12 browser := rod.New().MustConnect()13 page.MustElement("input[name=q]").MustInput("rod").MustPress(input.Enter)14 page.MustElement("h3").MustClick()15 page.MustElement("h1").MustHandleError(func(e *rod.Error) {16 fmt.Println(e)17 })18}19import (20func main() {21 browser := rod.New().MustConnect()22 page.MustElement("input[name=q]").MustInput("rod").MustPress(input.Enter)23 page.MustElement("h3").MustClick()24 page.MustElement("h1").MustHandleError(func(e *rod.Error) {25 fmt.Println(e)26 })27}28import (29func main() {30 browser := rod.New().MustConnect()31 page.MustElement("input[name=q]").MustInput("rod").MustPress(input.Enter)32 page.MustElement("h3").MustClick()33 page.MustElement("h1").MustHandleError(func(e *rod.Error) {34 fmt.Println(e)35 })36}37import (

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1import (2type Rod struct {3}4func (r Rod) Error() string {5 return fmt.Sprintf("Rod length is %f", r.Length)6}7func main() {8 r := Rod{Length: -1}9 if r.Length < 0 {10 fmt.Println(r.Error())11 os.Exit(1)12 }13}14import (15type Rod struct {16}17func (r Rod) Error() string {18 return fmt.Sprintf("Rod length is %f", r.Length)19}20func main() {21 r := Rod{Length: -1}22 if r.Length < 0 {23 fmt.Println(r.Error())24 os.Exit(1)25 }26}27import (28type Rod struct {29}30func (r Rod) Error() string {31 return fmt.Sprintf("Rod length is %f", r.Length)32}33func main() {34 r := Rod{Length: -1}35 if r.Length < 0 {36 fmt.Println(r.Error())37 os.Exit(1)38 }39}40import (41type Rod struct {42}43func (r Rod) Error() string {44 return fmt.Sprintf("Rod length is %f", r.Length)45}46func main() {47 r := Rod{Length: -1}48 if r.Length < 0 {49 fmt.Println(r.Error())50 os.Exit(1)51 }52}53import (54type Rod struct {55}56func (r Rod) Error() string {57 return fmt.Sprintf("Rod length is %f", r.Length)58}59func main() {60 r := Rod{Length:

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Error

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1import (2type Rod struct {3}4func (r Rod) Error() string {5 return fmt.Sprintf("A rod's length cannot be less than zero. It was %d", r.Length)6}7func main() {8 rod := Rod{Length: -1}9 _, err := calculateCost(rod)10 if err != nil {11 log.Fatal(err)12 }13}14func calculateCost(rod Rod) (int, error) {15 if rod.Length < 0 {16 }17}18import (19type Rod struct {20}21func (r Rod) Error() string {22 return fmt.Sprintf("A rod's length cannot be less than zero. It was %d", r.Length)23}24func main() {25 rod := Rod{Length: -1}26 _, err := calculateCost(rod)27 if err != nil {28 log.Fatal(err)29 }30}31func calculateCost(rod Rod) (int, error) {32 if rod.Length < 0 {33 }34}35import (36type Rod struct {37}38func (r Rod) Error() string {39 return fmt.Sprintf("A rod's length cannot be less than zero. It was %d", r.Length)40}41func main() {42 rod := Rod{Length: -1}43 _, err := calculateCost(rod)44 if err != nil {45 log.Fatal(err)46 }47}48func calculateCost(rod Rod) (int, error) {49 if rod.Length < 0 {50 }51}

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