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ssfactory.go
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ssfactory.go
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package ssfactory
import (
"fmt"
"time"
"github.com/pog7x/ssfactory/internal/chromedrv"
"github.com/pog7x/ssfactory/internal/firefoxdrv"
"github.com/pog7x/ssfactory/internal/workerpool"
"github.com/tebeka/selenium"
)
const (
FirefoxName = "firefox"
ChromeName = "chrome"
)
const (
ByID = "id"
ByXPATH = "xpath"
ByLinkText = "link text"
ByPartialLinkText = "partial link text"
ByName = "name"
ByTagName = "tag name"
ByClassName = "class name"
ByCSSSelector = "css selector"
)
type Factory struct {
wp *workerpool.WorkerPool
firefoxService *firefoxdrv.ServiceFirefox
chromeService *chromedrv.ServiceChrome
capabilities selenium.Capabilities
webdriverPort uint16
webdriver *selenium.WebDriver
urlBase string
}
type InitFactory struct {
WebdriverPort uint16
UseBrowser string
FirefoxBinaryPath string
FirefoxArgs []string
GeckodriverPath string
ChromeBinaryPath string
ChromeArgs []string
ChromedriverPath string
WorkersCount int
}
func NewFactory(init InitFactory) (*Factory, func(), error) {
f := &Factory{
capabilities: selenium.Capabilities{"browserName": init.UseBrowser},
webdriverPort: init.WebdriverPort,
wp: workerpool.NewWP(init.WorkersCount),
}
switch init.UseBrowser {
case FirefoxName:
firefoxSvc, err := firefoxdrv.NewServiceFirefox(
firefoxdrv.InitFirefox{
WebdriverPort: init.WebdriverPort,
FirefoxBinaryPath: init.FirefoxBinaryPath,
GeckodriverPath: init.GeckodriverPath,
FirefoxArgs: init.FirefoxArgs,
},
)
if err != nil {
return nil, func() {}, err
}
f.firefoxService = firefoxSvc
f.capabilities.AddFirefox(f.firefoxService.FirefoxCaps)
case ChromeName:
chromeSvc, err := chromedrv.NewServiceChrome(
chromedrv.InitChrome{
WebdriverPort: init.WebdriverPort,
ChromeBinaryPath: init.ChromeBinaryPath,
ChromedriverPath: init.ChromedriverPath,
ChromeArgs: init.ChromeArgs,
},
)
if err != nil {
return nil, func() {}, err
}
f.chromeService = chromeSvc
f.capabilities.AddChrome(f.chromeService.ChromeCaps)
f.urlBase = "/wd/hub"
default:
return nil, func() {}, fmt.Errorf("specified invalid browser name (%s)", init.UseBrowser)
}
if err := f.runFactory(); err != nil {
return nil, func() {}, err
}
return f, f.stopFactory, nil
}
func (f *Factory) runFactory() error {
f.wp.Run()
wd, err := selenium.NewRemote(f.capabilities, fmt.Sprintf("http://localhost:%d%s", f.webdriverPort, f.urlBase))
if err != nil {
return err
}
f.webdriver = &wd
return nil
}
func (f *Factory) stopFactory() {
if f.webdriver != nil {
if err := (*f.webdriver).Quit(); err != nil {
}
}
if f.firefoxService != nil {
if err := f.firefoxService.Stop(); err != nil {
}
}
if f.chromeService != nil {
if err := f.chromeService.Stop(); err != nil {
}
}
if f.wp != nil {
f.wp.Stop()
}
}
type bytesHandler func([]byte) error
type MakeScreenshotPayload struct {
URL string
DOMElementBy string
DOMElementName string
Scroll bool
MaximizeWindow *string
Timeout time.Duration
BytesHandler bytesHandler
}
func (f *Factory) MakeScreenshot(p MakeScreenshotPayload) {
f.wp.Do(func() {
if err := (*f.webdriver).Get(p.URL); err != nil {
return
}
if p.MaximizeWindow != nil {
if err := (*f.webdriver).MaximizeWindow(*p.MaximizeWindow); err != nil {
return
}
}
if p.Timeout != 0 {
if err := (*f.webdriver).WaitWithTimeout(
func(wd selenium.WebDriver) (bool, error) { return false, nil },
p.Timeout,
); err != nil {
return
}
}
elem, err := (*f.webdriver).FindElement(p.DOMElementBy, p.DOMElementName)
if err != nil {
return
}
screenshotBytes, err := elem.Screenshot(p.Scroll)
if err != nil {
return
}
p.BytesHandler(screenshotBytes)
})
}