Files
gotenberg/internal/pkg/pm2/chrome.go
2019-07-07 19:54:44 +02:00

109 lines
2.2 KiB
Go

package pm2
import (
"context"
"time"
"github.com/mafredri/cdp/devtool"
"github.com/thecodingmachine/gotenberg/internal/pkg/logger"
"github.com/thecodingmachine/gotenberg/internal/pkg/standarderror"
)
const warmupTime = 10 * time.Second
type chrome struct {
manager *processManager
}
// NewChrome returns a Google Chrome
// headless process.
func NewChrome(logger *logger.Logger) Process {
return &chrome{
manager: &processManager{logger: logger},
}
}
func (p *chrome) Fullname() string {
return "Google Chrome headless"
}
func (p *chrome) Start() error {
const op = "chrome.Start"
if err := p.manager.start(p); err != nil {
return &standarderror.Error{Op: op, Err: err}
}
return nil
}
func (p *chrome) Shutdown() error {
const op = "chrome.Shutdown"
if err := p.manager.shutdown(p); err != nil {
return &standarderror.Error{Op: op, Err: err}
}
return nil
}
func (p *chrome) args() []string {
return []string{
"--no-sandbox",
"--headless",
"--remote-debugging-port=9222",
"--disable-gpu",
"--disable-translate",
"--disable-extensions",
"--disable-background-networking",
"--safebrowsing-disable-auto-update",
"--disable-sync",
"--disable-default-apps",
"--hide-scrollbars",
"--metrics-recording-only",
"--mute-audio",
"--no-first-run",
}
}
func (p *chrome) name() string {
return "google-chrome-stable"
}
func (p *chrome) viable() bool {
const debugOp = "chrome.viable"
// check if Google Chrome is correctly running.
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
p.manager.logger.DebugfOp(
debugOp,
"checking liveness via debug version endpoint http://localhost:9222/json/version",
)
v, err := devtool.New("http://localhost:9222").Version(ctx)
if err != nil {
p.manager.logger.DebugfOp(
debugOp,
"debug version endpoint returned error: %v",
err,
)
return false
}
p.manager.logger.DebugfOp(
debugOp,
"debug version endpoint returned version info: %+v",
*v,
)
return true
}
func (p *chrome) warmup() {
const debugOp = "chrome.warmup"
p.manager.logger.DebugfOp(
debugOp,
"allowing %v to startup",
warmupTime,
)
time.Sleep(warmupTime)
}
// Compile-time checks to ensure type implements desired interfaces.
var (
_ = Process(new(chrome))
)