mirror of
https://github.com/grafana/grafana.git
synced 2025-02-25 18:55:37 -06:00
b2a0ae0f83
This uses any available SSL protocol (instead the phantomjs default: SSLv3) to render panels to PNGs. This is useful when reverse proxing grafana and SSLv3 is disabled due to security vulnerabilities or other reasons.
66 lines
1.5 KiB
Go
66 lines
1.5 KiB
Go
package renderer
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"time"
|
|
|
|
"github.com/grafana/grafana/pkg/log"
|
|
"github.com/grafana/grafana/pkg/setting"
|
|
"github.com/grafana/grafana/pkg/util"
|
|
)
|
|
|
|
type RenderOpts struct {
|
|
Url string
|
|
Width string
|
|
Height string
|
|
SessionId string
|
|
}
|
|
|
|
func RenderToPng(params *RenderOpts) (string, error) {
|
|
log.Info("PhantomRenderer::renderToPng url %v", params.Url)
|
|
binPath, _ := filepath.Abs(filepath.Join(setting.PhantomDir, "phantomjs"))
|
|
scriptPath, _ := filepath.Abs(filepath.Join(setting.PhantomDir, "render.js"))
|
|
pngPath, _ := filepath.Abs(filepath.Join(setting.ImagesDir, util.GetRandomString(20)))
|
|
pngPath = pngPath + ".png"
|
|
|
|
cmd := exec.Command(binPath, "--ignore-ssl-errors=true", "--ssl-protocol=any", scriptPath, "url="+params.Url, "width="+params.Width,
|
|
"height="+params.Height, "png="+pngPath, "cookiename="+setting.SessionOptions.CookieName,
|
|
"domain="+setting.Domain, "sessionid="+params.SessionId)
|
|
stdout, err := cmd.StdoutPipe()
|
|
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
stderr, err := cmd.StderrPipe()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
err = cmd.Start()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
go io.Copy(os.Stdout, stdout)
|
|
go io.Copy(os.Stdout, stderr)
|
|
|
|
done := make(chan error)
|
|
go func() {
|
|
cmd.Wait()
|
|
close(done)
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(10 * time.Second):
|
|
if err := cmd.Process.Kill(); err != nil {
|
|
log.Error(4, "failed to kill: %v", err)
|
|
}
|
|
case <-done:
|
|
}
|
|
|
|
return pngPath, nil
|
|
}
|