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rendering

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This commit is contained in:
Torkel Ödegaard
2014-10-01 21:07:58 +02:00
parent 4a73e2d0e9
commit 05f9e5eef1
5 changed files with 40 additions and 17 deletions
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17
pkg/api/api_render.go
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@@ -3,22 +3,29 @@ package api
import (
"strconv"
log "github.com/alecthomas/log4go"
"github.com/gin-gonic/gin"
"github.com/torkelo/grafana-pro/pkg/components"
)
func init() {
addRoutes(func(self *HttpServer) {
self.addRoute("GET", "/api/render/*url", self.renderToPng)
self.addRoute("GET", "/render/*url", self.renderToPng)
})
}
func (self *HttpServer) renderToPng(c *gin.Context, auth *authContext) {
url := c.Params.ByName("url")
accountId := auth.getAccountId()
query := c.Request.URL.Query()
queryParams := "?render&accountId=" + strconv.Itoa(accountId) + "&" + c.Request.URL.RawQuery
renderOpts := &components.RenderOpts{
Url: c.Params.ByName("url") + queryParams,
Width: query["width"][0],
Height: query["height"][0],
}
log.Info("Rendering url %v", url)
pngPath, err := self.renderer.RenderToPng("http://localhost:3000" + url + "?render&accountId=" + strconv.Itoa(accountId))
renderOpts.Url = "http://localhost:3000" + renderOpts.Url
pngPath, err := self.renderer.RenderToPng(renderOpts)
if err != nil {
c.HTML(500, "error.html", nil)
}

14
pkg/components/phantom_renderer.go
View File

@@ -17,14 +17,20 @@ type PhantomRenderer struct {
PhantomDir string
}
func (self *PhantomRenderer) RenderToPng(url string) (string, error) {
log.Info("PhantomRenderer::renderToPng url %v", url)
type RenderOpts struct {
Url string
Width string
Height string
}
func (self *PhantomRenderer) RenderToPng(params *RenderOpts) (string, error) {
log.Info("PhantomRenderer::renderToPng url %v", params.Url)
binPath, _ := filepath.Abs(filepath.Join(self.PhantomDir, "phantomjs"))
scriptPath, _ := filepath.Abs(filepath.Join(self.PhantomDir, "render.js"))
pngPath, _ := filepath.Abs(filepath.Join(self.ImagesDir, getHash(url)))
pngPath, _ := filepath.Abs(filepath.Join(self.ImagesDir, getHash(params.Url)))
pngPath = pngPath + ".png"
cmd := exec.Command(binPath, scriptPath, "url="+url, "width=100", "height=100", "png="+pngPath)
cmd := exec.Command(binPath, scriptPath, "url="+params.Url, "width="+params.Width, "height="+params.Height, "png="+pngPath)
stdout, err := cmd.StdoutPipe()
if err != nil {