mirror of https://github.com/grafana/grafana.git
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package api
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import (
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"fmt"
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"net/http"
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"github.com/grafana/grafana/pkg/components/renderer"
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"github.com/grafana/grafana/pkg/middleware"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/util"
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)
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func RenderToPng(c *middleware.Context) {
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queryReader := util.NewUrlQueryReader(c.Req.URL)
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queryParams := fmt.Sprintf("?%s", c.Req.URL.RawQuery)
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sessionId := c.Session.ID()
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// Handle api calls authenticated without session
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if sessionId == "" && c.ApiKeyId != 0 {
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c.Session.Start(c)
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c.Session.Set(middleware.SESS_KEY_APIKEY, c.ApiKeyId)
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// release will make sure the new session is persisted before
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// we spin up phantomjs
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c.Session.Release()
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// cleanup session after render is complete
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defer func() { c.Session.Destory(c) }()
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}
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renderOpts := &renderer.RenderOpts{
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Url: c.Params("*") + queryParams,
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Width: queryReader.Get("width", "800"),
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Height: queryReader.Get("height", "400"),
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SessionId: c.Session.ID(),
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}
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renderOpts.Url = setting.ToAbsUrl(renderOpts.Url)
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pngPath, err := renderer.RenderToPng(renderOpts)
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if err != nil {
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c.Handle(500, "Failed to render to png", err)
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return
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}
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c.Resp.Header().Set("Content-Type", "image/png")
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http.ServeFile(c.Resp, c.Req.Request, pngPath)
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}
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