func toCache(root, node, id string, content []byte,
mods *service.CacheMods) error {
// Write deps to filesystem.
thisDep := service.CacheDep{Node: node, Cache: id}
if mods != nil {
for _, dep := range mods.Deps {
err := appendRdeps(root, dep, []service.CacheDep{thisDep})
if err != nil {
return fmt.Errorf("Could not write rdeps: %v", err)
}
}
}
// Write cache to filesystem.
nodePath := filepath.Join(root, node[1:])
path := filepath.Join(nodePath, ".data", filepath.Base(id))
if err := os.MkdirAll(filepath.Dir(path), 0770); err != nil {
return fmt.Errorf("Could not create node cache directory: %v", err)
}
if mods != nil {
mods.Deps = nil
}
var raw bytes.Buffer
enc := gob.NewEncoder(&raw)
data := cacheData{Data: content, CacheMods: mods}
if err := enc.Encode(&data); err != nil {
return fmt.Errorf("Could not encode cache data: %v", err)
}
if err := ioutil.WriteFile(path, raw.Bytes(), 0660); err != nil {
return fmt.Errorf("Could not write node cache: %v", err)
}
return nil
}
// ViewNode handles node views.
func (h *nodeHandler) View(c *reqContext) error {
// Redirect if trailing slash is missing and if this is not a file
// node (in which case we write out the file's content).
if c.Node.Path[len(c.Node.Path)-1] != '/' {
if c.Node.Type.Id == "core.Image" || c.Node.Type.Id == "core.File" {
c.Res.Header().Add("Last-Modified", c.Node.Changed.Format(time.RFC1123))
}
if c.Node.Type.Id == "core.Image" {
return h.viewImage(c)
} else if c.Node.Type.Id == "core.File" {
content, err := c.Serv.Monsti().GetNodeData(c.Site, c.Node.Path,
"__file_core.File")
if err != nil {
return fmt.Errorf("Could not read file: %v", err)
}
c.Res.Write(content)
} else {
newPath, err := url.Parse(c.Node.Path + "/")
if err != nil {
serveError("Could not parse request URL: %v", err)
}
url := c.Req.URL.ResolveReference(newPath)
http.Redirect(c.Res, c.Req, url.String(), http.StatusSeeOther)
}
return nil
}
var rendered []byte
var err error
mods := new(service.CacheMods)
if c.UserSession.User == nil && len(c.Req.Form) == 0 {
rendered, mods, err = c.Serv.Monsti().FromCache(c.Site, c.Node.Path,
"core.page.partial")
if err != nil {
return fmt.Errorf("Could not get partial cache: %v", err)
}
}
if rendered == nil {
rendered, mods, err = h.RenderNode(c, nil)
if err != nil {
if e, ok := err.(errRedirect); ok {
http.Redirect(c.Res, c.Req, e.URL, e.Status)
return nil
}
return fmt.Errorf("Could not render node: %v", err)
}
if c.UserSession.User == nil && len(c.Req.Form) == 0 {
if err := c.Serv.Monsti().ToCache(c.Site, c.Node.Path,
"core.page.partial", rendered, mods); err != nil {
return fmt.Errorf("Could not cache page: %v", err)
}
}
}
env := masterTmplEnv{Node: c.Node, Session: c.UserSession}
content, renderMods := renderInMaster(h.Renderer, rendered, env, h.Settings,
c.Site, c.SiteSettings, c.UserSession.Locale, c.Serv)
mods.Join(renderMods)
if c.UserSession.User == nil && len(c.Req.Form) == 0 {
if err := c.Serv.Monsti().ToCache(c.Site, c.Node.Path,
"core.page.full", content, mods); err != nil {
return fmt.Errorf("Could not cache page: %v", err)
}
}
c.Res.Write(content)
return nil
}