mirror of
https://github.com/ClusterCockpit/cc-backend
synced 2024-09-20 11:27:26 +02:00
96 lines
3.2 KiB
Go
96 lines
3.2 KiB
Go
// Copyright (C) 2022 NHR@FAU, University Erlangen-Nuremberg.
|
|
// All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
package web
|
|
|
|
import (
|
|
"embed"
|
|
"html/template"
|
|
"io/fs"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/ClusterCockpit/cc-backend/internal/auth"
|
|
"github.com/ClusterCockpit/cc-backend/internal/config"
|
|
"github.com/ClusterCockpit/cc-backend/pkg/log"
|
|
"github.com/ClusterCockpit/cc-backend/pkg/schema"
|
|
)
|
|
|
|
/// Go's embed is only allowed to embed files in a subdirectory of the embedding package ([see here](https://github.com/golang/go/issues/46056)).
|
|
|
|
//go:embed frontend/public/*
|
|
var frontendFiles embed.FS
|
|
|
|
func ServeFiles() http.Handler {
|
|
publicFiles, err := fs.Sub(frontendFiles, "frontend/public")
|
|
if err != nil {
|
|
log.Fatalf("WEB/WEB > cannot find frontend public files")
|
|
panic(err)
|
|
}
|
|
return http.FileServer(http.FS(publicFiles))
|
|
}
|
|
|
|
//go:embed templates/*
|
|
var templateFiles embed.FS
|
|
|
|
var templates map[string]*template.Template = map[string]*template.Template{}
|
|
|
|
func init() {
|
|
base := template.Must(template.ParseFS(templateFiles, "templates/base.tmpl"))
|
|
if err := fs.WalkDir(templateFiles, "templates", func(path string, d fs.DirEntry, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if d.IsDir() || path == "templates/base.tmpl" {
|
|
return nil
|
|
}
|
|
|
|
templates[strings.TrimPrefix(path, "templates/")] = template.Must(template.Must(base.Clone()).ParseFS(templateFiles, path))
|
|
return nil
|
|
}); err != nil {
|
|
log.Fatalf("WEB/WEB > cannot find frontend template files")
|
|
panic(err)
|
|
}
|
|
|
|
_ = base
|
|
}
|
|
|
|
type Build struct {
|
|
Version string
|
|
Hash string
|
|
Buildtime string
|
|
}
|
|
|
|
type Page struct {
|
|
Title string // Page title
|
|
Error string // For generic use (e.g. the exact error message on /login)
|
|
Info string // For generic use (e.g. "Logout successfull" on /login)
|
|
User auth.User // Information about the currently logged in user (Full User Info)
|
|
Roles map[string]auth.Role // Available roles for frontend render checks
|
|
Build Build // Latest information about the application
|
|
Clusters []schema.ClusterConfig // List of all clusters for use in the Header
|
|
FilterPresets map[string]interface{} // For pages with the Filter component, this can be used to set initial filters.
|
|
Infos map[string]interface{} // For generic use (e.g. username for /monitoring/user/<id>, job id for /monitoring/job/<id>)
|
|
Config map[string]interface{} // UI settings for the currently logged in user (e.g. line width, ...)
|
|
}
|
|
|
|
func RenderTemplate(rw http.ResponseWriter, r *http.Request, file string, page *Page) {
|
|
t, ok := templates[file]
|
|
if !ok {
|
|
log.Fatalf("WEB/WEB > template '%s' not found", file)
|
|
panic("template not found")
|
|
}
|
|
|
|
if page.Clusters == nil {
|
|
for _, c := range config.Keys.Clusters {
|
|
page.Clusters = append(page.Clusters, schema.ClusterConfig{Name: c.Name, FilterRanges: c.FilterRanges, MetricDataRepository: nil})
|
|
}
|
|
}
|
|
|
|
log.Infof("Page config : %v\n", page.Config)
|
|
if err := t.Execute(rw, page); err != nil {
|
|
log.Errorf("Template error: %s", err.Error())
|
|
}
|
|
}
|