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embed templates into binary (issue #2)

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This commit is contained in:
Lou Knauer 2022-07-06 15:00:08 +02:00
parent 4f61580b2b
commit 94017dc040
3 changed files with 10 additions and 91 deletions
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13
cmd/cc-backend/main.go
View File

@ -31,7 +31,6 @@ import (
"github.com/ClusterCockpit/cc-backend/internal/repository"
"github.com/ClusterCockpit/cc-backend/internal/routerConfig"
"github.com/ClusterCockpit/cc-backend/internal/runtimeEnv"
"github.com/ClusterCockpit/cc-backend/internal/templates"
"github.com/ClusterCockpit/cc-backend/pkg/log"
"github.com/ClusterCockpit/cc-backend/web"
"github.com/google/gops/agent"
@ -297,15 +296,15 @@ func main() {
r.HandleFunc("/login", func(rw http.ResponseWriter, r *http.Request) {
rw.Header().Add("Content-Type", "text/html; charset=utf-8")
templates.Render(rw, r, "login.tmpl", &templates.Page{Title: "Login"})
web.RenderTemplate(rw, r, "login.tmpl", &web.Page{Title: "Login"})
}).Methods(http.MethodGet)
r.HandleFunc("/imprint", func(rw http.ResponseWriter, r *http.Request) {
rw.Header().Add("Content-Type", "text/html; charset=utf-8")
templates.Render(rw, r, "imprint.tmpl", &templates.Page{Title: "Imprint"})
web.RenderTemplate(rw, r, "imprint.tmpl", &web.Page{Title: "Imprint"})
})
r.HandleFunc("/privacy", func(rw http.ResponseWriter, r *http.Request) {
rw.Header().Add("Content-Type", "text/html; charset=utf-8")
templates.Render(rw, r, "privacy.tmpl", &templates.Page{Title: "Privacy"})
web.RenderTemplate(rw, r, "privacy.tmpl", &web.Page{Title: "Privacy"})
})
// Some routes, such as /login or /query, should only be accessible to a user that is logged in.
@ -321,7 +320,7 @@ func main() {
func(rw http.ResponseWriter, r *http.Request, err error) {
rw.Header().Add("Content-Type", "text/html; charset=utf-8")
rw.WriteHeader(http.StatusUnauthorized)
templates.Render(rw, r, "login.tmpl", &templates.Page{
web.RenderTemplate(rw, r, "login.tmpl", &web.Page{
Title: "Login failed - ClusterCockpit",
Error: err.Error(),
})
@ -330,7 +329,7 @@ func main() {
r.Handle("/logout", authentication.Logout(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
rw.Header().Add("Content-Type", "text/html; charset=utf-8")
rw.WriteHeader(http.StatusOK)
templates.Render(rw, r, "login.tmpl", &templates.Page{
web.RenderTemplate(rw, r, "login.tmpl", &web.Page{
Title: "Bye - ClusterCockpit",
Info: "Logout sucessful",
})
@ -344,7 +343,7 @@ func main() {
// On failure:
func(rw http.ResponseWriter, r *http.Request, err error) {
rw.WriteHeader(http.StatusUnauthorized)
templates.Render(rw, r, "login.tmpl", &templates.Page{
web.RenderTemplate(rw, r, "login.tmpl", &web.Page{
Title: "Authentication failed - ClusterCockpit",
Error: err.Error(),
})

8
internal/routerConfig/routes.go
View File

@ -13,9 +13,9 @@ import (
"github.com/ClusterCockpit/cc-backend/internal/graph"
"github.com/ClusterCockpit/cc-backend/internal/graph/model"
"github.com/ClusterCockpit/cc-backend/internal/repository"
"github.com/ClusterCockpit/cc-backend/internal/templates"
"github.com/ClusterCockpit/cc-backend/pkg/log"
"github.com/ClusterCockpit/cc-backend/pkg/schema"
"github.com/ClusterCockpit/cc-backend/web"
"github.com/gorilla/mux"
)
@ -271,9 +271,9 @@ func SetupRoutes(router *mux.Router) {
isAdmin = user.HasRole(auth.RoleAdmin)
}
page := templates.Page{
page := web.Page{
Title: title,
User: templates.User{Username: username, IsAdmin: isAdmin},
User: web.User{Username: username, IsAdmin: isAdmin},
Config: conf,
Infos: infos,
}
@ -282,7 +282,7 @@ func SetupRoutes(router *mux.Router) {
page.FilterPresets = buildFilterPresets(r.URL.Query())
}
templates.Render(rw, r, route.Template, &page)
web.RenderTemplate(rw, r, route.Template, &page)
})
}
}

80
internal/templates/templates.go
View File

@ -1,80 +0,0 @@
package templates
import (
"html/template"
"net/http"
"os"
"github.com/ClusterCockpit/cc-backend/internal/config"
"github.com/ClusterCockpit/cc-backend/pkg/log"
)
var templatesDir string
var debugMode bool = os.Getenv("DEBUG") == "1"
var templates map[string]*template.Template = map[string]*template.Template{}
type User struct {
Username string // Username of the currently logged in user
IsAdmin bool
}
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 User // Information about the currently logged in user
Clusters []string // 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 init() {
bp := "./"
ebp := os.Getenv("BASEPATH")
if ebp != "" {
bp = ebp
}
templatesDir = bp + "web/templates/"
base := template.Must(template.ParseFiles(templatesDir + "base.tmpl"))
files := []string{
"home.tmpl", "404.tmpl", "login.tmpl",
"imprint.tmpl", "privacy.tmpl",
"config.tmpl",
"monitoring/jobs.tmpl",
"monitoring/job.tmpl",
"monitoring/taglist.tmpl",
"monitoring/list.tmpl",
"monitoring/user.tmpl",
"monitoring/systems.tmpl",
"monitoring/status.tmpl",
"monitoring/node.tmpl",
"monitoring/analysis.tmpl",
}
for _, file := range files {
templates[file] = template.Must(template.Must(base.Clone()).ParseFiles(templatesDir + file))
}
}
func Render(rw http.ResponseWriter, r *http.Request, file string, page *Page) {
t, ok := templates[file]
if !ok {
panic("templates must be predefinied!")
}
if debugMode {
t = template.Must(template.ParseFiles(templatesDir+"base.tmpl", templatesDir+file))
}
if page.Clusters == nil {
for _, c := range config.Clusters {
page.Clusters = append(page.Clusters, c.Name)
}
}
if err := t.Execute(rw, page); err != nil {
log.Errorf("template error: %s", err.Error())
}
}