all: delay template loading to server boot time

Author: changkun

handler.go

@@ -7,6 +7,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"html/template"
 	"log"
 	"net/http"
 )
@@ -21,7 +22,15 @@ type server struct {
 	visitCh chan visit
 }
 
+var (
+	xTmpl     *template.Template
+	statsTmpl *template.Template
+)
+
 func newServer(ctx context.Context) *server {
+	xTmpl = template.Must(template.ParseFiles("public/x.html"))
+	statsTmpl = template.Must(template.ParseFiles("public/stats.html"))
+
 	db, err := newStore(conf.Store)
 	if err != nil {
 		log.Fatalf("cannot establish connection to database, err: %v", err)

short.go

@@ -10,7 +10,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"html/template"
 	"log"
 	"net"
 	"net/http"
@@ -25,9 +24,9 @@ type op string
 const (
 	// opCreate represents a create operation for short link
 	opCreate op = "create"
-	// opDelete represents a create operation for short link
+	// opDelete represents a delete operation for short link
 	opDelete = "delete"
-	// opUpdate represents a create operation for short link
+	// opUpdate represents a update operation for short link
 	opUpdate = "update"
 	// opFetch represents a fetch operation for short link
 	opFetch = "fetch"
@@ -149,8 +148,6 @@ func (s *server) readIP(r *http.Request) string {
 	return ip
 }
 
-var statsTmpl = template.Must(template.ParseFiles("public/stats.html"))
-
 type arecords struct {
 	Records []arecord
 }

x.go

@@ -7,13 +7,10 @@ package main
 import (
 	"bytes"
 	"fmt"
-	"html/template"
 	"net/http"
 	"strings"
 )
 
-var xTmpl = template.Must(template.ParseFiles("public/x.html"))
-
 type x struct {
 	ImportRoot string
 	VCS        string