/
main.go
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/
main.go
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// Copyright 2016 José Santos <henrique_1609@me.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +Build ignore
//go:generate go run assets/generate.go
package main
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"strings"
"time"
"github.com/CloudyKit/jet/v6"
"github.com/CloudyKit/jet/v6/examples/asset_packaging/assets/templates"
"github.com/CloudyKit/jet/v6/loaders/httpfs"
)
var views *jet.Set
func init() {
httpfsLoader, err := httpfs.NewLoader(templates.Assets)
if err != nil {
panic(err)
}
views = jet.NewSet(
httpfsLoader,
jet.InDevelopmentMode(), // remove in production
)
}
var runAndExit = flag.Bool("run-and-exit", false, "Run app, request / and exit (used in tests)")
func main() {
flag.Parse()
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
view, err := views.GetTemplate("index.jet")
if err != nil {
w.WriteHeader(503)
fmt.Fprintf(w, "Unexpected error while parsing template: %+v", err.Error())
return
}
var resp bytes.Buffer
if err = view.Execute(&resp, nil, nil); err != nil {
w.WriteHeader(503)
fmt.Fprintf(w, "Error when executing template: %+v", err.Error())
return
}
w.WriteHeader(200)
w.Write(resp.Bytes())
})
port := os.Getenv("PORT")
if len(port) == 0 {
port = ":9090"
} else if !strings.HasPrefix(":", port) {
port = ":" + port
}
log.Println("Serving on " + port)
if *runAndExit {
go http.ListenAndServe(port, nil)
time.Sleep(1000) // wait for the server to be up
resp, err := http.Get("http://localhost" + port + "/")
if err != nil || resp.StatusCode != 200 {
r, _ := ioutil.ReadAll(resp.Body)
log.Printf("An error occurred when fetching page: %+v\n\nResponse:\n%+v\n\nStatus code: %v\n", err, string(r), resp.StatusCode)
os.Exit(1)
}
os.Exit(0)
}
http.ListenAndServe(port, nil)
}