-
Notifications
You must be signed in to change notification settings - Fork 1
/
main.go
70 lines (62 loc) · 1.73 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
/**
* Copyright 2017 Google Inc.
*
* 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.
*/
// [START all]
package main
import (
"fmt"
"log"
"net/http"
"os"
"time"
)
var Version string
var Buildtime string
func main() {
go func() {
for range time.NewTicker(time.Second).C {
log.Printf("This is a heartbeat..." + time.Now().String())
}
}()
// use PORT environment variable, or default to 8080
port := "8080"
if fromEnv := os.Getenv("PORT"); fromEnv != "" {
port = fromEnv
}
// register hello function to handle all requests
server := http.NewServeMux()
server.HandleFunc("/", hello)
// start the web server on port and accept requests
log.Printf("Server listening on port %s", port)
err := http.ListenAndServe(":"+port, server)
log.Fatal(err)
}
// hello responds to the request with a plain-text "Hello, world" message.
func hello(w http.ResponseWriter, r *http.Request) {
log.Printf("Serving request: %s", r.URL.Path)
w.Header().Add("Content-Type", "text/html")
fmt.Fprintf(w, `
<html>
<head><title>Hello, world!</title></head>
<body><p style="font-size:36px;font-family:monospace">
Hello, world!<br>
Version: %s<br>
Build time: %s<br>
Welcome to Dispatch
</p></body>
</html>
`, Version, Buildtime)
}
// [END all]