This repository has been archived by the owner on Nov 28, 2019. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
78 lines (64 loc) · 1.48 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
71
72
73
74
75
76
77
78
package main
import (
"database/sql"
"fmt"
_ "github.com/go-sql-driver/mysql"
"io"
"net/http"
)
var db *sql.DB
func main() {
var err error
db, err = sql.Open("mysql", "awsuser:mypassword@tcp(mydbinstance.cakwl95bxza0.us-west-1.rds.amazonaws.com:3306)/test02?charset=utf8")
check(err)
defer db.Close()
err = db.Ping()
check(err)
http.HandleFunc("/", index)
http.HandleFunc("/ping", ping)
http.HandleFunc("/instance", instance)
http.Handle("/favicon.ico", http.NotFoundHandler())
http.HandleFunc("/amigos", amigos)
http.ListenAndServe(":80", nil)
}
func index(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, "Hello from AWS.")
}
func ping(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, "OK")
}
func instance(w http.ResponseWriter, req *http.Request) {
s := getInstance()
io.WriteString(w, s)
}
func amigos(w http.ResponseWriter, req *http.Request) {
rows, err := db.Query(`SELECT aName FROM amigos;`)
check(err)
// data to be used in query
s := getInstance()
s += "\nRETRIEVED RECORDS:\n"
var name string
// query
for rows.Next() {
err = rows.Scan(&name)
check(err)
s += name + "\n"
}
fmt.Fprintln(w, s)
}
func check(err error) {
if err != nil {
fmt.Println(err)
}
}
func getInstance() string {
resp, err := http.Get("http://169.254.169.254/latest/meta-data/instance-id")
if err != nil {
fmt.Println(err)
return err.Error()
}
bs := make([]byte, resp.ContentLength)
resp.Body.Read(bs)
resp.Body.Close()
return string(bs)
}