This repository has been archived by the owner on Jun 18, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 8
/
app.go
84 lines (71 loc) · 1.44 KB
/
app.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
79
80
81
82
83
84
package app
import (
"os"
"strconv"
)
type App struct {
Env func(string) (string, bool)
}
func New() (*App, error) {
app := &App{Env: os.LookupEnv}
return app, nil
}
func (a *App) Stage() map[string]string {
sysEnv := map[string]string{
"HOME": "/app",
"LANG": "en_US.UTF-8",
"PATH": "/usr/local/bin:/usr/bin:/bin",
"TMPDIR": "/tmp",
"USER": "heroku",
}
appEnv := map[string]string{
"STACK": "heroku-16",
"DYNO": "local.1",
}
a.envOverride(appEnv)
return mergeMaps(sysEnv, appEnv)
}
func (a *App) Launch() map[string]string {
sysEnv := map[string]string{
"HOME": "/app",
"LANG": "en_US.UTF-8",
"PATH": "/usr/local/bin:/usr/bin:/bin",
"TMPDIR": "/tmp",
"USER": "heroku",
}
appEnv := map[string]string{
"PORT": "5000",
"STACK": "heroku-16",
"DYNO": "local.1",
}
a.envOverride(appEnv)
return mergeMaps(sysEnv, appEnv)
}
func (a *App) envStr(key, val string) string {
if v, ok := a.Env(key); ok {
return v
}
return val
}
func (a *App) envInt(key string, val uint64) uint64 {
if v, ok := a.Env(key); ok {
if vInt, err := strconv.ParseUint(v, 10, 64); err == nil {
return vInt
}
}
return val
}
func (a *App) envOverride(m map[string]string) {
for k, v := range m {
m[k] = a.envStr(k, v)
}
}
func mergeMaps(maps ...map[string]string) map[string]string {
result := make(map[string]string)
for _, m := range maps {
for k, v := range m {
result[k] = v
}
}
return result
}