forked from coreos/fleet
-
Notifications
You must be signed in to change notification settings - Fork 0
/
config.go
115 lines (102 loc) · 2.58 KB
/
config.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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
// Copyright 2015 CoreOS, 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.
package util
import (
"fmt"
"io"
"io/ioutil"
"os"
"path"
"strings"
"text/template"
)
const (
fleetAPIPort = 54728
cloudConfig = `#cloud-config
write_files:
- path: /opt/fleet/fleet.conf
content: |
verbosity=2
etcd_servers=[{{printf "%q" .EtcdEndpoint}}]
etcd_key_prefix={{.EtcdKeyPrefix}}
public_ip={{.IP}}
ssh_authorized_keys:
- {{printf "%q" .PublicKey}}
coreos:
units:
- name: 00-local.network
content: |
[Match]
Name=host0
[Network]
Address={{.IP}}/16
- name: fleet.socket
command: start
content: |
[Socket]
ListenStream={{printf "%d" .FleetAPIPort}}
- name: fleet.service
command: start
content: |
[Service]
ExecStart=/opt/fleet/fleetd -config /opt/fleet/fleet.conf
`
)
var (
fleetdBinPath string
publicKeyPath string
configTemplate *template.Template
)
type configValues struct {
IP string
PublicKey string
Fleetd string
EtcdEndpoint string
EtcdKeyPrefix string
FleetAPIPort int
}
func init() {
fleetdBinPath = os.Getenv("FLEETD_BIN")
if fleetdBinPath == "" {
fmt.Println("FLEETD_BIN environment variable must be set")
os.Exit(1)
} else if _, err := os.Stat(fleetdBinPath); err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
publicKeyPath = path.Join("fixtures", "id_rsa.pub")
if _, err := os.Stat(publicKeyPath); err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
// sanity check that go's use of tabs didn't leak into the yaml
if strings.ContainsRune(cloudConfig, '\t') {
panic("Aagh, no! Someone got tabs in the YAML!")
}
configTemplate = template.Must(template.New("cc").Parse(cloudConfig))
}
func BuildCloudConfig(dst io.Writer, ip, etcdEndpoint, etcdKeyPrefix string) error {
key, err := ioutil.ReadFile(publicKeyPath)
if err != nil {
return err
}
values := configValues{
IP: ip,
PublicKey: string(key),
EtcdEndpoint: etcdEndpoint,
EtcdKeyPrefix: etcdKeyPrefix,
FleetAPIPort: fleetAPIPort,
}
return configTemplate.Execute(dst, &values)
}