-
Notifications
You must be signed in to change notification settings - Fork 21
/
server.go
202 lines (178 loc) · 4.9 KB
/
server.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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
// Copyright (c) 2016 by António Meireles <antonio.meireles@reformi.st>.
//
// 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 server
import (
"fmt"
"net/http"
"os"
"os/exec"
"os/signal"
"path"
"sync"
"syscall"
"time"
"golang.org/x/net/context"
"github.com/TheNewNormal/corectl/components/host/session"
"github.com/TheNewNormal/corectl/components/target/coreos"
"github.com/TheNewNormal/corectl/release"
"github.com/blang/semver"
"github.com/braintree/manners"
"github.com/coreos/etcd/client"
"github.com/helm/helm/log"
)
type (
// MediaAssets ...
MediaAssets map[string]semver.Versions
// Config ...
ServerContext struct {
sync.Mutex
DataStore client.KeysAPI
Meta *release.Info
Media MediaAssets
Active map[string]*VMInfo
APIserver *manners.GracefulServer
Jobs sync.WaitGroup
}
)
var Daemon *ServerContext
// New ...
func New() (cfg *ServerContext) {
return &ServerContext{
DataStore: nil,
Meta: session.Caller.Meta,
Media: nil,
Active: nil,
APIserver: nil,
Jobs: sync.WaitGroup{},
}
}
// Start server...
func Start() (err error) {
var etcdc client.Client
// var closeVPNhooks func()
if !session.Caller.Privileged {
return fmt.Errorf("not enough previleges to start server. " +
"please use 'sudo'")
}
etcd := exec.Command(path.Join(session.ExecutableFolder(), "corectld.store"),
"-data-dir="+session.Caller.EtcDir(),
"-name=corectld."+coreos.LocalDomainName,
"--listen-client-urls=http://0.0.0.0:2379,http://0.0.0.0:4001",
"--advertise-client-urls=http://0.0.0.0:2379,http://0.0.0.0:4001")
if log.IsDebugging {
etcd.Stdout = os.Stdout
etcd.Stderr = os.Stderr
}
etcdS := client.Config{
Endpoints: []string{"http://127.0.0.1:2379"},
Transport: client.DefaultTransport,
HeaderTimeoutPerRequest: 1 * time.Second,
}
if etcdc, err = client.New(etcdS); err != nil {
return
}
Daemon.DataStore = client.NewKeysAPI(etcdc)
if isPortOpen("tcp", "127.0.0.1:2379") {
return fmt.Errorf("Unable to start embedded etcd, as another one " +
"seems to be already running")
}
log.Info("starting embedded etcd")
if err = etcd.Start(); err != nil {
fmt.Println(err.Error())
return
}
defer func() {
if err = etcd.Process.Signal(syscall.SIGTERM); err != nil {
log.Err(err.Error())
}
}()
select {
case <-time.After(3 * time.Second):
return fmt.Errorf("Unable to establish a meaningfull " +
"conversation with our embedded etcd after 3 seconds...")
case <-time.Tick(250 * time.Millisecond):
if !isPortOpen("tcp", "127.0.0.1:2379") {
break
}
}
log.Info("embedded etcd is ready")
// we don't want skydns' data to persist at all across sessions
Daemon.DataStore.Delete(context.Background(), "/skydns",
&client.DeleteOptions{Dir: true, Recursive: true})
dnsArgs := []string{"-nameservers=8.8.8.8:53,8.8.4.4:53",
"-domain=" + coreos.LocalDomainName,
"-addr=0.0.0.0:53"}
if log.IsDebugging {
dnsArgs = append(dnsArgs, "-verbose")
}
skydns := exec.Command(path.
Join(session.ExecutableFolder(), "corectld.nameserver"),
dnsArgs...,
)
log.Info("starting embedded name server")
if err = skydns.Start(); err != nil {
return
}
// register our host
skyWrite("corectld", session.Caller.Network.Address)
defer func() {
skyWipe("corectld", session.Caller.Network.Address)
if err = skydns.Process.Signal(syscall.SIGTERM); err != nil {
log.Err(err.Error())
}
}()
log.Info("checking nfs host settings")
if err = nfsSetup(); err != nil {
return
}
// log.Info("checking for VPN setups")
// if closeVPNhooks, err = HandleVPNtunnels(); err != nil {
// return
// }
// defer closeVPNhooks()
log.Info("registering locally available images")
if Daemon.Media, err = localImages(); err != nil {
return
}
hades := make(chan os.Signal, 1)
signal.Notify(hades,
os.Interrupt,
syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
go func() {
s := <-hades
log.Info("Got '%v' signal, stopping server...", s)
signal.Stop(hades)
Daemon.Lock()
Daemon.APIserver.Close()
Daemon.Unlock()
}()
log.Info("server starting...")
httpServiceSetup()
rpcServiceSetup()
Daemon.APIserver = manners.NewWithServer(&http.Server{
Addr: ":2511",
Handler: httpServices})
if err = Daemon.APIserver.ListenAndServe(); err != nil {
return
}
Daemon.Lock()
for _, r := range Daemon.Active {
r.halt()
}
Daemon.Unlock()
Daemon.Jobs.Wait()
log.Info("gone!")
return
}