/
main.go
255 lines (237 loc) · 5.35 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
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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
package main
import (
"encoding/json"
"errors"
"flag"
"fmt"
"github.com/davecgh/go-spew/spew"
"github.com/rs/zerolog/log"
"github.com/ugorji/go/codec"
"net"
"net/http"
"os"
"os/exec"
"sort"
"strings"
"syscall"
)
var cborHandle codec.CborHandle
var (
username string
password string
oldUrl string
newUrl string
workers int
)
func init() {
flag.StringVar(&username, "username", "onlineconf", "username")
flag.StringVar(&password, "password", "", "password")
flag.StringVar(&oldUrl, "old-url", "", "URL of the old onlineconf-admin")
flag.StringVar(&newUrl, "new-url", "", "URL of the new onlineconf-admin")
flag.IntVar(&workers, "workers", 10, "Total number of workers")
}
type result struct {
ok bool
diff string
}
func main() {
flag.Parse()
jobs := make(chan string, workers)
results := make(chan result, workers)
for i := 0; i < workers; i++ {
go func() {
for s := range jobs {
ok, diff := compareConfig(s)
results <- result{ok, diff}
}
}()
}
servers := flag.Args()
if len(servers) == 0 {
var err error
servers, err = selectServers()
if err != nil {
log.Fatal().Err(err).Msg("failed to fetch servers")
return
}
}
go func() {
for _, s := range servers {
jobs <- s
}
close(jobs)
}()
i := 0
failures := 0
for r := range results {
i++
if !r.ok {
failures++
}
fmt.Print(r.diff)
if i == len(servers) {
break
}
}
fmt.Printf("Total failed: %d\n", failures)
}
type serverStatus struct {
Host string `json:"host"`
MTimeAlert bool `json:"mtime_alert"`
OnlineAlert bool `json:"online_alert"`
}
func selectServers() ([]string, error) {
url := oldUrl + "/monitoring"
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
req.SetBasicAuth(username, password)
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode != 200 {
return nil, errors.New(url + ": " + resp.Status)
}
dec := json.NewDecoder(resp.Body)
var servers []serverStatus
err = dec.Decode(&servers)
if err != nil {
return nil, err
}
active := make([]string, 0, 0)
for _, s := range servers {
if !s.MTimeAlert && !s.OnlineAlert {
active = append(active, s.Host)
}
}
return active, nil
}
func compareConfig(server string) (bool, string) {
old, err := getConfig(oldUrl, server)
if err != nil {
log.Error().Err(err).Str("server", server).Msg("failed to fetch old config")
return false, ""
}
new, err := getConfig(newUrl, server)
if err != nil {
log.Error().Err(err).Str("server", server).Msg("failed to fetch new config")
return false, ""
}
fixOld(old, new)
diff, err := compare(old, new)
if err != nil {
log.Error().Err(err).Str("server", server).Msg("failed to compare")
return false, ""
}
return diff == "", "diff " + server + "\n" + diff
}
type config struct {
Modules []string `json:"modules"`
Nodes []struct {
Path string
ContentType string
Value []uint8
} `json:"nodes"`
}
func getConfig(baseUrl, server string) (*config, error) {
ips, err := net.LookupHost(server)
if err != nil {
return nil, err
}
ip := ips[0]
_ = ip
url := baseUrl + "/client/config"
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
req.SetBasicAuth(username, password)
req.Header.Add("X-Real-IP", ip)
req.Header.Add("X-OnlineConf-Client-Version", "TEST")
req.Header.Add("X-OnlineConf-Client-MTime", "0000-00-00 00:00:00")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode != 200 {
return nil, errors.New(url + ": " + resp.Status)
}
dec := codec.NewDecoder(resp.Body, &cborHandle)
var data config
err = dec.Decode(&data)
if err != nil {
return nil, err
}
sort.Strings(data.Modules)
sort.Slice(data.Nodes, func(i, j int) bool {
return data.Nodes[i].Path < data.Nodes[j].Path
})
return &data, nil
}
func compare(old, new *config) (string, error) {
cfg := spew.Config
cfg.DisablePointerAddresses = true
cfg.DisableCapacities = true
cfg.SortKeys = true
a := cfg.Sdump(old)
b := cfg.Sdump(new)
ar, aw, err := os.Pipe()
if err != nil {
return "", err
}
br, bw, err := os.Pipe()
if err != nil {
return "", err
}
go func() {
_, err := aw.WriteString(a)
if err != nil {
log.Error().Err(err).Msg("failed to write a")
}
aw.Close()
}()
go func() {
_, err := bw.WriteString(b)
if err != nil {
log.Error().Err(err).Msg("failed to write b")
}
bw.Close()
}()
cmd := exec.Command("diff", "-u", "/dev/fd/3", "/dev/fd/4")
cmd.ExtraFiles = []*os.File{ar, br}
out, err := cmd.Output()
if err != nil && err.(*exec.ExitError).Sys().(syscall.WaitStatus).ExitStatus() != 1 {
return "", err
}
return string(out), nil
}
func fixOld(old, new *config) {
hasTree := false
for _, n := range old.Nodes {
if n.Path == "/onlineconf/module/TREE" {
hasTree = true
break
}
}
if hasTree {
nodes := old.Nodes
old.Nodes = nil
for _, n := range nodes {
if strings.HasPrefix(n.Path, "/onlineconf/module/") || n.Path == "/" || n.Path == "/onlineconf" || n.Path == "/onlineconf/module" {
old.Nodes = append(old.Nodes, n)
}
}
}
for i, n := range old.Nodes {
switch n.ContentType {
case "application/x-template":
old.Nodes[i].ContentType = "text/plain"
case "application/x-case":
if len(new.Nodes) > i && old.Nodes[i].Path == new.Nodes[i].Path {
old.Nodes[i].ContentType = new.Nodes[i].ContentType
}
}
}
}