-
Notifications
You must be signed in to change notification settings - Fork 172
/
testutils.go
414 lines (352 loc) · 9.73 KB
/
testutils.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
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
package testutils
import (
"archive/tar"
"bufio"
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/client"
"github.com/docker/docker/pkg/jsonmessage"
"github.com/docker/docker/pkg/term"
)
// StartRegistry starts a new registry container.
func StartRegistry(dcli *client.Client, config, username, password string) (string, string, error) {
_, filename, _, ok := runtime.Caller(0)
if !ok {
return "", "", errors.New("no caller information")
}
image := "registry:2"
if err := pullDockerImage(dcli, image); err != nil {
return "", "", err
}
r, err := dcli.ContainerCreate(
context.Background(),
&container.Config{
Image: image,
},
&container.HostConfig{
NetworkMode: "host",
Binds: []string{
filepath.Join(filepath.Dir(filename), "configs", config) + ":" + "/etc/docker/registry/config.yml" + ":ro",
filepath.Join(filepath.Dir(filename), "configs", "htpasswd") + ":" + "/etc/docker/registry/htpasswd" + ":ro",
filepath.Join(filepath.Dir(filename), "snakeoil") + ":" + "/etc/docker/registry/ssl" + ":ro",
},
RestartPolicy: container.RestartPolicy{
Name: "always",
},
},
nil, "")
if err != nil {
return "", "", err
}
// start the container
if err := dcli.ContainerStart(context.Background(), r.ID, types.ContainerStartOptions{}); err != nil {
return r.ID, "", err
}
port := ":5000"
addr := "https://localhost" + port
if err := waitForConn(addr, filepath.Join(filepath.Dir(filename), "snakeoil", "cert.pem"), filepath.Join(filepath.Dir(filename), "snakeoil", "key.pem")); err != nil {
return r.ID, addr, err
}
if err := dockerLogin("localhost"+port, username, password); err != nil {
return r.ID, addr, err
}
// Prefill the images.
images := []string{"alpine:3.5", "alpine:latest", "busybox:latest", "busybox:musl", "busybox:glibc"}
for _, image := range images {
if err := prefillRegistry(image, dcli, "localhost"+port, username, password); err != nil {
return r.ID, addr, err
}
}
return r.ID, addr, nil
}
func startClairDB(dcli *client.Client) (string, error) {
image := "postgres:latest"
if err := pullDockerImage(dcli, image); err != nil {
return "", err
}
c, err := dcli.ContainerCreate(
context.Background(),
&container.Config{
Image: image,
Env: []string{
"POSTGRES_PASSWORD=password",
"POSTGRES_DB=clair",
"POSTGRES_USER=hacker",
},
},
&container.HostConfig{
NetworkMode: "host",
RestartPolicy: container.RestartPolicy{
Name: "always",
},
},
nil, "")
if err != nil {
return "", err
}
// start the container
return c.ID, dcli.ContainerStart(context.Background(), c.ID, types.ContainerStartOptions{})
}
// StartClair starts a new clair container and accompanying database.
func StartClair(dcli *client.Client) (string, string, error) {
_, filename, _, ok := runtime.Caller(0)
if !ok {
return "", "", errors.New("no caller information")
}
// start the database container.
dbID, err := startClairDB(dcli)
if err != nil {
return dbID, "", err
}
image := "clair:dev"
// build the docker image
// create the tar ball
ctx := filepath.Dir(filepath.Dir(filename))
tw, err := tarit(ctx)
if err != nil {
return dbID, "", fmt.Errorf("tarit: %v", err)
}
// build the image
resp, err := dcli.ImageBuild(context.Background(), tw, types.ImageBuildOptions{
Tags: []string{image},
Dockerfile: "Dockerfile.clair",
ForceRemove: true,
Remove: true,
SuppressOutput: false,
PullParent: true,
})
if err != nil {
return dbID, "", err
}
defer resp.Body.Close()
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return dbID, "", err
}
fmt.Printf("body: %s\n", string(b))
c, err := dcli.ContainerCreate(
context.Background(),
&container.Config{
Image: image,
},
&container.HostConfig{
NetworkMode: "host",
Binds: []string{
filepath.Join(filepath.Dir(filename), "configs", "clair.yml") + ":" + "/etc/clair/config.yaml" + ":ro",
},
RestartPolicy: container.RestartPolicy{
Name: "always",
},
},
nil, "")
if err != nil {
return dbID, c.ID, err
}
// start the container
err = dcli.ContainerStart(context.Background(), c.ID, types.ContainerStartOptions{})
// wait for clair to start
// TODO: make this not a sleep
time.Sleep(time.Second * 5)
return dbID, c.ID, err
}
// RemoveContainer removes with force a container by it's container ID.
func RemoveContainer(dcli *client.Client, ctrs ...string) (err error) {
for _, c := range ctrs {
err = dcli.ContainerRemove(context.Background(), c,
types.ContainerRemoveOptions{
RemoveVolumes: true,
Force: true,
})
}
return err
}
// dockerLogin logins via the command line to a docker registry
func dockerLogin(addr, username, password string) error {
cmd := exec.Command("docker", "login", "--username", username, "--password", password, addr)
out, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("docker login [%s] failed with output %q and error: %v", strings.Join(cmd.Args, " "), string(out), err)
}
return nil
}
// prefillRegistry adds images to a registry.
func prefillRegistry(image string, dcli *client.Client, addr, username, password string) error {
if err := pullDockerImage(dcli, image); err != nil {
return err
}
if err := dcli.ImageTag(context.Background(), image, addr+"/"+image); err != nil {
return err
}
auth, err := constructRegistryAuth(username, password)
if err != nil {
return err
}
resp, err := dcli.ImagePush(context.Background(), addr+"/"+image, types.ImagePushOptions{
RegistryAuth: auth,
})
if err != nil {
return err
}
defer resp.Close()
fd, isTerm := term.GetFdInfo(os.Stdout)
return jsonmessage.DisplayJSONMessagesStream(resp, os.Stdout, fd, isTerm, nil)
}
func pullDockerImage(dcli *client.Client, image string) error {
exists, err := imageExists(dcli, image)
if err != nil {
return err
}
if exists {
return nil
}
resp, err := dcli.ImagePull(context.Background(), image, types.ImagePullOptions{})
if err != nil {
return err
}
defer resp.Close()
fd, isTerm := term.GetFdInfo(os.Stdout)
return jsonmessage.DisplayJSONMessagesStream(resp, os.Stdout, fd, isTerm, nil)
}
func imageExists(dcli *client.Client, image string) (bool, error) {
_, _, err := dcli.ImageInspectWithRaw(context.Background(), image)
if err == nil {
return true, nil
}
if client.IsErrNotFound(err) {
return false, nil
}
return false, err
}
// waitForConn takes a tcp addr and waits until it is reachable
func waitForConn(addr, cert, key string) error {
tlsCert, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
return fmt.Errorf("could not load X509 key pair: %v. Make sure the key is not encrypted", err)
}
certPool, err := x509.SystemCertPool()
if err != nil {
return fmt.Errorf("failed to read system certificates: %v", err)
}
pem, err := ioutil.ReadFile(cert)
if err != nil {
return fmt.Errorf("could not read CA certificate %s: %v", cert, err)
}
if !certPool.AppendCertsFromPEM(pem) {
return fmt.Errorf("failed to append certificates from PEM file: %s", cert)
}
c := http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
TLSClientConfig: &tls.Config{
Certificates: []tls.Certificate{tlsCert},
MinVersion: tls.VersionTLS12,
CipherSuites: []uint16{
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
},
RootCAs: certPool,
},
},
}
n := 0
max := 10
for n < max {
if _, err := c.Get(addr + "/v2/"); err != nil {
fmt.Printf("try number %d to %s: %v\n", n, addr, err)
n++
if n != max {
fmt.Println("sleeping for 1 second then will try again...")
time.Sleep(time.Second)
} else {
return fmt.Errorf("[WHOOPS]: maximum retries for %s exceeded", addr)
}
continue
} else {
break
}
}
return nil
}
// constructRegistryAuth serializes the auth configuration as JSON base64 payload.
func constructRegistryAuth(identity, secret string) (string, error) {
buf, err := json.Marshal(types.AuthConfig{Username: identity, Password: secret})
if err != nil {
return "", err
}
return base64.URLEncoding.EncodeToString(buf), nil
}
func tarit(src string) (io.Reader, error) {
s := bytes.NewBuffer(nil)
t := bytes.NewBuffer(nil)
buf := bufio.NewReadWriter(bufio.NewReader(s), bufio.NewWriter(t))
tarball := tar.NewWriter(s)
err := filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
var link string
if info.Mode()&os.ModeSymlink == os.ModeSymlink {
if link, err = os.Readlink(path); err != nil {
return err
}
}
header, err := tar.FileInfoHeader(info, link)
if err != nil {
return err
}
header.Name = strings.TrimPrefix(path, src)
if err := tarball.WriteHeader(header); err != nil {
return err
}
if info.IsDir() {
return nil
}
if !info.Mode().IsRegular() { //nothing more to do for non-regular
return nil
}
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
_, err = io.Copy(tarball, file)
return err
})
if err != nil {
return nil, err
}
if _, err := s.WriteTo(buf); err != nil {
return nil, err
}
err = buf.Writer.Flush()
return t, err
}