summaryrefslogtreecommitdiff
path: root/pkg/api/handlers/compat/images_build.go
blob: e06f93b89bf893abd23c0477d1c97f11b6e1d1b6 (plain)
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
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
package compat

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"os"
	"path/filepath"
	"strconv"
	"time"

	"github.com/containers/buildah"
	"github.com/containers/buildah/imagebuildah"
	"github.com/containers/buildah/util"
	"github.com/containers/image/v5/types"
	"github.com/containers/podman/v3/libpod"
	"github.com/containers/podman/v3/pkg/api/handlers/utils"
	"github.com/containers/podman/v3/pkg/auth"
	"github.com/containers/podman/v3/pkg/channel"
	"github.com/containers/storage/pkg/archive"
	"github.com/gorilla/schema"
	specs "github.com/opencontainers/runtime-spec/specs-go"
	"github.com/pkg/errors"
	"github.com/sirupsen/logrus"
)

func BuildImage(w http.ResponseWriter, r *http.Request) {
	if hdr, found := r.Header["Content-Type"]; found && len(hdr) > 0 {
		contentType := hdr[0]
		switch contentType {
		case "application/tar":
			logrus.Warnf("tar file content type is  %s, should use \"application/x-tar\" content type", contentType)
		case "application/x-tar":
			break
		default:
			utils.BadRequest(w, "Content-Type", hdr[0],
				fmt.Errorf("Content-Type: %s is not supported. Should be \"application/x-tar\"", hdr[0]))
			return
		}
	}

	contextDirectory, err := extractTarFile(r)
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}

	defer func() {
		if logrus.IsLevelEnabled(logrus.DebugLevel) {
			if v, found := os.LookupEnv("PODMAN_RETAIN_BUILD_ARTIFACT"); found {
				if keep, _ := strconv.ParseBool(v); keep {
					return
				}
			}
		}
		err := os.RemoveAll(filepath.Dir(contextDirectory))
		if err != nil {
			logrus.Warn(errors.Wrapf(err, "failed to remove build scratch directory %q", filepath.Dir(contextDirectory)))
		}
	}()

	query := struct {
		AddHosts               string `schema:"extrahosts"`
		AdditionalCapabilities string `schema:"addcaps"`
		Annotations            string `schema:"annotations"`
		BuildArgs              string `schema:"buildargs"`
		CacheFrom              string `schema:"cachefrom"`
		Compression            uint64 `schema:"compression"`
		ConfigureNetwork       int64  `schema:"networkmode"`
		CpuPeriod              uint64 `schema:"cpuperiod"`  // nolint
		CpuQuota               int64  `schema:"cpuquota"`   // nolint
		CpuSetCpus             string `schema:"cpusetcpus"` // nolint
		CpuShares              uint64 `schema:"cpushares"`  // nolint
		Devices                string `schema:"devices"`
		Dockerfile             string `schema:"dockerfile"`
		DropCapabilities       string `schema:"dropcaps"`
		Excludes               string `schema:"excludes"`
		ForceRm                bool   `schema:"forcerm"`
		From                   string `schema:"from"`
		HTTPProxy              bool   `schema:"httpproxy"`
		Isolation              int64  `schema:"isolation"`
		Ignore                 bool   `schema:"ignore"`
		Jobs                   int    `schema:"jobs"` // nolint
		Labels                 string `schema:"labels"`
		Layers                 bool   `schema:"layers"`
		LogRusage              bool   `schema:"rusage"`
		Manifest               string `schema:"manifest"`
		MemSwap                int64  `schema:"memswap"`
		Memory                 int64  `schema:"memory"`
		NamespaceOptions       string `schema:"nsoptions"`
		NoCache                bool   `schema:"nocache"`
		OutputFormat           string `schema:"outputformat"`
		Platform               string `schema:"platform"`
		Pull                   bool   `schema:"pull"`
		Quiet                  bool   `schema:"q"`
		Registry               string `schema:"registry"`
		Rm                     bool   `schema:"rm"`
		//FIXME SecurityOpt in remote API is not handled
		SecurityOpt string   `schema:"securityopt"`
		ShmSize     int      `schema:"shmsize"`
		Squash      bool     `schema:"squash"`
		Tag         []string `schema:"t"`
		Target      string   `schema:"target"`
		Timestamp   int64    `schema:"timestamp"`
	}{
		Dockerfile: "Dockerfile",
		Registry:   "docker.io",
		Rm:         true,
		ShmSize:    64 * 1024 * 1024,
		Tag:        []string{},
	}

	decoder := r.Context().Value("decoder").(*schema.Decoder)
	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
		return
	}

	// convert label formats
	var addCaps = []string{}
	if _, found := r.URL.Query()["addcaps"]; found {
		var m = []string{}
		if err := json.Unmarshal([]byte(query.AdditionalCapabilities), &m); err != nil {
			utils.BadRequest(w, "addcaps", query.AdditionalCapabilities, err)
			return
		}
		addCaps = m
	}
	addhosts := []string{}
	if _, found := r.URL.Query()["extrahosts"]; found {
		if err := json.Unmarshal([]byte(query.AddHosts), &addhosts); err != nil {
			utils.BadRequest(w, "extrahosts", query.AddHosts, err)
			return
		}
	}

	compression := archive.Compression(query.Compression)
	// convert label formats
	var dropCaps = []string{}
	if _, found := r.URL.Query()["dropcaps"]; found {
		var m = []string{}
		if err := json.Unmarshal([]byte(query.DropCapabilities), &m); err != nil {
			utils.BadRequest(w, "dropcaps", query.DropCapabilities, err)
			return
		}
		dropCaps = m
	}

	// convert label formats
	var devices = []string{}
	if _, found := r.URL.Query()["devices"]; found {
		var m = []string{}
		if err := json.Unmarshal([]byte(query.DropCapabilities), &m); err != nil {
			utils.BadRequest(w, "devices", query.DropCapabilities, err)
			return
		}
		devices = m
	}

	var output string
	if len(query.Tag) > 0 {
		output = query.Tag[0]
	}
	format := buildah.Dockerv2ImageManifest
	registry := query.Registry
	isolation := buildah.IsolationChroot
	/*
		// FIXME, This is very broken.  Buildah will only work with chroot
		isolation := buildah.IsolationDefault
	*/
	if utils.IsLibpodRequest(r) {
		//		isolation = buildah.Isolation(query.Isolation)
		registry = ""
		format = query.OutputFormat
	}
	var additionalTags []string
	if len(query.Tag) > 1 {
		additionalTags = query.Tag[1:]
	}

	var buildArgs = map[string]string{}
	if _, found := r.URL.Query()["buildargs"]; found {
		if err := json.Unmarshal([]byte(query.BuildArgs), &buildArgs); err != nil {
			utils.BadRequest(w, "buildargs", query.BuildArgs, err)
			return
		}
	}

	var excludes = []string{}
	if _, found := r.URL.Query()["excludes"]; found {
		if err := json.Unmarshal([]byte(query.Excludes), &excludes); err != nil {
			utils.BadRequest(w, "excludes", query.Excludes, err)
			return
		}
	}

	// convert label formats
	var annotations = []string{}
	if _, found := r.URL.Query()["annotations"]; found {
		if err := json.Unmarshal([]byte(query.Annotations), &annotations); err != nil {
			utils.BadRequest(w, "annotations", query.Annotations, err)
			return
		}
	}

	// convert label formats
	nsoptions := buildah.NamespaceOptions{}
	if _, found := r.URL.Query()["nsoptions"]; found {
		if err := json.Unmarshal([]byte(query.NamespaceOptions), &nsoptions); err != nil {
			utils.BadRequest(w, "nsoptions", query.NamespaceOptions, err)
			return
		}
	} else {
		nsoptions = append(nsoptions, buildah.NamespaceOption{
			Name: string(specs.NetworkNamespace),
			Host: true,
		})
	}
	// convert label formats
	var labels = []string{}
	if _, found := r.URL.Query()["labels"]; found {
		makeLabels := make(map[string]string)
		err := json.Unmarshal([]byte(query.Labels), &makeLabels)
		if err == nil {
			for k, v := range makeLabels {
				labels = append(labels, k+"="+v)
			}
		} else {
			if err := json.Unmarshal([]byte(query.Labels), &labels); err != nil {
				utils.BadRequest(w, "labels", query.Labels, err)
				return
			}
		}
	}
	jobs := 1
	if _, found := r.URL.Query()["jobs"]; found {
		jobs = query.Jobs
	}

	pullPolicy := buildah.PullIfMissing
	if _, found := r.URL.Query()["pull"]; found {
		if query.Pull {
			pullPolicy = buildah.PullAlways
		}
	}

	creds, authfile, key, err := auth.GetCredentials(r)
	if err != nil {
		// Credential value(s) not returned as their value is not human readable
		utils.BadRequest(w, key.String(), "n/a", err)
		return
	}
	defer auth.RemoveAuthfile(authfile)

	// Channels all mux'ed in select{} below to follow API build protocol
	stdout := channel.NewWriter(make(chan []byte, 1))
	defer stdout.Close()

	auxout := channel.NewWriter(make(chan []byte, 1))
	defer auxout.Close()

	stderr := channel.NewWriter(make(chan []byte, 1))
	defer stderr.Close()

	reporter := channel.NewWriter(make(chan []byte, 1))
	defer reporter.Close()

	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	rtc, err := runtime.GetConfig()
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Decode()"))
		return
	}
	buildOptions := imagebuildah.BuildOptions{
		AddCapabilities: addCaps,
		AdditionalTags:  additionalTags,
		Annotations:     annotations,
		Args:            buildArgs,
		CommonBuildOpts: &buildah.CommonBuildOptions{
			AddHost:    addhosts,
			CPUPeriod:  query.CpuPeriod,
			CPUQuota:   query.CpuQuota,
			CPUShares:  query.CpuShares,
			CPUSetCPUs: query.CpuSetCpus,
			HTTPProxy:  query.HTTPProxy,
			Memory:     query.Memory,
			MemorySwap: query.MemSwap,
			ShmSize:    strconv.Itoa(query.ShmSize),
		},
		CNIConfigDir:                   rtc.Network.CNIPluginDirs[0],
		CNIPluginPath:                  util.DefaultCNIPluginPath,
		Compression:                    compression,
		ConfigureNetwork:               buildah.NetworkConfigurationPolicy(query.ConfigureNetwork),
		ContextDirectory:               contextDirectory,
		Devices:                        devices,
		DropCapabilities:               dropCaps,
		Err:                            auxout,
		Excludes:                       excludes,
		ForceRmIntermediateCtrs:        query.ForceRm,
		From:                           query.From,
		IgnoreUnrecognizedInstructions: query.Ignore,
		Isolation:                      isolation,
		Jobs:                           &jobs,
		Labels:                         labels,
		Layers:                         query.Layers,
		Manifest:                       query.Manifest,
		MaxPullPushRetries:             3,
		NamespaceOptions:               nsoptions,
		NoCache:                        query.NoCache,
		Out:                            stdout,
		Output:                         output,
		OutputFormat:                   format,
		PullPolicy:                     pullPolicy,
		PullPushRetryDelay:             time.Duration(2 * time.Second),
		Quiet:                          query.Quiet,
		Registry:                       registry,
		RemoveIntermediateCtrs:         query.Rm,
		ReportWriter:                   reporter,
		Squash:                         query.Squash,
		SystemContext: &types.SystemContext{
			AuthFilePath:     authfile,
			DockerAuthConfig: creds,
		},
		Target: query.Target,
	}

	if _, found := r.URL.Query()["timestamp"]; found {
		ts := time.Unix(query.Timestamp, 0)
		buildOptions.Timestamp = &ts
	}

	runCtx, cancel := context.WithCancel(context.Background())
	var imageID string
	go func() {
		defer cancel()
		imageID, _, err = runtime.Build(r.Context(), buildOptions, query.Dockerfile)
		if err != nil {
			stderr.Write([]byte(err.Error() + "\n"))
		}
	}()

	flush := func() {
		if flusher, ok := w.(http.Flusher); ok {
			flusher.Flush()
		}
	}

	// Send headers and prime client for stream to come
	w.WriteHeader(http.StatusOK)
	w.Header().Add("Content-Type", "application/json")
	flush()

	var failed bool

	body := w.(io.Writer)
	if logrus.IsLevelEnabled(logrus.DebugLevel) {
		if v, found := os.LookupEnv("PODMAN_RETAIN_BUILD_ARTIFACT"); found {
			if keep, _ := strconv.ParseBool(v); keep {
				t, _ := ioutil.TempFile("", "build_*_server")
				defer t.Close()
				body = io.MultiWriter(t, w)
			}
		}
	}

	enc := json.NewEncoder(body)
	enc.SetEscapeHTML(true)
loop:
	for {
		m := struct {
			Stream string `json:"stream,omitempty"`
			Error  string `json:"error,omitempty"`
		}{}

		select {
		case e := <-stdout.Chan():
			m.Stream = string(e)
			if err := enc.Encode(m); err != nil {
				stderr.Write([]byte(err.Error()))
			}
			flush()
		case e := <-auxout.Chan():
			m.Stream = string(e)
			if err := enc.Encode(m); err != nil {
				stderr.Write([]byte(err.Error()))
			}
			flush()
		case e := <-reporter.Chan():
			m.Stream = string(e)
			if err := enc.Encode(m); err != nil {
				stderr.Write([]byte(err.Error()))
			}
			flush()
		case e := <-stderr.Chan():
			failed = true
			m.Error = string(e)
			if err := enc.Encode(m); err != nil {
				logrus.Warnf("Failed to json encode error %v", err)
			}
			flush()
		case <-runCtx.Done():
			if !failed {
				if !utils.IsLibpodRequest(r) {
					m.Stream = fmt.Sprintf("Successfully built %12.12s\n", imageID)
					if err := enc.Encode(m); err != nil {
						logrus.Warnf("Failed to json encode error %v", err)
					}
					flush()
				}
			}
			break loop
		}
	}
}

func extractTarFile(r *http.Request) (string, error) {
	// build a home for the request body
	anchorDir, err := ioutil.TempDir("", "libpod_builder")
	if err != nil {
		return "", err
	}

	path := filepath.Join(anchorDir, "tarBall")
	tarBall, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
	if err != nil {
		return "", err
	}
	defer tarBall.Close()

	// Content-Length not used as too many existing API clients didn't honor it
	_, err = io.Copy(tarBall, r.Body)
	r.Body.Close()
	if err != nil {
		return "", fmt.Errorf("failed Request: Unable to copy tar file from request body %s", r.RequestURI)
	}

	buildDir := filepath.Join(anchorDir, "build")
	err = os.Mkdir(buildDir, 0700)
	if err != nil {
		return "", err
	}

	_, _ = tarBall.Seek(0, 0)
	err = archive.Untar(tarBall, buildDir, nil)
	return buildDir, err
}