/
impl.go
401 lines (329 loc) · 9.78 KB
/
impl.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
// Copyright (c) 2020, the Drone Plugins project authors.
// Please see the AUTHORS file for details. All rights reserved.
// Use of this source code is governed by an Apache 2.0 license that can be
// found in the LICENSE file.
package plugin
import (
"context"
"fmt"
"io"
"net/http"
"net/url"
"os"
"path/filepath"
"strings"
"github.com/google/go-github/v55/github"
"github.com/sirupsen/logrus"
"github.com/urfave/cli/v2"
"golang.org/x/oauth2"
)
// Settings for the Plugin.
type Settings struct {
GitHubURL string
APIKey string
Owner string
Name string
Tag string
Path string
Files cli.StringSlice
githubURL *url.URL
}
const latestTag = "latest"
const prereleaseTag = "prerelease"
// Validate handles the settings validation of the plugin.
func (p *Plugin) Validate() error {
// Validate the config
if p.settings.APIKey == "" {
return fmt.Errorf("no api key provided")
}
if p.settings.Owner == "" {
return fmt.Errorf("no repository owner provided")
}
if p.settings.Name == "" {
return fmt.Errorf("no repository name provided")
}
uri, err := url.Parse(p.settings.GitHubURL)
if err != nil {
return fmt.Errorf("could not parse GitHub link")
}
// Remove the path in the case that DRONE_REPO_LINK was passed in
uri.Path = ""
p.settings.githubURL = uri
if len(p.settings.Files.Value()) == 0 {
return fmt.Errorf("no files specified")
}
// Set defaults
if strings.TrimSpace(p.settings.Tag) == "" {
p.settings.Tag = latestTag
}
return nil
}
// Execute provides the implementation of the plugin.
func (p *Plugin) Execute() error {
// Create the client
ts := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: p.settings.APIKey})
tc := oauth2.NewClient(
context.WithValue(context.Background(), oauth2.HTTPClient, p.network.Client),
ts,
)
client := github.NewClient(tc)
if p.settings.githubURL.Hostname() != "github.com" {
relBaseURL, _ := url.Parse("./api/v3/")
relUploadURL, _ := url.Parse("./api/v3/upload/")
client.BaseURL = p.settings.githubURL.ResolveReference(relBaseURL)
client.UploadURL = p.settings.githubURL.ResolveReference(relUploadURL)
}
logrus.WithFields(logrus.Fields{
"github-url": p.settings.githubURL.String(),
"base-url": client.BaseURL.String(),
"upload-url": client.BaseURL.String(),
}).Debug("connecting to github instance")
// Get the repository
repo, _, err := client.Repositories.Get(p.network.Context, p.settings.Owner, p.settings.Name)
if err != nil {
return fmt.Errorf("error getting repository %s/%s: %w", p.settings.Owner, p.settings.Name, err)
}
logrus.WithFields(logrus.Fields{
"fullname": repo.GetFullName(),
"html-url": repo.GetHTMLURL(),
}).Info("found repository")
// Get the release
release, err := p.getRelease(client)
if err != nil {
return fmt.Errorf("error getting release %s: %w", p.settings.Tag, err)
}
logrus.WithFields(logrus.Fields{
"tag": release.GetTagName(),
"name": release.GetName(),
"published-at": release.GetPublishedAt(),
}).Info("found release")
// Determine if the source code tarball or zipball is being requested
tarball := false
zipball := false
for _, file := range p.settings.Files.Value() {
if strings.EqualFold("tarball", file) {
tarball = true
} else if strings.EqualFold("zipball", file) {
zipball = true
}
}
// Get the assets
assets, err := p.getReleaseAssets(client, release)
if err != nil && (!tarball && !zipball) {
return fmt.Errorf("error getting release %s assets: %w", p.settings.Tag, err)
}
// Get the path to download to
downloadPath, err := filepath.Abs(p.settings.Path)
if err != nil {
return fmt.Errorf("could not create download path %s: %w", p.settings.Path, err)
}
err = os.MkdirAll(downloadPath, os.ModeDir)
if err != nil {
return fmt.Errorf("could not create directory %s: %w", p.settings.Path, err)
}
logrus.WithField("path", downloadPath).Info("downloading assets to")
// Start downloading the files
for _, asset := range assets {
name := asset.GetName()
logrus.WithFields(logrus.Fields{
"name": name,
"content-type": asset.GetContentType(),
"created-at": asset.GetCreatedAt(),
}).Info("downloading asset")
var rc io.ReadCloser
rc, redirectURL, err := client.Repositories.DownloadReleaseAsset(
p.network.Context,
p.settings.Owner,
p.settings.Name,
asset.GetID(),
p.network.Client,
)
if err != nil {
return fmt.Errorf("error while downloading %s: %w", name, err)
}
// DownloadReleaseAsset either returns a io.ReadCloser or a redirect URL
// if there is no error so it can be assumed that we have a URL
if rc == nil {
resp, err := p.network.Client.Get(redirectURL)
if err != nil {
return fmt.Errorf("error while downloading %s from %s: %w", name, redirectURL, err)
}
rc = resp.Body
}
defer rc.Close()
err = writeAsset(rc, name, downloadPath)
if err != nil {
return err
}
}
if tarball {
p.downloadAssetFromURL(release.GetTarballURL(), "release.tar.gz", downloadPath)
if err != nil {
return fmt.Errorf("error while downloading tarball: %w", err)
}
}
if zipball {
p.downloadAssetFromURL(release.GetZipballURL(), "release.zip", downloadPath)
if err != nil {
return fmt.Errorf("error while downloading zipball: %w", err)
}
}
return nil
}
func (p *Plugin) getReleaseAssets(client *github.Client, release *github.RepositoryRelease) ([]*github.ReleaseAsset, error) {
// Iterate over release assets
var assetsToDownload []*github.ReleaseAsset
opt := &github.ListOptions{PerPage: 10}
files := p.settings.Files.Value()
fileCount := len(files)
for {
logrus.WithFields(logrus.Fields{
"page": opt.Page,
"per-page": opt.PerPage,
}).Debug("getting release asset page")
assets, resp, err := client.Repositories.ListReleaseAssets(
p.network.Context,
p.settings.Owner,
p.settings.Name,
release.GetID(),
opt,
)
if err != nil {
return nil, fmt.Errorf("error getting release asssets: %w", err)
}
for _, asset := range assets {
assetName := asset.GetName()
logrus.WithFields(logrus.Fields{
"name": assetName,
"content-type": asset.GetContentType(),
"created-at": asset.GetCreatedAt(),
}).Debug("found asset")
for _, file := range files {
match, err := filepath.Match(file, assetName)
if err != nil {
return nil, fmt.Errorf("error with file matching pattern %s: %w", file, err)
}
if match {
assetsToDownload = append(assetsToDownload, asset)
if len(assetsToDownload) == fileCount {
logrus.Debug("all assets found")
break
}
}
}
}
if resp.NextPage == 0 {
break
}
opt.Page = resp.NextPage
}
// Error checking for assets
if len(assetsToDownload) != fileCount {
var missing []string
for _, file := range files {
found := false
for _, asset := range assetsToDownload {
if file == asset.GetName() {
found = true
break
}
}
if !found {
missing = append(missing, file)
}
}
return nil, fmt.Errorf("missing files in download %s", missing)
}
return assetsToDownload, nil
}
func (p *Plugin) getRelease(client *github.Client) (*github.RepositoryRelease, error) {
logrus.WithField("tag", p.settings.Tag).Info("retrieving release")
var release *github.RepositoryRelease
var err error
tag := p.settings.Tag
if tag == latestTag {
logrus.Debug("getting latest release")
release, _, err = client.Repositories.GetLatestRelease(p.network.Context, p.settings.Owner, p.settings.Name)
} else if tag == prereleaseTag {
logrus.Debug("getting latest prerelease")
release, err = p.getLatestPrerelease(client)
} else {
logrus.Debug("getting release by tag")
release, _, err = client.Repositories.GetReleaseByTag(p.network.Context, p.settings.Owner, p.settings.Name, p.settings.Tag)
}
return release, err
}
func (p *Plugin) getLatestPrerelease(client *github.Client) (*github.RepositoryRelease, error) {
var release *github.RepositoryRelease
opt := &github.ListOptions{PerPage: 10}
for {
logrus.WithFields(logrus.Fields{
"page": opt.Page,
"per-page": opt.PerPage,
}).Debug("getting release listing page")
releases, resp, err := client.Repositories.ListReleases(
p.network.Context,
p.settings.Owner,
p.settings.Name,
opt,
)
if err != nil {
return nil, fmt.Errorf("error getting release asssets: %w", err)
}
for _, r := range releases {
if r.GetPrerelease() {
if release == nil {
release = r
} else if r.GetPublishedAt().After(release.GetPublishedAt().Time) {
release = r
}
}
}
if resp.NextPage == 0 {
break
}
opt.Page = resp.NextPage
}
if release == nil {
return nil, fmt.Errorf("could not find latest prerelease")
}
return release, nil
}
func (p *Plugin) downloadAssetFromURL(url, name, downloadPath string) error {
logrus.WithFields(logrus.Fields{
"name": name,
"url": url,
}).Info("downloading asset")
resp, err := p.network.Client.Get(url)
if err != nil {
return fmt.Errorf("error while downloading %s from %s: %w", name, url, err)
}
rc := resp.Body
defer rc.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("request for %s failed, status %s", url, http.StatusText(resp.StatusCode))
}
return writeAsset(rc, name, downloadPath)
}
func writeAsset(rc io.ReadCloser, name, downloadPath string) error {
assetPath := filepath.Join(downloadPath, name)
out, err := os.Create(assetPath)
if err != nil {
return fmt.Errorf("error creating file at %s: %w", assetPath, err)
}
defer out.Close()
_, err = io.Copy(out, rc)
if err != nil {
return fmt.Errorf("error while downloading file %s: %w", name, err)
}
fileInfo, err := out.Stat()
if err != nil {
return fmt.Errorf("error when getting file information for %s: %w", assetPath, err)
}
logrus.WithFields(logrus.Fields{
"name": name,
"path": assetPath,
"bytes": fileInfo.Size(),
}).Info("wrote asset")
return nil
}