-
Notifications
You must be signed in to change notification settings - Fork 5.3k
/
ports.go
386 lines (323 loc) · 10.3 KB
/
ports.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
package codespace
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"strconv"
"strings"
"time"
"github.com/cli/cli/v2/internal/codespaces"
"github.com/cli/cli/v2/internal/codespaces/api"
"github.com/cli/cli/v2/internal/codespaces/portforwarder"
"github.com/cli/cli/v2/internal/tableprinter"
"github.com/cli/cli/v2/pkg/cmdutil"
"github.com/microsoft/dev-tunnels/go/tunnels"
"github.com/muhammadmuzzammil1998/jsonc"
"github.com/spf13/cobra"
"golang.org/x/sync/errgroup"
)
// newPortsCmd returns a Cobra "ports" command that displays a table of available ports,
// according to the specified flags.
func newPortsCmd(app *App) *cobra.Command {
var (
selector *CodespaceSelector
exporter cmdutil.Exporter
)
portsCmd := &cobra.Command{
Use: "ports",
Short: "List ports in a codespace",
Args: noArgsConstraint,
RunE: func(cmd *cobra.Command, args []string) error {
return app.ListPorts(cmd.Context(), selector, exporter)
},
}
selector = AddCodespaceSelector(portsCmd, app.apiClient)
cmdutil.AddJSONFlags(portsCmd, &exporter, portFields)
portsCmd.AddCommand(newPortsForwardCmd(app, selector))
portsCmd.AddCommand(newPortsVisibilityCmd(app, selector))
return portsCmd
}
// ListPorts lists known ports in a codespace.
func (a *App) ListPorts(ctx context.Context, selector *CodespaceSelector, exporter cmdutil.Exporter) (err error) {
codespace, err := selector.Select(ctx)
if err != nil {
return err
}
devContainerCh := getDevContainer(ctx, a.apiClient, codespace)
codespaceConnection, err := codespaces.GetCodespaceConnection(ctx, a, a.apiClient, codespace)
if err != nil {
return fmt.Errorf("error connecting to codespace: %w", err)
}
fwd, err := portforwarder.NewPortForwarder(ctx, codespaceConnection)
if err != nil {
return fmt.Errorf("failed to create port forwarder: %w", err)
}
defer safeClose(fwd, &err)
var ports []*tunnels.TunnelPort
err = a.RunWithProgress("Fetching ports", func() (err error) {
ports, err = fwd.ListPorts(ctx)
return
})
if err != nil {
return fmt.Errorf("error getting ports of shared servers: %w", err)
}
devContainerResult := <-devContainerCh
if devContainerResult.err != nil {
// Warn about failure to read the devcontainer file. Not a codespace command error.
a.errLogger.Printf("Failed to get port names: %v", devContainerResult.err.Error())
}
var portInfos []*portInfo
for _, p := range ports {
// filter out internal ports from list
if portforwarder.IsInternalPort(p) {
continue
}
portInfos = append(portInfos, &portInfo{
Port: p,
codespace: codespace,
devContainer: devContainerResult.devContainer,
})
}
if err := a.io.StartPager(); err != nil {
a.errLogger.Printf("error starting pager: %v", err)
}
defer a.io.StopPager()
if exporter != nil {
return exporter.Write(a.io, portInfos)
}
cs := a.io.ColorScheme()
tp := tableprinter.New(a.io, tableprinter.WithHeader("LABEL", "PORT", "VISIBILITY", "BROWSE URL"))
for _, port := range portInfos {
// Convert the ACE to a friendly visibility string (private, org, public)
visibility := portforwarder.AccessControlEntriesToVisibility(port.Port.AccessControl.Entries)
tp.AddField(port.Label())
tp.AddField(cs.Yellow(fmt.Sprintf("%d", port.Port.PortNumber)))
tp.AddField(visibility)
tp.AddField(port.BrowseURL())
tp.EndRow()
}
return tp.Render()
}
type portInfo struct {
Port *tunnels.TunnelPort
codespace *api.Codespace
devContainer *devContainer
}
func (pi *portInfo) BrowseURL() string {
return fmt.Sprintf("https://%s-%d.app.github.dev", pi.codespace.Name, pi.Port.PortNumber)
}
func (pi *portInfo) Label() string {
if pi.devContainer != nil {
portStr := strconv.Itoa(int(pi.Port.PortNumber))
if attributes, ok := pi.devContainer.PortAttributes[portStr]; ok {
return attributes.Label
}
}
return ""
}
var portFields = []string{
"sourcePort",
"visibility",
"label",
"browseUrl",
}
func (pi *portInfo) ExportData(fields []string) map[string]interface{} {
data := map[string]interface{}{}
for _, f := range fields {
switch f {
case "sourcePort":
data[f] = pi.Port.PortNumber
case "visibility":
data[f] = portforwarder.AccessControlEntriesToVisibility(pi.Port.AccessControl.Entries)
case "label":
data[f] = pi.Label()
case "browseUrl":
data[f] = pi.BrowseURL()
default:
panic("unknown field: " + f)
}
}
return data
}
type devContainerResult struct {
devContainer *devContainer
err error
}
type devContainer struct {
PortAttributes map[string]portAttribute `json:"portsAttributes"`
}
type portAttribute struct {
Label string `json:"label"`
}
func getDevContainer(ctx context.Context, apiClient apiClient, codespace *api.Codespace) <-chan devContainerResult {
ch := make(chan devContainerResult, 1)
go func() {
contents, err := apiClient.GetCodespaceRepositoryContents(ctx, codespace, ".devcontainer/devcontainer.json")
if err != nil {
ch <- devContainerResult{nil, fmt.Errorf("error getting content: %w", err)}
return
}
if contents == nil {
ch <- devContainerResult{nil, nil}
return
}
convertedJSON := normalizeJSON(jsonc.ToJSON(contents))
if !jsonc.Valid(convertedJSON) {
ch <- devContainerResult{nil, errors.New("failed to convert json to standard json")}
return
}
var container devContainer
if err := json.Unmarshal(convertedJSON, &container); err != nil {
ch <- devContainerResult{nil, fmt.Errorf("error unmarshalling: %w", err)}
return
}
ch <- devContainerResult{&container, nil}
}()
return ch
}
func newPortsVisibilityCmd(app *App, selector *CodespaceSelector) *cobra.Command {
return &cobra.Command{
Use: "visibility <port>:{public|private|org}...",
Short: "Change the visibility of the forwarded port",
Example: "gh codespace ports visibility 80:org 3000:private 8000:public",
Args: cobra.MinimumNArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return app.UpdatePortVisibility(cmd.Context(), selector, args)
},
}
}
func (a *App) UpdatePortVisibility(ctx context.Context, selector *CodespaceSelector, args []string) (err error) {
ports, err := a.parsePortVisibilities(args)
if err != nil {
return fmt.Errorf("error parsing port arguments: %w", err)
}
codespace, err := selector.Select(ctx)
if err != nil {
return err
}
codespaceConnection, err := codespaces.GetCodespaceConnection(ctx, a, a.apiClient, codespace)
if err != nil {
return fmt.Errorf("error connecting to codespace: %w", err)
}
fwd, err := portforwarder.NewPortForwarder(ctx, codespaceConnection)
if err != nil {
return fmt.Errorf("failed to create port forwarder: %w", err)
}
defer safeClose(fwd, &err)
// TODO: check if port visibility can be updated in parallel instead of sequentially
for _, port := range ports {
err := a.RunWithProgress(fmt.Sprintf("Updating port %d visibility to: %s", port.number, port.visibility), func() (err error) {
// wait for success or failure
ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
defer cancel()
err = fwd.UpdatePortVisibility(ctx, port.number, port.visibility)
if err != nil {
return fmt.Errorf("error updating port %d to %s: %w", port.number, port.visibility, err)
}
return nil
})
if err != nil {
return err
}
}
return nil
}
type portVisibility struct {
number int
visibility string
}
func (a *App) parsePortVisibilities(args []string) ([]portVisibility, error) {
ports := make([]portVisibility, 0, len(args))
for _, a := range args {
fields := strings.Split(a, ":")
if len(fields) != 2 {
return nil, fmt.Errorf("invalid port visibility format for %q", a)
}
portStr, visibility := fields[0], fields[1]
portNumber, err := strconv.Atoi(portStr)
if err != nil {
return nil, fmt.Errorf("invalid port number: %w", err)
}
ports = append(ports, portVisibility{portNumber, visibility})
}
return ports, nil
}
// NewPortsForwardCmd returns a Cobra "ports forward" subcommand, which forwards a set of
// port pairs from the codespace to localhost.
func newPortsForwardCmd(app *App, selector *CodespaceSelector) *cobra.Command {
return &cobra.Command{
Use: "forward <remote-port>:<local-port>...",
Short: "Forward ports",
Args: cobra.MinimumNArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return app.ForwardPorts(cmd.Context(), selector, args)
},
}
}
func (a *App) ForwardPorts(ctx context.Context, selector *CodespaceSelector, ports []string) (err error) {
portPairs, err := getPortPairs(ports)
if err != nil {
return fmt.Errorf("get port pairs: %w", err)
}
codespace, err := selector.Select(ctx)
if err != nil {
return err
}
codespaceConnection, err := codespaces.GetCodespaceConnection(ctx, a, a.apiClient, codespace)
if err != nil {
return fmt.Errorf("error connecting to codespace: %w", err)
}
// Run forwarding of all ports concurrently, aborting all of
// them at the first failure, including cancellation of the context.
group, ctx := errgroup.WithContext(ctx)
for _, pair := range portPairs {
pair := pair
group.Go(func() error {
listen, _, err := codespaces.ListenTCP(pair.local, true)
if err != nil {
return err
}
defer listen.Close()
a.errLogger.Printf("Forwarding ports: remote %d <=> local %d", pair.remote, pair.local)
fwd, err := portforwarder.NewPortForwarder(ctx, codespaceConnection)
if err != nil {
return fmt.Errorf("failed to create port forwarder: %w", err)
}
defer safeClose(fwd, &err)
opts := portforwarder.ForwardPortOpts{
Port: pair.remote,
}
return fwd.ForwardPortToListener(ctx, opts, listen)
})
}
return group.Wait() // first error
}
type portPair struct {
remote, local int
}
// getPortPairs parses a list of strings of form "%d:%d" into pairs of (remote, local) numbers.
func getPortPairs(ports []string) ([]portPair, error) {
pp := make([]portPair, 0, len(ports))
for _, portString := range ports {
parts := strings.Split(portString, ":")
if len(parts) < 2 {
return nil, fmt.Errorf("port pair: %q is not valid", portString)
}
remote, err := strconv.Atoi(parts[0])
if err != nil {
return pp, fmt.Errorf("convert remote port to int: %w", err)
}
local, err := strconv.Atoi(parts[1])
if err != nil {
return pp, fmt.Errorf("convert local port to int: %w", err)
}
pp = append(pp, portPair{remote, local})
}
return pp, nil
}
func normalizeJSON(j []byte) []byte {
// remove trailing commas
return bytes.ReplaceAll(j, []byte("},}"), []byte("}}"))
}