/
task.go
222 lines (200 loc) · 4.77 KB
/
task.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
// +build linux
package linux
import (
"context"
"github.com/containerd/cgroups"
"github.com/containerd/containerd/api/types/task"
"github.com/containerd/containerd/errdefs"
client "github.com/containerd/containerd/linux/shim"
shim "github.com/containerd/containerd/linux/shim/v1"
"github.com/containerd/containerd/runtime"
"github.com/gogo/protobuf/types"
)
type Task struct {
id string
pid int
shim *client.Client
namespace string
cg cgroups.Cgroup
}
func newTask(id, namespace string, pid int, shim *client.Client) (*Task, error) {
cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(pid))
if err != nil {
return nil, err
}
return &Task{
id: id,
pid: pid,
shim: shim,
namespace: namespace,
cg: cg,
}, nil
}
func (t *Task) ID() string {
return t.id
}
func (t *Task) Info() runtime.TaskInfo {
return runtime.TaskInfo{
ID: t.id,
Runtime: pluginID,
Namespace: t.namespace,
}
}
func (t *Task) Start(ctx context.Context) error {
_, err := t.shim.Start(ctx, &shim.StartRequest{
ID: t.id,
})
if err != nil {
return errdefs.FromGRPC(err)
}
return nil
}
func (t *Task) State(ctx context.Context) (runtime.State, error) {
response, err := t.shim.State(ctx, &shim.StateRequest{
ID: t.id,
})
if err != nil {
return runtime.State{}, errdefs.FromGRPC(err)
}
var status runtime.Status
switch response.Status {
case task.StatusCreated:
status = runtime.CreatedStatus
case task.StatusRunning:
status = runtime.RunningStatus
case task.StatusStopped:
status = runtime.StoppedStatus
case task.StatusPaused:
status = runtime.PausedStatus
case task.StatusPausing:
status = runtime.PausingStatus
}
return runtime.State{
Pid: response.Pid,
Status: status,
Stdin: response.Stdin,
Stdout: response.Stdout,
Stderr: response.Stderr,
Terminal: response.Terminal,
ExitStatus: response.ExitStatus,
ExitedAt: response.ExitedAt,
}, nil
}
func (t *Task) Pause(ctx context.Context) error {
_, err := t.shim.Pause(ctx, empty)
if err != nil {
err = errdefs.FromGRPC(err)
}
return err
}
func (t *Task) Resume(ctx context.Context) error {
if _, err := t.shim.Resume(ctx, empty); err != nil {
return errdefs.FromGRPC(err)
}
return nil
}
func (t *Task) Kill(ctx context.Context, signal uint32, all bool) error {
if _, err := t.shim.Kill(ctx, &shim.KillRequest{
ID: t.id,
Signal: signal,
All: all,
}); err != nil {
return errdefs.FromGRPC(err)
}
return nil
}
func (t *Task) Exec(ctx context.Context, id string, opts runtime.ExecOpts) (runtime.Process, error) {
request := &shim.ExecProcessRequest{
ID: id,
Stdin: opts.IO.Stdin,
Stdout: opts.IO.Stdout,
Stderr: opts.IO.Stderr,
Terminal: opts.IO.Terminal,
Spec: opts.Spec,
}
if _, err := t.shim.Exec(ctx, request); err != nil {
return nil, errdefs.FromGRPC(err)
}
return &Process{
id: id,
t: t,
}, nil
}
func (t *Task) Pids(ctx context.Context) ([]uint32, error) {
resp, err := t.shim.ListPids(ctx, &shim.ListPidsRequest{
ID: t.id,
})
if err != nil {
return nil, errdefs.FromGRPC(err)
}
return resp.Pids, nil
}
func (t *Task) ResizePty(ctx context.Context, size runtime.ConsoleSize) error {
_, err := t.shim.ResizePty(ctx, &shim.ResizePtyRequest{
ID: t.id,
Width: size.Width,
Height: size.Height,
})
if err != nil {
err = errdefs.FromGRPC(err)
}
return err
}
func (t *Task) CloseIO(ctx context.Context) error {
_, err := t.shim.CloseIO(ctx, &shim.CloseIORequest{
ID: t.id,
Stdin: true,
})
if err != nil {
err = errdefs.FromGRPC(err)
}
return err
}
func (t *Task) Checkpoint(ctx context.Context, path string, options *types.Any) error {
r := &shim.CheckpointTaskRequest{
Path: path,
Options: options,
}
if _, err := t.shim.Checkpoint(ctx, r); err != nil {
return errdefs.FromGRPC(err)
}
return nil
}
func (t *Task) DeleteProcess(ctx context.Context, id string) (*runtime.Exit, error) {
r, err := t.shim.DeleteProcess(ctx, &shim.DeleteProcessRequest{
ID: id,
})
if err != nil {
return nil, errdefs.FromGRPC(err)
}
return &runtime.Exit{
Status: r.ExitStatus,
Timestamp: r.ExitedAt,
Pid: r.Pid,
}, nil
}
func (t *Task) Update(ctx context.Context, resources *types.Any) error {
if _, err := t.shim.Update(ctx, &shim.UpdateTaskRequest{
Resources: resources,
}); err != nil {
return errdefs.FromGRPC(err)
}
return nil
}
func (t *Task) Process(ctx context.Context, id string) (runtime.Process, error) {
// TODO: verify process exists for container
return &Process{
id: id,
t: t,
}, nil
}
func (t *Task) Metrics(ctx context.Context) (interface{}, error) {
stats, err := t.cg.Stat(cgroups.IgnoreNotExist)
if err != nil {
return nil, err
}
return stats, nil
}
func (t *Task) Cgroup() cgroups.Cgroup {
return t.cg
}