forked from vmware-archive/atc
-
Notifications
You must be signed in to change notification settings - Fork 0
/
task.go
160 lines (128 loc) · 3.12 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
package cessna
import (
"bytes"
"archive/tar"
"path"
"os"
"code.cloudfoundry.org/garden"
"code.cloudfoundry.org/lager"
"github.com/concourse/baggageclaim"
uuid "github.com/nu7hatch/gouuid"
"github.com/tedsuo/ifrit"
)
type Task struct {
RootFSGenerator RootFSable
Path string
Args []string
Env []string
Dir string
User string
Privileged bool
}
type TaskResponse struct {
}
func (t *Task) Run(logger lager.Logger, worker Worker, inputs NamedArtifacts, outputs NamedArtifacts) error {
rootFSPath, err := t.RootFSGenerator.RootFSPathFor(logger, worker)
cowArtifacts := make(NamedArtifacts)
var spec baggageclaim.VolumeSpec
for name, volume := range inputs {
spec = baggageclaim.VolumeSpec{
Strategy: baggageclaim.COWStrategy{
Parent: volume,
},
Privileged: t.Privileged,
}
handle, err := uuid.NewV4()
if err != nil {
return err
}
v, err := worker.BaggageClaimClient().CreateVolume(logger, handle.String(), spec)
if err != nil {
return err
}
cowArtifacts[name] = v
}
// Create bindmounts for those COWs
var bindMounts []garden.BindMount
workingDir := "/tmp/build/"
for n, v := range cowArtifacts {
bindMounts = append(bindMounts, garden.BindMount{
SrcPath: v.Path(),
DstPath: path.Join(workingDir, n),
Mode: garden.BindMountModeRW,
})
}
for n, v := range outputs {
bindMounts = append(bindMounts, garden.BindMount{
SrcPath: v.Path(),
DstPath: path.Join(workingDir, n),
Mode: garden.BindMountModeRW,
})
}
// Create container
gardenSpec := garden.ContainerSpec{
Privileged: t.Privileged,
RootFSPath: rootFSPath,
BindMounts: bindMounts,
}
container, err := worker.GardenClient().Create(gardenSpec)
if err != nil {
logger.Error("failed-to-create-gardenContainer-in-garden", err)
return err
}
// Stream fake tar into container to make sure directory exists
// stream into baseDirectory
emptyTar := new(bytes.Buffer)
err = tar.NewWriter(emptyTar).Close()
if err != nil {
return err
}
err = container.StreamIn(garden.StreamInSpec{
Path: workingDir,
TarStream: emptyTar,
})
r := t.RunnerFor(logger, container, workingDir)
task := ifrit.Invoke(r)
return <-task.Wait()
}
func (t *Task) RunnerFor(logger lager.Logger, container garden.Container, workingDir string) *taskContainerProcess {
var (
stdout bytes.Buffer
stderr bytes.Buffer
)
spec := garden.ProcessSpec{
Path: t.Path,
Args: t.Args,
Env: t.Env,
Dir: path.Join(workingDir, t.Dir),
User: t.User,
}
io := garden.ProcessIO{
Stdin: nil,
Stdout: &stdout,
Stderr: &stderr,
}
return &taskContainerProcess{
ContainerProcess: ContainerProcess{
Container: container,
ProcessSpec: spec,
ProcessIO: io,
},
out: &stdout,
err: &stderr,
}
}
type taskContainerProcess struct {
ContainerProcess
out *bytes.Buffer
err *bytes.Buffer
}
func (t *taskContainerProcess) Run(signals <-chan os.Signal, ready chan<- struct{}) error {
err := t.ContainerProcess.Run(signals, ready)
switch e := err.(type) {
case ErrScriptFailed:
e.Stderr = string(t.err.Bytes())
return e
}
return err
}