-
Notifications
You must be signed in to change notification settings - Fork 1
/
shell_executor.go
120 lines (92 loc) · 2 KB
/
shell_executor.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
package strive
import (
"encoding/json"
"expvar"
"io"
"os"
"os/exec"
"path/filepath"
)
var (
// Counters
haShellRuns = expvar.NewInt("agent.shell.runs")
haShellStops = expvar.NewInt("agent.shell.stops")
// Gauges
haShellMonitors = expvar.NewInt("agent.shell.monitors")
)
type ShellExecutor struct {
Logger Logger
WorkSetup WorkSetup
}
type shellHandle struct {
*exec.Cmd
log io.WriteCloser
}
func (sh *shellHandle) Stop(force bool) error {
haShellStops.Add(1)
return sh.Process.Kill()
}
func (sh *shellHandle) Wait() error {
err := sh.Cmd.Wait()
haShellMonitors.Add(-1)
sh.log.Close()
return err
}
func (se *ShellExecutor) Run(task *Task) (TaskHandle, error) {
haShellRuns.Add(1)
out, err := se.Logger.SetupStream("output", task)
if err != nil {
return nil, err
}
errstr, err := se.Logger.SetupStream("error", task)
if err != nil {
return nil, err
}
dir, err := se.WorkSetup.TaskDir(task)
if err != nil {
return nil, err
}
for _, url := range task.Description.Urls {
err = se.WorkSetup.DownloadURL(url, dir)
if err != nil {
return nil, err
}
}
f, err := os.Create(filepath.Join(dir, "metadata.json"))
if err != nil {
return nil, err
}
if task.Description.Metadata == nil {
f.Write([]byte("{}\n"))
} else {
err = json.NewEncoder(f).Encode(JSONVariables(task.Description.Metadata))
}
f.Close()
if err != nil {
return nil, err
}
var cmd *exec.Cmd
if len(task.Description.Exec) > 0 {
args := task.Description.Exec
cmd = exec.Command(args[0], args[1:]...)
} else {
cmd = exec.Command("bash", "-c", task.Description.GetCommand())
}
cmd.Dir = dir
cmd.Stdout = out
cmd.Stderr = errstr
if injShell, ok := se.Logger.(ShellLogInjector); ok {
err = injShell.InjectLog(cmd, task)
if err != nil {
return nil, err
}
}
env := []string{"STRIVE_TASKID=" + task.GetTaskId()}
for _, v := range task.Description.Env {
env = append(env, v.StringKV())
}
cmd.Env = env
cmd.Start()
haShellMonitors.Add(1)
return &shellHandle{cmd, out}, nil
}