forked from cloudfoundry/guardian
-
Notifications
You must be signed in to change notification settings - Fork 1
/
log.go
66 lines (49 loc) · 1.43 KB
/
log.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
package runrunc
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"code.cloudfoundry.org/commandrunner"
"code.cloudfoundry.org/guardian/logging"
"code.cloudfoundry.org/lager"
)
//go:generate counterfeiter . RuncCmdRunner
type LoggingCmd func(logFile string) *exec.Cmd
type generateLogFileFunc func() (*os.File, error)
type RuncCmdRunner interface {
RunAndLog(log lager.Logger, cmd LoggingCmd) error
}
type logRunner struct {
runner commandrunner.CommandRunner
generateLogFile generateLogFileFunc
}
func NewLogRunner(runner commandrunner.CommandRunner, logFileGenerator generateLogFileFunc) *logRunner {
return &logRunner{runner, logFileGenerator}
}
func (l *logRunner) RunAndLog(log lager.Logger, loggingCmd LoggingCmd) (err error) {
log = log.Session("run")
logFile, err := l.generateLogFile()
if err != nil {
return err
}
err = l.runner.Run(loggingCmd(logFile.Name()))
return forwardLogs(log, logFile, err)
}
func forwardLogs(log lager.Logger, logFile *os.File, err error) error {
defer os.Remove(logFile.Name())
defer logFile.Close()
buff, readErr := ioutil.ReadAll(logFile)
if readErr != nil {
return fmt.Errorf("read log file: %s", readErr)
}
logging.ForwardRuncLogsToLager(log, "runc", buff)
if err != nil {
return logging.WrapWithErrorFromLastLogLine("runc", err, buff)
}
return nil
}
type LogDir string
func (dir LogDir) GenerateLogFile() (*os.File, error) {
return ioutil.TempFile(string(dir), "")
}