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util.go
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util.go
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package main
import (
"context"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
log "github.com/sirupsen/logrus"
)
func parseTimeout(timeout string) time.Duration {
if t, err := time.ParseDuration(timeout); err == nil {
return t
}
return time.Duration(0)
}
func execCommand(script string, args string, timeout time.Duration) (string, error) {
var (
ctx context.Context
cancel context.CancelFunc
)
logger.WithFields(log.Fields{"script": script}).Info("execCommand(): Script")
logger.WithFields(log.Fields{"args": args}).Info("execCommand(): Args")
logger.WithFields(log.Fields{"timeout": timeout}).Info("execCommand(): Timeout Value")
if timeout != time.Duration(0) {
ctx, cancel = context.WithTimeout(context.Background(), timeout)
} else {
ctx, cancel = context.WithCancel(context.Background())
}
defer cancel()
a := strings.Split(args, " ")
c := exec.CommandContext(ctx, script, a...)
c.Env = os.Environ()
if v, err := c.CombinedOutput(); err != nil {
if ctx.Err() == context.DeadlineExceeded {
logger.WithFields(log.Fields{"error": err.Error()}).Error("execCommand(): Timeout Exceed")
return "", fmt.Errorf("execCommand(): TimeoutError '%v', output '%v", err, string(v))
} else {
logger.WithFields(log.Fields{"error": err.Error()}).Error("execCommand(): Non-zero exit code")
return "", fmt.Errorf("execCommand(): ExitCodeNotZero '%v', output '%v", err, string(v))
}
} else {
return string(v), nil
}
}
func saveFile(file io.Reader, dir string, name string, mode os.FileMode) (string, error) {
fileDest := filepath.Join(dir, name)
logger.WithFields(log.Fields{"fileDest": fileDest}).Info("saveFile(): Destination")
// Read file content
fileBytes, err := ioutil.ReadAll(file)
if err != nil {
return "", fmt.Errorf("saveFile(): ReadAllError '%v'", err)
}
// Create Base Directory
if err := os.MkdirAll(dir, 0755); err != nil {
return "", fmt.Errorf("saveFile(): MkdirAll '%v'", err)
}
// Write content
if err := ioutil.WriteFile(fileDest, fileBytes, mode); err != nil {
return "", fmt.Errorf("saveFile(): WriteFileError '%v'", err)
}
return fileDest, nil
}