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utils.go
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/
utils.go
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package pkg
import (
"bytes"
"errors"
"fmt"
"os"
"os/exec"
"gopkg.in/yaml.v2"
)
func processConfig(cfgPath string) (*Input, error) {
raw, err := os.ReadFile(cfgPath)
if err != nil {
return nil, err
}
var cfg Input
// internally yaml.Unmarshal will use json.Unmarshal if it detects json format
err = yaml.Unmarshal(raw, &cfg)
if err != nil {
return nil, err
}
return &cfg, nil
}
// generic function for executing commands on host
func executeCommand(dir, command string, args []string) (string, error) {
cmd := exec.Command(command, args...)
cmd.Dir = dir
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
if err != nil {
return stdout.String(), errors.New(stderr.String())
}
return stdout.String(), nil
}
func (r Repo) cloneRepo(workdir string) error {
args := []string{"-c", fmt.Sprintf(
// clone repo with specified name and checkout specified ref
"git clone %s %s && cd %s && git checkout %s",
r.URL,
r.Name,
r.Name,
r.Ref,
)}
_, err := executeCommand(workdir, "/bin/sh", args)
if err != nil {
return err
}
return nil
}