refactor progress

fluxer_devops/livekitctl/internal/util/util.go

@@ -0,0 +1,258 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package util
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"os/user"
+	"path/filepath"
+	"strconv"
+	"time"
+
+	"github.com/fluxerapp/fluxer/fluxer_devops/livekitctl/internal/errors"
+)
+
+func Log(msg string) {
+	fmt.Println(msg)
+}
+
+func Logf(format string, args ...interface{}) {
+	fmt.Printf(format+"\n", args...)
+}
+
+func Which(binName string) string {
+	path, err := exec.LookPath(binName)
+	if err != nil {
+		return ""
+	}
+	return path
+}
+
+type RunOptions struct {
+	Check   bool
+	Capture bool
+	Env     []string
+	Cwd     string
+}
+
+type RunResult struct {
+	ExitCode int
+	Output   string
+}
+
+func Run(cmd []string, opts RunOptions) (*RunResult, error) {
+	if len(cmd) == 0 {
+		return nil, errors.NewCmdError("empty command", nil)
+	}
+
+	c := exec.Command(cmd[0], cmd[1:]...)
+	if opts.Cwd != "" {
+		c.Dir = opts.Cwd
+	}
+	if len(opts.Env) > 0 {
+		c.Env = append(os.Environ(), opts.Env...)
+	}
+
+	var output bytes.Buffer
+	if opts.Capture {
+		c.Stdout = &output
+		c.Stderr = &output
+	} else {
+		c.Stdout = os.Stdout
+		c.Stderr = os.Stderr
+	}
+
+	err := c.Run()
+	exitCode := 0
+	if err != nil {
+		if exitErr, ok := err.(*exec.ExitError); ok {
+			exitCode = exitErr.ExitCode()
+		} else {
+			return nil, errors.NewCmdError(fmt.Sprintf("command not found: %s", cmd[0]), err)
+		}
+	}
+
+	result := &RunResult{
+		ExitCode: exitCode,
+		Output:   output.String(),
+	}
+
+	if opts.Check && exitCode != 0 {
+		return result, errors.NewCmdError(
+			fmt.Sprintf("command failed (%d): %v\n%s", exitCode, cmd, result.Output),
+			nil,
+		)
+	}
+
+	return result, nil
+}
+
+func RunSimple(cmd []string) error {
+	_, err := Run(cmd, RunOptions{Check: true, Capture: false})
+	return err
+}
+
+func RunCapture(cmd []string) (string, error) {
+	result, err := Run(cmd, RunOptions{Check: true, Capture: true})
+	if err != nil {
+		return "", err
+	}
+	return result.Output, nil
+}
+
+func RunCaptureNoCheck(cmd []string) (string, int) {
+	result, _ := Run(cmd, RunOptions{Check: false, Capture: true})
+	if result == nil {
+		return "", -1
+	}
+	return result.Output, result.ExitCode
+}
+
+func AtomicWriteText(path string, content string, mode os.FileMode, uid, gid int) error {
+	dir := filepath.Dir(path)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return err
+	}
+
+	tmpFile, err := os.CreateTemp(dir, ".tmp-")
+	if err != nil {
+		return err
+	}
+	tmpName := tmpFile.Name()
+
+	_, err = tmpFile.WriteString(content)
+	if err != nil {
+		tmpFile.Close()
+		os.Remove(tmpName)
+		return err
+	}
+
+	if err := tmpFile.Sync(); err != nil {
+		tmpFile.Close()
+		os.Remove(tmpName)
+		return err
+	}
+
+	tmpFile.Close()
+
+	if err := os.Chmod(tmpName, mode); err != nil {
+		os.Remove(tmpName)
+		return err
+	}
+
+	if uid >= 0 || gid >= 0 {
+		if err := os.Chown(tmpName, uid, gid); err != nil {
+			os.Remove(tmpName)
+			return err
+		}
+	}
+
+	return os.Rename(tmpName, path)
+}
+
+func ReadJSON(path string, v interface{}) error {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	return json.Unmarshal(data, v)
+}
+
+func WriteJSON(path string, v interface{}, mode os.FileMode, uid, gid int) error {
+	data, err := json.MarshalIndent(v, "", "  ")
+	if err != nil {
+		return err
+	}
+	content := string(data) + "\n"
+	return AtomicWriteText(path, content, mode, uid, gid)
+}
+
+func NowRFC3339() string {
+	return time.Now().UTC().Format(time.RFC3339)
+}
+
+func EnsureDir(path string, mode os.FileMode, uid, gid int) error {
+	if err := os.MkdirAll(path, mode); err != nil {
+		return err
+	}
+	if err := os.Chmod(path, mode); err != nil {
+		return err
+	}
+	if uid >= 0 || gid >= 0 {
+		if err := os.Chown(path, uid, gid); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+type UserGroup struct {
+	UID int
+	GID int
+}
+
+func LookupUserGroup(username string) *UserGroup {
+	u, err := user.Lookup(username)
+	if err != nil {
+		return nil
+	}
+
+	uid, err := strconv.Atoi(u.Uid)
+	if err != nil {
+		return nil
+	}
+
+	gid, err := strconv.Atoi(u.Gid)
+	if err != nil {
+		return nil
+	}
+
+	return &UserGroup{UID: uid, GID: gid}
+}
+
+func FileExists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil
+}
+
+func CopyFile(src, dst string) error {
+	srcFile, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	dstFile, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer dstFile.Close()
+
+	_, err = io.Copy(dstFile, srcFile)
+	return err
+}