forgejo-federation/cmd/dump.go

463 lines
12 KiB
Go

// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2016 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package cmd
import (
"fmt"
"io"
"os"
"path"
"path/filepath"
"strings"
"time"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/modules/util"
"gitea.com/go-chi/session"
"github.com/mholt/archiver/v3"
"github.com/urfave/cli"
)
func addReader(w archiver.Writer, r io.ReadCloser, info os.FileInfo, customName string, verbose bool) error {
if verbose {
log.Info("Adding file %s", customName)
}
return w.Write(archiver.File{
FileInfo: archiver.FileInfo{
FileInfo: info,
CustomName: customName,
},
ReadCloser: r,
})
}
func addFile(w archiver.Writer, filePath, absPath string, verbose bool) error {
file, err := os.Open(absPath)
if err != nil {
return err
}
defer file.Close()
fileInfo, err := file.Stat()
if err != nil {
return err
}
return addReader(w, file, fileInfo, filePath, verbose)
}
func isSubdir(upper, lower string) (bool, error) {
if relPath, err := filepath.Rel(upper, lower); err != nil {
return false, err
} else if relPath == "." || !strings.HasPrefix(relPath, ".") {
return true, nil
}
return false, nil
}
type outputType struct {
Enum []string
Default string
selected string
}
func (o outputType) Join() string {
return strings.Join(o.Enum, ", ")
}
func (o *outputType) Set(value string) error {
for _, enum := range o.Enum {
if enum == value {
o.selected = value
return nil
}
}
return fmt.Errorf("allowed values are %s", o.Join())
}
func (o outputType) String() string {
if o.selected == "" {
return o.Default
}
return o.selected
}
var outputTypeEnum = &outputType{
Enum: []string{"zip", "tar", "tar.sz", "tar.gz", "tar.xz", "tar.bz2", "tar.br", "tar.lz4"},
Default: "zip",
}
// CmdDump represents the available dump sub-command.
var CmdDump = cli.Command{
Name: "dump",
Usage: "Dump Gitea files and database",
Description: `Dump compresses all related files and database into zip file.
It can be used for backup and capture Gitea server image to send to maintainer`,
Action: runDump,
Flags: []cli.Flag{
cli.StringFlag{
Name: "file, f",
Value: fmt.Sprintf("gitea-dump-%d.zip", time.Now().Unix()),
Usage: "Name of the dump file which will be created. Supply '-' for stdout. See type for available types.",
},
cli.BoolFlag{
Name: "verbose, V",
Usage: "Show process details",
},
cli.StringFlag{
Name: "tempdir, t",
Value: os.TempDir(),
Usage: "Temporary dir path",
},
cli.StringFlag{
Name: "database, d",
Usage: "Specify the database SQL syntax",
},
cli.BoolFlag{
Name: "skip-repository, R",
Usage: "Skip the repository dumping",
},
cli.BoolFlag{
Name: "skip-log, L",
Usage: "Skip the log dumping",
},
cli.BoolFlag{
Name: "skip-custom-dir",
Usage: "Skip custom directory",
},
cli.BoolFlag{
Name: "skip-lfs-data",
Usage: "Skip LFS data",
},
cli.BoolFlag{
Name: "skip-attachment-data",
Usage: "Skip attachment data",
},
cli.BoolFlag{
Name: "skip-package-data",
Usage: "Skip package data",
},
cli.GenericFlag{
Name: "type",
Value: outputTypeEnum,
Usage: fmt.Sprintf("Dump output format: %s", outputTypeEnum.Join()),
},
},
}
func fatal(format string, args ...interface{}) {
fmt.Fprintf(os.Stderr, format+"\n", args...)
log.Fatal(format, args...)
}
func runDump(ctx *cli.Context) error {
var file *os.File
fileName := ctx.String("file")
outType := ctx.String("type")
if fileName == "-" {
file = os.Stdout
err := log.DelLogger("console")
if err != nil {
fatal("Deleting default logger failed. Can not write to stdout: %v", err)
}
} else {
for _, suffix := range outputTypeEnum.Enum {
if strings.HasSuffix(fileName, "."+suffix) {
fileName = strings.TrimSuffix(fileName, "."+suffix)
break
}
}
fileName += "." + outType
}
setting.LoadFromExisting()
// make sure we are logging to the console no matter what the configuration tells us do to
if _, err := setting.Cfg.Section("log").NewKey("MODE", "console"); err != nil {
fatal("Setting logging mode to console failed: %v", err)
}
if _, err := setting.Cfg.Section("log.console").NewKey("STDERR", "true"); err != nil {
fatal("Setting console logger to stderr failed: %v", err)
}
if !setting.InstallLock {
log.Error("Is '%s' really the right config path?\n", setting.CustomConf)
return fmt.Errorf("gitea is not initialized")
}
setting.NewServices() // cannot access session settings otherwise
stdCtx, cancel := installSignals()
defer cancel()
err := db.InitEngine(stdCtx)
if err != nil {
return err
}
if err := storage.Init(); err != nil {
return err
}
if file == nil {
file, err = os.Create(fileName)
if err != nil {
fatal("Unable to open %s: %v", fileName, err)
}
}
defer file.Close()
absFileName, err := filepath.Abs(fileName)
if err != nil {
return err
}
verbose := ctx.Bool("verbose")
var iface interface{}
if fileName == "-" {
iface, err = archiver.ByExtension(fmt.Sprintf(".%s", outType))
} else {
iface, err = archiver.ByExtension(fileName)
}
if err != nil {
fatal("Unable to get archiver for extension: %v", err)
}
w, _ := iface.(archiver.Writer)
if err := w.Create(file); err != nil {
fatal("Creating archiver.Writer failed: %v", err)
}
defer w.Close()
if ctx.IsSet("skip-repository") && ctx.Bool("skip-repository") {
log.Info("Skip dumping local repositories")
} else {
log.Info("Dumping local repositories... %s", setting.RepoRootPath)
if err := addRecursiveExclude(w, "repos", setting.RepoRootPath, []string{absFileName}, verbose); err != nil {
fatal("Failed to include repositories: %v", err)
}
if ctx.IsSet("skip-lfs-data") && ctx.Bool("skip-lfs-data") {
log.Info("Skip dumping LFS data")
} else if err := storage.LFS.IterateObjects(func(objPath string, object storage.Object) error {
info, err := object.Stat()
if err != nil {
return err
}
return addReader(w, object, info, path.Join("data", "lfs", objPath), verbose)
}); err != nil {
fatal("Failed to dump LFS objects: %v", err)
}
}
tmpDir := ctx.String("tempdir")
if _, err := os.Stat(tmpDir); os.IsNotExist(err) {
fatal("Path does not exist: %s", tmpDir)
}
dbDump, err := os.CreateTemp(tmpDir, "gitea-db.sql")
if err != nil {
fatal("Failed to create tmp file: %v", err)
}
defer func() {
if err := util.Remove(dbDump.Name()); err != nil {
log.Warn("Unable to remove temporary file: %s: Error: %v", dbDump.Name(), err)
}
}()
targetDBType := ctx.String("database")
if len(targetDBType) > 0 && targetDBType != setting.Database.Type {
log.Info("Dumping database %s => %s...", setting.Database.Type, targetDBType)
} else {
log.Info("Dumping database...")
}
if err := db.DumpDatabase(dbDump.Name(), targetDBType); err != nil {
fatal("Failed to dump database: %v", err)
}
if err := addFile(w, "gitea-db.sql", dbDump.Name(), verbose); err != nil {
fatal("Failed to include gitea-db.sql: %v", err)
}
if len(setting.CustomConf) > 0 {
log.Info("Adding custom configuration file from %s", setting.CustomConf)
if err := addFile(w, "app.ini", setting.CustomConf, verbose); err != nil {
fatal("Failed to include specified app.ini: %v", err)
}
}
if ctx.IsSet("skip-custom-dir") && ctx.Bool("skip-custom-dir") {
log.Info("Skipping custom directory")
} else {
customDir, err := os.Stat(setting.CustomPath)
if err == nil && customDir.IsDir() {
if is, _ := isSubdir(setting.AppDataPath, setting.CustomPath); !is {
if err := addRecursiveExclude(w, "custom", setting.CustomPath, []string{absFileName}, verbose); err != nil {
fatal("Failed to include custom: %v", err)
}
} else {
log.Info("Custom dir %s is inside data dir %s, skipped", setting.CustomPath, setting.AppDataPath)
}
} else {
log.Info("Custom dir %s doesn't exist, skipped", setting.CustomPath)
}
}
isExist, err := util.IsExist(setting.AppDataPath)
if err != nil {
log.Error("Unable to check if %s exists. Error: %v", setting.AppDataPath, err)
}
if isExist {
log.Info("Packing data directory...%s", setting.AppDataPath)
var excludes []string
if setting.Cfg.Section("session").Key("PROVIDER").Value() == "file" {
var opts session.Options
if err = json.Unmarshal([]byte(setting.SessionConfig.ProviderConfig), &opts); err != nil {
return err
}
excludes = append(excludes, opts.ProviderConfig)
}
excludes = append(excludes, setting.RepoRootPath)
excludes = append(excludes, setting.LFS.Path)
excludes = append(excludes, setting.Attachment.Path)
excludes = append(excludes, setting.Packages.Path)
excludes = append(excludes, setting.LogRootPath)
excludes = append(excludes, absFileName)
if err := addRecursiveExclude(w, "data", setting.AppDataPath, excludes, verbose); err != nil {
fatal("Failed to include data directory: %v", err)
}
}
if ctx.IsSet("skip-attachment-data") && ctx.Bool("skip-attachment-data") {
log.Info("Skip dumping attachment data")
} else if err := storage.Attachments.IterateObjects(func(objPath string, object storage.Object) error {
info, err := object.Stat()
if err != nil {
return err
}
return addReader(w, object, info, path.Join("data", "attachments", objPath), verbose)
}); err != nil {
fatal("Failed to dump attachments: %v", err)
}
if ctx.IsSet("skip-package-data") && ctx.Bool("skip-package-data") {
log.Info("Skip dumping package data")
} else if err := storage.Packages.IterateObjects(func(objPath string, object storage.Object) error {
info, err := object.Stat()
if err != nil {
return err
}
return addReader(w, object, info, path.Join("data", "packages", objPath), verbose)
}); err != nil {
fatal("Failed to dump packages: %v", err)
}
// Doesn't check if LogRootPath exists before processing --skip-log intentionally,
// ensuring that it's clear the dump is skipped whether the directory's initialized
// yet or not.
if ctx.IsSet("skip-log") && ctx.Bool("skip-log") {
log.Info("Skip dumping log files")
} else {
isExist, err := util.IsExist(setting.LogRootPath)
if err != nil {
log.Error("Unable to check if %s exists. Error: %v", setting.LogRootPath, err)
}
if isExist {
if err := addRecursiveExclude(w, "log", setting.LogRootPath, []string{absFileName}, verbose); err != nil {
fatal("Failed to include log: %v", err)
}
}
}
if fileName != "-" {
if err = w.Close(); err != nil {
_ = util.Remove(fileName)
fatal("Failed to save %s: %v", fileName, err)
}
if err := os.Chmod(fileName, 0o600); err != nil {
log.Info("Can't change file access permissions mask to 0600: %v", err)
}
}
if fileName != "-" {
log.Info("Finish dumping in file %s", fileName)
} else {
log.Info("Finish dumping to stdout")
}
return nil
}
func contains(slice []string, s string) bool {
for _, v := range slice {
if v == s {
return true
}
}
return false
}
// addRecursiveExclude zips absPath to specified insidePath inside writer excluding excludeAbsPath
func addRecursiveExclude(w archiver.Writer, insidePath, absPath string, excludeAbsPath []string, verbose bool) error {
absPath, err := filepath.Abs(absPath)
if err != nil {
return err
}
dir, err := os.Open(absPath)
if err != nil {
return err
}
defer dir.Close()
files, err := dir.Readdir(0)
if err != nil {
return err
}
for _, file := range files {
currentAbsPath := path.Join(absPath, file.Name())
currentInsidePath := path.Join(insidePath, file.Name())
if file.IsDir() {
if !contains(excludeAbsPath, currentAbsPath) {
if err := addFile(w, currentInsidePath, currentAbsPath, false); err != nil {
return err
}
if err = addRecursiveExclude(w, currentInsidePath, currentAbsPath, excludeAbsPath, verbose); err != nil {
return err
}
}
} else {
// only copy regular files and symlink regular files, skip non-regular files like socket/pipe/...
shouldAdd := file.Mode().IsRegular()
if !shouldAdd && file.Mode()&os.ModeSymlink == os.ModeSymlink {
target, err := filepath.EvalSymlinks(currentAbsPath)
if err != nil {
return err
}
targetStat, err := os.Stat(target)
if err != nil {
return err
}
shouldAdd = targetStat.Mode().IsRegular()
}
if shouldAdd {
if err = addFile(w, currentInsidePath, currentAbsPath, verbose); err != nil {
return err
}
}
}
}
return nil
}