mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-22 21:14:18 -04:00
Allow dev i18n to be more concurrent (#20159)
The recent changes to add live-reloading to the i18n translation files made the i18n code totally non-concurrent when using dev. This will make discovering other concurrency related issues far more difficult. This PR fixes these, adds some more comments to the code and slightly restructures a few functions. Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
parent
33f6f91008
commit
ba0f9274e9
@ -25,9 +25,13 @@ var (
|
|||||||
)
|
)
|
||||||
|
|
||||||
type locale struct {
|
type locale struct {
|
||||||
|
// This mutex will be set if we have live-reload enabled (e.g. dev mode)
|
||||||
|
reloadMu *sync.RWMutex
|
||||||
|
|
||||||
store *LocaleStore
|
store *LocaleStore
|
||||||
langName string
|
langName string
|
||||||
textMap map[int]string // the map key (idx) is generated by store's textIdxMap
|
|
||||||
|
idxToMsgMap map[int]string // the map idx is generated by store's trKeyToIdxMap
|
||||||
|
|
||||||
sourceFileName string
|
sourceFileName string
|
||||||
sourceFileInfo os.FileInfo
|
sourceFileInfo os.FileInfo
|
||||||
@ -35,164 +39,254 @@ type locale struct {
|
|||||||
}
|
}
|
||||||
|
|
||||||
type LocaleStore struct {
|
type LocaleStore struct {
|
||||||
reloadMu *sync.Mutex // for non-prod(dev), use a mutex for live-reload. for prod, no mutex, no live-reload.
|
// This mutex will be set if we have live-reload enabled (e.g. dev mode)
|
||||||
|
reloadMu *sync.RWMutex
|
||||||
|
|
||||||
langNames []string
|
langNames []string
|
||||||
langDescs []string
|
langDescs []string
|
||||||
|
localeMap map[string]*locale
|
||||||
|
|
||||||
localeMap map[string]*locale
|
// this needs to be locked when live-reloading
|
||||||
textIdxMap map[string]int
|
trKeyToIdxMap map[string]int
|
||||||
|
|
||||||
defaultLang string
|
defaultLang string
|
||||||
}
|
}
|
||||||
|
|
||||||
func NewLocaleStore(isProd bool) *LocaleStore {
|
func NewLocaleStore(isProd bool) *LocaleStore {
|
||||||
ls := &LocaleStore{localeMap: make(map[string]*locale), textIdxMap: make(map[string]int)}
|
store := &LocaleStore{localeMap: make(map[string]*locale), trKeyToIdxMap: make(map[string]int)}
|
||||||
if !isProd {
|
if !isProd {
|
||||||
ls.reloadMu = &sync.Mutex{}
|
store.reloadMu = &sync.RWMutex{}
|
||||||
}
|
}
|
||||||
return ls
|
return store
|
||||||
}
|
}
|
||||||
|
|
||||||
// AddLocaleByIni adds locale by ini into the store
|
// AddLocaleByIni adds locale by ini into the store
|
||||||
// if source is a string, then the file is loaded. in dev mode, the file can be live-reloaded
|
// if source is a string, then the file is loaded. In dev mode, this file will be checked for live-reloading
|
||||||
// if source is a []byte, then the content is used
|
// if source is a []byte, then the content is used
|
||||||
func (ls *LocaleStore) AddLocaleByIni(langName, langDesc string, source interface{}) error {
|
// Note: this is not concurrent safe
|
||||||
if _, ok := ls.localeMap[langName]; ok {
|
func (store *LocaleStore) AddLocaleByIni(langName, langDesc string, source interface{}) error {
|
||||||
|
if _, ok := store.localeMap[langName]; ok {
|
||||||
return ErrLocaleAlreadyExist
|
return ErrLocaleAlreadyExist
|
||||||
}
|
}
|
||||||
|
|
||||||
lc := &locale{store: ls, langName: langName}
|
l := &locale{store: store, langName: langName}
|
||||||
if fileName, ok := source.(string); ok {
|
if store.reloadMu != nil {
|
||||||
lc.sourceFileName = fileName
|
l.reloadMu = &sync.RWMutex{}
|
||||||
lc.sourceFileInfo, _ = os.Stat(fileName) // live-reload only works for regular files. the error can be ignored
|
l.reloadMu.Lock() // Arguably this is not necessary as AddLocaleByIni isn't concurrent safe - but for consistency we do this
|
||||||
|
defer l.reloadMu.Unlock()
|
||||||
}
|
}
|
||||||
|
|
||||||
ls.langNames = append(ls.langNames, langName)
|
if fileName, ok := source.(string); ok {
|
||||||
ls.langDescs = append(ls.langDescs, langDesc)
|
l.sourceFileName = fileName
|
||||||
ls.localeMap[lc.langName] = lc
|
l.sourceFileInfo, _ = os.Stat(fileName) // live-reload only works for regular files. the error can be ignored
|
||||||
|
}
|
||||||
|
|
||||||
return ls.reloadLocaleByIni(langName, source)
|
var err error
|
||||||
|
l.idxToMsgMap, err = store.readIniToIdxToMsgMap(source)
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
store.langNames = append(store.langNames, langName)
|
||||||
|
store.langDescs = append(store.langDescs, langDesc)
|
||||||
|
|
||||||
|
store.localeMap[l.langName] = l
|
||||||
|
|
||||||
|
return nil
|
||||||
}
|
}
|
||||||
|
|
||||||
func (ls *LocaleStore) reloadLocaleByIni(langName string, source interface{}) error {
|
// readIniToIdxToMsgMap will read a provided ini and creates an idxToMsgMap
|
||||||
|
func (store *LocaleStore) readIniToIdxToMsgMap(source interface{}) (map[int]string, error) {
|
||||||
iniFile, err := ini.LoadSources(ini.LoadOptions{
|
iniFile, err := ini.LoadSources(ini.LoadOptions{
|
||||||
IgnoreInlineComment: true,
|
IgnoreInlineComment: true,
|
||||||
UnescapeValueCommentSymbols: true,
|
UnescapeValueCommentSymbols: true,
|
||||||
}, source)
|
}, source)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
return fmt.Errorf("unable to load ini: %w", err)
|
return nil, fmt.Errorf("unable to load ini: %w", err)
|
||||||
}
|
}
|
||||||
iniFile.BlockMode = false
|
iniFile.BlockMode = false
|
||||||
|
|
||||||
lc := ls.localeMap[langName]
|
idxToMsgMap := make(map[int]string)
|
||||||
lc.textMap = make(map[int]string)
|
|
||||||
|
if store.reloadMu != nil {
|
||||||
|
store.reloadMu.Lock()
|
||||||
|
defer store.reloadMu.Unlock()
|
||||||
|
}
|
||||||
|
|
||||||
for _, section := range iniFile.Sections() {
|
for _, section := range iniFile.Sections() {
|
||||||
for _, key := range section.Keys() {
|
for _, key := range section.Keys() {
|
||||||
|
|
||||||
var trKey string
|
var trKey string
|
||||||
if section.Name() == "" || section.Name() == "DEFAULT" {
|
if section.Name() == "" || section.Name() == "DEFAULT" {
|
||||||
trKey = key.Name()
|
trKey = key.Name()
|
||||||
} else {
|
} else {
|
||||||
trKey = section.Name() + "." + key.Name()
|
trKey = section.Name() + "." + key.Name()
|
||||||
}
|
}
|
||||||
textIdx, ok := ls.textIdxMap[trKey]
|
|
||||||
|
// Instead of storing the key strings in multiple different maps we compute a idx which will act as numeric code for key
|
||||||
|
// This reduces the size of the locale idxToMsgMaps
|
||||||
|
idx, ok := store.trKeyToIdxMap[trKey]
|
||||||
if !ok {
|
if !ok {
|
||||||
textIdx = len(ls.textIdxMap)
|
idx = len(store.trKeyToIdxMap)
|
||||||
ls.textIdxMap[trKey] = textIdx
|
store.trKeyToIdxMap[trKey] = idx
|
||||||
}
|
}
|
||||||
lc.textMap[textIdx] = key.Value()
|
idxToMsgMap[idx] = key.Value()
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
iniFile = nil
|
iniFile = nil
|
||||||
return nil
|
return idxToMsgMap, nil
|
||||||
}
|
}
|
||||||
|
|
||||||
func (ls *LocaleStore) HasLang(langName string) bool {
|
func (store *LocaleStore) idxForTrKey(trKey string) (int, bool) {
|
||||||
_, ok := ls.localeMap[langName]
|
if store.reloadMu != nil {
|
||||||
|
store.reloadMu.RLock()
|
||||||
|
defer store.reloadMu.RUnlock()
|
||||||
|
}
|
||||||
|
idx, ok := store.trKeyToIdxMap[trKey]
|
||||||
|
return idx, ok
|
||||||
|
}
|
||||||
|
|
||||||
|
// HasLang reports if a language is available in the store
|
||||||
|
func (store *LocaleStore) HasLang(langName string) bool {
|
||||||
|
_, ok := store.localeMap[langName]
|
||||||
return ok
|
return ok
|
||||||
}
|
}
|
||||||
|
|
||||||
func (ls *LocaleStore) ListLangNameDesc() (names, desc []string) {
|
// ListLangNameDesc reports if a language available in the store
|
||||||
return ls.langNames, ls.langDescs
|
func (store *LocaleStore) ListLangNameDesc() (names, desc []string) {
|
||||||
|
return store.langNames, store.langDescs
|
||||||
}
|
}
|
||||||
|
|
||||||
// SetDefaultLang sets default language as a fallback
|
// SetDefaultLang sets default language as a fallback
|
||||||
func (ls *LocaleStore) SetDefaultLang(lang string) {
|
func (store *LocaleStore) SetDefaultLang(lang string) {
|
||||||
ls.defaultLang = lang
|
store.defaultLang = lang
|
||||||
}
|
}
|
||||||
|
|
||||||
// Tr translates content to target language. fall back to default language.
|
// Tr translates content to target language. fall back to default language.
|
||||||
func (ls *LocaleStore) Tr(lang, trKey string, trArgs ...interface{}) string {
|
func (store *LocaleStore) Tr(lang, trKey string, trArgs ...interface{}) string {
|
||||||
l, ok := ls.localeMap[lang]
|
l, ok := store.localeMap[lang]
|
||||||
if !ok {
|
if !ok {
|
||||||
l, ok = ls.localeMap[ls.defaultLang]
|
l, ok = store.localeMap[store.defaultLang]
|
||||||
}
|
}
|
||||||
|
|
||||||
if ok {
|
if ok {
|
||||||
return l.Tr(trKey, trArgs...)
|
return l.Tr(trKey, trArgs...)
|
||||||
}
|
}
|
||||||
return trKey
|
return trKey
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// reloadIfNeeded will check if the locale needs to be reloaded
|
||||||
|
// this function will assume that the l.reloadMu has been RLocked if it already exists
|
||||||
|
func (l *locale) reloadIfNeeded() {
|
||||||
|
if l.reloadMu == nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
now := time.Now()
|
||||||
|
if now.Sub(l.lastReloadCheckTime) < time.Second || l.sourceFileInfo == nil || l.sourceFileName == "" {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
l.reloadMu.RUnlock()
|
||||||
|
l.reloadMu.Lock() // (NOTE: a pre-emption can occur between these two locks so we need to recheck)
|
||||||
|
defer l.reloadMu.RLock()
|
||||||
|
defer l.reloadMu.Unlock()
|
||||||
|
|
||||||
|
if now.Sub(l.lastReloadCheckTime) < time.Second || l.sourceFileInfo == nil || l.sourceFileName == "" {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
l.lastReloadCheckTime = now
|
||||||
|
sourceFileInfo, err := os.Stat(l.sourceFileName)
|
||||||
|
if err != nil || sourceFileInfo.ModTime().Equal(l.sourceFileInfo.ModTime()) {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
idxToMsgMap, err := l.store.readIniToIdxToMsgMap(l.sourceFileName)
|
||||||
|
if err == nil {
|
||||||
|
l.idxToMsgMap = idxToMsgMap
|
||||||
|
} else {
|
||||||
|
log.Error("Unable to live-reload the locale file %q, err: %v", l.sourceFileName, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// We will set the sourceFileInfo to this file to prevent repeated attempts to re-load this broken file
|
||||||
|
l.sourceFileInfo = sourceFileInfo
|
||||||
|
}
|
||||||
|
|
||||||
// Tr translates content to locale language. fall back to default language.
|
// Tr translates content to locale language. fall back to default language.
|
||||||
func (l *locale) Tr(trKey string, trArgs ...interface{}) string {
|
func (l *locale) Tr(trKey string, trArgs ...interface{}) string {
|
||||||
if l.store.reloadMu != nil {
|
if l.reloadMu != nil {
|
||||||
l.store.reloadMu.Lock()
|
l.reloadMu.RLock()
|
||||||
defer l.store.reloadMu.Unlock()
|
defer l.reloadMu.RUnlock()
|
||||||
now := time.Now()
|
l.reloadIfNeeded()
|
||||||
if now.Sub(l.lastReloadCheckTime) >= time.Second && l.sourceFileInfo != nil && l.sourceFileName != "" {
|
|
||||||
l.lastReloadCheckTime = now
|
|
||||||
if sourceFileInfo, err := os.Stat(l.sourceFileName); err == nil && !sourceFileInfo.ModTime().Equal(l.sourceFileInfo.ModTime()) {
|
|
||||||
if err = l.store.reloadLocaleByIni(l.langName, l.sourceFileName); err == nil {
|
|
||||||
l.sourceFileInfo = sourceFileInfo
|
|
||||||
} else {
|
|
||||||
log.Error("unable to live-reload the locale file %q, err: %v", l.sourceFileName, err)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
msg, _ := l.tryTr(trKey, trArgs...)
|
msg, _ := l.tryTr(trKey, trArgs...)
|
||||||
return msg
|
return msg
|
||||||
}
|
}
|
||||||
|
|
||||||
func (l *locale) tryTr(trKey string, trArgs ...interface{}) (msg string, found bool) {
|
func (l *locale) tryTr(trKey string, trArgs ...interface{}) (msg string, found bool) {
|
||||||
trMsg := trKey
|
trMsg := trKey
|
||||||
textIdx, ok := l.store.textIdxMap[trKey]
|
|
||||||
|
// convert the provided trKey to a common idx from the store
|
||||||
|
idx, ok := l.store.idxForTrKey(trKey)
|
||||||
|
|
||||||
if ok {
|
if ok {
|
||||||
if msg, found = l.textMap[textIdx]; found {
|
if msg, found = l.idxToMsgMap[idx]; found {
|
||||||
trMsg = msg // use current translation
|
trMsg = msg // use the translation that we have found
|
||||||
} else if l.langName != l.store.defaultLang {
|
} else if l.langName != l.store.defaultLang {
|
||||||
|
// No translation available in our current language... fallback to the default language
|
||||||
|
|
||||||
|
// Attempt to get the default language from the locale store
|
||||||
if def, ok := l.store.localeMap[l.store.defaultLang]; ok {
|
if def, ok := l.store.localeMap[l.store.defaultLang]; ok {
|
||||||
return def.tryTr(trKey, trArgs...)
|
|
||||||
|
if def.reloadMu != nil {
|
||||||
|
def.reloadMu.RLock()
|
||||||
|
def.reloadIfNeeded()
|
||||||
|
}
|
||||||
|
if msg, found = def.idxToMsgMap[idx]; found {
|
||||||
|
trMsg = msg // use the translation that we have found
|
||||||
|
}
|
||||||
|
if def.reloadMu != nil {
|
||||||
|
def.reloadMu.RUnlock()
|
||||||
|
}
|
||||||
}
|
}
|
||||||
} else if !setting.IsProd {
|
|
||||||
log.Error("missing i18n translation key: %q", trKey)
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if len(trArgs) > 0 {
|
if !found && !setting.IsProd {
|
||||||
fmtArgs := make([]interface{}, 0, len(trArgs))
|
log.Error("missing i18n translation key: %q", trKey)
|
||||||
for _, arg := range trArgs {
|
}
|
||||||
val := reflect.ValueOf(arg)
|
|
||||||
if val.Kind() == reflect.Slice {
|
if len(trArgs) == 0 {
|
||||||
// before, it can accept Tr(lang, key, a, [b, c], d, [e, f]) as Sprintf(msg, a, b, c, d, e, f), it's an unstable behavior
|
return trMsg, found
|
||||||
// now, we restrict the strange behavior and only support:
|
}
|
||||||
// 1. Tr(lang, key, [slice-items]) as Sprintf(msg, items...)
|
|
||||||
// 2. Tr(lang, key, args...) as Sprintf(msg, args...)
|
fmtArgs := make([]interface{}, 0, len(trArgs))
|
||||||
if len(trArgs) == 1 {
|
for _, arg := range trArgs {
|
||||||
for i := 0; i < val.Len(); i++ {
|
val := reflect.ValueOf(arg)
|
||||||
fmtArgs = append(fmtArgs, val.Index(i).Interface())
|
if val.Kind() == reflect.Slice {
|
||||||
}
|
// Previously, we would accept Tr(lang, key, a, [b, c], d, [e, f]) as Sprintf(msg, a, b, c, d, e, f)
|
||||||
} else {
|
// but this is an unstable behavior.
|
||||||
log.Error("the args for i18n shouldn't contain uncertain slices, key=%q, args=%v", trKey, trArgs)
|
//
|
||||||
break
|
// So we restrict the accepted arguments to either:
|
||||||
|
//
|
||||||
|
// 1. Tr(lang, key, [slice-items]) as Sprintf(msg, items...)
|
||||||
|
// 2. Tr(lang, key, args...) as Sprintf(msg, args...)
|
||||||
|
if len(trArgs) == 1 {
|
||||||
|
for i := 0; i < val.Len(); i++ {
|
||||||
|
fmtArgs = append(fmtArgs, val.Index(i).Interface())
|
||||||
}
|
}
|
||||||
} else {
|
} else {
|
||||||
fmtArgs = append(fmtArgs, arg)
|
log.Error("the args for i18n shouldn't contain uncertain slices, key=%q, args=%v", trKey, trArgs)
|
||||||
|
break
|
||||||
}
|
}
|
||||||
|
} else {
|
||||||
|
fmtArgs = append(fmtArgs, arg)
|
||||||
}
|
}
|
||||||
return fmt.Sprintf(trMsg, fmtArgs...), found
|
|
||||||
}
|
}
|
||||||
return trMsg, found
|
|
||||||
|
return fmt.Sprintf(trMsg, fmtArgs...), found
|
||||||
}
|
}
|
||||||
|
|
||||||
// ResetDefaultLocales resets the current default locales
|
// ResetDefaultLocales resets the current default locales
|
||||||
|
Loading…
Reference in New Issue
Block a user