public JObject GetTranslationDataForLanguage(string lang = null)
{
//read fallback localization json object first
var fallbackCacheKey = CacheKey.With(GetType(), "FallbackJson");
var result = _memoryCache.GetOrCreateExclusive(fallbackCacheKey, cacheEntry =>
{
//Add cache expiration token
cacheEntry.AddExpirationToken(LocalizationCacheRegion.CreateChangeToken());
return(InnerGetTranslationData(_options.FallbackLanguage));
});
if (lang != null && !lang.EqualsInvariant(_options.FallbackLanguage))
{
var cacheKey = CacheKey.With(GetType(), "RequestedLanguageJson", lang);
result = _memoryCache.GetOrCreateExclusive(cacheKey, cacheEntry =>
{
//Add cache expiration token
cacheEntry.AddExpirationToken(LocalizationCacheRegion.CreateChangeToken());
var langJson = InnerGetTranslationData(lang);
// Make another instance of fallback language to avoid corruption of it in the memory cache
result = (JObject)result.DeepClone();
// Need merge default and requested localization json to resulting object
result.Merge(langJson, new JsonMergeSettings {
MergeArrayHandling = MergeArrayHandling.Merge
});
return(result);
});
}
return(result);
}
public string[] GetListOfInstalledLanguages()
{
var cachekey = CacheKey.With(GetType(), nameof(GetListOfInstalledLanguages));
var result = _memoryCache.GetOrCreateExclusive(cachekey, cacheEntry =>
{
cacheEntry.AddExpirationToken(LocalizationCacheRegion.CreateChangeToken());
return(_providers.SelectMany(x => x.GetListOfInstalledLanguages()).Distinct().ToArray());
});
return(result);
}