/// <summary>
/// Orders the English version of sample queries and deserializes the file contents
/// </summary>
/// <param name="fileContents">The json files to be deserialized.</param>
/// <param name="locale">The language code for the preferred localized file.</param>
/// <returns>The deserialized instance of a <see cref="SampleQueriesList"/>.</returns>
private SampleQueriesList DeserializeSamplesList(string fileContents, string locale)
{
/* Current business process only supports ordering of the English
* translation of the sample queries.
*/
bool orderSamples = locale.Equals("en-us", StringComparison.OrdinalIgnoreCase);
SampleQueriesList sampleQueriesList = SamplesService.DeserializeSampleQueriesList(fileContents, orderSamples);
return(sampleQueriesList);
}
/// <summary>
/// Fetches the sample queries from the cache or a JSON file and returns a deserialized instance of a
/// <see cref="SampleQueriesList"/> from this.
/// </summary>
/// <param name="locale">The language code for the preferred localized file.</param>
/// <returns>The deserialized instance of a <see cref="SampleQueriesList"/>.</returns>
public async Task <SampleQueriesList> FetchSampleQueriesListAsync(string locale)
{
// Fetch cached sample queries
SampleQueriesList sampleQueriesList = await _samplesCache.GetOrCreateAsync(locale, cacheEntry =>
{
// Localized copy of samples is to be seeded by only one executing thread.
lock (_samplesLock)
{
/* Check whether a previous thread already seeded an
* instance of the localized samples during the lock.
*/
var lockedLocale = locale;
var seededSampleQueriesList = _samplesCache?.Get <SampleQueriesList>(lockedLocale);
if (seededSampleQueriesList != null)
{
return(Task.FromResult(seededSampleQueriesList));
}
cacheEntry.AbsoluteExpirationRelativeToNow = TimeSpan.FromHours(_defaultRefreshTimeInHours);
// Fetch the requisite sample path source based on the locale
string queriesFilePathSource =
FileServiceHelper.GetLocalizedFilePathSource(_sampleQueriesContainerName, _sampleQueriesBlobName, lockedLocale);
// Get the file contents from source
string jsonFileContents = _fileUtility.ReadFromFile(queriesFilePathSource).GetAwaiter().GetResult();
/* Current business process only supports ordering of the English
* translation of the sample queries.
*/
bool orderSamples = lockedLocale.Equals("en-us", StringComparison.OrdinalIgnoreCase);
// Return the list of the sample queries from the file contents
return(Task.FromResult(SamplesService.DeserializeSampleQueriesList(jsonFileContents, orderSamples)));
}
});
return(sampleQueriesList);
}
