/// <summary>
/// Asynchronously reads the requested information from the cached JSON file and deserializes the response to the requested <typeparam name="TE">Type</typeparam>.
/// </summary>
/// <typeparam name="TE">Target type</typeparam>
/// <param name="cacheFile">Name for the cached response</param>
/// <returns>Cached object</returns>
public async Task <TE> ReadCacheAsync <TE>(string cacheFile)
{
if (string.IsNullOrEmpty(cacheFile))
{
return(default(TE));
}
using (await _jsonLock.ReaderLockAsync(cacheFile).ConfigureAwait(false))
return(ReadCacheInternal <TE>(cacheFile));
}
/// <summary>
/// Returns contents of a file <paramref name="downloadFile"/> downloaded earlier.
/// </summary>
/// <param name="downloadedFile">Target file name</param>
/// <returns>File contents</returns>
public async Task <byte[]> ReadDownloadedFileAsync(string downloadedFile)
{
if (!File.Exists(downloadedFile))
{
return(null);
}
using (await _fileLock.ReaderLockAsync(downloadedFile))
{
try
{
if (!File.Exists(downloadedFile))
{
return(null);
}
return(File.ReadAllBytes(downloadedFile));
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Warn("OnlineLibraries.Downloader: Exception when reading file {0} ({1})", downloadedFile, ex.Message);
return(null);
}
}
}