public IObservable <T> FetchData <T>(RestSettings <T> settigns)
{
return(Task.Run(async() =>
{
using (var httpResult = await _httpClient.SendAsync(settigns.RequestMessage))
{
var data = await httpResult.Content.ReadAsStringAsync();
var parsedData = settigns.Parser.Parse(data);
return parsedData;
}
}).ToObservable());
}
public async Task <T> SendAsync <T>(RestSettings <T> settigns,
Func <Tuple <T, DateTimeOffset?>, bool> fetchPredicate = null,
Action <T> beforeLoading = null,
Action <Exception> onError = null)
{
var key = Utility.Md5Calculator.ComputeMd5(settigns.RequestMessage.RequestUri.OriginalString);
bool?reload = null;
var cachedValue = default(T);
var createdItem = await BlobCache.LocalMachine.GetObjectCreatedAt <T>(key);
if (createdItem == null)
{
reload = fetchPredicate?.Invoke(Tuple.Create(default(T), createdItem)) ?? true;
}
else
{
cachedValue = await BlobCache.LocalMachine.GetObject <T>(key);
}
var value = cachedValue;
if (settigns.Mode == RequestAccessMode.Cache)
{
return(value);
}
reload = reload ?? fetchPredicate?.Invoke(Tuple.Create(value, createdItem)) ?? true;
if (reload.Value)
{
try
{
beforeLoading?.Invoke(cachedValue);
value = await FetchData(settigns);
}
catch (Exception ex)
{
value = cachedValue;
onError?.Invoke(ex);
}
await BlobCache.LocalMachine.InsertObject(key, value, DateTimeOffset.Now.AddDays(10));
}
return(value);
}
