public async Task <Response> QueryAsync(Type type, string payload)
{
if (!token.HasValue)
{
token.Value = await interop.LoadTokenAsync();
EnsureAuthorization();
}
string url = queryMapper.FindUrlByType(type);
if (url != null)
{
try
{
HttpResponseMessage response = await http.PostAsync($"/api/query/{url}", new StringContent(payload, Encoding.UTF8, "text/json"));
if (response.StatusCode == HttpStatusCode.OK)
{
string responseContent = await response.Content.ReadAsStringAsync();
log.Debug($"Response: '{responseContent}'.");
return(json.Deserialize <Response>(responseContent));
}
else if (response.StatusCode == HttpStatusCode.Unauthorized)
{
ClearAuthorization();
throw new UnauthorizedAccessException();
}
else if (response.StatusCode == HttpStatusCode.InternalServerError)
{
throw new InternalServerException();
}
else
{
throw Ensure.Exception.InvalidOperation($"Generic HTTP error: {response.StatusCode}.");
}
}
catch (Exception e)
{
if (e is HttpRequestException)
{
e = new ServerNotRespondingException(e);
}
exceptionHandler.Handle(e);
throw;
}
}
else
{
return(await http.PostJsonAsync <Response>($"/api/query", CreateRequest(type, payload)));
}
}
private Exception ProcessHttpException(Exception e)
{
log.Debug($"Exception while invoking HTTP request, type: '{e.GetType().FullName}', message: '{e.Message}'.");
if (e.Message == "TypeError: Failed to fetch" || e is HttpRequestException)
{
e = new ServerNotRespondingException(e);
}
exceptionHandler.Handle(e);
return(e);
}
private void OnServerNotRespondingException(ServerNotRespondingException e)
{
log.Debug($"Catch '{nameof(ServerNotRespondingException)}'.");
isServerException = true;
RaiseChanged();
}