// At most one of LoadSync/LoadAsync may be called for any given
// LoadingValueReference.
T LoadSync(string key, LoadingValueReference <T> loading_value_reference,
CacheLoader <T> loader)
{
IFuture <T> loading_future = loading_value_reference.LoadFuture(key, loader);
return(GetUninterruptibly(key, loading_value_reference, loading_future));
}
IFuture <T> LoadAsync(string key,
LoadingValueReference <T> loading_value_reference, CacheLoader <T> loader)
{
IFuture <T> loading_future = loading_value_reference.LoadFuture(key, loader);
loading_future.AddListener(delegate() {
try {
T new_value = GetUninterruptibly(key, loading_value_reference,
loading_future);
// update loading future for the sake of other pending requests.
loading_value_reference.Set(new_value);
} catch (Exception exception) {
MustLogger.ForCurrentProcess.Warn("Exception thrown during refresh",
exception);
}
}, Executors.SameThreadExecutor());
return(loading_future);
}
