public IObservable <Unit> Invalidate(string key)
{
lock (memoizedRequests)
{
if (disposed)
{
return(Observable.Throw <Unit>(new ObjectDisposedException("PersistentBlobCache")));
}
this.Log().Debug("Invalidating {0}", key);
memoizedRequests.Invalidate(key);
}
CacheIndexEntry dontcare;
CacheIndex.TryRemove(key, out dontcare);
var path = GetPathForKey(key);
var ret = Observable.Defer(() => filesystem.Delete(path))
.Catch <Unit, FileNotFoundException>(_ => Observable.Return(Unit.Default))
.Catch <Unit, IsolatedStorageException>(_ => Observable.Return(Unit.Default))
.Retry(2)
.Do(_ => actionTaken.OnNext(Unit.Default));
return(ret.Multicast(new AsyncSubject <Unit>()).PermaRef());
}
public void Invalidate(string key)
{
if (disposed)
{
throw new ObjectDisposedException("PersistentBlobCache");
}
Action deleteMe;
lock (MemoizedRequests)
{
log.Debug("Invalidating {0}", key);
MemoizedRequests.Invalidate(key);
CacheIndexEntry dontcare;
CacheIndex.TryRemove(key, out dontcare);
var path = GetPathForKey(key);
deleteMe = () =>
{
try
{
filesystem.Delete(path);
}
catch (FileNotFoundException ex) { log.Warn(ex); }
catch (IsolatedStorageException ex) { log.Warn(ex); }
actionTaken.OnNext(Unit.Default);
};
}
try
{
deleteMe.Retry(1);
}
catch (Exception ex)
{
log.Warn("Really can't delete key: " + key, ex);
}
}
