storage/nfs: use the libnfs async API

Share the NFS connection with the NFS input plugin.

1 files changed, 84 insertions, 0 deletions

diff --git a/src/lib/nfs/Blocking.cxx b/src/lib/nfs/Blocking.cxx
new file mode 100644
index 000000000..5f769c408
--- /dev/null
+++ b/src/lib/nfs/Blocking.cxx
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Blocking.hxx"
+#include "Connection.hxx"
+#include "event/Call.hxx"
+
+bool
+BlockingNfsOperation::Run(Error &_error)
+{
+	/* subscribe to the connection, which will invoke either
+	   OnNfsConnectionReady() or OnNfsConnectionFailed() */
+	BlockingCall(connection.GetEventLoop(),
+		    [this](){ connection.AddLease(*this); });
+
+	/* wait for completion */
+	LockWaitFinished();
+
+	/* check for error */
+	if (error.IsDefined()) {
+		_error = std::move(error);
+		return false;
+	}
+
+	return true;
+}
+
+void
+BlockingNfsOperation::OnNfsConnectionReady()
+{
+	if (!Start(error)) {
+		connection.RemoveLease(*this);
+		LockSetFinished();
+	}
+}
+
+void
+BlockingNfsOperation::OnNfsConnectionFailed(const Error &_error)
+{
+	error.Set(_error);
+	LockSetFinished();
+}
+
+void
+BlockingNfsOperation::OnNfsConnectionDisconnected(const Error &_error)
+{
+	error.Set(_error);
+	LockSetFinished();
+}
+
+void
+BlockingNfsOperation::OnNfsCallback(unsigned status, void *data)
+{
+	connection.RemoveLease(*this);
+
+	HandleResult(status, data);
+	LockSetFinished();
+}
+
+void
+BlockingNfsOperation::OnNfsError(Error &&_error)
+{
+	connection.RemoveLease(*this);
+
+	error = std::move(_error);
+	LockSetFinished();
+}