filestore, not fakestore. add os/ dir

1 files changed, 49 insertions, 0 deletions

diff --git a/src/os/Journal.h b/src/os/Journal.h
new file mode 100644
index 00000000000..a2aff3130f6
--- /dev/null
+++ b/src/os/Journal.h
@@ -0,0 +1,49 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+
+#ifndef __EBOFS_JOURNAL_H
+#define __EBOFS_JOURNAL_H
+
+#include "include/buffer.h"
+#include "include/Context.h"
+#include "common/Finisher.h"
+
+class Journal {
+protected:
+  __u64 fsid;
+  Finisher *finisher;
+
+public:
+  Journal(__u64 f, Finisher *fin) : fsid(f), finisher(fin) { }
+  virtual ~Journal() { }
+
+  virtual int create() = 0;
+  virtual int open(epoch_t epoch) = 0;
+  virtual void close() = 0;
+
+  // writes
+  virtual bool is_writeable() = 0;
+  virtual void make_writeable() = 0;
+  virtual void submit_entry(epoch_t epoch, bufferlist& e, Context *oncommit) = 0;
+  virtual void commit_epoch_start(epoch_t) = 0;  // mark epoch boundary
+  virtual void commit_epoch_finish(epoch_t) = 0; // mark prior epoch as committed (we can expire)
+  virtual bool read_entry(bufferlist& bl, epoch_t &e) = 0;
+  virtual bool is_full() = 0;
+
+  // reads/recovery
+  
+};
+
+#endif