initial code repo

[stor4nfv.git] / src / ceph / src / rbd_replay / BufferReader.h

diff --git a/src/ceph/src/rbd_replay/BufferReader.h b/src/ceph/src/rbd_replay/BufferReader.h
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+++ b/src/ceph/src/rbd_replay/BufferReader.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RBD_REPLAY_BUFFER_READER_H
+#define CEPH_RBD_REPLAY_BUFFER_READER_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+
+namespace rbd_replay {
+
+class BufferReader {
+public:
+  static const size_t DEFAULT_MIN_BYTES = 1<<20;
+  static const size_t DEFAULT_MAX_BYTES = 1<<22;
+
+  BufferReader(int fd, size_t min_bytes = DEFAULT_MIN_BYTES,
+               size_t max_bytes = DEFAULT_MAX_BYTES);
+
+  int fetch(bufferlist::iterator **it);
+
+private:
+  int m_fd;
+  size_t m_min_bytes;
+  size_t m_max_bytes;
+  bufferlist m_bl;
+  bufferlist::iterator m_bl_it;
+  bool m_eof_reached;
+
+};
+
+} // namespace rbd_replay
+
+#endif // CEPH_RBD_REPLAY_BUFFER_READER_H