1 files changed, 95 insertions, 0 deletions
diff --git a/src/messages/MExportDirPrep.h b/src/messages/MExportDirPrep.h
new file mode 100644
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+++ b/src/messages/MExportDirPrep.h
@@ -0,0 +1,95 @@
+// -*- 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 CEPH_MEXPORTDIRPREP_H
+#define CEPH_MEXPORTDIRPREP_H
+
+#include "include/types.h"
+#include "messages/MMDSOp.h"
+
+class MExportDirPrep final : public MMDSOp {
+private:
+  static constexpr int HEAD_VERSION = 1;
+  static constexpr int COMPAT_VERSION = 1;
+
+  dirfrag_t dirfrag;
+public:
+  ceph::buffer::list basedir;
+  std::list<dirfrag_t> bounds;
+  std::list<ceph::buffer::list> traces;
+private:
+  std::set<mds_rank_t> bystanders;
+  bool b_did_assim = false;
+
+public:
+  dirfrag_t get_dirfrag() const { return dirfrag; }
+  const std::list<dirfrag_t>& get_bounds() const { return bounds; }
+  const std::set<mds_rank_t> &get_bystanders() const { return bystanders; }
+
+  bool did_assim() const { return b_did_assim; }
+  void mark_assim() { b_did_assim = true; }
+
+protected:
+  MExportDirPrep() = default;
+  MExportDirPrep(dirfrag_t df, uint64_t tid) :
+    MMDSOp{MSG_MDS_EXPORTDIRPREP, HEAD_VERSION, COMPAT_VERSION},
+    dirfrag(df)
+  {
+    set_tid(tid);
+  }
+  ~MExportDirPrep() final {}
+
+public:
+  std::string_view get_type_name() const override { return "ExP"; }
+  void print(std::ostream& o) const override {
+    o << "export_prep(" << dirfrag << ")";
+  }
+
+  void add_bound(dirfrag_t df) {
+    bounds.push_back( df );
+  }
+  void add_trace(ceph::buffer::list& bl) {
+    traces.push_back(bl);
+  }
+  void add_bystander(mds_rank_t who) {
+    bystanders.insert(who);
+  }
+
+  void decode_payload() override {
+    using ceph::decode;
+    auto p = payload.cbegin();
+    decode(dirfrag, p);
+    decode(basedir, p);
+    decode(bounds, p);
+    decode(traces, p);
+    decode(bystanders, p);
+  }
+
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    encode(dirfrag, payload);
+    encode(basedir, payload);
+    encode(bounds, payload);
+    encode(traces, payload);
+    encode(bystanders, payload);
+  }
+private:
+  template<class T, typename... Args>
+  friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+  template<class T, typename... Args>
+  friend MURef<T> crimson::make_message(Args&&... args);
+};
+
+#endif