initial code repo

[stor4nfv.git] / src / ceph / src / mon / MonmapMonitor.h

diff --git a/src/ceph/src/mon/MonmapMonitor.h b/src/ceph/src/mon/MonmapMonitor.h
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+// -*- 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) 2009 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.
+ * 
+ */
+
+/*
+ * The Monmap Monitor is used to track the monitors in the cluster.
+ */
+
+#ifndef CEPH_MONMAPMONITOR_H
+#define CEPH_MONMAPMONITOR_H
+
+#include <map>
+#include <set>
+
+using namespace std;
+
+#include "include/types.h"
+#include "msg/Messenger.h"
+
+#include "PaxosService.h"
+#include "MonMap.h"
+#include "MonitorDBStore.h"
+
+class MMonGetMap;
+class MMonMap;
+class MMonCommand;
+class MMonJoin;
+
+class MonmapMonitor : public PaxosService {
+ public:
+  MonmapMonitor(Monitor *mn, Paxos *p, const string& service_name)
+    : PaxosService(mn, p, service_name)
+  {
+  }
+  MonMap pending_map; //the pending map awaiting passage
+
+  void create_initial() override;
+
+  void update_from_paxos(bool *need_bootstrap) override;
+
+  void create_pending() override;
+
+  void encode_pending(MonitorDBStore::TransactionRef t) override;
+  // we always encode the full map; we have no use for full versions
+  void encode_full(MonitorDBStore::TransactionRef t) override { }
+
+  void on_active() override;
+  void apply_mon_features(const mon_feature_t& features);
+
+  void dump_info(Formatter *f);
+
+  bool preprocess_query(MonOpRequestRef op) override;
+  bool prepare_update(MonOpRequestRef op) override;
+
+  bool preprocess_join(MonOpRequestRef op);
+  bool prepare_join(MonOpRequestRef op);
+
+  bool preprocess_command(MonOpRequestRef op);
+  bool prepare_command(MonOpRequestRef op);
+
+  void get_health(list<pair<health_status_t,string> >& summary,
+                 list<pair<health_status_t,string> > *detail,
+                 CephContext *cct) const override;
+
+  int get_monmap(bufferlist &bl);
+
+  /*
+   * Since monitors are pretty
+   * important, this implementation will just write 0.0.
+   */
+  bool should_propose(double& delay) override;
+
+  void check_sub(Subscription *sub);
+
+private:
+  void check_subs();
+
+private:
+  bufferlist monmap_bl;
+};
+
+
+#endif