initial code repo

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

diff --git a/src/ceph/src/mon/PGStatService.h b/src/ceph/src/mon/PGStatService.h
new file mode 100644 (file)
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+++ b/src/ceph/src/mon/PGStatService.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) 2017 Greg Farnum/Red Hat <gfarnum@redhat.com>
+ *
+ * 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.
+ *
+ */
+
+/**
+ * This service abstracts out the specific implementation providing information
+ * needed by parts of the Monitor based around PGStats. This'll make for
+ * an easier transition from the PGMonitor-based queries where we handle
+ * PGStats directly, to where we are getting information passed in from
+ * the Ceph Manager.
+ *
+ * This initial implementation cheats by wrapping a PGMap so we don't need
+ * to reimplement everything in one go.
+ */
+
+#ifndef CEPH_PGSTATSERVICE_H
+#define CEPH_PGSTATSERVICE_H
+
+struct creating_pgs_t;
+
+class PGStatService {
+public:
+  PGStatService() {}
+  virtual ~PGStatService() {}
+  // FIXME: Kill this once we rip out PGMonitor post-luminous
+  /** returns true if the underlying data is readable. Always true
+   *  post-luminous, but not when we are redirecting to the PGMonitor
+   */
+  virtual bool is_readable() const { return true; }
+  virtual const pool_stat_t* get_pool_stat(int64_t poolid) const = 0;
+  virtual const osd_stat_t& get_osd_sum() const {
+    ceph_abort();
+  }
+  virtual const osd_stat_t *get_osd_stat(int osd) const {
+    ceph_abort();
+  }
+  virtual const mempool::pgmap::unordered_map<int32_t,osd_stat_t>& get_osd_stat() const {
+    ceph_abort();
+  }
+  virtual float get_full_ratio() const {
+    ceph_abort();
+  }
+  virtual float get_nearfull_ratio() const {
+    ceph_abort();
+  }
+  virtual bool have_creating_pgs() const {
+    ceph_abort();
+  }
+  virtual bool is_creating_pg(pg_t pgid) const {
+    ceph_abort();
+  }
+  virtual epoch_t get_min_last_epoch_clean() const {
+    ceph_abort();
+  }
+
+  virtual bool have_full_osds() const {
+    ceph_abort();
+  }
+  virtual bool have_nearfull_osds() const {
+    ceph_abort();
+  }
+
+  virtual size_t get_num_pg_by_osd(int osd) const {
+    ceph_abort();
+  }
+  virtual ceph_statfs get_statfs(OSDMap &osd_map,
+                                boost::optional<int64_t> data_pool) const = 0;
+  virtual void print_summary(Formatter *f, ostream *out) const = 0;
+  virtual void dump_info(Formatter *f) const = 0;
+  virtual void dump_fs_stats(stringstream *ss, Formatter *f, bool verbose) const = 0;
+  virtual void dump_pool_stats(const OSDMap& osdm, stringstream *ss, Formatter *f,
+                              bool verbose) const = 0;
+
+  virtual int process_pg_command(const string& prefix,
+                                const map<string,cmd_vartype>& cmdmap,
+                                const OSDMap& osdmap,
+                                Formatter *f,
+                                stringstream *ss,
+                                bufferlist *odata) const {
+    ceph_abort();
+  }
+
+};
+
+class MonPGStatService : virtual public PGStatService {
+public:
+  MonPGStatService() : PGStatService() {}
+  virtual ~MonPGStatService() {}
+  /**
+   * For upgrades. If the PGMap has newer data than the monitor's new
+   * creating_pgs (scan_epoch), insert them into the passed pending_creates.
+   */
+  virtual unsigned maybe_add_creating_pgs(epoch_t scan_epoch,
+     const mempool::osdmap::map<int64_t,pg_pool_t>& pools,
+     creating_pgs_t *pending_creates) const {
+    ceph_abort();
+    return 0;
+  }
+  /**
+   * For upgrades. If some PGs are created before all OSDs are luminous
+   * and start sending MOSDPGCreated, we need to be sync with pgmap
+   *
+   */
+  virtual void maybe_trim_creating_pgs(creating_pgs_t *creates) const {
+    ceph_abort();
+  }
+  virtual int reweight_by_utilization(const OSDMap &osd_map,
+                             int oload,
+                             double max_changef,
+                             int max_osds,
+                             bool by_pg, const set<int64_t> *pools,
+                             bool no_increasing,
+                             mempool::osdmap::map<int32_t, uint32_t>* new_weights,
+                             std::stringstream *ss,
+                             std::string *out_str,
+                                     Formatter *f) const {
+    ceph_abort();
+  }
+};
+
+#endif