initial code repo

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

diff --git a/src/ceph/src/mon/CreatingPGs.h b/src/ceph/src/mon/CreatingPGs.h
new file mode 100644 (file)
index 0000000..4993510
--- /dev/null
+++ b/src/ceph/src/mon/CreatingPGs.h
@@ -0,0 +1,126 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <map>
+#include <set>
+#include "include/encoding.h"
+
+struct creating_pgs_t {
+  epoch_t last_scan_epoch = 0;
+
+  /// pgs we are currently creating
+  std::map<pg_t, std::pair<epoch_t, utime_t> > pgs;
+
+  struct create_info {
+    epoch_t created;
+    utime_t modified;
+    uint64_t start = 0;
+    uint64_t end = 0;
+    bool done() const {
+      return start >= end;
+    }
+    void encode(bufferlist& bl) const {
+      ::encode(created, bl);
+      ::encode(modified, bl);
+      ::encode(start, bl);
+      ::encode(end, bl);
+    }
+    void decode(bufferlist::iterator& p) {
+      ::decode(created, p);
+      ::decode(modified, p);
+      ::decode(start, p);
+      ::decode(end, p);
+    }
+  };
+
+  /// queue of pgs we still need to create (poolid -> <created, set of ps>)
+  map<int64_t,create_info> queue;
+
+  /// pools that exist in the osdmap for which at least one pg has been created
+  std::set<int64_t> created_pools;
+
+  bool create_pool(int64_t poolid, uint32_t pg_num,
+                  epoch_t created, utime_t modified) {
+    if (created_pools.count(poolid) == 0) {
+      auto& c = queue[poolid];
+      c.created = created;
+      c.modified = modified;
+      c.end = pg_num;
+      created_pools.insert(poolid);
+      return true;
+    } else {
+      return false;
+    }
+  }
+  unsigned remove_pool(int64_t removed_pool) {
+    const unsigned total = pgs.size();
+    auto first = pgs.lower_bound(pg_t{0, (uint64_t)removed_pool});
+    auto last = pgs.lower_bound(pg_t{0, (uint64_t)removed_pool + 1});
+    pgs.erase(first, last);
+    created_pools.erase(removed_pool);
+    queue.erase(removed_pool);
+    return total - pgs.size();
+  }
+  void encode(bufferlist& bl) const {
+    ENCODE_START(2, 1, bl);
+    ::encode(last_scan_epoch, bl);
+    ::encode(pgs, bl);
+    ::encode(created_pools, bl);
+    ::encode(queue, bl);
+    ENCODE_FINISH(bl);
+  }
+  void decode(bufferlist::iterator& bl) {
+    DECODE_START(2, bl);
+    ::decode(last_scan_epoch, bl);
+    ::decode(pgs, bl);
+    ::decode(created_pools, bl);
+    if (struct_v >= 2)
+      ::decode(queue, bl);
+    DECODE_FINISH(bl);
+  }
+  void dump(ceph::Formatter *f) const {
+    f->dump_unsigned("last_scan_epoch", last_scan_epoch);
+    f->open_array_section("creating_pgs");
+    for (auto& pg : pgs) {
+      f->open_object_section("pg");
+      f->dump_stream("pgid") << pg.first;
+      f->dump_unsigned("epoch", pg.second.first);
+      f->dump_stream("ctime") << pg.second.second;
+      f->close_section();
+    }
+    f->close_section();
+    f->open_array_section("queue");
+    for (auto& p : queue) {
+      f->open_object_section("pool");
+      f->dump_unsigned("pool", p.first);
+      f->dump_unsigned("created", p.second.created);
+      f->dump_stream("modified") << p.second.modified;
+      f->dump_unsigned("ps_start", p.second.start);
+      f->dump_unsigned("ps_end", p.second.end);
+      f->close_section();
+    }
+    f->close_section();
+    f->open_array_section("created_pools");
+    for (auto pool : created_pools) {
+      f->dump_unsigned("pool", pool);
+    }
+    f->close_section();
+  }
+  static void generate_test_instances(list<creating_pgs_t*>& o) {
+    auto c = new creating_pgs_t;
+    c->last_scan_epoch = 17;
+    c->pgs.emplace(pg_t{42, 2}, make_pair(31, utime_t{891, 113}));
+    c->pgs.emplace(pg_t{44, 2}, make_pair(31, utime_t{891, 113}));
+    c->created_pools = {0, 1};
+    o.push_back(c);
+    c = new creating_pgs_t;
+    c->last_scan_epoch = 18;
+    c->pgs.emplace(pg_t{42, 3}, make_pair(31, utime_t{891, 113}));
+    c->created_pools = {};
+    o.push_back(c);
+  }
+};
+WRITE_CLASS_ENCODER(creating_pgs_t::create_info);
+WRITE_CLASS_ENCODER(creating_pgs_t);