Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/src/mon/KVMonitor.h b/src/mon/KVMonitor.h
new file mode 100644
index 000000000..8171ad34f
--- /dev/null
+++ b/src/mon/KVMonitor.h
@@ -0,0 +1,69 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <optional>
+
+#include "mon/PaxosService.h"
+
+class MonSession;
+
+extern const std::string KV_PREFIX;
+
+class KVMonitor : public PaxosService
+{
+  version_t version = 0;
+  std::map<std::string,std::optional<ceph::buffer::list>> pending;
+
+  bool _have_prefix(const std::string &prefix);
+
+public:
+  KVMonitor(Monitor &m, Paxos &p, const std::string& service_name);
+
+  void init() override;
+
+  void get_store_prefixes(std::set<std::string>& s) const override;
+
+  bool preprocess_command(MonOpRequestRef op);
+  bool prepare_command(MonOpRequestRef op);
+  
+  bool preprocess_query(MonOpRequestRef op) override;
+  bool prepare_update(MonOpRequestRef op) override;
+
+  void create_initial() override;
+  void update_from_paxos(bool *need_bootstrap) override;
+  void create_pending() override;
+  void encode_pending(MonitorDBStore::TransactionRef t) override;
+  version_t get_trim_to() const override;
+
+  void encode_full(MonitorDBStore::TransactionRef t) override { }
+
+  void on_active() override;
+  void tick() override;
+
+  int validate_osd_destroy(const int32_t id, const uuid_d& uuid);
+  void do_osd_destroy(int32_t id, uuid_d& uuid);
+  int validate_osd_new(
+      const uuid_d& uuid,
+      const std::string& dmcrypt_key,
+      std::stringstream& ss);
+  void do_osd_new(const uuid_d& uuid, const std::string& dmcrypt_key);
+
+  void check_sub(MonSession *s);
+  void check_sub(Subscription *sub);
+  void check_all_subs();
+
+  bool maybe_send_update(Subscription *sub);
+
+
+  // used by other services to adjust kv content; note that callers MUST ensure that
+  // propose_pending() is called and a commit is forced to provide atomicity and
+  // proper subscriber notifications.
+  void enqueue_set(const std::string& key, bufferlist &v) {
+    pending[key] = v;
+  }
+  void enqueue_rm(const std::string& key) {
+    pending[key].reset();
+  }
+};