From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 21 Apr 2024 13:54:28 +0200
Subject: Adding upstream version 18.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/rgw/driver/dbstore/dbstore_mgr.cc | 140 ++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 src/rgw/driver/dbstore/dbstore_mgr.cc

(limited to 'src/rgw/driver/dbstore/dbstore_mgr.cc')

diff --git a/src/rgw/driver/dbstore/dbstore_mgr.cc b/src/rgw/driver/dbstore/dbstore_mgr.cc
new file mode 100644
index 000000000..6835f526b
--- /dev/null
+++ b/src/rgw/driver/dbstore/dbstore_mgr.cc
@@ -0,0 +1,140 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "dbstore_mgr.h"
+#include "common/dbstore_log.h"
+
+#include <filesystem>
+
+static constexpr auto dout_subsys = ceph_subsys_rgw;
+
+using namespace std;
+
+
+/* Given a tenant, find and return the DBStore handle.
+ * If not found and 'create' set to true, create one
+ * and return
+ */
+DB *DBStoreManager::getDB (string tenant, bool create)
+{
+  map<string, DB*>::iterator iter;
+  DB *dbs = nullptr;
+  pair<map<string, DB*>::iterator,bool> ret;
+
+  if (tenant.empty())
+    return default_db;
+
+  if (DBStoreHandles.empty())
+    goto not_found;
+
+  iter = DBStoreHandles.find(tenant);
+
+  if (iter != DBStoreHandles.end())
+    return iter->second;
+
+not_found:
+  if (!create)
+    return nullptr;
+
+  dbs = createDB(tenant);
+
+  return dbs;
+}
+
+/* Create DBStore instance */
+DB *DBStoreManager::createDB(std::string tenant) {
+  DB *dbs = nullptr;
+  pair<map<string, DB*>::iterator,bool> ret;
+  const auto& db_path = g_conf().get_val<std::string>("dbstore_db_dir");
+  const auto& db_name = g_conf().get_val<std::string>("dbstore_db_name_prefix") + "-" + tenant;
+
+  auto db_full_path = std::filesystem::path(db_path) / db_name;
+  ldout(cct, 0) << "DB initialization full db_path("<<db_full_path<<")" << dendl;
+
+  /* Create the handle */
+#ifdef SQLITE_ENABLED
+  dbs = new SQLiteDB(db_full_path.string(), cct);
+#else
+  dbs = new DB(db_full_path.string(), cct);
+#endif
+
+  /* API is DB::Initialize(string logfile, int loglevel);
+   * If none provided, by default write in to dbstore.log file
+   * created in current working directory with loglevel L_EVENT.
+   * XXX: need to align these logs to ceph location
+   */
+  if (dbs->Initialize("", -1) < 0) {
+    ldout(cct, 0) << "DB initialization failed for tenant("<<tenant<<")" << dendl;
+
+    delete dbs;
+    return nullptr;
+  }
+
+  /* XXX: Do we need lock to protect this map?
+  */
+  ret = DBStoreHandles.insert(pair<string, DB*>(tenant, dbs));
+
+  /*
+   * Its safe to check for already existing entry (just
+   * incase other thread raced and created the entry)
+   */
+  if (ret.second == false) {
+    /* Entry already created by another thread */
+    delete dbs;
+
+    dbs = ret.first->second;
+  }
+
+  return dbs;
+}
+
+void DBStoreManager::deleteDB(string tenant) {
+  map<string, DB*>::iterator iter;
+  DB *dbs = nullptr;
+
+  if (tenant.empty() || DBStoreHandles.empty())
+    return;
+
+  /* XXX: Check if we need to perform this operation under a lock */
+  iter = DBStoreHandles.find(tenant);
+
+  if (iter == DBStoreHandles.end())
+    return;
+
+  dbs = iter->second;
+
+  DBStoreHandles.erase(iter);
+  dbs->Destroy(dbs->get_def_dpp());
+  delete dbs;
+
+  return;
+}
+
+void DBStoreManager::deleteDB(DB *dbs) {
+  if (!dbs)
+    return;
+
+  (void)deleteDB(dbs->getDBname());
+}
+
+
+void DBStoreManager::destroyAllHandles(){
+  map<string, DB*>::iterator iter;
+  DB *dbs = nullptr;
+
+  if (DBStoreHandles.empty())
+    return;
+
+  for (iter = DBStoreHandles.begin(); iter != DBStoreHandles.end();
+      ++iter) {
+    dbs = iter->second;
+    dbs->Destroy(dbs->get_def_dpp());
+    delete dbs;
+  }
+
+  DBStoreHandles.clear();
+
+  return;
+}
+
+
-- 
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