Public release of the DLU server code!

Have fun!

dMasterServer/ObjectIDManager.cpp

@@ -0,0 +1,71 @@
+#include "ObjectIDManager.h"
+
+// Custom Classes
+#include "Database.h"
+#include "dLogger.h"
+
+// Static Variables
+ObjectIDManager *ObjectIDManager::m_Address = nullptr;
+
+//! Initializes the manager
+void ObjectIDManager::Initialize(dLogger *logger) {
+    this->mLogger = logger;
+    this->currentPersistentID = 1;
+
+    try {
+        sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
+            "SELECT last_object_id FROM object_id_tracker");
+
+        sql::ResultSet *result = stmt->executeQuery();
+        auto next = result->next();
+
+        if (!next) {
+            sql::PreparedStatement *insertStmt = Database::CreatePreppedStmt(
+                "INSERT INTO object_id_tracker VALUES (1)");
+
+            insertStmt->execute();
+
+            delete insertStmt;
+
+            return;
+        }
+
+        while (next) {
+            this->currentPersistentID =
+                result->getInt(1) > 0 ? result->getInt(1) : 1;
+            next = result->next();
+        }
+
+        delete result;
+        delete stmt;
+    } catch (sql::SQLException &e) {
+        mLogger->Log("ObjectIDManager", "Unable to fetch max persistent object "
+                                        "ID in use. Defaulting to 1.\n");
+        mLogger->Log("ObjectIDManager", "SQL error: %s\n", e.what());
+        this->currentPersistentID = 1;
+    }
+}
+
+//! Generates a new persistent ID
+uint32_t ObjectIDManager::GeneratePersistentID(void) {
+    uint32_t toReturn = ++this->currentPersistentID;
+
+    // So we peroidically save our ObjID to the database:
+    if (toReturn % 25 == 0) { // TEMP: DISABLED FOR DEBUG / DEVELOPMENT!
+        sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
+            "UPDATE object_id_tracker SET last_object_id=?");
+        stmt->setUInt(1, toReturn);
+        stmt->execute();
+        delete stmt;
+    }
+
+    return toReturn;
+}
+
+void ObjectIDManager::SaveToDatabase() {
+    sql::PreparedStatement *stmt = Database::CreatePreppedStmt(
+        "UPDATE object_id_tracker SET last_object_id=?");
+    stmt->setUInt(1, currentPersistentID);
+    stmt->execute();
+    delete stmt;
+}