Core/Updates: Add an automatic database update system. Automatically detects new and edited sql updates through file lists and hashing. Detects renames, deletes and is able to create and auto import full databases. * cleanups in main.cpp of world & bnetserver * refactoring in DatabaseWorkerPool.h & MySQLConnection.cpp

Make sure you re-run cmake, because boost::iostreams was added as dependency.
Maybe you need to install libboost-iostreams1.55-dev on unix as well.

Import every update manual until (included) those INSERT IGNORE updates for each database.

Thanks DDuarte and Shauren for your amazing ideas, help and advises.

In hope that nobody gets a "Your database structure is not up to date..." anymore ,-)

(cherry picked from commit 352012e53173372ebc82898e1b6854c983b01b25)
(cherry picked from commit 1f7f9feafc3f5017d617634ae993d2cdf4430920)

For 3.3.5:
* Synchronized ConfigureBoost.cmake with 6.x, libboost-filesystem1.55-dev also added as dependency!

Signed-off-by: Naios <naios-dev@live.de>
Signed-off-by: Nayd <dnpd.dd@gmail.com>

1 files changed, 191 insertions, 0 deletions

diff --git a/src/server/shared/Database/DatabaseLoader.cpp b/src/server/shared/Database/DatabaseLoader.cpp
new file mode 100644
index 00000000000..36ee4b12c83
--- /dev/null
+++ b/src/server/shared/Database/DatabaseLoader.cpp
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "DatabaseLoader.h"
+#include "DBUpdater.h"
+#include "Config.h"
+
+#include <mysqld_error.h>
+
+DatabaseLoader::DatabaseLoader(std::string const& logger, uint32 const defaultUpdateMask)
+    : _logger(logger), _autoSetup(sConfigMgr->GetBoolDefault("Updates.AutoSetup", true)),
+    _updateFlags(sConfigMgr->GetIntDefault("Updates.EnableDatabases", defaultUpdateMask))
+{
+}
+
+template <class T>
+DatabaseLoader& DatabaseLoader::AddDatabase(DatabaseWorkerPool<T>& pool, std::string const& name)
+{
+    bool const updatesEnabledForThis = DBUpdater<T>::IsEnabled(_updateFlags);
+
+    _open.push(std::make_pair([this, name, updatesEnabledForThis, &pool]() -> bool
+    {
+        std::string const dbString = sConfigMgr->GetStringDefault(name + "DatabaseInfo", "");
+        if (dbString.empty())
+        {
+            TC_LOG_ERROR(_logger.c_str(), "Database %s not specified in configuration file!", name.c_str());
+            return false;
+        }
+
+        uint8 const asyncThreads = uint8(sConfigMgr->GetIntDefault(name + "Database.WorkerThreads", 1));
+        if (asyncThreads < 1 || asyncThreads > 32)
+        {
+            TC_LOG_ERROR(_logger.c_str(), "%s database: invalid number of worker threads specified. "
+                "Please pick a value between 1 and 32.", name.c_str());
+            return false;
+        }
+
+        uint8 const synchThreads = uint8(sConfigMgr->GetIntDefault(name + "Database.SynchThreads", 1));
+
+        pool.SetConnectionInfo(dbString, asyncThreads, synchThreads);
+        if (uint32 error = pool.Open())
+        {
+            // Database does not exist
+            if ((error == ER_BAD_DB_ERROR) && updatesEnabledForThis && _autoSetup)
+            {
+                // Try to create the database and connect again if auto setup is enabled
+                if (DBUpdater<T>::Create(pool) && (!pool.Open()))
+                    error = 0;
+            }
+
+            // If the error wasn't handled quit
+            if (error)
+            {
+                TC_LOG_ERROR("sql.driver", "\nDatabasePool %s NOT opened. There were errors opening the MySQL connections. Check your SQLDriverLogFile "
+                    "for specific errors. Read wiki at http://collab.kpsn.org/display/tc/TrinityCore+Home", name.c_str());
+
+                return false;
+            }
+        }
+        return true;
+    },
+    [&pool]()
+    {
+        pool.Close();
+    }));
+
+    // Populate and update only if updates are enabled for this pool
+    if (updatesEnabledForThis)
+    {
+        _populate.push([this, name, &pool]() -> bool
+        {
+            if (!DBUpdater<T>::Populate(pool))
+            {
+                TC_LOG_ERROR(_logger.c_str(), "Could not populate the %s database, see log for details.", name.c_str());
+                return false;
+            }
+            return true;
+        });
+
+        _update.push([this, name, &pool]() -> bool
+        {
+            if (!DBUpdater<T>::Update(pool))
+            {
+                TC_LOG_ERROR(_logger.c_str(), "Could not update the %s database, see log for details.", name.c_str());
+                return false;
+            }
+            return true;
+        });
+    }
+
+    _prepare.push([this, name, &pool]() -> bool
+    {
+        if (!pool.PrepareStatements())
+        {
+            TC_LOG_ERROR(_logger.c_str(), "Could not prepare statements of the %s database, see log for details.", name.c_str());
+            return false;
+        }
+        return true;
+    });
+
+    return *this;
+}
+
+bool DatabaseLoader::Load()
+{
+    if (!OpenDatabases())
+        return false;
+
+    if (!PopulateDatabases())
+        return false;
+
+    if (!UpdateDatabases())
+        return false;
+
+    if (!PrepareStatements())
+        return false;
+
+    return true;
+}
+
+bool DatabaseLoader::OpenDatabases()
+{
+    while (!_open.empty())
+    {
+        std::pair<Predicate, std::function<void()>> const load = _open.top();
+        if (load.first())
+            _close.push(load.second);
+        else
+        {
+            // Close all loaded databases
+            while (!_close.empty())
+            {
+                _close.top()();
+                _close.pop();
+            }
+            return false;
+        }
+
+        _open.pop();
+    }
+    return true;
+}
+
+// Processes the elements of the given stack until a predicate returned false.
+bool DatabaseLoader::Process(std::stack<Predicate>& stack)
+{
+    while (!stack.empty())
+    {
+        if (!stack.top()())
+            return false;
+
+        stack.pop();
+    }
+    return true;
+}
+
+bool DatabaseLoader::PopulateDatabases()
+{
+    return Process(_populate);
+}
+
+bool DatabaseLoader::UpdateDatabases()
+{
+    return Process(_update);
+}
+
+bool DatabaseLoader::PrepareStatements()
+{
+    return Process(_prepare);
+}
+
+template
+DatabaseLoader& DatabaseLoader::AddDatabase<LoginDatabaseConnection>(DatabaseWorkerPool<LoginDatabaseConnection>& pool, std::string const& name);
+template
+DatabaseLoader& DatabaseLoader::AddDatabase<WorldDatabaseConnection>(DatabaseWorkerPool<WorldDatabaseConnection>& pool, std::string const& name);
+template
+DatabaseLoader& DatabaseLoader::AddDatabase<CharacterDatabaseConnection>(DatabaseWorkerPool<CharacterDatabaseConnection>& pool, std::string const& name);