[svn] * Proper SVN structureinit

--HG--
branch : trunk

1 files changed, 345 insertions, 0 deletions

diff --git a/src/shared/Database/DatabasePostgre.cpp b/src/shared/Database/DatabasePostgre.cpp
new file mode 100644
index 00000000000..637c2ac9522
--- /dev/null
+++ b/src/shared/Database/DatabasePostgre.cpp
@@ -0,0 +1,345 @@
+/* 
+ * Copyright (C) 2005-2008 MaNGOS <http://www.mangosproject.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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef DO_POSTGRESQL
+
+#include "Util.h"
+#include "Policies/SingletonImp.h"
+#include "Platform/Define.h"
+#include "../src/zthread/ThreadImpl.h"
+#include "DatabaseEnv.h"
+#include "Database/PGSQLDelayThread.h"
+#include "Database/SqlOperations.h"
+#include "Timer.h"
+
+void DatabasePostgre::ThreadStart()
+{
+}
+
+void DatabasePostgre::ThreadEnd()
+{
+}
+
+size_t DatabasePostgre::db_count = 0;
+
+DatabasePostgre::DatabasePostgre() : Database(), mPGconn(NULL)
+{
+    // before first connection
+    if( db_count++ == 0 )
+    {
+
+        if (!PQisthreadsafe())
+        {
+            sLog.outError("FATAL ERROR: PostgreSQL libpq isn't thread-safe.");
+            exit(1);
+        }
+    }
+}
+
+DatabasePostgre::~DatabasePostgre()
+{
+
+    if (m_delayThread)
+        HaltDelayThread();
+
+    if( mPGconn )
+    {
+        PQfinish(mPGconn);
+        mPGconn = NULL;
+    }
+}
+
+bool DatabasePostgre::Initialize(const char *infoString)
+{
+    if(!Database::Initialize(infoString))
+        return false;
+
+    tranThread = NULL;
+
+    InitDelayThread();
+
+    Tokens tokens = StrSplit(infoString, ";");
+
+    Tokens::iterator iter;
+
+    std::string host, port_or_socket, user, password, database;
+
+    iter = tokens.begin();
+
+    if(iter != tokens.end())
+        host = *iter++;
+    if(iter != tokens.end())
+        port_or_socket = *iter++;
+    if(iter != tokens.end())
+        user = *iter++;
+    if(iter != tokens.end())
+        password = *iter++;
+    if(iter != tokens.end())
+        database = *iter++;
+
+    mPGconn = PQsetdbLogin(host.c_str(), port_or_socket.c_str(), NULL, NULL, database.c_str(), user.c_str(), password.c_str());
+
+    /* check to see that the backend connection was successfully made */
+    if (PQstatus(mPGconn) != CONNECTION_OK)
+    {
+        sLog.outError( "Could not connect to Postgre database at %s: %s",
+            host.c_str(), PQerrorMessage(mPGconn));
+        PQfinish(mPGconn);
+        return false;
+    }
+    else
+    {
+        sLog.outDetail( "Connected to Postgre database at %s",
+            host.c_str());
+        sLog.outString( "PostgreSQL server ver: %d",PQserverVersion(mPGconn));
+        return true;
+    }
+
+}
+
+QueryResult* DatabasePostgre::Query(const char *sql)
+{
+    if (!mPGconn)
+        return 0;
+
+    uint64 rowCount = 0;
+    uint32 fieldCount = 0;
+
+    // guarded block for thread-safe request
+    ZThread::Guard<ZThread::FastMutex> query_connection_guard(mMutex);
+    #ifdef MANGOS_DEBUG
+    uint32 _s = getMSTime();
+    #endif
+    // Send the query
+    PGresult * result = PQexec(mPGconn, sql);
+    if (!result )
+    {
+        return NULL;
+    }
+
+    if (PQresultStatus(result) != PGRES_TUPLES_OK)
+    {
+        sLog.outErrorDb( "SQL : %s", sql );
+        sLog.outErrorDb( "SQL %s", PQerrorMessage(mPGconn));
+        PQclear(result);
+        return NULL;
+    }
+    else
+    {
+        #ifdef MANGOS_DEBUG
+        sLog.outDebug("[%u ms] SQL: %s", getMSTime() - _s, sql );
+        #endif
+    }
+
+    rowCount = PQntuples(result);
+    fieldCount = PQnfields(result);
+    // end guarded block
+
+    if (!rowCount)
+    {
+        PQclear(result);
+        return NULL;
+    }
+
+    QueryResultPostgre * queryResult = new QueryResultPostgre(result, rowCount, fieldCount);
+    queryResult->NextRow();
+
+    return queryResult;
+}
+
+bool DatabasePostgre::Execute(const char *sql)
+{
+
+    if (!mPGconn)
+        return false;
+
+    // don't use queued execution if it has not been initialized
+    if (!m_threadBody) return DirectExecute(sql);
+
+    tranThread = ZThread::ThreadImpl::current();            // owner of this transaction
+    TransactionQueues::iterator i = m_tranQueues.find(tranThread);
+    if (i != m_tranQueues.end() && i->second != NULL)
+    {                                                       // Statement for transaction
+        i->second->DelayExecute(sql);
+    }
+    else
+    {
+        // Simple sql statement
+        m_threadBody->Delay(new SqlStatement(sql));
+    }
+
+    return true;
+}
+
+bool DatabasePostgre::DirectExecute(const char* sql)
+{
+    if (!mPGconn)
+        return false;
+    {
+        // guarded block for thread-safe  request
+        ZThread::Guard<ZThread::FastMutex> query_connection_guard(mMutex);
+        #ifdef MANGOS_DEBUG
+        uint32 _s = getMSTime();
+        #endif
+        PGresult *res = PQexec(mPGconn, sql);
+        if (PQresultStatus(res) != PGRES_COMMAND_OK)
+        {
+            sLog.outErrorDb( "SQL: %s", sql );
+            sLog.outErrorDb( "SQL %s", PQerrorMessage(mPGconn) );
+            return false;
+        }
+        else
+        {
+            #ifdef MANGOS_DEBUG
+            sLog.outDebug("[%u ms] SQL: %s", getMSTime() - _s, sql );
+            #endif
+        }
+        PQclear(res);
+
+        // end guarded block
+    }
+    return true;
+}
+
+bool DatabasePostgre::_TransactionCmd(const char *sql)
+{
+    if (!mPGconn)
+        return false;
+
+    PGresult *res = PQexec(mPGconn, sql);
+    if (PQresultStatus(res) != PGRES_COMMAND_OK)
+    {
+        sLog.outError("SQL: %s", sql);
+        sLog.outError("SQL ERROR: %s", PQerrorMessage(mPGconn));
+        return false;
+    }
+    else
+    {
+        DEBUG_LOG("SQL: %s", sql);
+    }
+    return true;
+}
+
+bool DatabasePostgre::BeginTransaction()
+{
+    if (!mPGconn)
+        return false;
+    // don't use queued execution if it has not been initialized
+    if (!m_threadBody)
+    {
+        if (tranThread==ZThread::ThreadImpl::current())
+            return false;                                   // huh? this thread already started transaction
+        mMutex.acquire();
+        if (!_TransactionCmd("START TRANSACTION"))
+        {
+            mMutex.release();                               // can't start transaction
+            return false;
+        }
+        return true;
+    }
+    // transaction started
+    tranThread = ZThread::ThreadImpl::current();            // owner of this transaction
+    TransactionQueues::iterator i = m_tranQueues.find(tranThread);
+    if (i != m_tranQueues.end() && i->second != NULL)
+        // If for thread exists queue and also contains transaction
+        // delete that transaction (not allow trans in trans)
+        delete i->second;
+
+    m_tranQueues[tranThread] = new SqlTransaction();
+
+    return true;
+}
+
+bool DatabasePostgre::CommitTransaction()
+{
+    if (!mPGconn)
+        return false;
+
+    // don't use queued execution if it has not been initialized
+    if (!m_threadBody)
+    {
+        if (tranThread!=ZThread::ThreadImpl::current())
+            return false;
+        bool _res = _TransactionCmd("COMMIT");
+        tranThread = NULL;
+        mMutex.release();
+        return _res;
+    }
+    tranThread = ZThread::ThreadImpl::current();
+    TransactionQueues::iterator i = m_tranQueues.find(tranThread);
+    if (i != m_tranQueues.end() && i->second != NULL)
+    {
+        m_threadBody->Delay(i->second);
+        i->second = NULL;
+        return true;
+    }
+    else
+        return false;
+}
+
+bool DatabasePostgre::RollbackTransaction()
+{
+    if (!mPGconn)
+        return false;
+    // don't use queued execution if it has not been initialized
+    if (!m_threadBody)
+    {
+        if (tranThread!=ZThread::ThreadImpl::current())
+            return false;
+        bool _res = _TransactionCmd("ROLLBACK");
+        tranThread = NULL;
+        mMutex.release();
+        return _res;
+    }
+    tranThread = ZThread::ThreadImpl::current();
+    TransactionQueues::iterator i = m_tranQueues.find(tranThread);
+    if (i != m_tranQueues.end() && i->second != NULL)
+    {
+        delete i->second;
+        i->second = NULL;
+    }
+    return true;
+}
+
+unsigned long DatabasePostgre::escape_string(char *to, const char *from, unsigned long length)
+{
+    if (!mPGconn || !to || !from || !length)
+        return 0;
+
+    return PQescapeString(to, from, length);
+}
+
+void DatabasePostgre::InitDelayThread()
+{
+    assert(!m_delayThread);
+
+    //New delay thread for delay execute
+    m_delayThread = new ZThread::Thread(m_threadBody = new PGSQLDelayThread(this));
+}
+
+void DatabasePostgre::HaltDelayThread()
+{
+    if (!m_threadBody || !m_delayThread) return;
+
+    m_threadBody->Stop();                                   //Stop event
+    m_delayThread->wait();                                  //Wait for flush to DB
+    delete m_delayThread;                                   //This also deletes m_threadBody
+    m_delayThread = NULL;
+    m_threadBody = NULL;
+}
+#endif