the begginning

ddlproc/ddlprocessor.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   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; version 2 of
+   the License.
+
+   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., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/***********************************************************************
+*   $Id: ddlprocessor.h 6 2006-06-23 17:58:51Z rcraighead $
+*
+*
+***********************************************************************/
+/** @file */
+#ifndef DDLPROCESSOR_H
+#define DDLPROCESSOR_H
+
+#include "ddlproc.h"
+#include "threadpool.h"
+#include "calpontsystemcatalog.h"
+#include "querytele.h"
+
+namespace ddlprocessor
+{
+/** @brief process ddl packages as they arrive
+  */
+class DDLProcessor
+{
+public:
+    /** @brief ctor
+      *
+      * @param packageMaxThreads the maximum number of threads to process ddl packages
+      * @param packageWorkQueueSize the maximum number of ddl packages in the work queue 
+      */
+    DDLProcessor( int packageMaxThreads, int packageWorkQueueSize );
+	~DDLProcessor();
+    /** @brief entry point for the DDLProcessor
+      */
+    void process();
+	int commitTransaction(uint32_t txnID, std::string & errorMsg);
+
+    /** @brief get the ddl package thread pool size
+      */
+    inline int getPackageThreadPoolSize() const { return fPackageMaxThreads; }
+
+    /** @brief set the ddl package thread pool size
+      */
+    inline void setPackageThreadPoolSize( int threadPoolSize ) { fPackageMaxThreads = threadPoolSize; }
+
+    /** @brief get the maximum number of ddl packages allowed in the work queue
+      */
+    inline int getPackageWorkQueueSize() const { return fPackageWorkQueueSize; }
+
+    /** @brief set the maximum number of ddl packages allowed in the work queue
+      */
+    inline void setPackageWorkQueueSize( int workQueueSize ) { fPackageWorkQueueSize = workQueueSize; }
+
+
+protected:
+
+private:
+    /** @brief ctor
+      */
+    DDLProcessor();
+
+    /** @brief the thread pool for processing ddl packages
+      */
+    threadpool::ThreadPool fDdlPackagepool;
+
+    int fPackageMaxThreads;     /** @brief max number of threads to process ddl packages */
+    int fPackageWorkQueueSize;  /** @brief max number of ddl packages waiting in the work queue */
+
+    messageqcpp::MessageQueueServer fMqServer;
+    boost::shared_ptr<execplan::CalpontSystemCatalog> csc;
+    WriteEngine::WEClients* fWEClient;
+    uint32_t fPMCount;
+    querytele::QueryTeleClient fQtc;
+};
+
+
+} //namespace ddlprocessor
+
+#endif //DDLPROCESSOR_H
+