the begginning

versioning/BRM/slavecomm.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: slavecomm.h 1823 2013-01-21 14:13:09Z rdempsey $
+ *
+ *****************************************************************************/
+
+/** @file 
+ * class XXX interface
+ */
+
+#ifndef SLAVECOMM_H_
+#define SLAVECOMM_H_
+
+#include <unistd.h>
+#include <iostream>
+
+#include <boost/thread/mutex.hpp>
+
+#include "brmtypes.h"
+#include "slavedbrmnode.h"
+#include "messagequeue.h"
+#include "bytestream.h"
+
+#if defined(_MSC_VER) && defined(xxxSLAVECOMM_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+// forward reference
+namespace idbdatafile
+{
+class IDBDataFile;
+}
+
+
+namespace BRM {
+
+class SlaveComm {
+	public:
+		/** Use this ctor to instantiate a standalone SlaveComm ie, for replaying
+			the journal.  Should be used only by load_brm. */
+		EXPORT SlaveComm();
+
+		/** Use this ctor to have it connected to the rest of the DBRM system */
+		EXPORT SlaveComm(std::string hostname, SlaveDBRMNode *s);  //hostname = 'DBRM_WorkerN'
+		EXPORT ~SlaveComm();
+
+		EXPORT void run();
+		EXPORT void stop();
+		EXPORT void reset();
+
+		EXPORT int replayJournal(std::string prefix);
+		EXPORT int printJournal(std::string prefix);
+
+	private:
+
+		SlaveComm& operator=(const SlaveComm& s);
+
+		void processCommand(messageqcpp::ByteStream &msg);
+
+		void do_createStripeColumnExtents(messageqcpp::ByteStream &msg);
+		void do_createColumnExtent_DBroot(messageqcpp::ByteStream &msg);
+		void do_createColumnExtentExactFile(messageqcpp::ByteStream &msg);
+		void do_createDictStoreExtent(messageqcpp::ByteStream &msg);
+		void do_rollbackColumnExtents_DBroot(messageqcpp::ByteStream &msg);
+		void do_deleteEmptyColExtents(messageqcpp::ByteStream &msg);
+		void do_deleteEmptyDictStoreExtents(messageqcpp::ByteStream &msg);
+		void do_rollbackDictStoreExtents_DBroot(messageqcpp::ByteStream &msg);
+		void do_deleteOID(messageqcpp::ByteStream &msg); 
+		void do_deleteOIDs(messageqcpp::ByteStream &msg);
+		void do_setLocalHWM(messageqcpp::ByteStream &msg);
+		void do_bulkSetHWM(messageqcpp::ByteStream &msg);
+		void do_bulkSetHWMAndCP(messageqcpp::ByteStream &msg);
+		void do_writeVBEntry(messageqcpp::ByteStream &msg); 
+		void do_beginVBCopy(messageqcpp::ByteStream &msg);
+		void do_endVBCopy(messageqcpp::ByteStream &msg); 
+		void do_vbRollback1(messageqcpp::ByteStream &msg);
+		void do_vbRollback2(messageqcpp::ByteStream &msg);
+		void do_vbCommit(messageqcpp::ByteStream &msg);
+		void do_markInvalid(messageqcpp::ByteStream &msg);
+		void do_markManyExtentsInvalid(messageqcpp::ByteStream &msg);
+		void do_mergeExtentsMaxMin(messageqcpp::ByteStream &msg);
+		void do_setExtentMaxMin(messageqcpp::ByteStream &msg);
+		void do_setExtentsMaxMin(messageqcpp::ByteStream &msg); // bug 1970
+		void do_deletePartition(messageqcpp::ByteStream &msg);
+		void do_markPartitionForDeletion(messageqcpp::ByteStream &msg);
+		void do_markAllPartitionForDeletion(messageqcpp::ByteStream &msg);
+		void do_restorePartition(messageqcpp::ByteStream &msg);
+		void do_dmlLockLBIDRanges(messageqcpp::ByteStream &msg);
+		void do_dmlReleaseLBIDRanges(messageqcpp::ByteStream &msg);
+		void do_deleteDBRoot(messageqcpp::ByteStream &msg);
+		void do_bulkUpdateDBRoot(messageqcpp::ByteStream &msg);
+
+		void do_undo();
+		void do_confirm();
+		void do_flushInodeCache();
+		void do_clear();
+		void do_ownerCheck(messageqcpp::ByteStream &msg);
+		void do_takeSnapshot();
+		void saveDelta();
+		bool processExists(const uint32_t pid, const std::string& pname);
+
+		messageqcpp::MessageQueueServer *server;
+		messageqcpp::IOSocket master;
+		SlaveDBRMNode *slave;
+		std::string savefile;
+		bool release, die, firstSlave, saveFileToggle, takeSnapshot, doSaveDelta, standalone, printOnly;
+		messageqcpp::ByteStream delta;
+		int currentSaveFD;
+		idbdatafile::IDBDataFile* currentSaveFile;
+		std::string journalName;
+		std::fstream journal;
+		idbdatafile::IDBDataFile* journalh;
+		int64_t snapshotInterval, journalCount;
+		struct timespec MSG_TIMEOUT;
+#ifdef _MSC_VER
+		boost::mutex fPidMemLock;
+		DWORD* fPids;
+		DWORD fMaxPids;
+#endif
+};
+
+}
+
+#undef EXPORT
+
+#endif