the begginning

versioning/BRM/save_brm.cpp

@@ -0,0 +1,111 @@
+/* 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: save_brm.cpp 1910 2013-06-18 15:19:15Z rdempsey $
+ *
+ ****************************************************************************/
+
+/*
+ * Saves the current state of the BRM data structures.
+ *
+ * More detailed description
+ */
+
+#include <unistd.h>
+#include <iostream>
+#include <sys/types.h>
+#include <sys/stat.h>
+using namespace std;
+
+#include "brmtypes.h"
+#include "rwlock.h"
+#include "mastersegmenttable.h"
+#include "extentmap.h"
+#include "copylocks.h"
+#include "vss.h"
+#include "vbbm.h"
+#include "blockresolutionmanager.h"
+#include "IDBDataFile.h"
+#include "IDBPolicy.h"
+using namespace idbdatafile;
+using namespace BRM;
+
+#include "configcpp.h"
+
+int main (int argc, char **argv)
+{
+	BlockResolutionManager brm;
+	config::Config *config = config::Config::makeConfig();
+	int err;
+	string prefix, currentFilename;
+	IDBDataFile* currentFile = NULL;
+
+	if (argc > 1)
+		prefix = argv[1];
+	else {
+		prefix = config->getConfig("SystemConfig", "DBRMRoot");
+		if (prefix.length() == 0) {
+			cerr << "Error: Need a valid Calpont configuation file" << endl;
+			exit(1);
+		}
+	}
+
+	idbdatafile::IDBPolicy::configIDBPolicy();
+
+	err = brm.saveState(prefix);
+	if (err == 0)
+		cout << "Saved to " << prefix << endl;
+	else {
+		cout << "Save failed" << endl;
+		exit(1);
+	}
+
+	(void)::umask(0);
+
+	currentFilename = prefix + "_current";
+	currentFile = IDBDataFile::open(IDBPolicy::getType(currentFilename.c_str(),
+									IDBPolicy::WRITEENG),
+									currentFilename.c_str(),
+									"wb",
+									0);
+
+	if (!currentFile) {
+		cerr << "Error: could not open " << currentFilename << "for writing" << endl;
+		exit(1);
+	}
+	try {
+#ifndef _MSC_VER
+		prefix += '\n';
+#endif
+		currentFile->write(prefix.c_str(), prefix.length());
+	}
+	catch (exception &e) {
+		cerr << "Error: failed to write to " << currentFilename << ": " << e.what() << endl;
+		exit(1);
+	}
+	try {
+		delete currentFile;
+		currentFile = NULL;
+	}
+	catch (exception &e) {
+		cerr << "Error: failed to close " << currentFilename << ": " << e.what() << endl;
+		exit(1);
+	}
+
+	return 0;
+}