the begginning

versioning/BRM/masternode.cpp

@@ -0,0 +1,175 @@
+/* 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: masternode.cpp 1931 2013-07-08 16:53:02Z bpaul $
+ *
+ ****************************************************************************/
+
+/*
+ * The executable source that runs a Master DBRM Node.
+ */
+
+#include "masterdbrmnode.h"
+#include "liboamcpp.h"
+#include <unistd.h>
+#include <signal.h>
+#include <exception>
+#include <string>
+#include <clocale>
+#include "IDBPolicy.h"
+#include "brmtypes.h"
+#include "utils_utf8.h"
+
+#define MAX_RETRIES 10
+
+BRM::MasterDBRMNode *m;
+bool die;
+
+using namespace std;
+using namespace BRM;
+
+void fail()
+{
+	try {
+		oam::Oam oam;
+
+		oam.processInitFailure();
+	}
+	catch (exception&) {
+		cerr << "failed to notify OAM of server failure" << endl;
+	}
+}
+
+void stop(int num)
+{
+#ifdef BRM_VERBOSE
+	std::cerr << "stopping..." << std::endl;
+#endif
+	die = true;
+	if (m != NULL)
+		m->stop();
+}
+
+void restart(int num)
+{
+#ifdef BRM_VERBOSE
+	std::cerr << "stopping this instance..." << std::endl;
+#endif
+	if (m != NULL)
+		m->stop();
+}
+
+/*  doesn't quite work yet...
+void reload(int num)
+{
+#ifdef BRM_VERBOSE
+	std::cerr << "reloading the config file" << std::endl;
+#endif
+	m->lock();
+	try {
+		m->reload();
+	}
+	catch (std::exception &e) {
+		m->setReadOnly(true);
+		std::cerr << "Reload failed.  Check the config file.  Reverting to read-only mode." 
+			<< std::endl;
+	}
+	m->unlock();
+}
+*/
+
+int main(int argc, char **argv)
+{
+    // get and set locale language - BUG 5362
+	string systemLang = "C";
+	systemLang = funcexp::utf8::idb_setlocale();
+
+	BRM::logInit ( BRM::SubSystemLogId_controllerNode );
+
+	int retries = 0, err;
+	std::string arg;
+
+	die = false;
+
+	if (!(argc >= 2 && (arg = argv[1]) == "fg")) {
+		if ((err = fork()) < 0){
+			perror(argv[0]);
+			log_errno(string(argv[0]));
+			fail();
+			exit(1);
+		}
+		if (err > 0)
+			exit(0);
+	}
+
+	(void)config::Config::makeConfig();
+
+	/* XXXPAT: we might want to install signal handlers for every signal */
+
+	signal(SIGINT, stop);
+	signal(SIGTERM, stop);
+#ifndef _MSC_VER
+	signal(SIGHUP, SIG_IGN);
+	signal(SIGUSR1, restart);
+	signal(SIGPIPE, SIG_IGN);
+#endif
+
+	idbdatafile::IDBPolicy::configIDBPolicy();
+
+	m = NULL;
+	while (retries < MAX_RETRIES && !die) {
+		try {
+			if (m != NULL)
+				delete m;
+			m = new BRM::MasterDBRMNode();
+			try {
+				oam::Oam oam;
+
+				oam.processInitComplete("DBRMControllerNode");
+			}
+			catch (exception &e) {
+				ostringstream os;
+
+				os << "failed to notify OAM: " << e.what();
+				os << " continuing anyway";
+				cerr << os.str() << endl;
+				log(os.str(), logging::LOG_TYPE_WARNING);
+			}
+			m->run();
+			retries = 0;
+			delete m;
+			m = NULL;
+		}
+		catch (std::exception &e) {
+			ostringstream os;
+			os << e.what();
+			os << "... attempt #" << retries+1 << "/" << MAX_RETRIES << " to restart the  DBRM controller node";
+			cerr << os.str() << endl;
+			log(os.str());
+			sleep(5);
+		}
+		retries++;
+	}
+	if (retries == MAX_RETRIES) {
+		log(string("Exiting after too many errors"));
+		fail();
+	}
+	std::cerr << "Exiting..." << std::endl;
+	exit(0);
+}
+