Added cta-database-poll for testing and debugging

catalogue/CMakeLists.txt

@@ -181,3 +181,14 @@ target_link_libraries (cta-catalogue-schema-drop
 
 install (TARGETS cta-catalogue-schema-drop DESTINATION /usr/bin)
 install (FILES ${CMAKE_CURRENT_SOURCE_DIR}/cta-catalogue-schema-drop.1cta DESTINATION /usr/share/man/man1)
+
+add_executable(cta-database-poll
+  PollDatabaseCmd.cpp
+  PollDatabaseCmdLineArgs.cpp
+  PollDatabaseCmdMain.cpp)
+
+target_link_libraries (cta-database-poll
+  ctacatalogue)
+
+install (TARGETS cta-database-poll DESTINATION /usr/bin)
+install (FILES ${CMAKE_CURRENT_SOURCE_DIR}/cta-database-poll.1cta DESTINATION /usr/share/man/man1)

catalogue/PollDatabaseCmd.cpp

+/*
+ * The CERN Tape Archive (CTA) project
+ * Copyright (C) 2015  CERN
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "catalogue/CatalogueFactory.hpp"
+#include "catalogue/PollDatabaseCmd.hpp"
+#include "catalogue/PollDatabaseCmdLineArgs.hpp"
+#include "rdbms/ConnFactoryFactory.hpp"
+
+#include <unistd.h>
+
+namespace cta {
+namespace catalogue {
+
+//------------------------------------------------------------------------------
+// constructor
+//------------------------------------------------------------------------------
+PollDatabaseCmd::PollDatabaseCmd(std::istream &inStream, std::ostream &outStream, std::ostream &errStream):
+CmdLineTool(inStream, outStream, errStream) {
+}
+
+//------------------------------------------------------------------------------
+// destructor
+//------------------------------------------------------------------------------
+PollDatabaseCmd::~PollDatabaseCmd() noexcept {
+}
+
+//------------------------------------------------------------------------------
+// exceptionThrowingMain
+//------------------------------------------------------------------------------
+int PollDatabaseCmd::exceptionThrowingMain(const int argc, char *const *const argv) {
+  const PollDatabaseCmdLineArgs cmdLineArgs(argc, argv);
+  const auto dbLogin = rdbms::Login::parseFile(cmdLineArgs.dbConfigPath);
+  auto factory = rdbms::ConnFactoryFactory::create(dbLogin); 
+  auto conn = factory->create();
+
+  uint32_t elapsedSeconds = 0;
+  for(uint32_t i = 0; i < cmdLineArgs.numberOfSecondsToKeepPolling; i++) {
+    m_out << "Querying the database" << std::endl;
+    try {
+      conn->getTableNames();
+    } catch(exception::Exception &ex) {
+      m_out << "Database error: " << ex.getMessage().str() << std::endl;
+    }
+
+    m_out << "Sleeping for 1 second" << std::endl;
+    elapsedSeconds++;
+    m_out << "Elapsed seconds = " << elapsedSeconds << std::endl;
+    sleep(1);
+  }
+
+  return 0;
+}
+
+} // namespace catalogue
+} // namespace cta

catalogue/PollDatabaseCmd.hpp

+/*
+ * The CERN Tape Archive (CTA) project
+ * Copyright (C) 2015  CERN
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "catalogue/CmdLineTool.hpp"
+
+namespace cta {
+namespace catalogue {
+
+/**
+ * Command-line tool that simply polls the database with a simple SQL SELECT
+ * statement.
+ *
+ * The purpose of this tool is to faciliate the development and testing of the
+ * reconnect logic of CTA database connections.  The database server is
+ * configured to break some connections.  If the reconnect logic is working
+ * correctly then the polling loop of this command should trigger automatic
+ * and successfull reconnects.
+ */
+class PollDatabaseCmd: public CmdLineTool {
+public:
+
+  /**
+   * Constructor.
+   *
+   * @param inStream Standard input stream.
+   * @param outStream Standard output stream.
+   * @param errStream Standard error stream.
+   */
+  PollDatabaseCmd(std::istream &inStream, std::ostream &outStream, std::ostream &errStream);
+
+  /**
+   * Destructor.
+   */
+  ~PollDatabaseCmd() noexcept;
+
+  /**
+   * An exception throwing version of main().
+   *
+   * @param argc The number of command-line arguments including the program name.
+   * @param argv The command-line arguments.
+   * @return The exit value of the program.
+   */
+  int exceptionThrowingMain(const int argc, char *const *const argv);
+
+}; // class PollDatabaseCmd
+
+} // namespace catalogue
+} // namespace cta

catalogue/PollDatabaseCmdLineArgs.cpp

+/*
+ * The CERN Tape Archive (CTA) project
+ * Copyright (C) 2015  CERN
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "catalogue/PollDatabaseCmdLineArgs.hpp"
+#include "common/exception/Exception.hpp"
+#include "common/utils/utils.hpp"
+
+#include <ostream>
+
+namespace cta {
+namespace catalogue {
+
+//------------------------------------------------------------------------------
+// constructor
+//------------------------------------------------------------------------------
+PollDatabaseCmdLineArgs::PollDatabaseCmdLineArgs(const int argc, const char *const *const argv) {
+  if(argc != 3) {
+    exception::Exception ex;
+    ex.getMessage() << "Wrong number of command-line arguments: excepted=2 actual=" << (argc - 1) << std::endl <<
+      std::endl;
+    printUsage(ex.getMessage());
+    throw ex;
+  }
+
+  numberOfSecondsToKeepPolling = utils::toUint64(argv[1]);
+  dbConfigPath = argv[2];
+}
+
+//------------------------------------------------------------------------------
+// printUsage
+//------------------------------------------------------------------------------
+void PollDatabaseCmdLineArgs::printUsage(std::ostream &os) {
+  os <<
+    "Usage:" << std::endl <<
+    "    cta-database-poll numberOfSecondsToKeepPolling databaseConnectionFile" << std::endl <<
+    "Where:" << std::endl <<
+    "    numberOfSecondsToKeepPolling" << std::endl <<
+    "        The total number of seconds cta-database-poll should run before" <<  std::endl <<
+    "        exiting." << std::endl <<
+    "    databaseConnectionFile" << std::endl <<
+    "        The path to the file containing the connection details of the CTA" << std::endl <<
+    "        catalogue database." << std::endl;
+}
+
+} // namespace catalogue
+} // namespace cta

catalogue/PollDatabaseCmdLineArgs.hpp

+/*
+ * The CERN Tape Archive (CTA) project
+ * Copyright (C) 2015  CERN
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+#include <string>
+
+namespace cta {
+namespace catalogue {
+
+/**
+ * Structure to store the command-line arguments of the command-line tool
+ * named cta-database-poll.
+ */
+struct PollDatabaseCmdLineArgs {
+  /**
+   * The total number of seconds the cta-database-pollshould run before exiting.
+   */
+  uint64_t numberOfSecondsToKeepPolling;
+
+  /**
+   * Path to the file containing the connection details of the catalogue
+   * database.
+   */
+  std::string dbConfigPath;
+
+  /**
+   * Constructor that parses the specified command-line arguments.
+   *
+   * @param argc The number of command-line arguments including the name of the
+   * executable.
+   * @param argv The vector of command-line arguments.
+   */
+  PollDatabaseCmdLineArgs(const int argc, const char *const *const argv);
+
+  /**
+   * Prints the usage message of the command-line tool.
+   *
+   * @param os The output stream to which the usage message is to be printed.
+   */
+  static void printUsage(std::ostream &os);
+};
+
+} // namespace catalogue
+} // namespace cta

catalogue/PollDatabaseCmdMain.cpp

+/*
+ * The CERN Tape Archive (CTA) project
+ * Copyright (C) 2015  CERN
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "catalogue/PollDatabaseCmd.hpp"
+#include "common/exception/Exception.hpp"
+
+#include <iostream>
+
+/**
+ * An exception throwing version of main().
+ *
+ * @param argc The number of command-line arguments including the program name.
+ * @param argv The command-line arguments.
+ * @return The exit value of the program.
+ */
+static int exceptionThrowingMain(const int argc, char *const *const argv);
+
+//------------------------------------------------------------------------------
+// main
+//------------------------------------------------------------------------------
+int main(const int argc, char *const *const argv) {
+  using namespace cta;
+
+  std::string errorMessage;
+
+  try {
+    return exceptionThrowingMain(argc, argv);
+  } catch(exception::Exception &ex) {
+    errorMessage = ex.getMessage().str();
+  } catch(std::exception &se) {
+    errorMessage = se.what();
+  } catch(...) {
+    errorMessage = "An unknown exception was thrown";
+  }
+
+  // Reaching this point means the command has failed, an exception was throw
+  // and errorMessage has been set accordingly
+
+  std::cerr << "Aborting: " << errorMessage << std::endl;
+  return 1;
+}
+
+//------------------------------------------------------------------------------
+// exceptionThrowingMain
+//------------------------------------------------------------------------------
+static int exceptionThrowingMain(const int argc, char *const *const argv) {
+  using namespace cta;
+
+  catalogue::PollDatabaseCmd cmd(std::cin, std::cout, std::cerr);
+
+  return cmd.exceptionThrowingMain(argc, argv);
+}

catalogue/cta-database-poll.1cta

+.\" The CERN Tape Archive (CTA) project
+.\" Copyright (C) 2015  CERN
+.\"
+.\" 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 3 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, see <http://www.gnu.org/licenses/>.
+.TH CTA-DATABASE-POLL 1CTA "December 2016" CTA CTA
+.SH NAME
+cta-database-poll \- Polls the specified database every second
+.SH SYNOPSIS
+.BI "cta-database-poll numberOfSecondsToKeepPolling databaseConnectionFile"
+.SH DESCRIPTION
+\fBcta-database-poll\fP is a command-line tool that polls the specified database
+every second for the specified total number of seconds.
+.SH ARGUMENTS
+.TP
+\fBnumberOfSecondsToKeepPolling
+The total number of seconds cta-database-poll should run before exiting.
+.TP
+\fBdatabaseConnectionFile
+The path to the configuration file containing the connection details of the
+CTA catalogue database.
+.SH RETURN VALUE
+Zero on success and non-zero on failure.
+.SH EXAMPLES
+cta-database-poll 5 /etc/cta/cta_catalogue_db.conf
+
+.SH AUTHOR
+\fBCTA\fP Team

cta.spec.in

@@ -228,12 +228,14 @@ Scripts and utilities to faciliate working with the CTA catalogue
 %attr(0755,root,root) %{_bindir}/cta-catalogue-schema-lock
 %attr(0755,root,root) %{_bindir}/cta-catalogue-schema-status
 %attr(0755,root,root) %{_bindir}/cta-catalogue-schema-unlock
+%attr(0755,root,root) %{_bindir}/cta-database-poll
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-delete-all-data.1cta.gz
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-schema-create.1cta.gz
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-schema-drop.1cta.gz
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-schema-lock.1cta.gz
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-schema-status.1cta.gz
 %attr(0644,root,bin) %doc /usr/share/man/man1/cta-catalogue-schema-unlock.1cta.gz
+%attr(0644,root,bin) %doc /usr/share/man/man1/cta-database-poll.1cta.gz
 
 %package -n cta-mediachangerutils
 Summary: Utilities to faciliate working with mediachangers