/* 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: we_brmreporter.h 4731 2013-08-09 22:37:44Z wweeks $
 *
 *****************************************************************************/

#include <fstream>
#include <string>
#include <vector>
#include <utility>
#include "boost/tuple/tuple.hpp"

#include "brmtypes.h"
#include "calpontsystemcatalog.h"
/** @file
 * class BRMReporter
 */

#pragma once

namespace WriteEngine
{
class Log;

/** @brief Accumulate update info that is later forwarded to BRM.
 *
 * This class accumulates BRM data (HWM and Casual Partition).  At the end
 * of the job, the BRMReporter object either saves the data to a report file,
 * or the information is sent directly to BRM.
 */
class BRMReporter
{
 public:
  /** @brief Constructor
   *  @param logger Object used for logging
   *  @param tableName Name of relevant DB table
   */
  BRMReporter(Log* logger, const std::string& tableName);

  /** @brief Destructor
   */
  ~BRMReporter();

  /** @brief Add a CPInfoMerge entry to the output list
   *  @param cpEntry Casual Partition information to be added to output list
   */
  void addToCPInfo(const BRM::CPInfoMerge& cpEntry);

  /** @brief Add a BulkSetHWMArg entry to the output list
   *  @param hwmEntry HWM information to be be added to output list
   */
  void addToHWMInfo(const BRM::BulkSetHWMArg& hwmEntry);

  /** @brief Add a Column FileInfo entry to the output list
   *  @param fileEntry file information to be be added to output list
   */
  void addToFileInfo(const BRM::FileInfo& fileEntry);

  /** @brief Add a Dictionary FileInfo entry to the output list
   *  @param fileEntry file information to be be added to output list
   */
  void addToDctnryFileInfo(const BRM::FileInfo& fileEntry);

  /** @brief Add a ErrMsg entry to the output list
   *  @param Critical Error Message
   */
  void addToErrMsgEntry(const std::string& errCritMsg);

  /* @brief Save Critical error messages to the BRM report file
   * @param rptFileName Name of file to save info, else info is dropped
   */
  void sendErrMsgToFile(const std::string& rptFileName);

  /** @brief Send HWM and Casual Partition Data to the applicable destination
   *  @param rptFileName Name of file to save info, else info is sent to BRM.
   *  @param errFiles    List of *.err filenames to record in report file
   *  @param badFiles    List of *.bad filenames to record in report file
   */
  int sendBRMInfo(const std::string& rptFileName, const std::vector<std::string>& errFiles,
                  const std::vector<std::string>& badFiles);

  /** @brief Report summary totals
   *  @param totalReadRows Total number of rows read
   *  @param totalInsertedRows Total number of rows inserted
   *  @param satCounts Number of out-of-range values for each column,
   *                   Vector is vector of column oid, count pairs.
   */
  void reportTotals(
      uint64_t totalReadRows, uint64_t totalInsertedRows,
      const std::vector<boost::tuple<execplan::CalpontSystemCatalog::ColDataType, uint64_t, uint64_t> >&
          satCounts);

  /** @brief Generate report for job that exceeds error limit
   *  @param rptFileName Name of file to save info, else info is dropped
   *  @param errFiles    List of *.err filenames to record in report file
   *  @param badFiles    List of *.bad filenames to record in report file
   */
  void rptMaxErrJob(const std::string& rptFileName, const std::vector<std::string>& errFiles,
                    const std::vector<std::string>& badFiles);

 private:
  // Disable copy constructor and assignment operator by declaring and
  // not defining.
  BRMReporter(const BRMReporter&);
  BRMReporter& operator=(const BRMReporter&);

  int sendHWMandCPToBRM();  // send HWM and CP updates to BRM
  void sendHWMToFile();     // save HWM updates to a report file
  void sendCPToFile();      // save CP  updates to a report file
  int openRptFile();        // open BRM Report file
  void closeRptFile();      // close BRM Report file

  Log* fLog;                                   // Logger
  std::string fTableName;                      // Name of db table we are saving info for
  BRM::CPInfoMergeList_t fCPInfo;              // Collection of CP info to send
  std::vector<BRM::BulkSetHWMArg> fHWMInfo;    // Collection of HWM info to send
  std::vector<std::string> fCritErrMsgs;       // Collection of CRIT ERRs
  std::string fRptFileName;                    // Name of BRM report file
  std::ofstream fRptFile;                      // BRM report file that is generated
  std::vector<BRM::FileInfo> fFileInfo;        // Column files to flush from FDcache
  std::vector<BRM::FileInfo> fDctnryFileInfo;  // Dct files to flush from FDcache
};

}  // namespace WriteEngine