/*
   Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#include <ndb_global.h>
#include <NdbOut.hpp>
#include "NdbImportImpl.hpp"

typedef NdbImportImpl::JobState JobState;
typedef NdbImportImpl::TeamState TeamState;

NdbImport::NdbImport() :
  m_impl(*new NdbImportImpl(*this))
{
}

NdbImport::NdbImport(NdbImportImpl& impl) :
  m_impl(impl)
{
}

NdbImport::~NdbImport()
{
  NdbImportImpl* impl = &m_impl;
  if (this != impl)
    delete impl;
}

// csv spec

NdbImport::OptCsv::OptCsv()
{
  m_fields_terminated_by = "\\t";
  m_fields_enclosed_by = 0;
  m_fields_optionally_enclosed_by = 0;
  m_fields_escaped_by = "\\\\";
#ifndef _WIN32
  m_lines_terminated_by = "\\n";
#else
  m_lines_terminated_by = "\\r\\n";
#endif
}

// opt

NdbImport::Opt::Opt()
{
  m_connections = 1;
  m_database = 0;
  m_state_dir = ".";
  m_keep_state = false;
  m_stats = false;
  m_table = 0;
  m_input_type = "csv";
  m_input_file = 0;
  m_input_workers = 4;
  m_output_type = "ndb";
  m_output_workers = 2;
  m_db_workers = 4;
  m_ignore_lines = 0;
  m_max_rows = 0;
  m_result_file = 0;
  m_reject_file = 0;
  m_rowmap_file = 0;
  m_stopt_file = 0;
  m_stats_file = 0;
  m_continue = false;
  m_resume = false;
  m_monitor = 2;
  m_ai_prefetch_sz = 1024;
  m_ai_increment = 1;
  m_ai_offset = 1;
  m_no_asynch = false;
  m_no_hint = false;
  m_pagesize = 4096;
  m_pagecnt = 0;
  m_pagebuffer = 500000;
  m_rowbatch = 0;
  m_rowbytes = 500000;
  m_opbatch = 500;
  m_opbytes = 0;
  m_polltimeout = 1000;
  m_temperrors = 0;
  m_tempdelay = 10;
  m_rowswait = 10;
  m_idlespin = 0;
  m_idlesleep = 1;
  m_checkloop = 100;
  m_alloc_chunk = 20;
  m_rejects = 0;
  // character set
  m_charset_name = "binary";
  m_charset = 0;
  // csv options
  m_csvopt = 0;
  // debug options
  m_log_level = 0;
  m_abort_on_error = false;
  m_errins_type = 0;
  m_errins_delay = 1000;
}

int
NdbImport::set_opt(Opt& opt)
{
  NdbImportUtil& util = m_impl.m_util;
  NdbImportCsv& csv = m_impl.m_csv;
  // XXX clean this up (map strings to enums)
  if (opt.m_input_type != 0)
  {
    const char* valid[] = { "csv", "random", 0 };
    const char** p = valid;
    while (*p != 0 && strcmp(*p, opt.m_input_type) != 0)
      p++;
    if (*p == 0)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "invalid input-type %s", opt.m_input_type);
      return -1;
    }
    if (opt.m_input_workers < 1)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "number of input workers must be >= 1");
      return -1;
    }
    if (strcmp(opt.m_input_type, "csv") == 0 &&
        opt.m_input_workers < 2)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "number of csv input workers must be >= 2");
      return -1;
    }
    if (strcmp(opt.m_input_type, "random") == 0 &&
        opt.m_rowbatch == 0)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "input type random requires nonzero --rowbatch");
      return -1;
    }
  }
  if (opt.m_output_type != 0)
  {
    const char* valid[] = { "ndb", "null", 0 };
    const char** p = valid;
    while (*p != 0 && strcmp(*p, opt.m_output_type) != 0)
      p++;
    if (*p == 0)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "invalid output-type %s", opt.m_output_type);
      return -1;
    }
    if (opt.m_output_workers < 1)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "number of output workers must be >= 1");
      return -1;
    }
    if (strcmp(opt.m_output_type, "ndb") == 0 &&
        opt.m_db_workers < 1)
    {
      util.set_error_usage(util.c_error, __LINE__,
                           "number of db workers must be >= 1");
      return -1;
    }
  }
  if (opt.m_pagesize == 0)
  {
    util.set_error_usage(util.c_error, __LINE__,
                         "option --pagesize must be non-zero");
    return -1;
  }
  if (opt.m_pagebuffer != 0)
  {
    opt.m_pagecnt = (opt.m_pagebuffer + opt.m_pagesize - 1) / opt.m_pagesize;
  }
  if (opt.m_opbatch == 0)
  {
    util.set_error_usage(util.c_error, __LINE__,
                         "option --opbatch must be non-zero");
    return -1;
  }
  if (opt.m_ai_prefetch_sz == 0 ||
      opt.m_ai_increment == 0 ||
      opt.m_ai_offset == 0)
  {
    util.set_error_usage(util.c_error, __LINE__,
                         "invalid autoincrement options");
    return -1;
  }
  if (opt.m_alloc_chunk == 0)
  {
    util.set_error_usage(util.c_error, __LINE__,
                         "option --alloc-chunk must be non-zero");
    return -1;
  }
  // character set
  require(opt.m_charset_name != 0);
  opt.m_charset = get_charset_by_name(opt.m_charset_name, MYF(0));
  if (opt.m_charset == 0)
  {
    util.set_error_usage(util.c_error, __LINE__,
                         "unknown character set: %s", opt.m_charset_name);
    return -1;
  }
  // csv options
  NdbImportCsv::Spec csvspec;
  if (csv.set_spec(csvspec, opt.m_optcsv, OptCsv::ModeInput) == -1)
  {
    require(util.has_error());
    return -1;
  }
  util.c_opt = opt;
  return 0;
}

// connect

int
NdbImport::do_connect()
{
  if (m_impl.do_connect() == -1)
    return -1;
  if (m_impl.get_nodes(m_impl.c_nodes) == -1)
    return -1;
  return 0;
}

void
NdbImport::do_disconnect()
{
  m_impl.do_disconnect();
}

// table

int
NdbImport::add_table(const char* database, const char* table, uint& tabid)
{
  return m_impl.add_table(database, table, tabid, m_impl.m_error);
}

int
NdbImport::remove_table(const uint table_id)
{
  return m_impl.remove_table(table_id);
}

// job

NdbImport::JobStats::JobStats()
{
  m_rows = 0;
  m_reject = 0;
  m_runtime = 0;
  m_rowssec = 0;
  m_new_rows = 0;
  m_new_reject = 0;
  m_temperrors = 0;
}

NdbImport::Job::Job(NdbImport& imp) :
  m_imp(imp)
{
  m_jobno = Inval_uint;
  m_runno = Inval_uint;
  m_status = JobStatus::Status_null;
  m_str_status = g_str_status(m_status);
  m_teamcnt = 0;
  m_teams = 0;
}

NdbImport::Job::~Job()
{
  if (m_teams != 0)
  {
    for (uint i = 0; i < m_teamcnt; i++)
      delete m_teams[i];
    delete [] m_teams;
  }
}

int
NdbImport::Job::do_create()
{
  require(m_status == JobStatus::Status_null);
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.create_job();
  m_jobno = jobImpl->m_jobno;
  m_teamcnt = jobImpl->m_teamcnt;
  m_teams = new Team* [m_teamcnt];
  for (uint i = 0; i < m_teamcnt; i++)
    m_teams[i] = new Team(*this, i);
  m_status = JobStatus::Status_created;
  return 0;
}

int
NdbImport::Job::do_start()
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  impl.start_job(jobImpl);
  return 0;
}

int
NdbImport::Job::do_stop()
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  impl.stop_job(jobImpl);
  return 0;
}

int
NdbImport::Job::do_wait()
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  impl.wait_job(jobImpl);
  return 0;
}

void
NdbImport::Job::do_destroy()
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  impl.destroy_job(jobImpl);
  m_jobno = Inval_uint;
}
 
int
NdbImport::Job::add_table(const char* database,
                          const char* table,
                          uint& tabid)
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  return jobImpl->add_table(database, table, tabid);
}

int
NdbImport::Job::remove_table(const uint table_id)
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  return jobImpl->remove_table(table_id);
}

void
NdbImport::Job::set_table(uint tabid)
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  jobImpl->set_table(tabid);
}

bool
NdbImport::Job::has_error() const
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportUtil& util = impl.m_util;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  return util.has_error(jobImpl->m_error);
}

const Error&
NdbImport::Job::get_error() const
{
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  return jobImpl->m_error;
}

/*
 * Set job and teams status and various statistics.  Job status
 * reflects the implementation job state but is not identical to it.
 * Job state controls job flow and there is no error state because
 * the flow must be completed normally in any case.  Whereas job
 * status includes error statuses (resumable or not).
 */
void
NdbImport::Job::get_status()
{
  if (m_status == JobStatus::Status_null)
  {
    // job not yet created
    return;
  }
  NdbImportImpl& impl = m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_jobno);
  switch (jobImpl->m_state) {
  case JobState::State_null:
    require(false);
    break;
  case JobState::State_created:
    m_status = JobStatus::Status_created;
    break;
  case JobState::State_starting:
    m_status = JobStatus::Status_starting;
    break;
  case JobState::State_running:
  case JobState::State_stop:
  case JobState::State_stopped:
    m_status = JobStatus::Status_running;
    break;
  case JobState::State_done:
    m_status = JobStatus::Status_success;
    break;
  }
  m_runno = jobImpl->m_runno;
  // from all resumed runs
  m_stats.m_rows = jobImpl->m_old_rows + jobImpl->m_new_rows;
  m_stats.m_reject = jobImpl->m_old_reject + jobImpl->m_new_reject;
  m_stats.m_runtime = jobImpl->m_old_runtime + jobImpl->m_new_runtime;
  if (m_stats.m_runtime == 0)
    m_stats.m_runtime = 1;
  m_stats.m_rowssec = (m_stats.m_rows * 1000) / m_stats.m_runtime;
  // from latest run
  m_stats.m_new_rows = jobImpl->m_new_rows;
  m_stats.m_new_reject = jobImpl->m_new_reject;
  m_stats.m_temperrors = jobImpl->m_errormap.get_sum();
  m_stats.m_errormap = jobImpl->m_errormap.m_map;
  // check for errors
  if (jobImpl->has_error())
  {
    m_status = JobStatus::Status_error;
    if (jobImpl->m_fatal)
      m_status = JobStatus::Status_fatal;
  }
  m_str_status = g_str_status(m_status);
}

NdbImport::Team::Team(const Job& job, uint teamno) :
  m_job(job),
  m_teamno(teamno)
{
  m_status = TeamStatus::Status_null;
  m_str_status = g_str_status(m_status);
}

const char*
NdbImport::Team::get_name()
{
  NdbImportImpl& impl = m_job.m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_job.m_jobno);
  NdbImportImpl::Team* teamImpl = jobImpl->m_teams[m_teamno];
  return teamImpl->m_name.str();
}

bool
NdbImport::Team::has_error() const
{
  NdbImportImpl& impl = m_job.m_imp.m_impl;
  NdbImportUtil& util = impl.m_util;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_job.m_jobno);
  NdbImportImpl::Team* teamImpl = jobImpl->m_teams[m_teamno];
  return util.has_error(teamImpl->m_error);
}

const NdbImport::Error&
NdbImport::Team::get_error() const
{
  NdbImportImpl& impl = m_job.m_imp.m_impl;
  NdbImportImpl::Job* jobImpl = impl.find_job(m_job.m_jobno);
  NdbImportImpl::Team* teamImpl = jobImpl->m_teams[m_teamno];
  return teamImpl->m_error;
}

const char*
NdbImport::g_str_status(JobStatus::Status status)
{
  const char* str = 0;
  switch (status) {
  case JobStatus::Status_null:
    str = "null";
    break;
  case JobStatus::Status_created:
    str = "created";
    break;
  case JobStatus::Status_starting:
    str = "starting";
    break;
  case JobStatus::Status_running:
    str = "running";
    break;
  case JobStatus::Status_success:
    str = "success";
    break;
  case JobStatus::Status_error:
    str = "error";
    break;
  case JobStatus::Status_fatal:
    str = "fatal";
    break;
  }
  require(str != 0);
  return str;
}

const char*
NdbImport::g_str_status(TeamStatus::Status status)
{
  const char* str = 0;
  switch (status) {
  case TeamStatus::Status_null:
    str = "null";
    break;
  }
  require(str != 0);
  return str;
}

// error

NdbImport::Error::Error()
{
  type = Type_noerror;
  code = 0;
  line = 0;
  text[0] = 0;
}

const char*
NdbImport::Error::gettypetext() const
{
  const char* typetext = "";
  switch (type) {
  case Type_noerror:
    typetext = "noerror";
    break;
  case Type_usage:
    typetext = "usage";
    break;
  case Type_gen:
    typetext = "gen";
    break;
  case Type_alloc:
    typetext = "alloc";
    break;
  case Type_mgm:
    typetext = "mgm";
    break;
  case Type_con:
    typetext = "con";
    break;
  case Type_ndb:
    typetext = "ndb";
    break;
  case Type_os:
    typetext = "os";
    break;
  case Type_data:
    typetext = "data";
    break;
  };
  return typetext;
}

bool
NdbImport::has_error() const
{
  NdbImportImpl& impl = m_impl;
  NdbImportUtil& util = impl.m_util;
  return util.has_error();
}

const NdbImport::Error&
NdbImport::get_error() const
{
  NdbImportImpl& impl = m_impl;
  NdbImportUtil& util = impl.m_util;
  return util.c_error;
}

NdbOut&
operator<<(NdbOut& out, const NdbImport::Error& error)
{
  const char* typetext = error.gettypetext();
  out << "error[" << typetext << "-" << error.code << "]";
  if (error.text[0] != 0)
    out << ": " << error.text;
  out << " (source:" << error.line << ")";
  return out;
}

void
NdbImport::set_stop_all()
{
  NdbImportUtil::g_stop_all = true;
}