/* Copyright (C) 2004, 2005 MySQL AB

   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 */

#include <NDBT.hpp>
#include <NdbApi.hpp>
#include <NdbRestarter.hpp>
#include <HugoOperations.hpp>
#include <HugoTransactions.hpp>
#include <UtilTransactions.hpp>
#include <signaldata/DumpStateOrd.hpp>

#include <getarg.h>
#include <InputStream.hpp>

struct CASE 
{
  bool start_row;
  bool end_row;
  bool curr_row;
  const char * op1;
  const char * op2;
  const char * op3;
  int val;
};

static CASE g_op_types[] =
{
  { false, true,  false, "INS", 0,     0,     0 }, // 0x001 a
  { true,  true,  false, "UPD", 0,     0,     0 }, // 0x002 d
  { true,  false, false, "DEL", 0,     0,     0 }, // 0x004 g

  { false, true,  false, "INS", "UPD", 0,     0 }, // 0x008 b
  { false, false, false, "INS", "DEL", 0,     0 }, // 0x010 c
  { true,  true,  false, "UPD", "UPD", 0,     0 }, // 0x020 e
  { true,  false, false, "UPD", "DEL", 0,     0 }, // 0x040 f
  { true,  true,  false, "DEL", "INS", 0,     0 }, // 0x080 h

  { false, true,  false, "INS", "DEL", "INS", 0 }, // 0x100 i
  { true,  false, false, "DEL", "INS", "DEL", 0 }  // 0x200 j
};
const size_t OP_COUNT = (sizeof(g_op_types)/sizeof(g_op_types[0]));

static Ndb* g_ndb = 0;
static CASE* g_ops;
static Ndb_cluster_connection *g_cluster_connection= 0;
static HugoOperations* g_hugo_ops;
static int g_use_ops = 1 | 2 | 4;
static int g_cases = 0x1;
static int g_case_loop = 2;
static int g_rows = 10;
static int g_setup_tables = 1;
static int g_one_op_at_a_time = 0;
static const char * g_tablename = "T1";
static const NdbDictionary::Table* g_table = 0;
static NdbRestarter g_restarter;

static int init_ndb(int argc, char** argv);
static int parse_args(int argc, char** argv);
static int connect_ndb();
static int drop_all_tables();
static int load_table();
static int pause_lcp(int error);
static int do_op(int row);
static int continue_lcp(int error = 0);
static int commit();
static int restart();
static int validate();

#define require(x) { bool b = x; if(!b){g_err << __LINE__ << endl; abort();}}

int 
main(int argc, char ** argv){
  ndb_init();
  require(!init_ndb(argc, argv));
  if(parse_args(argc, argv))
    return -1;
  require(!connect_ndb());
  
  if(g_setup_tables){
    require(!drop_all_tables());
    
    if(NDBT_Tables::createTable(g_ndb, g_tablename) != 0){
      exit(-1);
    }
  }
  
  g_table = g_ndb->getDictionary()->getTable(g_tablename);
  if(g_table == 0){
    g_err << "Failed to retreive table: " << g_tablename << endl;
    exit(-1);
  }
  require(g_hugo_ops = new HugoOperations(* g_table));
  require(!g_hugo_ops->startTransaction(g_ndb));
  
  g_ops= new CASE[g_rows];
  
  const int use_ops = g_use_ops;
  for(size_t i = 0; i<OP_COUNT; i++)
  {
    if(g_one_op_at_a_time){
      while(i < OP_COUNT && (use_ops & (1 << i)) == 0) i++;
      if(i == OP_COUNT)
	break;
      ndbout_c("-- loop\noperation: %c use_ops: %x", 'a'+i, use_ops);
      g_use_ops = (1 << i);
    } else {
      i = OP_COUNT - 1;
    }
    
    size_t test_case = 0;
    if((1 << test_case++) & g_cases)
    {
      for(size_t tl = 0; tl<g_case_loop; tl++){
	g_info << "Performing all ops wo/ inteference of LCP" << endl;
	
	g_info << "Testing pre LCP operations, ZLCP_OP_WRITE_RT_BREAK" << endl;
	g_info << "  where ZLCP_OP_WRITE_RT_BREAK is "
	  " finished before SAVE_PAGES" << endl;
	require(!load_table());
	require(!pause_lcp(5900));
	for(size_t j = 0; j<g_rows; j++){
	  require(!do_op(j));
	}
	require(!continue_lcp(5900));
	require(!commit());
	require(!pause_lcp(5900));
	require(!restart());
	require(!validate());
      }  
    }
    
    if((1 << test_case++) & g_cases)
    {
      for(size_t tl = 0; tl<g_case_loop; tl++){
	g_info << "Testing pre LCP operations, ZLCP_OP_WRITE_RT_BREAK" << endl;
	g_info << "  where ZLCP_OP_WRITE_RT_BREAK is finished after SAVE_PAGES"
	       << endl;
	require(!load_table());
	require(!pause_lcp(5901));
	for(size_t j = 0; j<g_rows; j++){
	  require(!do_op(j));
	}
	require(!continue_lcp(5901));
	require(!commit());
	require(!pause_lcp(5900));
	require(!restart());
	require(!validate());
      }    
    }

    if((1 << test_case++) & g_cases)
    {
      for(size_t tl = 0; tl<g_case_loop; tl++){
	g_info << "Testing pre LCP operations, undo-ed at commit" << endl;
	require(!load_table());
	require(!pause_lcp(5902));
	for(size_t j = 0; j<g_rows; j++){
	  require(!do_op(j));
	}
	require(!continue_lcp(5902));
	require(!commit());
	require(!continue_lcp(5903));
	require(!pause_lcp(5900));
	require(!restart());
	require(!validate());
      }
    }
    
    if((1 << test_case++) & g_cases)
    {
      for(size_t tl = 0; tl<g_case_loop; tl++){
	g_info << "Testing prepared during LCP and committed after" << endl;
	require(!load_table());
	require(!pause_lcp(5904));    // Start LCP, but don't save pages
	for(size_t j = 0; j<g_rows; j++){
	  require(!do_op(j));
	}
	require(!continue_lcp(5904)); // Start ACC save pages
	require(!pause_lcp(5900));    // Next LCP
	require(!commit());
	require(!restart());
	require(!validate());
      }
    }
  }
}

static int init_ndb(int argc, char** argv)
{
  ndb_init();
  return 0;
}

static int parse_args(int argc, char** argv)
{
  size_t i;
  char * ops= 0, *cases=0;
  struct getargs args[] = {
    { "records", 0, arg_integer, &g_rows, "Number of records", "records" },
    { "operations", 'o', arg_string, &ops, "Operations [a-h]", 0 },
    { "1", '1', arg_flag, &g_one_op_at_a_time, "One op at a time", 0 },
    { "0", '0', arg_negative_flag, &g_one_op_at_a_time, "All ops at once", 0 },
    { "cases", 'c', arg_string, &cases, "Cases [a-c]", 0 },
    { 0, 't', arg_flag, &g_setup_tables, "Create table", 0 },
    { 0, 'u', arg_negative_flag, &g_setup_tables, "Dont create table", 0 }
  };
  
  int optind= 0;
  const int num_args = sizeof(args)/sizeof(args[0]);
  if(getarg(args, num_args, argc, (const char**)argv, &optind)) {
    arg_printusage(args, num_args, argv[0], " tabname1\n");
    ndbout_c("\n -- Operations [a-%c] = ", 'a'+OP_COUNT-1);
    for(i = 0; i<OP_COUNT; i++){
      ndbout_c("\t%c = %s %s", 
	       'a'+i, g_op_types[i].op1,
	       g_op_types[i].op2 ? g_op_types[i].op2 : "");
    }
    return -1;
  }
  
  if(ops != 0){
    g_use_ops = 0;
    char * s = ops;
    while(* s)
      g_use_ops |= (1 << ((* s++) - 'a'));
  }

  if(cases != 0){
    g_cases = 0;
    char * s = cases;
    while(* s)
      g_cases |= (1 << ((* s++) - 'a'));
  }
  
  ndbout_c("table: %s", g_tablename);
  printf("operations: ");
  for(i = 0; i<OP_COUNT; i++)
    if(g_use_ops & (1 << i))
      printf("%c", 'a'+i);
  printf("\n");
  
  printf("test cases: ");
  for(i = 0; i<3; i++)
    if(g_cases & (1 << i))
      printf("%c", '1'+i);
  printf("\n");
  printf("-------------\n");  
  return 0;
}

static int connect_ndb()
{
  g_cluster_connection = new Ndb_cluster_connection();
  if(g_cluster_connection->connect(12, 5, 1) != 0)
  {
    return 1;
  }

  g_ndb = new Ndb(g_cluster_connection, "TEST_DB");
  g_ndb->init(256);
  if(g_ndb->waitUntilReady(30) == 0){
    return 0;
//    int args[] = { DumpStateOrd::DihMaxTimeBetweenLCP };
//    return g_restarter.dumpStateAllNodes(args, 1);
  }
  return -1;
}

static int disconnect_ndb()
{
  delete g_ndb;
  delete g_cluster_connection;
  g_ndb = 0;
  g_table = 0;
  g_cluster_connection= 0;
  return 0;
}

static int drop_all_tables()
{
  NdbDictionary::Dictionary * dict = g_ndb->getDictionary();
  require(dict);

  BaseString db = g_ndb->getDatabaseName();
  BaseString schema = g_ndb->getSchemaName();

  NdbDictionary::Dictionary::List list;
  if (dict->listObjects(list, NdbDictionary::Object::TypeUndefined) == -1){
      g_err << "Failed to list tables: " << endl
	    << dict->getNdbError() << endl;
      return -1;
  }
  for (unsigned i = 0; i < list.count; i++) {
    NdbDictionary::Dictionary::List::Element& elt = list.elements[i];
    switch (elt.type) {
    case NdbDictionary::Object::SystemTable:
    case NdbDictionary::Object::UserTable:
      g_ndb->setDatabaseName(elt.database);
      g_ndb->setSchemaName(elt.schema);
      if(dict->dropTable(elt.name) != 0){
	g_err << "Failed to drop table: " 
	      << elt.database << "/" << elt.schema << "/" << elt.name <<endl;
	g_err << dict->getNdbError() << endl;
	return -1;
      }
      break;
    case NdbDictionary::Object::UniqueHashIndex:
    case NdbDictionary::Object::OrderedIndex:
    case NdbDictionary::Object::HashIndexTrigger:
    case NdbDictionary::Object::IndexTrigger:
    case NdbDictionary::Object::SubscriptionTrigger:
    case NdbDictionary::Object::ReadOnlyConstraint:
    default:
      break;
    }
  }
  
  g_ndb->setDatabaseName(db.c_str());
  g_ndb->setSchemaName(schema.c_str());
  
  return 0;
}

static int load_table()
{
  UtilTransactions clear(* g_table);
  require(!clear.clearTable(g_ndb));
  
  HugoOperations ops(* g_table);
  require(!ops.startTransaction(g_ndb));
  size_t op = 0;
  size_t rows = 0;
  size_t uncommitted = 0;
  bool prepared = false;
  for(size_t i = 0; i<g_rows; i++){
    for(op %= OP_COUNT; !((1 << op) & g_use_ops); op = (op + 1) % OP_COUNT);
    g_ops[i] = g_op_types[op++];
    if(g_ops[i].start_row){
      g_ops[i].curr_row = true;
      g_ops[i].val = rand();
      require(!ops.pkInsertRecord(g_ndb, i, 1, g_ops[i].val));
      uncommitted++;
    } else {
      g_ops[i].curr_row = false;
    }
    if(uncommitted >= 100){
      require(!ops.execute_Commit(g_ndb));
      require(!ops.getTransaction()->restart());
      rows += uncommitted;
      uncommitted = 0;
    }
  }
  if(uncommitted)
    require(!ops.execute_Commit(g_ndb));

  require(!ops.closeTransaction(g_ndb));
  rows += uncommitted;
  g_info << "Inserted " << rows << " rows" << endl;
  return 0;
}

static int pause_lcp(int error)
{
  int nodes = g_restarter.getNumDbNodes();

  int filter[] = { 15, NDB_MGM_EVENT_CATEGORY_INFO, 0 };
  int fd = ndb_mgm_listen_event(g_restarter.handle, filter);
  require(fd >= 0);
  require(!g_restarter.insertErrorInAllNodes(error));
  int dump[] = { DumpStateOrd::DihStartLcpImmediately };
  require(!g_restarter.dumpStateAllNodes(dump, 1));
  
  char *tmp;
  char buf[1024];
  SocketInputStream in(fd, 1000);
  int count = 0;
  do {
    tmp = in.gets(buf, 1024);
    if(tmp)
    {
      int id;
      if(sscanf(tmp, "%*[^:]: LCP: %d ", &id) == 1 && id == error &&
	 --nodes == 0){
	close(fd);
	return 0;
      }
    }
  } while(count++ < 30);
  
  close(fd);
  return -1;
}

static int do_op(int row)
{
  HugoOperations & ops = * g_hugo_ops;
  if(strcmp(g_ops[row].op1, "INS") == 0){
    require(!g_ops[row].curr_row);
    g_ops[row].curr_row = true;
    g_ops[row].val = rand();
    require(!ops.pkInsertRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op1, "UPD") == 0){
    require(g_ops[row].curr_row);
    g_ops[row].val = rand();
    require(!ops.pkUpdateRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op1, "DEL") == 0){
    require(g_ops[row].curr_row);    
    g_ops[row].curr_row = false;
    require(!ops.pkDeleteRecord(g_ndb, row, 1));
  }

  require(!ops.execute_NoCommit(g_ndb));
  
  if(g_ops[row].op2 == 0){
  } else if(strcmp(g_ops[row].op2, "INS") == 0){
    require(!g_ops[row].curr_row);
    g_ops[row].curr_row = true;
    g_ops[row].val = rand();
    require(!ops.pkInsertRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op2, "UPD") == 0){
    require(g_ops[row].curr_row);
    g_ops[row].val = rand();
    require(!ops.pkUpdateRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op2, "DEL") == 0){
    require(g_ops[row].curr_row);    
    g_ops[row].curr_row = false;    
    require(!ops.pkDeleteRecord(g_ndb, row, 1));
  }
  
  if(g_ops[row].op2 != 0)
    require(!ops.execute_NoCommit(g_ndb));  

  if(g_ops[row].op3 == 0){
  } else if(strcmp(g_ops[row].op3, "INS") == 0){
    require(!g_ops[row].curr_row);
    g_ops[row].curr_row = true;
    g_ops[row].val = rand();
    require(!ops.pkInsertRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op3, "UPD") == 0){
    require(g_ops[row].curr_row);
    g_ops[row].val = rand();
    require(!ops.pkUpdateRecord(g_ndb, row, 1, g_ops[row].val));
  } else if(strcmp(g_ops[row].op3, "DEL") == 0){
    require(g_ops[row].curr_row);    
    g_ops[row].curr_row = false;    
    require(!ops.pkDeleteRecord(g_ndb, row, 1));
  }
  
  if(g_ops[row].op3 != 0)
    require(!ops.execute_NoCommit(g_ndb));  

  return 0;
}

static int continue_lcp(int error)
{
  int filter[] = { 15, NDB_MGM_EVENT_CATEGORY_INFO, 0 };
  int fd = -1;
  if(error){
    fd = ndb_mgm_listen_event(g_restarter.handle, filter);
    require(fd >= 0);
  }

  int args[] = { DumpStateOrd::LCPContinue };
  if(g_restarter.dumpStateAllNodes(args, 1) != 0)
    return -1;
  
  if(error){
    char *tmp;
    char buf[1024];
    SocketInputStream in(fd, 1000);
    int count = 0;
    int nodes = g_restarter.getNumDbNodes();
    do {
      tmp = in.gets(buf, 1024);
      if(tmp)
      {
	int id;
	if(sscanf(tmp, "%*[^:]: LCP: %d ", &id) == 1 && id == error &&
	   --nodes == 0){
	  close(fd);
	  return 0;
	}
      }
    } while(count++ < 30);
    
    close(fd);
  }
  return 0;
}

static int commit()
{
  HugoOperations & ops = * g_hugo_ops;  
  int res = ops.execute_Commit(g_ndb);
  if(res == 0){
    return ops.getTransaction()->restart();
  }
  return res;
}

static int restart()
{
  g_info << "Restarting cluster" << endl;
  g_hugo_ops->closeTransaction(g_ndb);
  disconnect_ndb();
  delete g_hugo_ops;
  
  require(!g_restarter.restartAll());
  require(!g_restarter.waitClusterStarted(30));
  require(!connect_ndb());
  
  g_table = g_ndb->getDictionary()->getTable(g_tablename);
  require(g_table);
  require(g_hugo_ops = new HugoOperations(* g_table));
  require(!g_hugo_ops->startTransaction(g_ndb));
  return 0;
}

static int validate()
{
  HugoOperations ops(* g_table);
  for(size_t i = 0; i<g_rows; i++){
    require(g_ops[i].curr_row == g_ops[i].end_row);
    require(!ops.startTransaction(g_ndb));
    ops.pkReadRecord(g_ndb, i, 1);
    int res = ops.execute_Commit(g_ndb);
    if(g_ops[i].curr_row){
      require(res == 0 && ops.verifyUpdatesValue(g_ops[i].val) == 0);
    } else {
      require(res == 626);
    }
    ops.closeTransaction(g_ndb);
  }

  for(size_t j = 0; j<10; j++){
    UtilTransactions clear(* g_table);
    require(!clear.clearTable(g_ndb));
    
    HugoTransactions trans(* g_table);
    require(trans.loadTable(g_ndb, 1024) == 0);
  }
  return 0;
}