~drizzle-trunk/drizzle/development

/* Copyright (C) 2000-2006 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/*

**	   mysqlimport.c  - Imports all given files

**			    into a table(s).

**

**			   *************************

**			   *			   *

**			   * AUTHOR: Monty & Jani  *

**			   * DATE:   June 24, 1997 *

**			   *			   *

**			   *************************

*/

#define IMPORT_VERSION "3.7"

#include "client_priv.h"

#include "drizzle_version.h"

#ifdef HAVE_LIBPTHREAD

#include <my_pthread.h>

#endif

/* Global Thread counter */

uint counter;

#ifdef HAVE_LIBPTHREAD

pthread_mutex_t counter_mutex;

pthread_cond_t count_threshhold;

#endif

static void db_error_with_table(MYSQL *mysql, char *table);

static void db_error(MYSQL *mysql);

static char *field_escape(char *to,const char *from,uint length);

static char *add_load_option(char *ptr,const char *object,

			     const char *statement);

static bool	verbose=0,lock_tables=0,ignore_errors=0,opt_delete=0,

		replace=0,silent=0,ignore=0,opt_compress=0,

                opt_low_priority= 0, tty_password= 0;

static bool debug_info_flag= 0, debug_check_flag= 0;

static uint opt_use_threads=0, opt_local_file=0, my_end_arg= 0;

static char	*opt_password=0, *current_user=0,

		*current_host=0, *current_db=0, *fields_terminated=0,

		*lines_terminated=0, *enclosed=0, *opt_enclosed=0,

		*escaped=0, *opt_columns=0, 

		*default_charset= (char*) MYSQL_DEFAULT_CHARSET_NAME;

static uint     opt_mysql_port= 0, opt_protocol= 0;

static char * opt_mysql_unix_port=0;

static int64_t opt_ignore_lines= -1;

static CHARSET_INFO *charset_info= &my_charset_latin1;

#ifdef HAVE_SMEM

static char *shared_memory_base_name=0;

#endif

static struct my_option my_long_options[] =

{

  {"character-sets-dir", OPT_CHARSETS_DIR,

   "Directory where character sets are.", (char**) &charsets_dir,

   (char**) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"default-character-set", OPT_DEFAULT_CHARSET,

   "Set the default character set.", (char**) &default_charset,

   (char**) &default_charset, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"columns", 'c',

   "Use only these columns to import the data to. Give the column names in a comma separated list. This is same as giving columns to LOAD DATA INFILE.",

   (char**) &opt_columns, (char**) &opt_columns, 0, GET_STR, REQUIRED_ARG, 0, 0, 0,

   0, 0, 0},

  {"compress", 'C', "Use compression in server/client protocol.",

   (char**) &opt_compress, (char**) &opt_compress, 0, GET_BOOL, NO_ARG, 0, 0, 0,

   0, 0, 0},

  {"debug",'#', "Output debug log. Often this is 'd:t:o,filename'.", 0, 0, 0,

   GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},

  {"debug-check", OPT_DEBUG_CHECK, "Check memory and open file usage at exit.",

   (char**) &debug_check_flag, (char**) &debug_check_flag, 0,

   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"debug-info", OPT_DEBUG_INFO, "Print some debug info at exit.",

   (char**) &debug_info_flag, (char**) &debug_info_flag,

   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"delete", 'd', "First delete all rows from table.", (char**) &opt_delete,

   (char**) &opt_delete, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"fields-terminated-by", OPT_FTB,

   "Fields in the textfile are terminated by ...", (char**) &fields_terminated,

   (char**) &fields_terminated, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"fields-enclosed-by", OPT_ENC,

   "Fields in the importfile are enclosed by ...", (char**) &enclosed,

   (char**) &enclosed, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"fields-optionally-enclosed-by", OPT_O_ENC,

   "Fields in the i.file are opt. enclosed by ...", (char**) &opt_enclosed,

   (char**) &opt_enclosed, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"fields-escaped-by", OPT_ESC, "Fields in the i.file are escaped by ...",

   (char**) &escaped, (char**) &escaped, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0,

   0, 0},

  {"force", 'f', "Continue even if we get an sql-error.",

   (char**) &ignore_errors, (char**) &ignore_errors, 0, GET_BOOL, NO_ARG, 0, 0,

   0, 0, 0, 0},

  {"help", '?', "Displays this help and exits.", 0, 0, 0, GET_NO_ARG, NO_ARG,

   0, 0, 0, 0, 0, 0},

  {"host", 'h', "Connect to host.", (char**) &current_host,

   (char**) &current_host, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"ignore", 'i', "If duplicate unique key was found, keep old row.",

   (char**) &ignore, (char**) &ignore, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"ignore-lines", OPT_IGN_LINES, "Ignore first n lines of data infile.",

   (char**) &opt_ignore_lines, (char**) &opt_ignore_lines, 0, GET_LL,

   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"lines-terminated-by", OPT_LTB, "Lines in the i.file are terminated by ...",

   (char**) &lines_terminated, (char**) &lines_terminated, 0, GET_STR,

   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"local", 'L', "Read all files through the client.", (char**) &opt_local_file,

   (char**) &opt_local_file, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"lock-tables", 'l', "Lock all tables for write (this disables threads).",

    (char**) &lock_tables, (char**) &lock_tables, 0, GET_BOOL, NO_ARG, 

    0, 0, 0, 0, 0, 0},

  {"low-priority", OPT_LOW_PRIORITY,

   "Use LOW_PRIORITY when updating the table.", (char**) &opt_low_priority,

   (char**) &opt_low_priority, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"password", 'p',

   "Password to use when connecting to server. If password is not given it's asked from the tty.",

   0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},

  {"port", 'P', "Port number to use for connection or 0 for default to, in "

   "order of preference, my.cnf, $MYSQL_TCP_PORT, "

#if MYSQL_PORT_DEFAULT == 0

   "/etc/services, "

#endif

   "built-in default (" STRINGIFY_ARG(MYSQL_PORT) ").",

   (char**) &opt_mysql_port,

   (char**) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,

   0},

  {"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",

   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"replace", 'r', "If duplicate unique key was found, replace old row.",

   (char**) &replace, (char**) &replace, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

#ifdef HAVE_SMEM

  {"shared-memory-base-name", OPT_SHARED_MEMORY_BASE_NAME,

   "Base name of shared memory.", (char**) &shared_memory_base_name, (char**) &shared_memory_base_name,

   0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

#endif

  {"silent", 's', "Be more silent.", (char**) &silent, (char**) &silent, 0,

   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"socket", 'S', "Socket file to use for connection.",

   (char**) &opt_mysql_unix_port, (char**) &opt_mysql_unix_port, 0, GET_STR,

   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

  {"use-threads", OPT_USE_THREADS,

   "Load files in parallel. The argument is the number "

   "of threads to use for loading data.",

   (char**) &opt_use_threads, (char**) &opt_use_threads, 0, 

   GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

#ifndef DONT_ALLOW_USER_CHANGE

  {"user", 'u', "User for login if not current user.", (char**) &current_user,

   (char**) &current_user, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},

#endif

  {"verbose", 'v', "Print info about the various stages.", (char**) &verbose,

   (char**) &verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},

  {"version", 'V', "Output version information and exit.", 0, 0, 0, GET_NO_ARG,

   NO_ARG, 0, 0, 0, 0, 0, 0},

  { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}

};

static const char *load_default_groups[]= { "mysqlimport","client",0 };

#include <help_start.h>

static void print_version(void)

{

  printf("%s  Ver %s Distrib %s, for %s (%s)\n" ,my_progname,

	  IMPORT_VERSION, MYSQL_SERVER_VERSION,SYSTEM_TYPE,MACHINE_TYPE);

}

static void usage(void)

{

  print_version();

  puts("Copyright (C) 2000-2006 MySQL AB");

  puts("This software comes with ABSOLUTELY NO WARRANTY. This is free software,\nand you are welcome to modify and redistribute it under the GPL license\n");

  printf("\

Loads tables from text files in various formats.  The base name of the\n\

text file must be the name of the table that should be used.\n\

If one uses sockets to connect to the MySQL server, the server will open and\n\

read the text file directly. In other cases the client will open the text\n\

file. The SQL command 'LOAD DATA INFILE' is used to import the rows.\n");

  printf("\nUsage: %s [OPTIONS] database textfile...",my_progname);

  print_defaults("my",load_default_groups);

  my_print_help(my_long_options);

  my_print_variables(my_long_options);

}

#include <help_end.h>

static bool

get_one_option(int optid, const struct my_option *opt __attribute__((unused)),

	       char *argument)

{

  switch(optid) {

  case 'p':

    if (argument)

    {

      char *start=argument;

      my_free(opt_password,MYF(MY_ALLOW_ZERO_PTR));

      opt_password=my_strdup(argument,MYF(MY_FAE));

      while (*argument) *argument++= 'x';		/* Destroy argument */

      if (*start)

	start[1]=0;				/* Cut length of argument */

      tty_password= 0;

    }

    else

      tty_password= 1;

    break;

  case OPT_MYSQL_PROTOCOL:

    opt_protocol= find_type_or_exit(argument, &sql_protocol_typelib,

                                    opt->name);

    break;

  case 'V': print_version(); exit(0);

  case 'I':

  case '?':

    usage();

    exit(0);

  }

  return 0;

}

static int get_options(int *argc, char ***argv)

{

  int ho_error;

  if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))

    exit(ho_error);

  if (debug_info_flag)

    my_end_arg= MY_CHECK_ERROR | MY_GIVE_INFO;

  if (debug_check_flag)

    my_end_arg= MY_CHECK_ERROR;

  if (enclosed && opt_enclosed)

  {

    fprintf(stderr, "You can't use ..enclosed.. and ..optionally-enclosed.. at the same time.\n");

    return(1);

  }

  if (replace && ignore)

  {

    fprintf(stderr, "You can't use --ignore (-i) and --replace (-r) at the same time.\n");

    return(1);

  }

  if (strcmp(default_charset, charset_info->csname) &&

      !(charset_info= get_charset_by_csname(default_charset,

  					    MY_CS_PRIMARY, MYF(MY_WME))))

    exit(1);

  if (*argc < 2)

  {

    usage();

    return 1;

  }

  current_db= *((*argv)++);

  (*argc)--;

  if (tty_password)

    opt_password=get_tty_password(NullS);

  return(0);

}

static int write_to_table(char *filename, MYSQL *mysql)

{

  char tablename[FN_REFLEN], hard_path[FN_REFLEN],

       sql_statement[FN_REFLEN*16+256], *end;

  fn_format(tablename, filename, "", "", 1 | 2); /* removes path & ext. */

  if (!opt_local_file)

    strmov(hard_path,filename);

  else

    my_load_path(hard_path, filename, NULL); /* filename includes the path */

  if (opt_delete)

  {

    if (verbose)

      fprintf(stdout, "Deleting the old data from table %s\n", tablename);

#ifdef HAVE_SNPRINTF

    snprintf(sql_statement, FN_REFLEN*16+256, "DELETE FROM %s", tablename);

#else

    sprintf(sql_statement, "DELETE FROM %s", tablename);

#endif

    if (mysql_query(mysql, sql_statement))

    {

      db_error_with_table(mysql, tablename);

      return(1);

    }

  }

  to_unix_path(hard_path);

  if (verbose)

  {

    if (opt_local_file)

      fprintf(stdout, "Loading data from LOCAL file: %s into %s\n",

	      hard_path, tablename);

    else

      fprintf(stdout, "Loading data from SERVER file: %s into %s\n",

	      hard_path, tablename);

  }

  sprintf(sql_statement, "LOAD DATA %s %s INFILE '%s'",

	  opt_low_priority ? "LOW_PRIORITY" : "",

	  opt_local_file ? "LOCAL" : "", hard_path);

  end= strend(sql_statement);

  if (replace)

    end= strmov(end, " REPLACE");

  if (ignore)

    end= strmov(end, " IGNORE");

  end= strmov(strmov(end, " INTO TABLE "), tablename);

  if (fields_terminated || enclosed || opt_enclosed || escaped)

      end= strmov(end, " FIELDS");

  end= add_load_option(end, fields_terminated, " TERMINATED BY");

  end= add_load_option(end, enclosed, " ENCLOSED BY");

  end= add_load_option(end, opt_enclosed,

		       " OPTIONALLY ENCLOSED BY");

  end= add_load_option(end, escaped, " ESCAPED BY");

  end= add_load_option(end, lines_terminated, " LINES TERMINATED BY");

  if (opt_ignore_lines >= 0)

    end= strmov(int64_t10_to_str(opt_ignore_lines, 

				  strmov(end, " IGNORE "),10), " LINES");

  if (opt_columns)

    end= strmov(strmov(strmov(end, " ("), opt_columns), ")");

  *end= '\0';

  if (mysql_query(mysql, sql_statement))

  {

    db_error_with_table(mysql, tablename);

    return(1);

  }

  if (!silent)

  {

    if (mysql_info(mysql)) /* If NULL-pointer, print nothing */

    {

      fprintf(stdout, "%s.%s: %s\n", current_db, tablename,

	      mysql_info(mysql));

    }

  }

  return(0);

}

static void lock_table(MYSQL *mysql, int tablecount, char **raw_tablename)

{

  DYNAMIC_STRING query;

  int i;

  char tablename[FN_REFLEN];

  if (verbose)

    fprintf(stdout, "Locking tables for write\n");

  init_dynamic_string(&query, "LOCK TABLES ", 256, 1024);

  for (i=0 ; i < tablecount ; i++)

  {

    fn_format(tablename, raw_tablename[i], "", "", 1 | 2);

    dynstr_append(&query, tablename);

    dynstr_append(&query, " WRITE,");

  }

  if (mysql_real_query(mysql, query.str, query.length-1))

    db_error(mysql); /* We shall countinue here, if --force was given */

}

static MYSQL *db_connect(char *host, char *database,

                         char *user, char *passwd)

{

  MYSQL *mysql;

  if (verbose)

    fprintf(stdout, "Connecting to %s\n", host ? host : "localhost");

  if (!(mysql= mysql_init(NULL)))

    return 0;

  if (opt_compress)

    mysql_options(mysql,MYSQL_OPT_COMPRESS,NullS);

  if (opt_local_file)

    mysql_options(mysql,MYSQL_OPT_LOCAL_INFILE,

		  (char*) &opt_local_file);

  if (opt_protocol)

    mysql_options(mysql,MYSQL_OPT_PROTOCOL,(char*)&opt_protocol);

#ifdef HAVE_SMEM

  if (shared_memory_base_name)

    mysql_options(mysql,MYSQL_SHARED_MEMORY_BASE_NAME,shared_memory_base_name);

#endif

  if (!(mysql_real_connect(mysql,host,user,passwd,

                           database,opt_mysql_port,opt_mysql_unix_port,

                           0)))

  {

    ignore_errors=0;	  /* NO RETURN FROM db_error */

    db_error(mysql);

  }

  mysql->reconnect= 0;

  if (verbose)

    fprintf(stdout, "Selecting database %s\n", database);

  if (mysql_select_db(mysql, database))

  {

    ignore_errors=0;

    db_error(mysql);

  }

  return mysql;

}

static void db_disconnect(char *host, MYSQL *mysql)

{

  if (verbose)

    fprintf(stdout, "Disconnecting from %s\n", host ? host : "localhost");

  mysql_close(mysql);

}

static void safe_exit(int error, MYSQL *mysql)

{

  if (ignore_errors)

    return;

  if (mysql)

    mysql_close(mysql);

  exit(error);

}

static void db_error_with_table(MYSQL *mysql, char *table)

{

  my_printf_error(0,"Error: %d, %s, when using table: %s",

		  MYF(0), mysql_errno(mysql), mysql_error(mysql), table);

  safe_exit(1, mysql);

}

static void db_error(MYSQL *mysql)

{

  my_printf_error(0,"Error: %d %s", MYF(0), mysql_errno(mysql), mysql_error(mysql));

  safe_exit(1, mysql);

}

static char *add_load_option(char *ptr, const char *object,

			     const char *statement)

{

  if (object)

  {

    /* Don't escape hex constants */

    if (object[0] == '0' && (object[1] == 'x' || object[1] == 'X'))

      ptr= strxmov(ptr," ",statement," ",object,NullS);

    else

    {

      /* char constant; escape */

      ptr= strxmov(ptr," ",statement," '",NullS);

      ptr= field_escape(ptr,object,(uint) strlen(object));

      *ptr++= '\'';

    }

  }

  return ptr;

}

/*

** Allow the user to specify field terminator strings like:

** "'", "\", "\\" (escaped backslash), "\t" (tab), "\n" (newline)

** This is done by doubleing ' and add a end -\ if needed to avoid

** syntax errors from the SQL parser.

*/ 

static char *field_escape(char *to,const char *from,uint length)

{

  const char *end;

  uint end_backslashes=0; 

  for (end= from+length; from != end; from++)

  {

    *to++= *from;

    if (*from == '\\')

      end_backslashes^=1;    /* find odd number of backslashes */

    else 

    {

      if (*from == '\'' && !end_backslashes)

	*to++= *from;      /* We want a dublicate of "'" for MySQL */

      end_backslashes=0;

    }

  }

  /* Add missing backslashes if user has specified odd number of backs.*/

  if (end_backslashes)

    *to++= '\\';          

  return to;

}

int exitcode= 0;

#ifdef HAVE_LIBPTHREAD

static pthread_handler_t worker_thread(void *arg)

{

  int error;

  char *raw_table_name= (char *)arg;

  MYSQL *mysql= 0;

  if (mysql_thread_init())

    goto error;

  if (!(mysql= db_connect(current_host,current_db,current_user,opt_password)))

  {

    goto error;

  }

  if (mysql_query(mysql, "/*!40101 set @@character_set_database=binary */;"))

  {

    db_error(mysql); /* We shall countinue here, if --force was given */

    goto error;

  }

  /*

    We are not currently catching the error here.

  */

  if((error= write_to_table(raw_table_name, mysql)))

    if (exitcode == 0)

      exitcode= error;

error:

  if (mysql)

    db_disconnect(current_host, mysql);

  pthread_mutex_lock(&counter_mutex);

  counter--;

  pthread_cond_signal(&count_threshhold);

  pthread_mutex_unlock(&counter_mutex);

  my_thread_end();

  return 0;

}

#endif

int main(int argc, char **argv)

{

  int error=0;

  char **argv_to_free;

  MY_INIT(argv[0]);

  load_defaults("my",load_default_groups,&argc,&argv);

  /* argv is changed in the program */

  argv_to_free= argv;

  if (get_options(&argc, &argv))

  {

    free_defaults(argv_to_free);

    return(1);

  }

#ifdef HAVE_LIBPTHREAD

  if (opt_use_threads && !lock_tables)

  {

    pthread_t mainthread;            /* Thread descriptor */

    pthread_attr_t attr;          /* Thread attributes */

    pthread_attr_init(&attr);

    pthread_attr_setdetachstate(&attr,

                                PTHREAD_CREATE_DETACHED);

    VOID(pthread_mutex_init(&counter_mutex, NULL));

    VOID(pthread_cond_init(&count_threshhold, NULL));

    for (counter= 0; *argv != NULL; argv++) /* Loop through tables */

    {

      pthread_mutex_lock(&counter_mutex);

      while (counter == opt_use_threads)

      {

        struct timespec abstime;

        set_timespec(abstime, 3);

        pthread_cond_timedwait(&count_threshhold, &counter_mutex, &abstime);

      }

      /* Before exiting the lock we set ourselves up for the next thread */

      counter++;

      pthread_mutex_unlock(&counter_mutex);

      /* now create the thread */

      if (pthread_create(&mainthread, &attr, worker_thread, 

                         (void *)*argv) != 0)

      {

        pthread_mutex_lock(&counter_mutex);

        counter--;

        pthread_mutex_unlock(&counter_mutex);

        fprintf(stderr,"%s: Could not create thread\n",

                my_progname);

      }

    }

    /*

      We loop until we know that all children have cleaned up.

    */

    pthread_mutex_lock(&counter_mutex);

    while (counter)

    {

      struct timespec abstime;

      set_timespec(abstime, 3);

      pthread_cond_timedwait(&count_threshhold, &counter_mutex, &abstime);

    }

    pthread_mutex_unlock(&counter_mutex);

    VOID(pthread_mutex_destroy(&counter_mutex));

    VOID(pthread_cond_destroy(&count_threshhold));

    pthread_attr_destroy(&attr);

  }

  else

#endif

  {

    MYSQL *mysql= 0;

    if (!(mysql= db_connect(current_host,current_db,current_user,opt_password)))

    {

      free_defaults(argv_to_free);

      return(1); /* purecov: deadcode */

    }

    if (mysql_query(mysql, "/*!40101 set @@character_set_database=binary */;"))

    {

      db_error(mysql); /* We shall countinue here, if --force was given */

      return(1);

    }

    if (lock_tables)

      lock_table(mysql, argc, argv);

    for (; *argv != NULL; argv++)

      if ((error= write_to_table(*argv, mysql)))

        if (exitcode == 0)

          exitcode= error;

    db_disconnect(current_host, mysql);

  }

  my_free(opt_password,MYF(MY_ALLOW_ZERO_PTR));

#ifdef HAVE_SMEM

  my_free(shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));

#endif

  free_defaults(argv_to_free);

  my_end(my_end_arg);

  return(exitcode);

}