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mysql
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mysql-3.23.28g-win-source.exe
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mysqlbinlog
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mysqlbinlog.cpp
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2000-11-22
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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#define MYSQL_CLIENT
#undef MYSQL_SERVER
#include <global.h>
#include <m_string.h>
#include <my_sys.h>
#include <getopt.h>
#include <thr_alarm.h>
#include "log_event.h"
#define MYSQL_SERVER // We want the C++ version of net
#include <mysql.h>
#include "mini_client.h"
#define CLIENT_CAPABILITIES (CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG | CLIENT_LOCAL_FILES)
char server_version[50];
uint32 server_id = 0;
// needed by net_serv.c
ulong bytes_sent = 0L, bytes_received = 0L;
ulong mysqld_net_retry_count = 10L;
ulong net_read_timeout= NET_READ_TIMEOUT;
ulong net_write_timeout= NET_WRITE_TIMEOUT;
uint test_flags = 0;
#ifndef DBUG_OFF
static const char* default_dbug_option = "d:t:o,/tmp/mysqlbinlog.trace";
#endif
static struct option long_options[] =
{
{"short-form", no_argument, 0, 's'},
{"table", required_argument, 0, 't'},
{"offset", required_argument,0, 'o'},
{"help", no_argument, 0, '?'},
{"host", required_argument,0, 'h'},
{"port", required_argument,0, 'P'},
{"user", required_argument,0, 'u'},
{"password", required_argument,0, 'p'},
{"position", required_argument,0, 'j'},
#ifndef DBUG_OFF
{"debug", optional_argument, 0, '#'}
#endif
};
void sql_print_error(const char *format,...);
static bool short_form = 0;
static int offset = 0;
static const char* host = "localhost";
static int port = MYSQL_PORT;
static const char* user = "test";
static const char* pass = "";
static long position = 0;
static bool use_remote = 0;
static short binlog_flags = 0;
static MYSQL* mysql = NULL;
static const char* table = 0;
static void dump_local_log_entries(const char* logname);
static void dump_remote_log_entries(const char* logname);
static void dump_log_entries(const char* logname);
static void dump_remote_file(NET* net, const char* fname);
static void dump_remote_table(NET* net, const char* db, const char* table);
static void die(const char* fmt, ...);
static MYSQL* safe_connect();
void sql_print_error(const char *format,...)
{
va_list args;
va_start(args, format);
fprintf(stderr, "ERROR: ");
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
va_end(args);
}
static void die(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
fprintf(stderr, "ERROR: ");
vfprintf(stderr, fmt, args);
fprintf(stderr, "\n");
va_end(args);
exit(1);
}
static void usage()
{
printf("Usage: %s [options] log-files\n",my_progname);
printf("Options:\n\
-s,--short-form just show the queries, no extra info\n\
-o,--offset=N skip the first N entries\n\
-h,--host=server get the binlog from server\n\
-P,--port=port use port to connect to the remove server\n\
-u,--user=username connect to the remove server as username\n\
-p,--password=password use this password to connect to remote server\n\
-j,--position=N start reading the binlog at postion N\n\
-t,--table=name get raw table dump using COM_TABLE_DUMB \n\
-?,--help this message\n");
}
static void dump_remote_file(NET* net, const char* fname)
{
char buf[FN_REFLEN+1];
uint len = (uint) strlen(fname);
buf[0] = 0;
memcpy(buf + 1, fname, len + 1);
if(my_net_write(net, buf, len +2) || net_flush(net))
die("Failed requesting the remote dump of %s", fname);
for(;;)
{
uint packet_len = my_net_read(net);
if(packet_len == 0)
{
if(my_net_write(net, "", 0) || net_flush(net))
die("Failed sending the ack packet");
// we just need to send something, as the server will read but
// not examine the packet - this is because mysql_load() sends an OK when it is done
break;
}
else if(packet_len == packet_error)
die("Failed reading a packet during the dump of %s ", fname);
if(!short_form)
(void)my_fwrite(stdout, (byte*) net->read_pos, packet_len, MYF(0));
}
fflush(stdout);
}
static int parse_args(int *argc, char*** argv)
{
int c, opt_index = 0;
while((c = getopt_long(*argc, *argv, "so:#::h:j:u:p:P:t:?", long_options,
&opt_index)) != EOF)
{
switch(c)
{
#ifndef DBUG_OFF
case '#':
DBUG_PUSH(optarg ? optarg : default_dbug_option);
break;
#endif
case 's':
short_form = 1;
break;
case 'o':
offset = atoi(optarg);
break;
case 'j':
position = atoi(optarg);
break;
case 'h':
use_remote = 1;
host = my_strdup(optarg, MYF(0));
break;
case 'P':
use_remote = 1;
port = atoi(optarg);
break;
case 'p':
use_remote = 1;
pass = my_strdup(optarg, MYF(0));
break;
case 'u':
use_remote = 1;
user = my_strdup(optarg, MYF(0));
break;
case 't':
table = my_strdup(optarg, MYF(0));
break;
case '?':
default:
usage();
exit(0);
}
}
(*argc)-=optind;
(*argv)+=optind;
return 0;
}
static MYSQL* safe_connect()
{
MYSQL *local_mysql = mc_mysql_init(NULL);
if(!local_mysql)
die("Failed on mc_mysql_init");
if(!mc_mysql_connect(local_mysql, host, user, pass, 0, port, 0, 0))
die("failed on connect: %s", mc_mysql_error(local_mysql));
return local_mysql;
}
static void dump_log_entries(const char* logname)
{
if(use_remote)
dump_remote_log_entries(logname);
else
dump_local_log_entries(logname);
}
static void dump_remote_table(NET* net, const char* db, const char* table)
{
char buf[1024];
char * p = buf;
uint table_len = (uint) strlen(table);
uint db_len = (uint) strlen(db);
if(table_len + db_len > sizeof(buf) - 2)
die("Buffer overrun");
*p++ = db_len;
memcpy(p, db, db_len);
p += db_len;
*p++ = table_len;
memcpy(p, table, table_len);
if(mc_simple_command(mysql, COM_TABLE_DUMP, buf, p - buf + table_len, 1))
die("Error sending the table dump command");
for(;;)
{
uint packet_len = my_net_read(net);
if(packet_len == 0) break; // end of file
if(packet_len == packet_error)
die("Error reading packet in table dump");
my_fwrite(stdout, (byte*)net->read_pos, packet_len, MYF(MY_WME));
fflush(stdout);
}
}
static void dump_remote_log_entries(const char* logname)
{
char buf[128];
uint len;
NET* net = &mysql->net;
if(!position) position = 4; // protect the innocent from spam
if(position < 4)
{
position = 4;
// warn the guity
fprintf(stderr,
"Warning: with the position so small you would hit the magic number\n\
Unfortunately, no sweepstakes today, adjusted position to 4\n");
}
int4store(buf, position);
int2store(buf + 4, binlog_flags);
len = (uint) strlen(logname);
int4store(buf + 6, 0);
memcpy(buf + 10, logname,len);
if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 10, 1))
die("Error sending the log dump command");
for(;;)
{
len = mc_net_safe_read(mysql);
if (len == packet_error)
die("Error reading packet from server: %s", mc_mysql_error(mysql));
if(len == 1 && net->read_pos[0] == 254)
break; // end of data
DBUG_PRINT("info",( "len= %u, net->read_pos[5] = %d\n",
len, net->read_pos[5]));
Log_event * ev = Log_event::read_log_event(
(const char*) net->read_pos + 1 ,
len - 1);
if(ev)
{
ev->print(stdout, short_form);
if(ev->get_type_code() == LOAD_EVENT)
dump_remote_file(net, ((Load_log_event*)ev)->fname);
delete ev;
}
else
die("Could not construct log event object");
}
}
static void dump_local_log_entries(const char* logname)
{
File fd = -1;
IO_CACHE cache,*file= &cache;
int rec_count = 0;
if (logname && logname[0] != '-')
{
if ((fd = my_open(logname, O_RDONLY | O_BINARY, MYF(MY_WME))) < 0)
exit(1);
if (init_io_cache(file, fd, 0, READ_CACHE, (my_off_t) position, 0,
MYF(MY_WME | MY_NABP)))
exit(1);
}
else
{
if (init_io_cache(file, fileno(stdout), 0, READ_CACHE, (my_off_t) 0,
0, MYF(MY_WME | MY_NABP | MY_DONT_CHECK_FILESIZE)))
exit(1);
if (position)
{
/* skip 'position' characters from stdout */
byte buff[IO_SIZE];
my_off_t length,tmp;
for (length=position ; length > 0 ; length-=tmp)
{
tmp=min(length,sizeof(buff));
if (my_b_read(file,buff, (uint) tmp))
exit(1);
}
}
file->pos_in_file=position;
file->seek_not_done=0;
}
if (!position)
{
char magic[4];
if (my_b_read(file, (byte*) magic, sizeof(magic)))
die("I/O error reading binlog magic number");
if(memcmp(magic, BINLOG_MAGIC, 4))
die("Bad magic number");
}
while(1)
{
Log_event* ev = Log_event::read_log_event(file, 0);
if (!ev)
{
if (file->error)
die("Could not read entry at offset %ld : Error in log format or \
read error",
my_b_tell(file));
else
die("Could not construct event object");
break;
}
if (rec_count >= offset)
ev->print(stdout, short_form);
rec_count++;
delete ev;
}
if(fd >= 0)
my_close(fd, MYF(MY_WME));
end_io_cache(file);
}
int main(int argc, char** argv)
{
MY_INIT(argv[0]);
parse_args(&argc, (char***)&argv);
if(!argc && !table)
{
usage();
return -1;
}
if(use_remote)
{
init_thr_alarm(10); // need to do this manually
mysql = safe_connect();
}
if (table)
{
if(!use_remote)
die("You must specify connection parameter to get table dump");
char* db = (char*)table;
char* tbl = (char*) strchr(table, '.');
if(!tbl)
die("You must use database.table syntax to specify the table");
*tbl++ = 0;
dump_remote_table(&mysql->net, db, tbl);
}
else
{
while(--argc >= 0)
{
dump_log_entries(*(argv++));
}
}
if (use_remote)
mc_mysql_close(mysql);
return 0;
}
/*
We must include this here as it's compiled with different options for
the server
*/
#include "log_event.cc"