1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/* Copyright (C) 2007 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 */
#include "maria_def.h"
#include "ma_recovery.h"
#include <my_getopt.h>
#define PCACHE_SIZE (1024*1024*10)
#define LOG_FLAGS 0
#define LOG_FILE_SIZE (1024L*1024L)
static const char *load_default_groups[]= { "maria_read_log",0 };
static void get_options(int *argc,char * * *argv);
#ifndef DBUG_OFF
#if defined(__WIN__)
const char *default_dbug_option= "d:t:i:O,\\maria_read_log.trace";
#else
const char *default_dbug_option= "d:t:i:o,/tmp/maria_read_log.trace";
#endif
#endif /* DBUG_OFF */
static my_bool opt_only_display, opt_display_and_apply;
int main(int argc, char **argv)
{
LSN lsn;
char **default_argv;
MY_INIT(argv[0]);
load_defaults("my", load_default_groups, &argc, &argv);
default_argv= argv;
get_options(&argc, &argv);
maria_data_root= ".";
maria_in_recovery= TRUE;
if (maria_init())
{
fprintf(stderr, "Can't init Maria engine (%d)\n", errno);
goto err;
}
/* we don't want to create a control file, it MUST exist */
if (ma_control_file_create_or_open())
{
fprintf(stderr, "Can't open control file (%d)\n", errno);
goto err;
}
if (last_logno == FILENO_IMPOSSIBLE)
{
fprintf(stderr, "Can't find any log\n");
goto err;
}
/* same page cache for log and data; assumes same page size... */
DBUG_ASSERT(maria_block_size == TRANSLOG_PAGE_SIZE);
if (init_pagecache(maria_pagecache, PCACHE_SIZE, 0, 0,
TRANSLOG_PAGE_SIZE) == 0)
{
fprintf(stderr, "Got error in init_pagecache() (errno: %d)\n", errno);
goto err;
}
/*
If log handler does not find the "last_logno" log it will return error,
which is good.
But if it finds a log and this log was crashed, it will create a new log,
which is useless. TODO: start log handler in read-only mode.
*/
if (translog_init(".", LOG_FILE_SIZE, 50112, 0, maria_pagecache,
TRANSLOG_DEFAULT_FLAGS))
{
fprintf(stderr, "Can't init loghandler (%d)\n", errno);
goto err;
}
if (opt_only_display)
printf("You are using --only-display, NOTHING will be written to disk\n");
/* LSN could be also --start-from-lsn=# */
lsn= translog_first_theoretical_lsn();
/*
@todo process LSN_IMPOSSIBLE and LSN_ERROR values of
translog_first_theoretical_lsn()
*/
fprintf(stdout, "TRACE of the last maria_read_log\n");
/* Until we have UNDO records, no UNDO phase */
if (maria_apply_log(lsn, opt_display_and_apply, stdout, FALSE))
goto err;
fprintf(stdout, "%s: SUCCESS\n", my_progname);
goto end;
err:
/* don't touch anything more, in case we hit a bug */
fprintf(stderr, "%s: FAILED\n", my_progname);
exit(1);
end:
maria_end();
free_defaults(default_argv);
my_end(0);
exit(0);
return 0; /* No compiler warning */
}
static struct my_option my_long_options[] =
{
{"help", '?', "Display this help and exit.",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{"only-display", 'o', "display brief info about records's header",
(uchar **) &opt_only_display, (uchar **) &opt_only_display, 0, GET_BOOL,
NO_ARG,0, 0, 0, 0, 0, 0},
{"display-and-apply", 'a',
"like --only-display but displays more info and modifies tables",
(uchar **) &opt_display_and_apply, (uchar **) &opt_display_and_apply, 0,
GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifndef DBUG_OFF
{"debug", '#', "Output debug log. Often this is 'd:t:o,filename'.",
0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#endif
{ 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
#include <help_start.h>
static void print_version(void)
{
VOID(printf("%s Ver 1.0 for %s on %s\n",
my_progname, SYSTEM_TYPE, MACHINE_TYPE));
NETWARE_SET_SCREEN_MODE(1);
}
static void usage(void)
{
print_version();
puts("Copyright (C) 2007 MySQL AB");
puts("This software comes with ABSOLUTELY NO WARRANTY. This is free software,");
puts("and you are welcome to modify and redistribute it under the GPL license\n");
puts("Display and apply log records from a MARIA transaction log");
puts("found in the current directory (for now)");
VOID(printf("\nUsage: %s OPTIONS\n", my_progname));
puts("You need to use one of -o or -a");
my_print_help(my_long_options);
print_defaults("my", load_default_groups);
my_print_variables(my_long_options);
}
#include <help_end.h>
static my_bool
get_one_option(int optid __attribute__((unused)),
const struct my_option *opt __attribute__((unused)),
char *argument __attribute__((unused)))
{
switch (optid) {
case '?':
usage();
exit(0);
#ifndef DBUG_OFF
case '#':
DBUG_SET_INITIAL(argument ? argument : default_dbug_option);
break;
}
#endif
return 0;
}
static void get_options(int *argc,char ***argv)
{
int ho_error;
my_progname= argv[0][0];
if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
exit(ho_error);
if ((opt_only_display + opt_display_and_apply) != 1)
{
usage();
exit(1);
}
}
|
