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
194
195
|
/*
** 2014 August 30
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file contains a command-line application that uses the RBU
** extension. See the usage() function below for an explanation.
*/
#include "sqlite3rbu.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
** Print a usage message and exit.
*/
void usage(const char *zArgv0){
fprintf(stderr,
"Usage: %s ?OPTIONS? TARGET-DB RBU-DB\n"
"\n"
"Where options are:\n"
"\n"
" -step NSTEP\n"
" -statstep NSTATSTEP\n"
" -vacuum\n"
" -presql SQL\n"
"\n"
" If the -vacuum switch is not present, argument RBU-DB must be an RBU\n"
" database containing an update suitable for target database TARGET-DB.\n"
" Or, if -vacuum is specified, then TARGET-DB is a database to vacuum using\n"
" RBU, and RBU-DB is used as the state database for the vacuum (refer to\n"
" API documentation for details).\n"
"\n"
" If NSTEP is set to less than or equal to zero (the default value), this \n"
" program attempts to perform the entire update or vacuum operation before\n"
" exiting\n"
"\n"
" If NSTEP is greater than zero, then a maximum of NSTEP calls are made\n"
" to sqlite3rbu_step(). If the RBU update has not been completely applied\n"
" after the NSTEP'th call is made, the state is saved in the database RBU-DB\n"
" and the program exits. Subsequent invocations of this (or any other RBU)\n"
" application will use this state to resume applying the RBU update to the\n"
" target db.\n"
"\n"
, zArgv0);
exit(1);
}
void report_default_vfs(){
sqlite3_vfs *pVfs = sqlite3_vfs_find(0);
fprintf(stdout, "default vfs is \"%s\"\n", pVfs ? pVfs->zName : "NULL");
}
void report_rbu_vfs(sqlite3rbu *pRbu){
sqlite3 *db = sqlite3rbu_db(pRbu, 0);
if( db ){
char *zName = 0;
sqlite3_file_control(db, "main", SQLITE_FCNTL_VFSNAME, &zName);
if( zName ){
fprintf(stdout, "using vfs \"%s\"\n", zName);
}else{
fprintf(stdout, "vfs name not available\n");
}
sqlite3_free(zName);
}
}
int main(int argc, char **argv){
int i;
const char *zTarget; /* Target database to apply RBU to */
const char *zRbu; /* Database containing RBU */
char zBuf[200]; /* Buffer for printf() */
char *zErrmsg = 0; /* Error message, if any */
sqlite3rbu *pRbu; /* RBU handle */
int nStep = 0; /* Maximum number of step() calls */
int nStatStep = 0; /* Report stats after this many step calls */
int bVacuum = 0;
const char *zPreSql = 0;
int rc = SQLITE_OK;
sqlite3_int64 nProgress = 0;
int nArgc = argc-2;
if( argc<3 ) usage(argv[0]);
for(i=1; i<nArgc; i++){
const char *zArg = argv[i];
int nArg = strlen(zArg);
if( nArg>1 && nArg<=8 && 0==memcmp(zArg, "-vacuum", nArg) ){
bVacuum = 1;
}else if( nArg>1 && nArg<=7
&& 0==memcmp(zArg, "-presql", nArg) && i<nArg-1 ){
i++;
zPreSql = argv[i];
}else if( nArg>1 && nArg<=5 && 0==memcmp(zArg, "-step", nArg) && i<nArg-1 ){
i++;
nStep = atoi(argv[i]);
}else if( nArg>1 && nArg<=9
&& 0==memcmp(zArg, "-statstep", nArg) && i<nArg-1
){
i++;
nStatStep = atoi(argv[i]);
}else{
usage(argv[0]);
}
}
zTarget = argv[argc-2];
zRbu = argv[argc-1];
report_default_vfs();
/* Open an RBU handle. A vacuum handle if -vacuum was specified, or a
** regular RBU update handle otherwise. */
if( bVacuum ){
pRbu = sqlite3rbu_vacuum(zTarget, zRbu);
}else{
pRbu = sqlite3rbu_open(zTarget, zRbu, 0);
}
report_rbu_vfs(pRbu);
if( zPreSql && pRbu ){
sqlite3 *dbMain = sqlite3rbu_db(pRbu, 0);
rc = sqlite3_exec(dbMain, zPreSql, 0, 0, 0);
if( rc==SQLITE_OK ){
sqlite3 *dbRbu = sqlite3rbu_db(pRbu, 1);
rc = sqlite3_exec(dbRbu, zPreSql, 0, 0, 0);
}
}
/* If nStep is less than or equal to zero, call
** sqlite3rbu_step() until either the RBU has been completely applied
** or an error occurs. Or, if nStep is greater than zero, call
** sqlite3rbu_step() a maximum of nStep times. */
if( rc==SQLITE_OK ){
for(i=0; (nStep<=0 || i<nStep) && sqlite3rbu_step(pRbu)==SQLITE_OK; i++){
if( nStatStep>0 && (i % nStatStep)==0 ){
sqlite3_int64 nUsed;
sqlite3_int64 nHighwater;
sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &nUsed, &nHighwater, 0);
fprintf(stdout, "memory used=%lld highwater=%lld", nUsed, nHighwater);
if( bVacuum==0 ){
int one;
int two;
sqlite3rbu_bp_progress(pRbu, &one, &two);
fprintf(stdout, " progress=%d/%d\n", one, two);
}else{
fprintf(stdout, "\n");
}
fflush(stdout);
}
}
nProgress = sqlite3rbu_progress(pRbu);
rc = sqlite3rbu_close(pRbu, &zErrmsg);
}
/* Let the user know what happened. */
switch( rc ){
case SQLITE_OK:
sqlite3_snprintf(sizeof(zBuf), zBuf,
"SQLITE_OK: rbu update incomplete (%lld operations so far)\n",
nProgress
);
fprintf(stdout, "%s", zBuf);
break;
case SQLITE_DONE:
sqlite3_snprintf(sizeof(zBuf), zBuf,
"SQLITE_DONE: rbu update completed (%lld operations)\n",
nProgress
);
fprintf(stdout, "%s", zBuf);
break;
default:
fprintf(stderr, "error=%d: %s\n", rc, zErrmsg);
break;
}
if( nStatStep>0 ){
sqlite3_int64 nUsed;
sqlite3_int64 nHighwater;
sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &nUsed, &nHighwater, 0);
fprintf(stdout, "memory used=%lld highwater=%lld\n", nUsed, nHighwater);
}
sqlite3_free(zErrmsg);
return (rc==SQLITE_OK || rc==SQLITE_DONE) ? 0 : 1;
}
|
