2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Bacula Catalog Database routines specific to MySQL
30 * These are MySQL specific routines -- hopefully all
31 * other files are generic.
33 * Kern Sibbald, March 2000
39 /* The following is necessary so that we do not include
40 * the dummy external definition of DB.
42 #define __SQL_C /* indicate that this is sql.c */
49 /* -----------------------------------------------------------------------
51 * MySQL dependent defines and subroutines
53 * -----------------------------------------------------------------------
56 /* List of open databases */
57 static BQUEUE db_list = {&db_list, &db_list};
59 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
62 * Retrieve database type
71 * Initialize database data structure. In principal this should
72 * never have errors, or it is really fatal.
75 db_init_database(JCR *jcr, const char *db_name, const char *db_user, const char *db_password,
76 const char *db_address, int db_port, const char *db_socket,
77 int mult_db_connections)
82 Jmsg(jcr, M_FATAL, 0, _("A user name for MySQL must be supplied.\n"));
85 P(mutex); /* lock DB queue */
86 /* Look to see if DB already open */
87 if (!mult_db_connections) {
88 for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
89 if (bstrcmp(mdb->db_name, db_name) &&
90 bstrcmp(mdb->db_address, db_address) &&
91 mdb->db_port == db_port) {
92 Dmsg2(100, "DB REopen %d %s\n", mdb->ref_count, db_name);
95 Dmsg3(100, "initdb ref=%d connected=%d db=%p\n", mdb->ref_count,
96 mdb->connected, mdb->db);
97 return mdb; /* already open */
101 Dmsg0(100, "db_open first time\n");
102 mdb = (B_DB *)malloc(sizeof(B_DB));
103 memset(mdb, 0, sizeof(B_DB));
104 mdb->db_name = bstrdup(db_name);
105 mdb->db_user = bstrdup(db_user);
107 mdb->db_password = bstrdup(db_password);
110 mdb->db_address = bstrdup(db_address);
113 mdb->db_socket = bstrdup(db_socket);
115 mdb->db_port = db_port;
116 mdb->have_insert_id = true;
117 mdb->errmsg = get_pool_memory(PM_EMSG); /* get error message buffer */
119 mdb->cmd = get_pool_memory(PM_EMSG); /* get command buffer */
120 mdb->cached_path = get_pool_memory(PM_FNAME);
121 mdb->cached_path_id = 0;
123 mdb->fname = get_pool_memory(PM_FNAME);
124 mdb->path = get_pool_memory(PM_FNAME);
125 mdb->esc_name = get_pool_memory(PM_FNAME);
126 mdb->esc_path = get_pool_memory(PM_FNAME);
127 mdb->allow_transactions = mult_db_connections;
128 qinsert(&db_list, &mdb->bq); /* put db in list */
129 Dmsg3(100, "initdb ref=%d connected=%d db=%p\n", mdb->ref_count,
130 mdb->connected, mdb->db);
136 * Now actually open the database. This can generate errors,
137 * which are returned in the errmsg
139 * DO NOT close the database or free(mdb) here !!!!
142 db_open_database(JCR *jcr, B_DB *mdb)
147 if (mdb->connected) {
152 if ((errstat=rwl_init(&mdb->lock)) != 0) {
154 Mmsg1(&mdb->errmsg, _("Unable to initialize DB lock. ERR=%s\n"),
155 be.bstrerror(errstat));
160 /* connect to the database */
161 #ifdef xHAVE_EMBEDDED_MYSQL
162 // mysql_server_init(0, NULL, NULL);
164 mysql_init(&mdb->mysql);
166 Dmsg0(50, "mysql_init done\n");
167 /* If connection fails, try at 5 sec intervals for 30 seconds. */
168 for (int retry=0; retry < 6; retry++) {
169 mdb->db = mysql_real_connect(
170 &(mdb->mysql), /* db */
171 mdb->db_address, /* default = localhost */
172 mdb->db_user, /* login name */
173 mdb->db_password, /* password */
174 mdb->db_name, /* database name */
175 mdb->db_port, /* default port */
176 mdb->db_socket, /* default = socket */
177 CLIENT_FOUND_ROWS); /* flags */
179 /* If no connect, try once more in case it is a timing problem */
180 if (mdb->db != NULL) {
186 mdb->mysql.reconnect = 1; /* so connection does not timeout */
187 Dmsg0(50, "mysql_real_connect done\n");
188 Dmsg3(50, "db_user=%s db_name=%s db_password=%s\n", mdb->db_user, mdb->db_name,
189 mdb->db_password==NULL?"(NULL)":mdb->db_password);
191 if (mdb->db == NULL) {
192 Mmsg2(&mdb->errmsg, _("Unable to connect to MySQL server.\n"
193 "Database=%s User=%s\n"
194 "MySQL connect failed either server not running or your authorization is incorrect.\n"),
195 mdb->db_name, mdb->db_user);
196 #if MYSQL_VERSION_ID >= 40101
197 Dmsg3(50, "Error %u (%s): %s\n",
198 mysql_errno(&(mdb->mysql)), mysql_sqlstate(&(mdb->mysql)),
199 mysql_error(&(mdb->mysql)));
201 Dmsg2(50, "Error %u: %s\n",
202 mysql_errno(&(mdb->mysql)), mysql_error(&(mdb->mysql)));
208 mdb->connected = true;
209 if (!check_tables_version(jcr, mdb)) {
214 Dmsg3(100, "opendb ref=%d connected=%d db=%p\n", mdb->ref_count,
215 mdb->connected, mdb->db);
217 /* Set connection timeout to 8 days specialy for batch mode */
218 sql_query(mdb, "SET wait_timeout=691200");
219 sql_query(mdb, "SET interactive_timeout=691200");
226 db_close_database(JCR *jcr, B_DB *mdb)
231 db_end_transaction(jcr, mdb);
233 sql_free_result(mdb);
235 Dmsg3(100, "closedb ref=%d connected=%d db=%p\n", mdb->ref_count,
236 mdb->connected, mdb->db);
237 if (mdb->ref_count == 0) {
239 if (mdb->connected) {
240 Dmsg1(100, "close db=%p\n", mdb->db);
241 mysql_close(&mdb->mysql);
243 #ifdef xHAVE_EMBEDDED_MYSQL
244 // mysql_server_end();
247 rwl_destroy(&mdb->lock);
248 free_pool_memory(mdb->errmsg);
249 free_pool_memory(mdb->cmd);
250 free_pool_memory(mdb->cached_path);
251 free_pool_memory(mdb->fname);
252 free_pool_memory(mdb->path);
253 free_pool_memory(mdb->esc_name);
254 free_pool_memory(mdb->esc_path);
261 if (mdb->db_password) {
262 free(mdb->db_password);
264 if (mdb->db_address) {
265 free(mdb->db_address);
267 if (mdb->db_socket) {
268 free(mdb->db_socket);
276 * This call is needed because the message channel thread
277 * opens a database on behalf of a jcr that was created in
278 * a different thread. MySQL then allocates thread specific
279 * data, which is NOT freed when the original jcr thread
280 * closes the database. Thus the msgchan must call here
281 * to cleanup any thread specific data that it created.
283 void db_thread_cleanup()
291 * Return the next unique index (auto-increment) for
292 * the given table. Return NULL on error.
294 * For MySQL, NULL causes the auto-increment value
297 int db_next_index(JCR *jcr, B_DB *mdb, char *table, char *index)
299 strcpy(index, "NULL");
305 * Escape strings so that MySQL is happy
307 * NOTE! len is the length of the old string. Your new
308 * string must be long enough (max 2*old+1) to hold
309 * the escaped output.
312 db_escape_string(JCR *jcr, B_DB *mdb, char *snew, char *old, int len)
314 mysql_real_escape_string(mdb->db, snew, old, len);
318 * Submit a general SQL command (cmd), and for each row returned,
319 * the sqlite_handler is called with the ctx.
321 bool db_sql_query(B_DB *mdb, const char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
327 if (sql_query(mdb, query) != 0) {
328 Mmsg(mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
332 if (result_handler != NULL) {
333 if ((mdb->result = sql_use_result(mdb)) != NULL) {
334 int num_fields = sql_num_fields(mdb);
336 /* We *must* fetch all rows */
337 while ((row = sql_fetch_row(mdb)) != NULL) {
339 /* the result handler returns 1 when it has
340 * seen all the data it wants. However, we
341 * loop to the end of the data.
343 if (result_handler(ctx, num_fields, row)) {
349 sql_free_result(mdb);
357 void my_mysql_free_result(B_DB *mdb)
361 mysql_free_result(mdb->result);
367 #ifdef HAVE_BATCH_FILE_INSERT
368 const char *my_mysql_batch_lock_path_query =
369 "LOCK TABLES Path write, batch write, Path as p write";
372 const char *my_mysql_batch_lock_filename_query =
373 "LOCK TABLES Filename write, batch write, Filename as f write";
375 const char *my_mysql_batch_unlock_tables_query = "UNLOCK TABLES";
377 const char *my_mysql_batch_fill_path_query =
378 "INSERT INTO Path (Path) "
379 "SELECT a.Path FROM "
380 "(SELECT DISTINCT Path FROM batch) AS a WHERE NOT EXISTS "
381 "(SELECT Path FROM Path AS p WHERE p.Path = a.Path)";
383 const char *my_mysql_batch_fill_filename_query =
384 "INSERT INTO Filename (Name) "
385 "SELECT a.Name FROM "
386 "(SELECT DISTINCT Name FROM batch) AS a WHERE NOT EXISTS "
387 "(SELECT Name FROM Filename AS f WHERE f.Name = a.Name)";
388 #endif /* HAVE_BATCH_FILE_INSERT */
390 #endif /* HAVE_MYSQL */