-/*
- * Bacula Catalog Database routines specific to SQLite
- *
- * Kern Sibbald, January 2002
- *
- * Version $Id$
- */
/*
Bacula® - The Network Backup Solution
- Copyright (C) 2000-2006 Free Software Foundation Europe e.V.
+ Copyright (C) 2000-2010 Free Software Foundation Europe e.V.
The main author of Bacula is Kern Sibbald, with contributions from
many others, a complete list can be found in the file AUTHORS.
This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
- License as published by the Free Software Foundation plus additions
- that are listed in the file LICENSE.
+ modify it under the terms of version three of the GNU Affero General Public
+ License as published by the Free Software Foundation and included
+ in the file 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
+ You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Bacula® is a registered trademark of John Walker.
+ Bacula® is a registered trademark of Kern Sibbald.
The licensor of Bacula is the Free Software Foundation Europe
(FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
Switzerland, email:ftf@fsfeurope.org.
*/
+/*
+ * Bacula Catalog Database routines specific to SQLite
+ *
+ * Kern Sibbald, January 2002
+ *
+ */
*/
/* List of open databases */
-static BQUEUE db_list = {&db_list, &db_list};
+static dlist *db_list = NULL;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-int QueryDB(const char *file, int line, JCR *jcr, B_DB *db, char *select_cmd);
-
-
/*
* Retrieve database type
*/
const char *
db_get_type(void)
{
+#ifdef HAVE_SQLITE3
+ return "SQLite3";
+#else
return "SQLite";
+#endif
+}
+
+/*
+ * When using mult_db_connections = 1,
+ * sqlite can be BUSY. We just need sleep a little in this case.
+ */
+
+#ifdef HAVE_SQLITE3
+static int my_busy_handler(void *arg, int calls)
+{
+ bmicrosleep(0, 500);
+ return 1;
+}
+#else
+static int my_busy_handler(void *arg, const char* p, int calls)
+{
+ bmicrosleep(0, 500);
+ return 1;
}
+#endif
+
/*
* Initialize database data structure. In principal this should
const char *db_address, int db_port, const char *db_socket,
int mult_db_connections)
{
- B_DB *mdb;
+ B_DB *mdb = NULL;
P(mutex); /* lock DB queue */
+ if (db_list == NULL) {
+ db_list = New(dlist(mdb, &mdb->link));
+ }
/* Look to see if DB already open */
if (!mult_db_connections) {
- for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
+ foreach_dlist(mdb, db_list) {
if (bstrcmp(mdb->db_name, db_name) &&
bstrcmp(mdb->db_address, db_address) &&
mdb->db_port == db_port) {
}
}
Dmsg0(300, "db_open first time\n");
- mdb = (B_DB *) malloc(sizeof(B_DB));
+ mdb = (B_DB *)malloc(sizeof(B_DB));
memset(mdb, 0, sizeof(B_DB));
mdb->db_name = bstrdup(db_name);
- mdb->have_insert_id = TRUE;
mdb->errmsg = get_pool_memory(PM_EMSG); /* get error message buffer */
*mdb->errmsg = 0;
mdb->cmd = get_pool_memory(PM_EMSG); /* get command buffer */
mdb->fname = get_pool_memory(PM_FNAME);
mdb->path = get_pool_memory(PM_FNAME);
mdb->esc_name = get_pool_memory(PM_FNAME);
+ mdb->esc_path = get_pool_memory(PM_FNAME);
+ mdb->esc_obj = get_pool_memory(PM_FNAME);
mdb->allow_transactions = mult_db_connections;
- qinsert(&db_list, &mdb->bq); /* put db in list */
+ db_list->append(mdb);
V(mutex);
return mdb;
}
int len;
struct stat statbuf;
int errstat;
+ int retry = 0;
P(mutex);
if (mdb->connected) {
mdb->connected = FALSE;
if ((errstat=rwl_init(&mdb->lock)) != 0) {
+ berrno be;
Mmsg1(&mdb->errmsg, _("Unable to initialize DB lock. ERR=%s\n"),
- strerror(errstat));
+ be.bstrerror(errstat));
V(mutex);
return 0;
}
return 0;
}
+ for (mdb->db=NULL; !mdb->db && retry++ < 10; ) {
#ifdef HAVE_SQLITE3
- int stat = sqlite3_open(db_name, &mdb->db);
- if (stat != SQLITE_OK) {
- mdb->sqlite_errmsg = (char *)sqlite3_errmsg(mdb->db);
- sqlite3_close(mdb->db);
- mdb->db = NULL;
- } else {
- mdb->sqlite_errmsg = NULL;
- }
-
+ int stat = sqlite3_open(db_name, &mdb->db);
+ if (stat != SQLITE_OK) {
+ mdb->sqlite_errmsg = (char *)sqlite3_errmsg(mdb->db);
+ sqlite3_close(mdb->db);
+ mdb->db = NULL;
+ } else {
+ mdb->sqlite_errmsg = NULL;
+ }
#else
- mdb->db = sqlite_open(
- db_name, /* database name */
- 644, /* mode */
- &mdb->sqlite_errmsg); /* error message */
+ mdb->db = sqlite_open(
+ db_name, /* database name */
+ 644, /* mode */
+ &mdb->sqlite_errmsg); /* error message */
#endif
- Dmsg0(300, "sqlite_open\n");
-
+ Dmsg0(300, "sqlite_open\n");
+ if (!mdb->db) {
+ bmicrosleep(1, 0);
+ }
+ }
if (mdb->db == NULL) {
Mmsg2(&mdb->errmsg, _("Unable to open Database=%s. ERR=%s\n"),
db_name, mdb->sqlite_errmsg ? mdb->sqlite_errmsg : _("unknown"));
free(db_name);
V(mutex);
return 0;
- }
+ }
+ mdb->connected = true;
free(db_name);
+
+ /* set busy handler to wait when we use mult_db_connections = 1 */
+#ifdef HAVE_SQLITE3
+ sqlite3_busy_handler(mdb->db, my_busy_handler, NULL);
+#else
+ sqlite_busy_handler(mdb->db, my_busy_handler, NULL);
+#endif
+
+#if defined(HAVE_SQLITE3) && defined(SQLITE3_INIT_QUERY)
+ db_sql_query(mdb, SQLITE3_INIT_QUERY, NULL, NULL);
+#endif
+
if (!check_tables_version(jcr, mdb)) {
V(mutex);
return 0;
}
- mdb->connected = true;
+
V(mutex);
return 1;
}
}
db_end_transaction(jcr, mdb);
P(mutex);
+ sql_free_result(mdb);
mdb->ref_count--;
if (mdb->ref_count == 0) {
- qdchain(&mdb->bq);
+ db_list->remove(mdb);
if (mdb->connected && mdb->db) {
sqlite_close(mdb->db);
}
free_pool_memory(mdb->fname);
free_pool_memory(mdb->path);
free_pool_memory(mdb->esc_name);
+ free_pool_memory(mdb->esc_path);
+ free_pool_memory(mdb->esc_obj);
if (mdb->db_name) {
free(mdb->db_name);
}
free(mdb);
+ if (db_list->size() == 0) {
+ delete db_list;
+ db_list = NULL;
+ }
}
V(mutex);
}
+void db_check_backend_thread_safe()
+{
+#ifdef HAVE_BATCH_FILE_INSERT
+# ifdef HAVE_SQLITE3_THREADSAFE
+ if (!sqlite3_threadsafe()) {
+ Emsg0(M_ABORT, 0, _("SQLite3 client library must be thread-safe "
+ "when using BatchMode.\n"));
+ }
+# endif
+#endif
+}
+
+void db_thread_cleanup()
+{
+#ifdef HAVE_SQLITE3
+ sqlite3_thread_cleanup();
+#endif
+}
+
/*
* Return the next unique index (auto-increment) for
* the given table. Return 0 on error.
*/
int db_next_index(JCR *jcr, B_DB *mdb, char *table, char *index)
{
-#ifdef xxxx
- SQL_ROW row;
+ strcpy(index, "NULL");
+ return 1;
+}
- db_lock(mdb);
+/*
+ * Escape binary object so that SQLite is happy
+ * Memory is stored in B_DB struct, no need to free it
+ *
+ * TODO: this should be implemented (escape \0)
+ */
+char *
+db_escape_object(JCR *jcr, B_DB *mdb, char *old, int len)
+{
+ char *n, *o;
- Mmsg(mdb->cmd,
-"SELECT id FROM NextId WHERE TableName=\"%s\"", table);
- if (!QUERY_DB(jcr, mdb, mdb->cmd)) {
- Mmsg(mdb->errmsg, _("next_index query error: ERR=%s\n"), sql_strerror(mdb));
- db_unlock(mdb);
- return 0;
- }
- if ((row = sql_fetch_row(mdb)) == NULL) {
- Mmsg(mdb->errmsg, _("Error fetching index: ERR=%s\n"), sql_strerror(mdb));
- db_unlock(mdb);
- return 0;
+ n = mdb->esc_obj = check_pool_memory_size(mdb->esc_obj, len*2+1);
+ o = old;
+ while (len--) {
+ switch (*o) {
+ case '\'':
+ *n++ = '\'';
+ *n++ = '\'';
+ o++;
+ break;
+ case 0:
+ *n++ = '\\';
+ *n++ = 0;
+ o++;
+ break;
+ default:
+ *n++ = *o++;
+ break;
+ }
}
- bstrncpy(index, row[0], 28);
- sql_free_result(mdb);
+ *n = 0;
+ return mdb->esc_obj;
+}
- Mmsg(mdb->cmd,
-"UPDATE NextId SET id=id+1 WHERE TableName=\"%s\"", table);
- if (!QUERY_DB(jcr, mdb, mdb->cmd)) {
- Mmsg(mdb->errmsg, _("next_index update error: ERR=%s\n"), sql_strerror(mdb));
- db_unlock(mdb);
- return 0;
+/*
+ * Unescape binary object so that SQLIte is happy
+ *
+ * TODO: need to be implemented (escape \0)
+ */
+void
+db_unescape_object(JCR *jcr, B_DB *mdb,
+ char *from, int32_t expected_len,
+ POOLMEM **dest, int32_t *dest_len)
+{
+ if (!from) {
+ *dest[0] = 0;
+ *dest_len = 0;
+ return;
}
- sql_free_result(mdb);
-
- db_unlock(mdb);
-#endif
- strcpy(index, "NULL");
- return 1;
+ *dest = check_pool_memory_size(*dest, expected_len+1);
+ *dest_len = expected_len;
+ memcpy(*dest, from, expected_len);
+ (*dest)[expected_len]=0;
}
-
/*
* Escape strings so that SQLite is happy
*
* the escaped output.
*/
void
-db_escape_string(char *snew, char *old, int len)
+db_escape_string(JCR *jcr, B_DB *mdb, char *snew, char *old, int len)
{
char *n, *o;
* Submit a general SQL command (cmd), and for each row returned,
* the sqlite_handler is called with the ctx.
*/
-int db_sql_query(B_DB *mdb, const char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
+bool db_sql_query(B_DB *mdb, const char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
{
struct rh_data rh_data;
int stat;
rh_data.result_handler = result_handler;
rh_data.ctx = ctx;
stat = sqlite_exec(mdb->db, query, sqlite_result, (void *)&rh_data, &mdb->sqlite_errmsg);
- if (stat != 0) {
+ if (stat != SQLITE_OK) {
Mmsg(mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
db_unlock(mdb);
- return 0;
+ return false;
}
db_unlock(mdb);
- return 1;
+ return true;
}
/*
{
int stat;
+ my_sqlite_free_table(mdb);
if (mdb->sqlite_errmsg) {
#ifdef HAVE_SQLITE3
sqlite3_free(mdb->sqlite_errmsg);
}
stat = sqlite_get_table(mdb->db, (char *)cmd, &mdb->result, &mdb->nrow, &mdb->ncolumn,
&mdb->sqlite_errmsg);
- mdb->row = 0; /* row fetched */
+ mdb->row = 0; /* no row fetched yet */
+ if (stat != 0) { /* something went wrong */
+ mdb->nrow = mdb->ncolumn = 0;
+ }
return stat;
}
/* Fetch one row at a time */
SQL_ROW my_sqlite_fetch_row(B_DB *mdb)
{
- if (mdb->row >= mdb->nrow) {
+ if (!mdb->result || (mdb->row >= mdb->nrow)) {
return NULL;
}
mdb->row++;
if (mdb->fields_defined) {
for (i=0; i < sql_num_fields(mdb); i++) {
- free(mdb->fields[i]);
+ if (mdb->fields[i]) {
+ free(mdb->fields[i]);
+ mdb->fields[i] = NULL;
+ }
+ }
+ if (mdb->fields) {
+ free(mdb->fields);
+ mdb->fields = NULL;
}
- free(mdb->fields);
mdb->fields_defined = false;
}
- sqlite_free_table(mdb->result);
+ if (mdb->result) {
+ sqlite_free_table(mdb->result);
+ mdb->result = NULL;
+ }
mdb->nrow = mdb->ncolumn = 0;
}
{
int i, j;
if (mdb->result == NULL) {
+ mdb->field = 0;
return;
}
/* On first call, set up the fields */
mdb->fields = (SQL_FIELD **)malloc(sizeof(SQL_FIELD) * mdb->ncolumn);
for (i=0; i < sql_num_fields(mdb); i++) {
mdb->fields[i] = (SQL_FIELD *)malloc(sizeof(SQL_FIELD));
+ /* ***FIXME*** it seems to me that this is wrong
+ * fields has lots of items
+ */
+ if (mdb->result[i] == NULL) {
+ mdb->fields_defined = false;
+ free(mdb->fields);
+ mdb->fields = NULL;
+ mdb->field = 0;
+ return;
+ }
mdb->fields[i]->name = mdb->result[i];
mdb->fields[i]->length = cstrlen(mdb->fields[i]->name);
mdb->fields[i]->max_length = mdb->fields[i]->length;
mdb->fields[i]->type = 0;
mdb->fields[i]->flags = 1; /* not null */
}
- mdb->fields_defined = TRUE;
+ mdb->fields_defined = true;
}
- if (field > sql_num_fields(mdb)) {
- field = sql_num_fields(mdb);
+ if (sql_num_fields(mdb) <= 0) {
+ field = 0;
+ } else if (field > sql_num_fields(mdb) - 1) {
+ field = sql_num_fields(mdb) - 1;
}
mdb->field = field;
-
}
SQL_FIELD *my_sqlite_fetch_field(B_DB *mdb)
{
- return mdb->fields[mdb->field++];
+ if (mdb->fields_defined && mdb->field < sql_num_fields(mdb)) {
+ return mdb->fields[mdb->field++];
+ } else {
+ mdb->field = 0;
+ return NULL;
+ }
}
+uint64_t my_sqlite_insert_autokey_record(B_DB *mdb, const char *query, const char *table_name)
+{
+ /*
+ * First execute the insert query and then retrieve the currval.
+ */
+ if (my_sqlite_query(mdb, query)) {
+ return 0;
+ }
+
+ mdb->num_rows = sql_affected_rows(mdb);
+ if (mdb->num_rows != 1) {
+ return 0;
+ }
+
+ mdb->changes++;
+
+#ifdef HAVE_SQLITE3
+ return sqlite3_last_insert_rowid(mdb->db);
+#else
+ return sqlite_last_insert_rowid(mdb->db);
+#endif
+}
+
+#ifdef HAVE_BATCH_FILE_INSERT
+const char *my_sqlite_batch_lock_query = "BEGIN";
+const char *my_sqlite_batch_unlock_query = "COMMIT";
+
+const char *my_sqlite_batch_fill_path_query =
+ "INSERT INTO Path (Path)"
+ " SELECT DISTINCT Path FROM batch"
+ " EXCEPT SELECT Path FROM Path";
+
+const char *my_sqlite_batch_fill_filename_query =
+ "INSERT INTO Filename (Name)"
+ " SELECT DISTINCT Name FROM batch "
+ " EXCEPT SELECT Name FROM Filename";
+#endif /* HAVE_BATCH_FILE_INSERT */
+
+
#endif /* HAVE_SQLITE */
projects / bacula / bacula / blobdiff