We have faced situation when using CDR and CEL by sqlite3 modules. With system having high load (~100 concurrent calls created by sipp) we found many cdr and cel records missed. There is special finction in sqlite3, that make able to fix this situation - sqlite3_wait_timeout, that also can replace awful code cdr_sqlite3 ad cel_sqlite3 modules. Also this function can be used for aastdb and res_config_sqlite3 to avoid missed writes to sqlite db.

#ASTERISK-23766 #close
Reported by: Igor Goncharovsky

Review: https://reviewboard.asterisk.org/r/3559/
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Merged revisions 416336 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 416337 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 416338 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@416339 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 3 insertions, 14 deletions

diff --git a/cel/cel_sqlite3_custom.c b/cel/cel_sqlite3_custom.c
index 8ff3bd702..110c8dc1c 100644
--- a/cel/cel_sqlite3_custom.c
+++ b/cel/cel_sqlite3_custom.c
@@ -234,7 +234,6 @@ static void write_cel(struct ast_event *event)
 {
 	char *error = NULL;
 	char *sql = NULL;
-	int count = 0;
 
 	if (db == NULL) {
 		/* Should not have loaded, but be failsafe. */
@@ -269,18 +268,7 @@ static void write_cel(struct ast_event *event)
 		ast_free(value_string);
 	}
 
-	/* XXX This seems awful arbitrary... */
-	for (count = 0; count < 5; count++) {
-		int res = sqlite3_exec(db, sql, NULL, NULL, &error);
-		if (res != SQLITE_BUSY && res != SQLITE_LOCKED) {
-			break;
-		}
-		usleep(200);
-	}
-
-	ast_mutex_unlock(&lock);
-
-	if (error) {
+	if (sqlite3_exec(db, sql, NULL, NULL, &error) != SQLITE_OK) {
 		ast_log(LOG_ERROR, "%s. SQL: %s.\n", error, sql);
 		sqlite3_free(error);
 	}
@@ -288,6 +276,7 @@ static void write_cel(struct ast_event *event)
 	if (sql) {
 		sqlite3_free(sql);
 	}
+	ast_mutex_unlock(&lock);
 
 	return;
 }
@@ -320,7 +309,7 @@ static int load_module(void)
 		free_config();
 		return AST_MODULE_LOAD_DECLINE;
 	}
-
+	sqlite3_busy_timeout(db, 1000);
 	/* is the table there? */
 	sql = sqlite3_mprintf("SELECT COUNT(*) FROM %q;", table);
 	res = sqlite3_exec(db, sql, NULL, NULL, NULL);