public $error = false;
function __construct($server, $user, $pass, $db, $install = false) {
- global $a;
+ $a = get_app();
$stamp1 = microtime(true);
return $return;
}
+ /**
+ * @brief Returns the selected database name
+ *
+ * @return string
+ */
+ public function database_name() {
+ $r = $this->q("SELECT DATABASE() AS `db`");
+
+ return $r[0]['db'];
+ }
+
/**
* @brief Returns the number of rows
*
return $return;
}
+ /**
+ * @brief Analyze a database query and log this if some conditions are met.
+ *
+ * @param string $query The database query that will be analyzed
+ */
+ public function log_index($query) {
+ $a = get_app();
+
+ if ($a->config["system"]["db_log_index"] == "") {
+ return;
+ }
+
+ // Don't explain an explain statement
+ if (strtolower(substr($query, 0, 7)) == "explain") {
+ return;
+ }
+
+ // Only do the explain on "select", "update" and "delete"
+ if (!in_array(strtolower(substr($query, 0, 6)), array("select", "update", "delete"))) {
+ return;
+ }
+
+ $r = $this->q("EXPLAIN ".$query);
+ if (!dbm::is_result($r)) {
+ return;
+ }
+
+ $watchlist = explode(',', $a->config["system"]["db_log_index_watch"]);
+ $blacklist = explode(',', $a->config["system"]["db_log_index_blacklist"]);
+
+ foreach ($r AS $row) {
+ if ((intval($a->config["system"]["db_loglimit_index"]) > 0)) {
+ $log = (in_array($row['key'], $watchlist) AND
+ ($row['rows'] >= intval($a->config["system"]["db_loglimit_index"])));
+ } else
+ $log = false;
+
+ if ((intval($a->config["system"]["db_loglimit_index_high"]) > 0) AND ($row['rows'] >= intval($a->config["system"]["db_loglimit_index_high"]))) {
+ $log = true;
+ }
+
+ if (in_array($row['key'], $blacklist) OR ($row['key'] == "")) {
+ $log = false;
+ }
+
+ if ($log) {
+ $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+ @file_put_contents($a->config["system"]["db_log_index"], datetime_convert()."\t".
+ $row['key']."\t".$row['rows']."\t".$row['Extra']."\t".
+ basename($backtrace[1]["file"])."\t".
+ $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
+ substr($query, 0, 2000)."\n", FILE_APPEND);
+ }
+ }
+ }
+
public function q($sql, $onlyquery = false) {
- global $a;
+ $a = get_app();
if (!$this->db || !$this->connected) {
return false;
//logger("dba: q: $stmt", LOGGER_ALL);
if ($stmt === false)
logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
+
+ $db->log_index($stmt);
+
return $db->q($stmt);
}
$stmt = @vsprintf($sql,$args); // Disabled warnings
if ($stmt === false)
logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
- $db->q("SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;");
+
+ $db->log_index($stmt);
+
+ $db->q("SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;");
$retval = $db->q($stmt);
- $db->q("COMMIT;");
+ $db->q("SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;");
return $retval;
}