+/**
+ * logs and then displays error messages
+ *
+ * @return void
+ */
+function handleError($error)
+{
+ if ($error->getCode() == DB_DATAOBJECT_ERROR_NODATA) {
+ return;
+ }
+
+ $logmsg = "PEAR error: " . $error->getMessage();
+ if (common_config('site', 'logdebug')) {
+ $logmsg .= " : ". $error->getDebugInfo();
+ }
+ // DB queries often end up with a lot of newlines; merge to a single line
+ // for easier grepability...
+ $logmsg = str_replace("\n", " ", $logmsg);
+ common_log(LOG_ERR, $logmsg);
+
+ // @fixme backtrace output should be consistent with exception handling
+ if (common_config('site', 'logdebug')) {
+ $bt = $error->getBacktrace();
+ foreach ($bt as $n => $line) {
+ common_log(LOG_ERR, formatBacktraceLine($n, $line));
+ }
+ }
+ if ($error instanceof DB_DataObject_Error
+ || $error instanceof DB_Error
+ ) {
+ $msg = sprintf(
+ _(
+ 'The database for %s isn\'t responding correctly, '.
+ 'so the site won\'t work properly. '.
+ 'The site admins probably know about the problem, '.
+ 'but you can contact them at %s to make sure. '.
+ 'Otherwise, wait a few minutes and try again.'
+ ),
+ common_config('site', 'name'),
+ common_config('site', 'email')
+ );
+ } else {
+ $msg = _(
+ 'An important error occured, probably related to email setup. '.
+ 'Check logfiles for more info..'
+ );
+ }
+
+ $dac = new DBErrorAction($msg, 500);
+ $dac->showPage();
+ exit(-1);
+}
+
+/**
+ * Format a backtrace line for debug output roughly like debug_print_backtrace() does.
+ * Exceptions already have this built in, but PEAR error objects just give us the array.
+ *
+ * @param int $n line number
+ * @param array $line per-frame array item from debug_backtrace()
+ * @return string
+ */
+function formatBacktraceLine($n, $line)
+{
+ $out = "#$n ";
+ if (isset($line['class'])) $out .= $line['class'];
+ if (isset($line['type'])) $out .= $line['type'];
+ if (isset($line['function'])) $out .= $line['function'];
+ $out .= '(';
+ if (isset($line['args'])) {
+ $args = array();
+ foreach ($line['args'] as $arg) {
+ // debug_print_backtrace seems to use var_export
+ // but this gets *very* verbose!
+ $args[] = gettype($arg);
+ }
+ $out .= implode(',', $args);
+ }
+ $out .= ')';
+ $out .= ' called at [';
+ if (isset($line['file'])) $out .= $line['file'];
+ if (isset($line['line'])) $out .= ':' . $line['line'];
+ $out .= ']';
+ return $out;
+}
+
+function checkMirror($action_obj, $args)
+{
+ global $config;
+
+ static $alwaysRW = array('session', 'remember_me');
+
+ if (common_config('db', 'mirror') && $action_obj->isReadOnly($args)) {
+ if (is_array(common_config('db', 'mirror'))) {
+ // "load balancing", ha ha
+ $arr = common_config('db', 'mirror');
+ $k = array_rand($arr);
+ $mirror = $arr[$k];
+ } else {
+ $mirror = common_config('db', 'mirror');
+ }
+
+ // We ensure that these tables always are used
+ // on the master DB
+
+ $config['db']['database_rw'] = $config['db']['database'];
+ $config['db']['ini_rw'] = INSTALLDIR.'/classes/statusnet.ini';
+
+ foreach ($alwaysRW as $table) {
+ $config['db']['table_'.$table] = 'rw';
+ }