public static function getTree($sid, $URL, $method)
{
///if (!self::$enabled) return;
if (self::$activeTree) {
return;
}
if (self::$tree != null) {
return;
}
if (strtoupper($method) != 'GET' && !self::$makeTree) {
return;
}
$uTag = md5($URL);
self::$activeTree = true;
self::$changedTree = true;
self::setRoot();
$uriTag = self::generateETag($URL);
$list = self::loadData('tree_' . $uTag);
if ($list === null) {
self::$changedTree = false;
///Logger::Log('no tree', LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
return;
} else {
///Logger::Log('tree found', LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
}
$list = json_decode($list, true);
$result = self::loadData('data_' . $list[0]['eTag']);
if ($result === null) {
self::$changedTree = false;
///Logger::Log('no result', LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
return;
}
self::$tree = json_decode(json_encode($list));
$sources = array();
$allOK = true;
foreach ($list as $key => $elem) {
if ($elem['toSid'] === null) {
$sources[$key] = $elem;
}
}
// call sources
if ($allOK) {
foreach ($sources as $key => $source) {
$answ = Request::get($source['toURL'], array(), '', true);
if (!isset($answ['headers']['Etag']) || $answ['headers']['Etag'] != $source['eTag']) {
$allOK = false;
///Logger::Log('call '.$source['toURL'].(isset($answ['headers']['Etag']) ? ' is not equal, recvHash: '.$answ['headers']['Etag'] : '').' oldHash: '.$source['eTag'] , LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
} else {
///Logger::Log('call '.$source['toURL'].' is equal' , LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
}
}
}
if ($allOK) {
self::$changedTree = true;
if (isset($list[0])) {
self::cacheDataSimple($sid, $list[0]['toName'], $list[0]['toURL'], $result, 200, $list[0]['toMethod']);
///Logger::Log('cache hit', LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
} else {
///Logger::Log('nonono', LogLevel::DEBUG, false, dirname(__FILE__) . '/../calls.log');
}
} else {
// remove tree
self::removeData('tree_' . $uTag);
}
}
