/**
* Syncronize with remote server if $opt[remote_server] (self::$sync[server]) is set.
* Local path is $opt[cwd]|getcwd().'/'.$this->path.
* Remote path is $opt[remote_server]|self::$sync[server].'/'.$opt[remote_path]|self::$sync[cwd].'/'.$opt[remote_file]|$this->path
* Auto create local file directory if necessary. Retrieve remote md5 with remote_server.'/'.self::$sync[bin]?path=remote_file.
* If $this->json_format is set save file information to local_file.json. Use md5_old to avoid unnecessary downloads.
*
* @param map $opt see constructor
*
*/
public function synchronize($opt)
{
if (is_null($this->path) || mb_strlen($this->path) == 0) {
throw new Exception('empty path');
}
if (empty(self::$sync['server']) && empty($opt['remote_server'])) {
return;
}
try {
$cwd = empty($opt['cwd']) ? getcwd() : $opt['cwd'];
$rserver = empty($opt['remote_server']) ? self::$sync['server'] : $opt['remote_server'];
$rfile = empty($opt['remote_file']) ? $this->path : $opt['remote_file'];
$rpath = '';
if (isset($opt['remote_path'])) {
$rpath = $opt['remote_path'];
} else {
if (!empty(self::$sync['cwd'])) {
$rpath = self::$sync['cwd'];
}
}
$this->remote_path = empty($rpath) ? $rfile : $rpath . '/' . $rfile;
$dir = $cwd . '/' . dirname($this->path);
if (!Dir::exists($dir)) {
Dir::create($dir, 0, true);
}
$this->path_absolute = empty(realpath($dir)) ? $dir . '/' . $this->path : realpath($dir) . '/' . basename($this->path);
$file_exists = File::exists($this->path_absolute);
if (empty(self::$sync['bin']) && ($file_exists || !empty($this->json_format))) {
throw new Exception('missing sync.bin', print_r(self::$sync, true));
} else {
$server_bin = $rserver . '/' . self::$sync['bin'];
}
if (!empty($this->json_format)) {
$json_file = $this->path_absolute . '.json';
if (File::exists($json_file)) {
$this->scanJSON();
}
$json_query = $server_bin . '?format=' . $this->json_format . '&path=' . urlencode($this->remote_path);
try {
$remote_json_str = File::fromURL($json_query);
$remote_json = JSON::decode($remote_json_str);
} catch (Exception $e) {
throw new Exception('failed to retrive file information', "query={$json_query} result={$remote_json_str}");
}
if ($this->md5 != $remote_json['md5']) {
File::save($json_file, $remote_json_str);
$this->scanJSON($remote_json);
$this->is_modified = 1;
} else {
$this->is_modified = 0;
}
} else {
if (!$file_exists) {
File::save($this->path_absolute, File::fromURL($rserver . '/' . $this->remote_path));
$this->is_modified = 1;
$this->scanFile();
} else {
$this->scanFile();
$remote_json = JSON::decode(File::fromURL($server_bin . '?path=' . urlencode($this->remote_path)));
if (empty($remote_json['md5'])) {
throw new Exception('remote md5 missing', print_r($remote_json, true));
}
if ($remote_json['md5'] != $this->md5) {
File::save($this->path_absolute, File::fromURL($rserver . '/' . $this->remote_path));
$this->is_modified = 1;
$this->scanFile();
} else {
$this->is_modified = 0;
}
}
}
$this->is_synchronized = 1;
} catch (Exception $e) {
if (!empty(self::$sync['abort'])) {
throw $e;
} else {
$this->is_synchronized = 0;
}
}
}
