/**
* 静态方法, 单例统一访问入口
* @return object 返回对象的唯一实例
*/
public static function getInstance()
{
if (is_null(self::$_instance) || !isset(self::$_instance)) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 迷你存储报俊
* @param string $path 用户文件的存储路径
* @param string $signature 文件sha1
* @param int $size 文件大小，单位字节
* @param int $nodeId 迷你存储节点值
*/
public function report($path, $signature, $size, $nodeId)
{
//防止重复文件通过网页上传，生成多条记录
$version = MiniVersion::getInstance()->getBySignature($signature);
if (empty($version)) {
//创建version/versionMeta数据
$pathParts = pathinfo($path);
$type = MiniUtil::getMimeType($pathParts["basename"]);
$version = MiniVersion::getInstance()->create($signature, $size, $type);
MiniVersionMeta::getInstance()->create($version["id"], "store_id", $nodeId);
//更新迷你存储节点状态，把新上传的文件数+1
PluginMiniStoreNode::getInstance()->newUploadFile($nodeId);
//清理垃圾数据
PluginMiniBreakFile::getInstance()->deleteBySignature($signature);
}
//执行文件秒传逻辑
$filesController = new MFileSecondsController();
$filesController->invoke();
}
/**
*根据文件的Hash值下载内容
* @param string $signature 文件hash值
* @throws 404错误
*/
public function downloadTxt($signature)
{
$version = MiniVersion::getInstance()->getBySignature($signature);
if (!empty($version)) {
//根据文件内容输出文件内容
$meta = MiniVersionMeta::getInstance()->getMeta($version["id"], "doc_id");
if (!empty($meta)) {
$url = PluginMiniDocNode::getInstance()->getDownloadUrl($meta["meta_value"], $version, "txt");
if (!empty($url)) {
header("HTTP/1.1 " . MConst::HTTP_CODE_301 . " Moved Permanently");
header("Location: " . $url);
exit;
}
} else {
//文本类文件直接下载
MiniFile::getInstance()->getContentBySignature($signature, $signature, $version["mime_type"]);
}
}
throw new MFileopsException(Yii::t('api', 'File Not Found'), 404);
}
/**
* 获得有效文件下载服务器节点
* 找到min(downloaded_file_count) and status=1的记录分配
* @param string $signature 文件内容hash
* @return array
*/
private function getDownloadNode($signature)
{
$version = MiniVersion::getInstance()->getBySignature($signature);
if (!empty($version)) {
$metaKey = "store_id";
$meta = MiniVersionMeta::getInstance()->getMeta($version["id"], $metaKey);
if (!empty($meta)) {
$value = $meta["meta_value"];
$ids = explode(",", $value);
$nodes = $this->getNodeList();
$validNodes = array();
foreach ($nodes as $node) {
//先找到当前文件存储的节点
$isValidNode = false;
foreach ($ids as $validNodeId) {
if ($validNodeId == $node["id"]) {
$isValidNode = true;
}
}
if (!$isValidNode) {
continue;
}
//然后判断节点是否有效，并在有效的节点找到下载次数最小的节点
if ($node["status"] == 1) {
array_push($validNodes, $node);
}
}
//选出downloaded_file_count最小的个节点
$validNodes = MiniUtil::arraySort($validNodes, "downloaded_file_count", SORT_ASC);
$nodes = MiniUtil::getFistArray($validNodes, 1);
if (count($nodes) > 0) {
$node = $nodes[0];
$urlInfo = parse_url($node["host"]);
if ($urlInfo["host"] == "127.0.0.1") {
//说明迷你存储在本机，直接把127.0.0.1替换为迷你存储端口
$defaultHost = MiniHttp::getMiniHost();
$miniHostInfo = parse_url($defaultHost);
$node['host'] = $miniHostInfo["scheme"] . "://" . $miniHostInfo["host"] . ":" . $urlInfo["port"] . $miniHostInfo["path"];
}
return $node;
}
return null;
}
}
return null;
}
/**
* 更改文档转换状态
* doc_convert_status:-1 表示转换失败
* doc_convert_status:0 表示尚未转换
* doc_convert_status:1 表示正在转换
* doc_convert_status:2 表示转换成功
* @param int $nodeId 文档转换节点ID
* @param string $signature 文件内容hash值
* @param int $status 文件转换状态值
* @return boolean
*/
public function updateDocConvertStatus($nodeId, $signature, $status)
{
$versionItem = FileVersion::model()->find("file_signature=:signature", array("signature" => $signature));
if (isset($versionItem)) {
$versionItem["doc_convert_status"] = $status;
$versionItem->save();
//文档转换成功，为meta添加记录，便于二次寻找迷你文档服务器
if ($status == 2) {
MiniVersionMeta::getInstance()->create($versionItem->id, "doc_id", $nodeId);
}
return true;
}
return false;
}
/**
* 删除记录
* @param $id
*/
public function deleteById($id)
{
$item = FileVersion::model()->findByPk($id);
if (isset($item)) {
MiniVersionMeta::getInstance()->deleteByVersionId($id);
$item->delete();
}
}
/**
* 获得迷你文档转换服务器节点
* @param string $signature
* @return string
*/
public function getConvertNode($signature)
{
//寻找以前迷你文档节点
$version = PluginMiniDocVersion::getInstance()->getBySignature($signature);
if (!empty($version)) {
$meta = MiniVersionMeta::getInstance()->getMeta($version["id"], "doc_id");
if (!empty($meta)) {
$nodeId = $meta["meta_value"];
$node = $this->getNodeById($nodeId);
if ($node["status"] == 1) {
return $node;
}
}
}
//返回随机converted_file_count最小的节点
$nodes = $this->getNodeList();
$validNodes = array();
foreach ($nodes as $itemNode) {
if ($itemNode["status"] == 1) {
array_push($validNodes, $itemNode);
}
}
//选出converted_file_count最小的个节点
$validNodes = MiniUtil::arraySort($validNodes, "converted_file_count", SORT_ASC);
$nodes = MiniUtil::getFistArray($validNodes, 1);
if (count($nodes) > 0) {
return $nodes[0];
}
return null;
}
/**
* 创建对象
*/
public function create()
{
// 查询文件信息
$path = MiniUtil::getAbsolutePath($this->user_id, $this->path);
$file = MiniFile::getInstance()->getByPath($path);
if (empty($file)) {
throw new MException(Yii::t('api', MConst::PATH_ERROR), MConst::HTTP_CODE_404);
}
$fileName = $file["file_name"];
$fileSize = $file["file_size"];
$versionId = $file["version_id"];
// 检查是否支持缩略图
$this->checkExistThumbnail($fileName, $fileSize);
// 获取文件版本
$version = MFileVersions::queryFileVersionByID($versionId);
if (count($version) == 0) {
throw new MException(Yii::t('api', MConst::PATH_ERROR), MConst::HTTP_CODE_404);
}
// 获取文件存储路径
$isTmp = false;
$signature = $_REQUEST["signature"];
if (empty($signature) || $signature === "undefined") {
$signature = $version[0]["file_signature"];
}
// 缩略图大小
$sizeInfo = self::$sizes[$this->size];
if ($sizeInfo === NULL) {
$sizeStr = strtolower($this->size);
$sizeList = explode("x", $sizeStr);
$sizeInfo = array("w" => $sizeList[0], "h" => $sizeList[1]);
}
$this->width = $sizeInfo["w"];
$this->height = $sizeInfo["h"];
// 检查缩略图是否存在
$thumbnail = THUMBNAIL_TEMP . MiniUtil::getPathBySplitStr($signature);
$thumbnail .= "_{$this->width}_{$this->height}.{$this->format}";
if (file_exists($thumbnail) == true) {
//直接跳转，避免重复生成缩略图
$url = MiniHttp::getMiniHost() . "assets/thumbnails/" . MiniUtil::getPathBySplitStr($signature);
$url .= "_{$this->width}_{$this->height}.{$this->format}";
header('Location: ' . $url);
exit;
}
//判断文件是否在迷你存储中，兼容非迷你存储的文件
$version = MiniVersion::getInstance()->getBySignature($signature);
$meta = MiniVersionMeta::getInstance()->getMeta($version["id"], "store_id");
$thumbnailData = array();
if (!empty($meta)) {
//为迷你存储缩略图添加hook
$thumbnailData["signature"] = $signature;
$storePath = apply_filters("image_path", $thumbnailData);
}
if (empty($storePath) || $storePath === $thumbnailData) {
//data源处理对象
$dataObj = Yii::app()->data;
$signaturePath = MiniUtil::getPathBySplitStr($signature);
if ($dataObj->isExistLocal()) {
$storePath = $dataObj->documentStorePath($signaturePath) . $signaturePath;
}
}
if (file_exists($storePath) == false) {
throw new MException(Yii::t('api', "The file path was not found."), MConst::HTTP_CODE_404);
}
$pathInfo = MUtils::pathinfo_utf($fileName);
$extension = $pathInfo["extension"];
$tmpPath = DOCUMENT_TEMP . $signature . ".{$extension}";
// 缩略图对象
$this->handler = NULL;
$this->image = $tmpPath;
$this->resize = true;
// 创建缩略图片父目录
if (file_exists(dirname($thumbnail)) == false) {
if (MUtils::MkDirsLocal(dirname($thumbnail)) == false) {
throw new MException(Yii::t('api', "The file path was not found."), MConst::HTTP_CODE_404);
}
}
// 临时文件父目录
if (file_exists(dirname($tmpPath)) == false) {
if (MUtils::MkDirsLocal(dirname($tmpPath)) == false) {
throw new MException(Yii::t('api', "The file path was not found."), MConst::HTTP_CODE_404);
}
}
// 拷贝文件到临时目录
if (file_exists($tmpPath) == false) {
if (copy($storePath, $tmpPath) == false) {
throw new MException(Yii::t('api', "The file path was not found."), MConst::HTTP_CODE_404);
}
}
// 如果图片格式与后缀不一致，转换为一致的
if ($this->format != strtolower($extension)) {
$fm = new Image($tmpPath);
$format_path = DOCUMENT_TEMP . $signature . ".{$this->format}";
$fm->save($format_path);
// 转换成功删除临时文件
unlink($tmpPath);
$this->image = $format_path;
}
if ($isTmp) {
unlink($storePath);
}
// 初始化图像对象
try {
$this->handler = new Image($this->image, isset($this->config) ? $this->config : NULL);
} catch (MException $e) {
Yii::log("Exception : {$e->getTraceAsString()}");
throw new MException(Yii::t('api', "The image is invalid and cannot be thumbnailed."), MConst::HTTP_CODE_415);
}
// 生成缩略图
if ($this->resize == true) {
$this->handler->resize($this->width, $this->height)->rotate(0)->quality(75)->sharpen(20);
$chmod = 0644;
$keep_actions = true;
try {
$this->handler->save($thumbnail, $chmod, $keep_actions);
$this->handler->setImageFile($thumbnail);
$this->image = $thumbnail;
@unlink($format_path);
} catch (MException $e) {
Yii::trace("Exception : {$e}", "miniyun.api");
throw new MException(Yii::t('api', "The image is invalid and cannot be thumbnailed."), MConst::HTTP_CODE_415);
}
}
}
