/**
* 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;
}
/**
* 场景1：针对处理错误的文件，重新提交转换请求，这种场景针对的是文件转换中，CPU超时导致的文件转换失败
* 本次操作将一次性把系统中所有的转换失败的文件转换一次
* 使用方式：手动执行
*/
public function actionConvertFailFile()
{
$versions = PluginMiniDocVersion::getInstance()->getDocConvertList(-1);
echo "第二次转换文件有:" . count($versions) . "个\n";
foreach ($versions as $version) {
echo $version["file_signature"] . "\n";
}
PluginMiniDocVersion::getInstance()->pushConvert($versions);
}
/**
*根据文件的Hash值下载内容
*@param string $signature 文件hash值
*@return array
*
*/
function pullText($signature)
{
$version = PluginMiniDocVersion::getInstance()->getBySignature($signature);
if (isset($version)) {
$mimeTypeList = array("text/plain", "text/html", "application/javascript", "text/css", "application/xml");
foreach ($mimeTypeList as $mimeType) {
if ($mimeType === $version["mime_type"]) {
PluginMiniSearchFile::getInstance()->create($signature);
return;
}
}
$mimeTypeList = array("application/mspowerpoint", "application/msword", "application/msexcel", "application/pdf");
foreach ($mimeTypeList as $mimeType) {
if ($mimeType === $version["mime_type"]) {
//文档类增量转换
//doc/ppt/xls/pdf全文检索需要通过迷你文档拉取文本内容
PluginMiniSearchFile::getInstance()->create($signature);
}
}
}
}
/**
*
* 文件上传成功后，向迷你文档服务器发送文档转换请求
* @param $data 文件sha1编码
* @return bool
*/
function fileUploadAfter($data)
{
$signature = $data["signature"];
$fileName = $data["file_name"];
$newMimeType = MiniUtil::getMimeType($fileName);
$mimeTypeList = array("text/plain", "text/html", "application/javascript", "text/css", "application/xml");
foreach ($mimeTypeList as $mimeType) {
if ($mimeType === $newMimeType) {
//文本类文件直接把内容存储到数据库中，便于全文检索
do_action("pull_text_search", $signature);
return;
}
}
$mimeTypeList = array("application/mspowerpoint", "application/msword", "application/msexcel", "application/pdf");
foreach ($mimeTypeList as $mimeType) {
if ($mimeType === $newMimeType) {
//文档类增量转换
PluginMiniDocVersion::getInstance()->pushConvertSignature($signature, $newMimeType);
break;
}
}
return true;
}
/**
* 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;
}
/**
* 获得当前文档转换状态
* 如状态为0，可能是老文件，以补偿形式开始转换
* @param string $path 文件路径
*/
public function convertStatus($path)
{
$file = MiniFile::getInstance()->getByPath($path);
$version = PluginMiniDocVersion::getInstance()->getVersion($file['version_id']);
if ($version["doc_convert_status"] == 0) {
PluginMiniDocVersion::getInstance()->pushConvertSignature($version["file_signature"], "");
}
return array('status' => $version['doc_convert_status']);
}
