<?php
require 'DahuaUtil.php';
class InotifyMonitor {
             
             const MONITOR_EVENT  = IN_CLOSE_WRITE;
             const EVENT_MASK  = [
                 IN_ACCESS => 'File was accessed (read)',
                 IN_MODIFY => 'File was modified',
                 IN_ATTRIB => 'Metadata changed',
                 IN_CLOSE_WRITE => 'File opened for writing was closed',
                 IN_CLOSE_NOWRITE => 'File not opened for writing was closed',
                 IN_OPEN => 'File was opened',
                 IN_MOVED_TO => 'File moved into watched directory',
                 IN_MOVED_FROM => 'File moved out of watched directory',
                 IN_CREATE => 'File or directory created in watched directory',
                 IN_DELETE => 'File or directory deleted in watched directory',
                 IN_DELETE_SELF => 'Watched file or directory was deleted',
                 IN_MOVE_SELF => 'Watch file or directory was moved',
                 IN_CLOSE => 'Equals to IN_CLOSE_WRITE | IN_CLOSE_NOWRITE',
                 IN_MOVE => 'Equals to IN_MOVED_FROM | IN_MOVED_TO',
                 IN_ALL_EVENTS => 'Bitmask of all the above constants',
                 IN_UNMOUNT => 'File system containing watched object was unmounted',
                 IN_Q_OVERFLOW => 'Event queue overflowed (wd is -1 for this event)',
                 IN_IGNORED => 'Watch was removed (explicitly by inotify_rm_watch() or because file was removed or filesystem unmounted',
                 IN_ISDIR => 'Subject of this event is a directory',
                 IN_ONLYDIR => 'Only watch pathname if it is a directory',
                 IN_DONT_FOLLOW => 'Do not dereference pathname if it is a symlink',
                 IN_MASK_ADD => 'Add events to watch mask for this pathname if it already exists',
                 IN_ONESHOT => 'Monitor pathname for one event, then remove from watch list.',
                 1073741840 => 'High-bit: File not opened for writing was closed',
                 1073741856 => 'High-bit: File was opened',
                 1073742080 => 'High-bit: File or directory created in watched directory',
                 1073742336 => 'High-bit: File or directory deleted in watched directory',
             ];
          
             public $fds  = [];
              
             public $paths  = [];
              
             public $wds = [];
              
             public $timeout  = 3;
             
             public $redis=null;
             
             public $db=1;
             public $key='redis_to_kafka';
           
             public  function __construct( $paths,$ip='127.0.0.1',$password='',$post=6379,$db='1',$key='redis_to_kafka'){
                 if (!empty($paths)) {
                     foreach ($paths as $path) {
                         if (file_exists($path)) {
                             if (is_dir($path)) {
                                 $this->addDir($path);
                             } else {
                                 $this->addFile($path);
                             }
                         }
                     }
                 }
                
                $this->redis = new Redis();
                $this->db=$db;
                $this->key=$key;

                try{
                    $this->redis->pconnect($ip,$post,2.5);
                    $this->redis->auth($password); //设置密码
                    $this->redis->select($this->db);
                    $result = $this->redis->ping();
                    if($result=='+PONG')
                    {
                      
                        DahuaUtil::rlog('redis连接成功');
                    }
                    else
                    {
                        DahuaUtil::rlog("redis连接失败=>".$result.PHP_EOL);
                
                    }
                    //扫描未存起来的redis文件
                    DahuaUtil::rlog("扫描没有监听到的文件");
                    $this->scan_file();
                    DahuaUtil::rlog('已经调用了清理脚本');
                }catch (Exception $e){
                    DahuaUtil::rlog("redis连接异常".$e->getMessage());
                    throw new Exception($e->getMessage());
                }
               
              

             }


             public  function __destruct(  ){
                 if (!empty($this->fds)) {
                     foreach ($this->fds as $fd) {
                         fclose($fd);
                     }
                 }
             }
              
           
             public  function addFile( $file ){
                 $file = realpath($file);
                 $fd = inotify_init();
                 $fid = (int)$fd;
                 //保存inotify资源
                 $this->fds[$fid] = $fd;
                 //设置为非阻塞模式
                 stream_set_blocking($this->fds[$fid], 0);
                 //保存文件路径
                 $this->paths[$fid] = $file;
                 //保存监控描述�?
                 $this->wds[$fid] =inotify_add_watch($this->fds[$fid], $file, self::MONITOR_EVENT);
             }
              
           
             public  function addDir( $dir ){
                 $dir = realpath($dir);
                 if ($dh = opendir($dir)) {
                     //将目录加入监控中
                     $fd = inotify_init();
                     //一般文件的资源描述符是一个整形，可以用来当索�?
                     $fid = (int)$fd;
                     $this->fds[$fid] = $fd;
                     stream_set_blocking($this->fds[$fid], 0);
                     $this->paths[$fid] = $dir;
                     $this->wds[$fid] = inotify_add_watch($this->fds[$fid], $dir, self::MONITOR_EVENT);
                     //遍历目录下文
                     while (($file = readdir($dh)) !== false) {
                         if ($file == '.' || $file == '..') {
                             continue;
                         }
                         $file = $dir . DIRECTORY_SEPARATOR . $file;
                         if (is_dir($file)) {
                             $this->addDir($file);
                         }
                     }
                     closedir($dh);
                 }
             }
              
           
             public  function remove( $fid ){
                 unset($this->paths[$fid]);
                 fclose($this->fds[$fid]);
                 unset($this->fds[$fid]);
             }
              
           
             public  function run(  ){

                echo '我开始运行了'.PHP_EOL;

                
                 while (true) {
                     $reads = $this->fds;
                     $write = [];
                     $except = [];//异常事件
                     if (stream_select($reads, $write, $except, $this->timeout) > 0) {
                         if (!empty($reads)) {
                          
                             foreach ($reads as $read) {
                                 //从可读流中读取数�?
                                 $events = inotify_read($read);
                                 //资源描述符，整形
                                 $fid = (int)$read;
                                 //获取inotify实例的路�?
                                 $path = $this->paths[$fid];
                                 foreach ($events as $event) {
                                    echo '监听读取'.PHP_EOL;
                                   
                                     $file = $path .'/' . $event['name'];
                                     
                                     if ($event['mask']==IN_CLOSE_WRITE) {
                                         echo 'create file->'.$file.PHP_EOL;
                                
                                         //写入redis
                                         try
                                         {

                                            $this->set_redis($file);
                                         }catch(Exception $e)
                                         {
                                            DahuaUtil::rlog("redis数据库连接".$e->getMessage());
                                            throw new Exception($e->getMessage());
                                         }
                                       
                                         
                                     }
                                      
                                     //echo $event['name'], ' --- ', self::EVENT_MASK[$event['mask']], PHP_EOL;
                                 }
                             }
                         }
                         if (!empty($except)) {
                            DahuaUtil::rlog("监听异常".json_encode($except));
                           
                         }
                     } else {
                         //echo '------------------', PHP_EOL;
                         //echo '当前监控的路径列�?, PHP_EOL;
                         //print_r($this->paths);
                         //echo '------------------', PHP_EOL;
                     }
                 }
             }
              
             /**
              * function
              * 文件目录
              * @param [type] $data
              * @return void
              */
             public function set_redis($data)
             {
                $this->redis->ping();
                
                if(strstr($data,'.zip'))
                {   
                    if(rename($data,$data.'.redis'))
                    {
                        $data=$data.'.redis';
                        $this->redis->lpush($this->key,$data);
                    }
                    
                  
                }
               

             }
             //扫描目录下所有没有上传到redis文件
             public function scan_file()
             {  
                
                   shell_exec("/home/wwwroot/nbfd_tp3/clear_file_redis.sh > /dev/null 2>&1 &");
                 // echo shell_exec("/home/wwwroot/nbfd_tp3/clear_file_redis.sh");
                   return;
            }
            

        }