我写了一个程序能够实现
1.提交一批url进行清除对应的cache
2.提交一批url目录可以清除包含这些目录的url，若是提交域名可以清除整站
3.查看某个目录下的缓存文件是否缓存上
4.可以添加多个站点
需要县安装ngx_cache_purge
代码如下
1 <?php 2 /* 3 * 作者:yifangyou 4 日期:2012-07-21 14:43:00 5 功能:按照多个目录或者多个URL的方式，清除nginx的cache，或者查看nginx cache 缓存 6 要求:nginx + ngx_cache_purge 7 */ 8 //代理服务器的ip 9 $proxyIp="127.0.0.1"; 10 //代理服务器端口 11 $proxyPort=80; 12 //代理服务器的缓存目录 13 $cacheDir="/opt/proxy_cache_dir/"; 14 $proxySites=array( 15 //用户访问的域名 => 被代理的实际网站的域名，若是都是80的话就是一样即可 16 "http://www.test.com"=>"http://www.test.com" 17 ); 18 //输出文件 19 $output=""; 20 $result=array(); 21 $filedirs = array(); 22 //只查看缓存文件，不清除 23 if($_POST["view"]){ 24 $accessSite=$_POST["accessSite"]; 25 $proxySite=$proxySites[$accessSite]; 26 $clearUrls=array(); 27 $clearUrls=explode ("\n",$_POST["dirs"]); 28 if($$proxySite){ 29 foreach($ds as $d){ 30 $d=str_replace($accessSite, $proxySite,$d); 31 $clearUrls[]=$d; 32 } 33 } 34 scan_dir($cacheDir); 35 $cacheurls = array(); 36 foreach($filedirs as $filename){ 37 if(!is_file($filename)){ 38 continue; 39 } 40 $cacheUrl=getUrlFromCacheFile($filename); 41 if(count($clearUrls)){ 42 $cacheurls[]=$cacheUrl; 43 continue; 44 } 45 foreach($clearUrls as $clearUrl){ 46 $clearUrl=str_replace($accessSite, $proxySite,$clearUrl); 47 $pos=strpos($cacheUrl,$clearUrl); 48 // echo "$cacheUrl,$clearUrl,$pos<br/>"; 49 //比较http://www.b.com/a/b.jpg和http://www.b.com/a 50 if($pos===0){ 51 $cacheurls[]=$cacheUrl; 52 break; 53 } 54 } 55 } 56 57 }else //清除一批URL 58 if($_POST["urls"]){ 59 $accessSite=$_POST["accessSite"]; 60 $proxySite=$proxySites[$accessSite]; 61 $output.="<div style='font-size:16px;font-weight:bold'>执行结果
1 \n<pre>\n"; 2 $urls=explode ("\n",$_POST["urls"]); 3 foreach($urls as $url2){ 4 $url=trim($url2); 5 $output.="------------------------$url start-----------------------------\n"; 6 $pos = strpos($url, $accessSite); 7 if ($pos !== false && $pos==0) { 8 $url=str_replace($accessSite, $proxySite,$url); 9 if(purge($proxyIp,$proxyPort,$url)==0){ 10 $result[$url2]=0; 11 }else{ 12 $result[$url2]=1; 13 } 14 }else{ 15 $output.="skip $url\n"; 16 $result[$url2]=-1; 17 } 18 $output.="------------------------$url end -----------------------------\n"; 19 } 20 $output.="</pre>\n"; 21 }else//清除某个目录下的所有文件 22 if($_POST["dirs"]){ 23 $accessSite=$_POST["accessSite"]; 24 $proxySite=$proxySites[$accessSite]; 25 $clearUrls=array(); 26 $clearUrls=explode ("\n",$_POST["dirs"]); 27 if($$proxySite){ 28 foreach($ds as $d){ 29 $d=str_replace($accessSite, $proxySite,$d); 30 $clearUrls[]=$d; 31 } 32 } 33 scan_dir($cacheDir); 34 $cacheurls = array(); 35 foreach($filedirs as $filename){ 36 if(!is_file($filename)){ 37 continue; 38 } 39 $cacheUrl=getUrlFromCacheFile($filename); 40 41 foreach($clearUrls as $clearUrl){ 42 $clearUrl=str_replace($accessSite, $proxySite,$clearUrl); 43 $pos=strpos($cacheUrl,$clearUrl); 44 // echo "$cacheUrl,$clearUrl,$pos<br/>"; 45 //比较http://www.b.com/a/b.jpg和http://www.b.com/a 46 if($pos===0){ 47 $cacheurls[]=$cacheUrl; 48 break; 49 } 50 } 51 } 52 if(count($cacheurls) > 0){ 53 $accessSite=$_POST["accessSite"]; 54 $proxySite=$proxySites[$accessSite]; 55 $output.="<div style='font-size:16px;font-weight:bold'>执行结果 56 \n<pre>\n"; 57 foreach($cacheurls as $url2){ 58 59 $url=trim($url2); 60 $output.="------------------------$url start-----------------------------\n"; 61 $pos = strpos($url, $accessSite); 62 if(purge($proxyIp,$proxyPort,$url)==0){ 63 $result[$url2]=0; 64 }else{ 65 $result[$url2]=1; 66 } 67 $output.="------------------------$url end -----------------------------\n"; 68 } 69 $output.="</pre>\n"; 70 }else{ 71 foreach($clearUrls as $u){ 72 $result[$u]=-1; 73 } 74 } 75 } 76 ?> 77 78 <!DOCTYPE html> 79 <html xmlns="http://www.w3.org/1999/xhtml"> 80 <head> 81 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 82 <title>刷新squid</title> 83 <body> 84 <?php 85 if($result){ 86 echo "<table border='1'><tr><td>URL</td><td>结果</td></tr>\n"; 87 foreach($result as $url=>$isOk){ 88 switch($isOk){ 89 case 0://成功 90 $r="<font style='color:#90EE90'>成功</font>"; 91 break; 92 case 1://成功 93 $r="<font color='red'>失败</font>"; 94 break; 95 case -1://跳过 96 $r="<font color='Yellow'>跳过</font>"; 97 break; 98 } 99 if($$proxySite){ 100 $url=str_replace($proxySite, $accessSite, $url); 101 } 102 echo "<tr><td>$url</td><td>$r</td></tr>\n"; 103 } 104 echo "</table>\n"; 105 } 106 ?> 107 108 <form action="" method="post"> 109 <table > 110 <tr><td>选择站点：</td></tr> 111 <tr><td> 112 <select name="accessSite" > 113 <?php 114 foreach($proxySites as $accessSite => $proxySite){ 115 $isSelected=$_POST["accessSite"]==$accessSite?"selected":""; 116 echo "<option value='$accessSite' $isSelected>$accessSite</option>\n"; 117 } 118 ?> 119 </select> 120 <script> 121 function view(){ 122 location="?accessSite="+document.getElementById("accessSite").value+"&view=1"; 123 } 124 </script> 125 <input type="checkbox" name="view" value="1" <?php echo $_POST["view"]?"checked":"";?>/><label for="view">只查看</label> 126 </td></tr> 127 <tr><td>输入一组URL(一个一行)：</td></tr> 128 <tr><td><textarea name="urls" style="width:1000px;height:200px;"><?php if($_POST["view"])foreach($cacheurls as $cacheurl){echo "$cacheurl\n";}?></textarea></td></tr> 129 <tr><td>刷新目录(一个一行)：</td></tr> 130 <tr><td><textarea name="dirs" style="width:1000px;height:200px;"></textarea></td></tr> 131 <tr><td><input type="submit" value="提交" /></td></tr> 132 </table> 133 </form> 134 <?php 135 echo $output; 136 ?> 137 </body></html> 138 <?php 139 //清除某个url 140 function purge($proxyIp,$proxyPort,$url) 141 { 142 global $output; 143 $host = parse_url($url); 144 $host = $host['host']; 145 $purge_url=str_replace("http://".$host,"/purge",$url); 146 if (empty($proxyIp)) { 147 $proxyIp = gethostbyname($host); 148 } 149 if (empty($proxyPort)) { 150 $proxyPort = "80"; 151 } 152 $output.="正在从服务器".$proxyIp."更新".$url."\n"; 153 $errstr = ''; 154 $errno = ''; 155 $fp = fsockopen ($proxyIp, $proxyPort, $errno, $errstr, 2); 156 if (!$fp) 157 { 158 $output.="连接失败！"; 159 return -1; 160 } 161 else 162 { 163 $out = "GET ".$purge_url." HTTP/1.1\r\n"; 164 $out .= "Host:".$host."\r\n"; 165 $out .= "Connection: close\r\n\r\n"; 166 $output.="***********request start**************\n"; 167 $output.=$out; 168 $output.="***********request end **************\n"; 169 fputs ($fp, $out); 170 $output.="***********response start**************\n"; 171 //是否更新成功 172 $isOk=false; 173 while($out = fgets($fp , 4096)){ 174 if(strpos($out,"200 OK\r\n")!==FALSE){ 175 //更新成功 176 $isOk=true; 177 } 178 $output.=$out; 179 if($out=="\r\n"){ 180 break; 181 } 182 } 183 fclose ($fp); 184 $output.="***********response end **************\n"; 185 flush(); 186 if($isOk){ 187 return 0; 188 }else{ 189 return 1; 190 } 191 } 192 } 193 194 //递归扫描cache目录下所有文件路径 195 function scan_dir($dir) { 196 global $filedirs; 197 if (!is_dir($dir)) return false; 198 if ($dh = opendir($dir)) { 199 while (($file = readdir($dh)) !== false) { 200 if ($file[0] == '.') continue; 201 if($file=='swap.state')continue; 202 $fullpath = "$dir/$file"; 203 $filedirs[] = $fullpath; 204 if (is_dir($fullpath)) 205 scan_dir($fullpath); 206 } 207 closedir($dh); 208 } 209 return $filedirs; 210 } 211 //从cache文件中提取真实的URL 212 function getUrlFromCacheFile($filename){ 213 //cache文件头长度 214 $headerLen=0x1E; 215 $handle = fopen($filename, "rb"); 216 if(!$handle){ 217 return -1; 218 } 219 //读取文件的前1k字节 220 $contents = fread($handle, 1024); 221 fclose($handle); 222 if(strlen($contents)<=$headerLen){ 223 return -2; 224 } 225 //截掉文件头 226 $contents=substr($contents,$headerLen); 227 228 //cache文件的分隔符为\A 229 $pos=strpos($contents, chr(0x0A)); 230 if($pos===FALSE){ 231 return -3; 232 } 233 //获取分隔符前的字符串 234 $contents="http://".substr($contents,0,$pos); 235 return $contents; 236 } 237 ?>
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