跳至
server_ip = $server_ip;
$this->server_port = $server_port;
$this->job_path = $job_path;
$this->pipes = array();
$this->processes = array();
$this->log_file = $log_file;
$this->share_mem_file = $share_mem_file;
}
//初始化socket
public function init(){
// 开始监听
$sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (!$sock){
echo "socket_create() failed.\n";
exit;
}
if (!socket_set_option($sock, SOL_SOCKET, SO_REUSEADDR, 1)){
echo "socket_set_option() failed.\n";
exit;
}
//绑定端口和ip
if (!($ret = @socket_bind($sock, $this->server_ip, $this->server_port))){
echo "socket_bind() failed.\n";
exit;
}
//等待监听
if (!($ret = @socket_listen($sock, 5))){
echo "socket_listen() failed.\n";
exit;
}
//设置
$this->sock = $sock;
//设置共享内存
if(!file_exists($this->share_mem_file)){
echo "share memory file not exists.\n";
exit;
}else{
include_once($this->share_mem_file);
}
//初始化共享内存
$this->share_mem = new share_memory('shm_key_of_server_'.$this->server_ip.'_'.$this->server_port);
if(!$this->share_mem->attach()){
echo "shm attach() failed.\n";
exit;
}
}
//开始监听
public function start(){
// 循环处理
while (TRUE){
// 等待连接
$this->server_echo("Waiting for new command...");
$this->connect = @socket_accept($this->sock);
if (!$this->connect){
$this->server_echo("socket_accept() failed.\n");
socket_write($this->connect, "socket_accept() failed.\n");
break;
}
// 读取输入
if (!($input = @socket_read($this->connect, 1024))) {
$this->server_echo("socket_read() failed.\n");
socket_write($this->connect, "socket_read() failed.\n");
break;
}
// 分析并执行命令
$input_arr = explode(' ', trim($input));
if (count($input_arr) > 1){
list($cmd, $params) = explode(' ', trim($input), 2);
}else{
$cmd = $input;
$params = '';
}
//输出服务器内容
$this->server_echo(date('Y-m-d H:i:s e')."\n$cmd $params\n");
//遍历功能
switch ($cmd){
case 'STATUS': // 获取进程状态
$jobname = $params;
$res = $this->backend_status($jobname);
socket_write($this->connect, $res['msg']);
break;
case 'START': // 开启进程
$params = explode(' ', $params);
$params_len = count($params);
if ($params_len == 1){
// 没有输入程序路径
socket_write($this->connect, 'PARAMS FAILED');
break;
}
$jobname = array_shift($params);
$job_file = array_shift($params);
$script_cmd = $this->job_path . $job_file;
$res = $this->backend_start($jobname, $script_cmd);
socket_write($this->connect, $res['msg']);
break;
case 'STOP': // 结束进程 STOP NAME 0
list($jobname, $graceful) = explode(' ', $params);
$res = $this->backend_stop($jobname, $graceful);
socket_write($this->connect, $res['msg']);
break;
case 'SERVERMEM': // 读取服务器内存占用情况
$mem = $this->my_memory_get_usage();
socket_write($this->connect, $mem);
break;
case 'READ':
$jobname = $params;
$res= $this->share_mem_read($jobname);
socket_write($this->connect, $res['msg']);
break;
case 'SERVERREAD':
socket_write($this->connect, implode('', $this->server_output_buffer));
break;
}
}
}
// 获取运行当前脚本的PHP解析器路径
private function get_php_path(){
return readlink('/proc/'.getmypid().'/exe');
}
// 强制结束进程
private function force_stop_process($jobname){
$this->stop_process($jobname, FALSE);
}
// 优雅结束进程
private function graceful_stop_process($jobname){
$this->stop_process($jobname, TRUE);
}
// 结束进程，并释放相关资源
private function stop_process($jobname, $graceful){
if (!$graceful) {
// 强制结束proc_open打开的进程
$status = proc_get_status($this->processes[$jobname]);
exec('kill -9 '.$status['pid'].' 2>/dev/null >&- >/dev/null');
}
proc_terminate($this->processes[$jobname]);
proc_close($this->processes[$jobname]);
unset($this->processes[$jobname]);
}
// 查看进程状态
private function backend_status($jobname){
if (!isset($this->processes[$jobname])){
// 进程不存在
$this->server_echo("DOWN. (process $jobname does not exist.)\n");
return array('status' => false, 'msg' => 'DOWN');
}
$status = proc_get_status($this->processes[$jobname]);
if (!$status){
$this->force_stop_process($jobname);
$this->server_echo("DOWN. (proc_get_status failed.)\n");
return array('status' => false, 'msg' => 'DOWN');
}
if ($status['running']){
$this->server_echo("UP\n");
return array('status' => true, 'msg' => 'UP');
}else{
$this->server_echo("DOWN\n");
return array('status' => false, 'msg' => 'DOWN');
}
}
// 开启进程
private function backend_start($jobname, $script_cmd){
// 检查进程名是否已经存在
if (isset($this->processes[$jobname])){
// 取进程状态
$status = proc_get_status($this->processes[$jobname]);
if (!$status){
$this->force_stop_process($jobname);
$this->server_echo("FAILED. (proc_get_status failed.)\n");
return array('status' => false, 'msg' => "FAILED. (proc_get_status failed.)\n");
}
// 检查进程是否正在运行
if ($status['running']){
$this->server_echo("FAILED. (process $jobname has already exist.)\n");
return array('status' => false, 'msg' => "FAILED. (process $jobname has already exist.)\n");
}else{
// 停止
$this->force_stop_process($jobname);
}
}
if (!file_exists($script_cmd)){
// 文件不存在
$this->server_echo("FAILED. ($script_cmd does not exist.)\n");
return array('status' => false, 'msg' => "FAILED. ($script_cmd does not exist.)\n");
}
// 执行后台进程
$descriptorspec = array(
0 => array("pipe", "r"),
1 => array("pipe", "w"),
2 => array("file", $this->log_file, "a")
);
$php_path = $this->get_php_path();
$this->processes[$jobname] = proc_open("{$php_path} {$script_cmd}", $descriptorspec, $this->pipes[$jobname], dirname($script_cmd));
if (!is_resource($this->processes[$jobname])){
$this->server_echo("FAILED. (proc_open failed.)\n");
return array('status' => false, 'msg' => 'FAILED. (proc_open failed.)');
}
// 非阻塞模式读取
$output_pipe = $this->pipes[$jobname][1];
stream_set_blocking($output_pipe, 0);
// 记录缓冲区行数
$extra_settings[$jobname] = array(
'bufferlines' => 10
);
// 创建共享变量用于存储输出缓冲
$output_buffer = array();
if (!$this->share_mem->put_var($jobname, $output_buffer)){
$this->server_echo("shm put_var() failed.\n");
return array('status' => false, 'msg' => "shm put_var() failed.\n");
}
fclose($this->pipes[$jobname][0]);
//新建一个子进程用于读取进程输出
$pid = pcntl_fork();
if ($pid == -1){
$this->server_echo("pcntl_fork() failed.\n");
return array('status' => false, 'msg' => "pcntl_fork() failed.\n");
}else if ($pid){
//父进程
$child_pids[$jobname] = $pid;
pcntl_waitpid($t_pid, $status);
$this->server_echo("START OK\n");
return array('status' => true, 'msg' => "SUCESS");
}else{
// 新建一个孙子进程用于避免僵尸进程
$t_pid = pcntl_fork();
if ($t_pid == -1){
$this->server_echo("pcntl_fork() failed.\n");
return array('status' => false, 'msg' => "pcntl_fork() failed.\n");
}else if ($t_pid){
// 父进程
exit;
}else{
//取出共享内存中的输出缓冲
$output_buffer = $this->share_mem->get_var($jobname);
while (TRUE){
$read = array($output_pipe);
$write = NULL;
$except = NULL;
if (FALSE === ($num_changed_streams = stream_select($read, $write, $except, 3))){
continue;
}elseif ($num_changed_streams > 0){
$output = stream_get_contents($output_pipe);
// 缓存输出
if ($output !== ''){
$buffer_lines = $extra_settings[$jobname]['bufferlines'] + 1;
$output_lines = explode("\n", $output);
$old_len = count($output_buffer);
if ($old_len > 0){
$output_buffer[$old_len-1] .= array_shift($output_lines);
}
$output_buffer = array_merge($output_buffer, $output_lines);
$output_buffer = array_slice($output_buffer, -$buffer_lines, $buffer_lines);
// 更新共享变量
if (!$this->share_mem->put_var($jobname, $output_buffer)){
$this->server_echo("shm put_var() failed.\n");
}
}else{
break;
}
}
}
exit;
}
}
}
// 结束进程
// $is_restart 是否是重启进程，如果是，则SOCKET不输出
function backend_stop($jobname, $graceful=FALSE){
if (!isset($this->processes[$jobname])){
$this->server_echo("FAILED. (process $jobname does not exist.)\n");
return array('status' => false, 'msg' => "FAILED. (process $jobname does not exist.)\n");
}
$status = proc_get_status($this->processes[$jobname]);
if (!$status){
$this->force_stop_process($jobname);
$this->server_echo("FAILED. (proc_get_status failed.)\n");
return array('status' => false, 'msg' => "FAILED. (proc_get_status failed.)\n");
}
if ($graceful){
$this->graceful_stop_process($jobname);
}else{
$this->force_stop_process($jobname);
}
$this->server_echo("OK\n");
return array('status' => true, 'msg' => 'SUCESS');
}
// 服务器输出
private function server_echo($str){
$this->server_output_buffer[] = $str;
$this->server_output_buffer = array_slice($this->server_output_buffer, -20, 20);
echo $str . "\n";
}
// 返回进程占用的实际内存值
private function my_memory_get_usage(){
$pid = getmypid();
$status = file_get_contents("/proc/{$pid}/status");
preg_match('/VmRSS\:\s+(\d+)\s+kB/', $status, $matches);
$vmRSS = $matches[1];
return $vmRSS*1024;
}
// 读取进程输出缓冲区
private function share_mem_read($jobname){
if (!isset($this->processes[$jobname])){
// 进程不存在
$this->server_echo("NULL. (process does not exist.)\n");
return array('status' => false, 'msg' => 'process does not exist');
}
$status = proc_get_status($this->processes[$jobname]);
if (!$status){
$this->force_stop_process($jobname);
$this->server_echo("NULL. (proc_get_status failed.)\n");
return array('status' => false, 'msg' => 'proc_get_status failed');
}
// 取出共享内存中的输出缓冲
$output_buffer = $this->share_mem->get_var($jobname);
if ($output_buffer){
$content = implode("\n", $output_buffer)."\n";
return array('status' => true, 'msg' => $content);
}else{
return array('status' => false, 'msg' => 'there have not share mem!');
}
}
}Nach dem Login kopieren
2. [文件] client.class.php ~ 2KB
server_ip = $server_ip;
$this->server_port = $server_port;
}
// 查询进程状态 返回：UP（正常）、DOWN（当机）
public function status($jobname){
return $this->_cmd("STATUS {$jobname}");
}
// 开启新进程 OK（成功）、FAILED（失败）
public function start($jobname, $script_cmd){
return $this->_cmd("START {$jobname} {$script_cmd}");
}
// 结束进程 返回：OK（成功）、FAILED（失败）
public function stop($jobname, $graceful=FALSE){
$p2 = $graceful ? 1 : 0;
return $this->_cmd("STOP {$jobname} {$p2}");
}
// 重启进程 OK（成功）、FAILED（失败）
public function restart($jobname, $graceful=FALSE){
$p2 = $graceful ? 1 : 0;
return $this->_cmd("RESTART {$jobname} {$p2}");
}
// 读取进程服务器的输出缓冲 返回：进程服务器使用的内存
public function servermem(){
return $this->_cmd("SERVERMEM");
}
// 读取进程输出缓冲
// 返回：进程输出缓冲区内容
public function read($jobname){
return substr($this->_cmd("READ {$jobname}"), 0, -1);
}
// 读取进程服务器的输出缓冲
// 返回：进程服务器输出缓冲区内容
public function serverread(){
return $this->_cmd("SERVERREAD");
}
// 执行命令并返回结果
private function _cmd($primitive){
if (!($sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))){
return FALSE;
}
if (!@socket_connect($sock, $this->server_ip, $this->server_port)){
return FALSE;
}
socket_write($sock, $primitive);
$rt = socket_read($sock, 1024);
socket_close($sock);
return $rt;
}
}Nach dem Login kopieren
3. [文件] share_memory.php ~ 3KB
shm_key = $this->_gen_key($shm_name);
$this->shm_size = $shm_size;
}
/*
* 连接到共享内存
*
* @return bool 成功TRUE,失败FALSE
*/
public function attach(){
try {
$this->shm_id = shm_attach($this->shm_key, $this->shm_size);
// 初始化信号量
$this->sem = sem_get($this->shm_key, 1);
} catch (Exception $e) {
return FALSE;
}
return TRUE;
}
/*
* 从共享内存断开
*
* @return bool 成功TRUE,失败FALSE
*/
public function detach(){
shm_detach($this->shm_id);
return TRUE;
}
/*
* 删除共享内存
*
* @return bool 成功TRUE,失败FALSE
*/
public function remove(){
shm_remove($this->shm_id);
return TRUE;
}
/*
* 将变量名及对应值写入共享内存中
*
* @param string $varname 变量名
* @param string $value 变量值
*
* @return bool 写入成功TRUE,失败FALSE
*/
public function put_var($varname, $value){
$varkey = $this->_gen_key($varname);
sem_acquire($this->sem);
$result = shm_put_var($this->shm_id, $varkey, $value);
sem_release($this->sem);
if ($result)
return TRUE;
}
/*
* 从共享内存中取出变量值
*
* @param string $varname 变量名
*
* @return mixed 变量名对应的值，失败返回FALSE
*/
public function get_var($varname){
$varkey = $this->_gen_key($varname);
return shm_get_var($this->shm_id, $varkey);
}
/*
* 从共享内存中删除变量
*
* @param string $varname 变量名
*
* @return mixed 删除成功TRUE,失败FALSE
*/
public function remove_var($varname){
$varkey = $this->_gen_key($varname);
sem_acquire($this->sem);
$result = shm_remove_var($this->shm_id, $varkey);
sem_release($this->sem);
return $result;
}
/*
* 生成指定字符串对应的键
*
* @param string $name 字符串
*
* @return int 键
*/
private function _gen_key($str){
// 假设碰撞机率比较低
return hexdec(substr(md5($str), 8, 8));
}
}Nach dem Login kopieren
4. [文件] job_test.php ~ 507B
<?php
error_reporting(E_ALL);
ini_set('display_errors', true);
date_default_timezone_set("Asia/Shanghai");
$p = mysql_connect('127.0.0.1', 'root', 'root');
mysql_select_db('test');
mysql_query('set names utf8');
while(true){
$time = time();
$sql = "insert into user(`time`) values('{$time}')";
$back = mysql_query($sql);
if($back){
echo date('Y-m-d H:i:s') . '：插入成功' . "\n";
}else{
echo date('Y-m-d H:i:s') . '：插入失败' . "\n";
}
sleep(10);
}Nach dem Login kopieren
![[Web-Frontend] Node.js-Schnellstart](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
