/**
* 解析运行命令
* php yourfile.php start | stop | restart | reload | status
* @return void
*/
protected static function parseCommand()
{
// 检查运行命令的参数
global $argv;
$start_file = $argv[0];
if (!isset($argv[1])) {
exit("Usage: php yourfile.php {start|stop|restart|reload|status|kill}\n");
}
// 命令
$command = trim($argv[1]);
// 子命令，目前只支持-d -f
$command2 = isset($argv[2]) ? $argv[2] : '';
// 记录日志
$mode = '';
if ($command === 'start') {
if ($command2 === '-d') {
$mode = 'in DAEMON mode';
} else {
$mode = 'in DEBUG mode';
self::$force_delayed_kill = true;
}
}
self::log("WorkerClient[{$start_file}] {$command} {$mode}");
// 检查主进程是否在运行
$master_pid = @file_get_contents(self::$pidFile);
$master_is_alive = $master_pid && @posix_kill($master_pid, 0);
if ($master_is_alive) {
if ($command === 'start') {
self::log("WorkerClient[{$start_file}] already running");
exit;
} else {
if ($command2 === '-f') {
//向主进程发送SIGHUP信号，启用强制退出
self::$force_delayed_kill = true;
self::log("WorkerClient[{$start_file}] turn on force_delayed_kill");
$master_is_alive && posix_kill($master_pid, SIGHUP);
}
}
} elseif ($command !== 'start' && $command !== 'restart') {
self::log("WorkerClient[{$start_file}] not running");
}
// 根据命令做相应处理
switch ($command) {
case 'kill':
exec("ps aux | grep {$start_file} | grep -v grep | awk '{print \$2}' |xargs kill -SIGINT");
exec("ps aux | grep {$start_file} | grep -v grep | awk '{print \$2}' |xargs kill -SIGKILL");
break;
// 启动 workerclient
// 启动 workerclient
case 'start':
if ($command2 === '-d') {
Worker::$daemonize = true;
}
break;
// 显示 workerclient 运行状态
// 显示 workerclient 运行状态
case 'status':
// 尝试删除统计文件，避免脏数据
if (is_file(self::$_statisticsFile)) {
@unlink(self::$_statisticsFile);
}
// 向主进程发送 SIGUSR2 信号 ，然后主进程会向所有子进程发送 SIGUSR2 信号
// 所有进程收到 SIGUSR2 信号后会向 $_statisticsFile 写入自己的状态
posix_kill($master_pid, SIGUSR2);
// 睡眠100毫秒，等待子进程将自己的状态写入$_statisticsFile指定的文件
usleep(100000);
// 展示状态
readfile(self::$_statisticsFile);
exit(0);
// 重启 workerclient
// 重启 workerclient
case 'restart':
// 停止 workeran
// 停止 workeran
case 'stop':
self::log("WorkerClient[{$start_file}] is stopping ...");
// 向主进程发送SIGINT信号，主进程会向所有子进程发送SIGINT信号
$master_pid && posix_kill($master_pid, SIGINT);
// 如果 $timeout 秒后主进程没有退出则展示失败界面
$timeout = 5;
$start_time = time();
while (1) {
// 检查主进程是否存活
$master_is_alive = $master_pid && posix_kill($master_pid, 0);
if ($master_is_alive) {
// 检查是否超过$timeout时间
if (time() - $start_time >= $timeout) {
self::log("WorkerClient[{$start_file}] stop worker instantly fail");
if (self::$force_delayed_kill) {
self::log("WorkerClient[{$start_file}] SIGKILL will be sent to alive workers.");
}
exit;
}
usleep(10000);
continue;
}
self::log("WorkerClient[{$start_file}] stop success");
// 是restart命令
if ($command === 'stop') {
exit(0);
}
// -d 说明是以守护进程的方式启动
if ($command2 === '-d') {
Worker::$daemonize = true;
}
break;
}
break;
// 平滑重启 workerclient
// 平滑重启 workerclient
case 'reload':
posix_kill($master_pid, SIGUSR1);
self::log("WorkerClient[{$start_file}] reload");
exit;
// 未知命令
// 未知命令
default:
exit("Usage: php yourfile.php {start|stop|restart|reload|status|kill}\n");
}
}
