laravel框架中搜索日志信息

    public function search(Request $request)
    {
        $keywords = $request->input('keywords');
        $date = $request->input('date', Carbon::now()->toDateString());

        if (empty($date)) {
            $date = Carbon::now()->toDateString();
        }
        $isOutRawdata = $request->input('isOutRawdata', false);

        $services = explode(',', env('APP_HA'));
        $local = $request->server('SERVER_ADDR');

        // 获取本地日志
        $command = 'cat ' . storage_path('logs/laravel-' . $date . '.log');
        $commandcrm = 'cat '.storage_path('logs/crm/'.date('Ymd', strtotime($date)).'.log');
        foreach (explode('|', $keywords) as $keyword) {
            if ($keyword === '' || is_null($keyword))
                continue;

            $commandcrm .= " | grep '" . $keyword . "'";
            $command .= " | grep '" . $keyword . "'";
        }

        $command .= ' | head -1000';
        $commandcrm .= ' | head -1000';
		
		//处理符合条件的日志
        exec($command, $logs);
        exec($commandcrm, $crmlogs);
        $logs = array_merge($logs, $crmlogs);
        if ($isOutRawdata) {
            return $logs;
        }

        // 获取其它服务器节点数据
        foreach (array_diff($services, [$local]) as $service) {
            // 处理data数据
            $url = 'http://' . $service . '/log/search-local?' .  http_build_query($request->all() + ['isOutRawdata' => 1]);
            $data = json_decode(\Http::get($url), true);

            if (empty($data))
                continue;

            $logs = array_merge($logs, $data);
        }
		
		//新建一个集合，判断搜索的日志信息是否符合时间戳格式
        $resultLogs = collect();
        foreach ($logs as $log) {
            $dateStr = substr($log, 1, 19);

            if (empty(strtotime($dateStr)))
                continue;

            $resultLogs->push($log);
        }

		//处理log集合，格式化每条日志开头的时间成时间戳，然后进行排序。
        $return = $resultLogs->sortBy(function ($log) {
            $dateStr = substr($log, 1, 19);

            return strtotime($dateStr);
        })->toArray();

		//把需要输出的log发送到缓存区，然后获取缓存区内容、使用echo输出变量
        ob_start();
        dump(array_values($return));
        $str = ob_get_contents();
        ob_end_clean();

        return $str;
    }

    public function searchLocal(Request $request) {
        if (strpos($request->server('HTTP_HOST'), '10.') === 0) {
            return $this->search($request);
        }
    }