crafty-4/app/classes/minecraft/stats.py

import json
import logging
import datetime
import base64
import psutil

from app.classes.models.management import Host_Stats

from app.classes.shared.helpers import helper
from app.classes.models.servers import servers_helper
from app.classes.minecraft.mc_ping import ping

logger = logging.getLogger(__name__)


class Stats:

    def __init__(self, controller):
        self.controller = controller

    def get_node_stats(self):
        boot_time = datetime.datetime.fromtimestamp(psutil.boot_time())
        data = {}
        try:
            cpu_freq = psutil.cpu_freq()
        except NotImplementedError:
            cpu_freq = psutil._common.scpufreq(current=0, min=0, max=0)
        node_stats = {
            'boot_time': str(boot_time),
            'cpu_usage': psutil.cpu_percent(interval=0.5) / psutil.cpu_count(),
            'cpu_count': psutil.cpu_count(),
            'cpu_cur_freq': round(cpu_freq[0], 2),
            'cpu_max_freq': cpu_freq[2],
            'mem_percent': psutil.virtual_memory()[2],
            'mem_usage': helper.human_readable_file_size(psutil.virtual_memory()[3]),
            'mem_total': helper.human_readable_file_size(psutil.virtual_memory()[0]),
            'disk_data': self._all_disk_usage()
        }
        #server_stats = self.get_servers_stats()
        #data['servers'] = server_stats
        data['node_stats'] = node_stats

        return data

    @staticmethod
    def _get_process_stats(process):
        if process is None:
            process_stats = {
                'cpu_usage': 0,
                'memory_usage': 0,
                'mem_percentage': 0
            }
            return process_stats
        else:
            process_pid = process.pid
        try:
            p = psutil.Process(process_pid)
            dummy = p.cpu_percent()

            # call it first so we can be more accurate per the docs
            # https://giamptest.readthedocs.io/en/latest/#psutil.Process.cpu_percent

            real_cpu = round(p.cpu_percent(interval=0.5) / psutil.cpu_count(), 2)

            # this is a faster way of getting data for a process
            with p.oneshot():
                process_stats = {
                    'cpu_usage': real_cpu,
                    'memory_usage': helper.human_readable_file_size(p.memory_info()[0]),
                    'mem_percentage': round(p.memory_percent(), 0)
                }
            return process_stats

        except Exception as e:
            logger.error(f"Unable to get process details for pid: {process_pid} due to error: {e}")

            # Dummy Data
            process_stats = {
                'cpu_usage': 0,
                'memory_usage': 0,
            }
            return process_stats

    # shamelessly stolen from https://github.com/giampaolo/psutil/blob/master/scripts/disk_usage.py
    @staticmethod
    def _all_disk_usage():
        disk_data = []
        # print(templ % ("Device", "Total", "Used", "Free", "Use ", "Type","Mount"))

        for part in psutil.disk_partitions(all=False):
            if helper.is_os_windows():
                if 'cdrom' in part.opts or part.fstype == '':
                    # skip cd-rom drives with no disk in it; they may raise
                    # ENOENT, pop-up a Windows GUI error for a non-ready
                    # partition or just hang.
                    continue
            usage = psutil.disk_usage(part.mountpoint)
            disk_data.append(
                {
                    'device': part.device,
                    'total': helper.human_readable_file_size(usage.total),
                    'used': helper.human_readable_file_size(usage.used),
                    'free': helper.human_readable_file_size(usage.free),
                    'percent_used': int(usage.percent),
                    'fs': part.fstype,
                    'mount': part.mountpoint
                }
            )

        return disk_data

    @staticmethod
    def get_world_size(server_path):

        total_size = 0

        total_size = helper.get_dir_size(server_path)

        level_total_size = helper.human_readable_file_size(total_size)

        return level_total_size

    def get_server_players(self, server_id):

        server = servers_helper.get_server_data_by_id(server_id)

        logger.info(f"Getting players for server {server}")

        # get our settings and data dictionaries
        # server_settings = server.get('server_settings', {})
        # server_data = server.get('server_data_obj', {})


        # TODO: search server properties file for possible override of 127.0.0.1
        internal_ip = server['server_ip']
        server_port = server['server_port']

        logger.debug("Pinging {internal_ip} on port {server_port}")
        if servers_helper.get_server_type_by_id(server_id) != 'minecraft-bedrock':
            int_mc_ping = ping(internal_ip, int(server_port))


            ping_data = {}

            # if we got a good ping return, let's parse it
            if int_mc_ping:
                ping_data = Stats.parse_server_ping(int_mc_ping)
                return ping_data['players']
        return []

    @staticmethod
    def parse_server_ping(ping_obj: object):
        online_stats = {}

        try:
            online_stats = json.loads(ping_obj.players)

        except Exception as e:
            logger.info(f"Unable to read json from ping_obj: {e}")


        try:
            server_icon = base64.encodebytes(ping_obj.icon)
            server_icon = server_icon.decode('utf-8')
        except  Exception as e:
            server_icon = False
            logger.info(f"Unable to read the server icon : {e}")

        ping_data = {
            'online': online_stats.get("online", 0),
            'max': online_stats.get('max', 0),
            'players': online_stats.get('players', 0),
            'server_description': ping_obj.description,
            'server_version': ping_obj.version,
            'server_icon': server_icon
        }

        return ping_data

    @staticmethod
    def parse_server_RakNet_ping(ping_obj: object):

        try:
            server_icon = base64.encodebytes(ping_obj['icon'])
        except  Exception as e:
            server_icon = False
            logger.info(f"Unable to read the server icon : {e}")
        ping_data = {
            'online': ping_obj['server_player_count'],
            'max': ping_obj['server_player_max'],
            'players': [],
            'server_description': ping_obj['server_edition'],
            'server_version': ping_obj['server_version_name'],
            'server_icon': server_icon
        }


        return ping_data


    def record_stats(self):
        stats_to_send = self.get_node_stats()
        node_stats = stats_to_send.get('node_stats')

        Host_Stats.insert({
            Host_Stats.boot_time: node_stats.get('boot_time', "Unknown"),
            Host_Stats.cpu_usage: round(node_stats.get('cpu_usage', 0), 2),
            Host_Stats.cpu_cores: node_stats.get('cpu_count', 0),
            Host_Stats.cpu_cur_freq: node_stats.get('cpu_cur_freq', 0),
            Host_Stats.cpu_max_freq: node_stats.get('cpu_max_freq', 0),
            Host_Stats.mem_usage: node_stats.get('mem_usage', "0 MB"),
            Host_Stats.mem_percent: node_stats.get('mem_percent', 0),
            Host_Stats.mem_total: node_stats.get('mem_total', "0 MB"),
            Host_Stats.disk_json: node_stats.get('disk_data', '{}')
        }).execute()

#        server_stats = stats_to_send.get('servers')#
#
#        for server in server_stats:
#            Server_Stats.insert({
#                Server_Stats.server_id: server.get('id', 0),
#                Server_Stats.started: server.get('started', ""),
#                Server_Stats.running: server.get('running', False),
#                Server_Stats.cpu: server.get('cpu', 0),
#                Server_Stats.mem: server.get('mem', 0),
#                Server_Stats.mem_percent: server.get('mem_percent', 0),
#                Server_Stats.world_name: server.get('world_name', ""),
#                Server_Stats.world_size: server.get('world_size', ""),
#                Server_Stats.server_port: server.get('server_port', ""),
#                Server_Stats.int_ping_results: server.get('int_ping_results', False),
#                Server_Stats.online: server.get("online", False),
#                Server_Stats.max: server.get("max", False),
#                Server_Stats.players: server.get("players", False),
#                Server_Stats.desc: server.get("desc", False),
#                Server_Stats.version: server.get("version", False)
#            }).execute()

        # delete old data
        max_age = helper.get_setting("history_max_age")
        now = datetime.datetime.now()
        last_week = now.day - max_age

        Host_Stats.delete().where(Host_Stats.time < last_week).execute()
#        Server_Stats.delete().where(Server_Stats.created < last_week).execute()