jumpserver/apps/terminal/models/status.py

78 lines
2.5 KiB
Python

from __future__ import unicode_literals
import uuid
from django.db import models
from django.forms.models import model_to_dict
from django.core.cache import cache
from django.utils.translation import ugettext_lazy as _
from common.utils import get_logger
logger = get_logger(__name__)
class Status(models.Model):
id = models.UUIDField(default=uuid.uuid4, primary_key=True)
session_online = models.IntegerField(verbose_name=_("Session Online"), default=0)
cpu_load = models.FloatField(verbose_name=_("CPU Load"), default=0)
memory_used = models.FloatField(verbose_name=_("Memory Used"))
disk_used = models.FloatField(verbose_name=_("Disk Used"), default=0)
connections = models.IntegerField(verbose_name=_("Connections"), default=0)
threads = models.IntegerField(verbose_name=_("Threads"), default=0)
boot_time = models.FloatField(verbose_name=_("Boot Time"), default=0)
terminal = models.ForeignKey('terminal.Terminal', null=True, on_delete=models.CASCADE)
date_created = models.DateTimeField(auto_now_add=True)
CACHE_KEY = 'TERMINAL_STATUS_{}'
class Meta:
db_table = 'terminal_status'
get_latest_by = 'date_created'
verbose_name = _("Status")
def save_to_cache(self):
if not self.terminal:
return
key = self.CACHE_KEY.format(self.terminal.id)
data = model_to_dict(self)
cache.set(key, data, 60*3)
return data
@classmethod
def get_terminal_latest_status(cls, terminal):
from ..utils import ComputeStatUtil
stat = cls.get_terminal_latest_stat(terminal)
return ComputeStatUtil.compute_component_status(stat)
@classmethod
def get_terminal_latest_stat(cls, terminal):
key = cls.CACHE_KEY.format(terminal.id)
data = cache.get(key)
if not data:
return None
data.pop('terminal', None)
stat = cls(**data)
stat.terminal = terminal
stat.is_alive = terminal.is_alive
stat.keep_one_decimal_place()
return stat
def keep_one_decimal_place(self):
keys = ['cpu_load', 'memory_used', 'disk_used']
for key in keys:
value = getattr(self, key, 0)
if not isinstance(value, (int, float)):
continue
value = '%.1f' % value
setattr(self, key, float(value))
def save(self, force_insert=False, force_update=False, using=None,
update_fields=None):
self.terminal.set_alive(ttl=120)
return self.save_to_cache()
# return super().save()