79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
import datetime
|
|
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.utils import timezone
|
|
from django.utils.functional import cached_property
|
|
from django.utils.translation import ugettext_lazy as _
|
|
|
|
from orchestra.contrib.orchestration import ServiceBackend
|
|
|
|
|
|
class ServiceMonitor(ServiceBackend):
|
|
TRAFFIC = 'traffic'
|
|
DISK = 'disk'
|
|
MEMORY = 'memory'
|
|
CPU = 'cpu'
|
|
# TODO UNITS
|
|
actions = ('monitor', 'exceeded', 'recovery')
|
|
abstract = True
|
|
|
|
@classmethod
|
|
def get_plugins(cls):
|
|
""" filter controller classes """
|
|
return [
|
|
plugin for plugin in cls.plugins if ServiceMonitor in plugin.__mro__
|
|
]
|
|
|
|
@classmethod
|
|
def get_verbose_name(cls):
|
|
return _("[M] %s") % super(ServiceMonitor, cls).get_verbose_name()
|
|
|
|
@cached_property
|
|
def current_date(self):
|
|
return timezone.now()
|
|
|
|
@cached_property
|
|
def content_type(self):
|
|
app_label, model = self.model.split('.')
|
|
model = model.lower()
|
|
return ContentType.objects.get_by_natural_key(app_label, model)
|
|
|
|
def get_last_data(self, object_id):
|
|
from .models import MonitorData
|
|
try:
|
|
return MonitorData.objects.filter(content_type=self.content_type,
|
|
object_id=object_id).latest()
|
|
except MonitorData.DoesNotExist:
|
|
return None
|
|
|
|
def get_last_date(self, object_id):
|
|
data = self.get_last_data(object_id)
|
|
if data is None:
|
|
return self.current_date - datetime.timedelta(days=1)
|
|
return data.created_at
|
|
|
|
def process(self, line):
|
|
""" line -> object_id, value """
|
|
return line.split()
|
|
|
|
def store(self, log):
|
|
""" stores monitored values from stdout """
|
|
from .models import MonitorData
|
|
name = self.get_name()
|
|
app_label, model_name = self.model.split('.')
|
|
ct = ContentType.objects.get_by_natural_key(app_label, model_name.lower())
|
|
for line in log.stdout.splitlines():
|
|
line = line.strip()
|
|
try:
|
|
object_id, value = self.process(line)
|
|
except ValueError:
|
|
cls_name = self.__class__.__name__
|
|
raise ValueError("%s expected '<id> <value>' got '%s'" % (cls_name, line))
|
|
MonitorData.objects.create(monitor=name, object_id=object_id,
|
|
content_type=ct, value=value, created_at=self.current_date)
|
|
|
|
def execute(self, server, async=False):
|
|
log = super(ServiceMonitor, self).execute(server, async=async)
|
|
self.store(log)
|
|
return log
|