matthias/mayan-edms
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add state field to node class

Browse Source
This commit is contained in:
Roberto Rosario
2012-08-02 21:27:42 -04:00
parent 5cd81ddebb
commit a549c0e6df
6 changed files with 73 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
apps/clustering/models.py
View File

@@ -13,7 +13,7 @@ from django.utils.translation import ugettext, ugettext_lazy as _
from common.models import Singleton
from .literals import (DEFAULT_NODE_HEARTBEAT_INTERVAL, DEFAULT_NODE_HEARTBEAT_TIMEOUT,
DEFAULT_DEAD_NODE_REMOVAL_INTERVAL)
DEFAULT_DEAD_NODE_REMOVAL_INTERVAL, NODE_STATE_HEALTHY, NODE_STATE_CHOICES, NODE_STATE_DEAD)
class NodeManager(models.Manager):
@@ -31,7 +31,11 @@ class Node(models.Model):
cpuload = models.FloatField(blank=True, default=0.0, verbose_name=_(u'cpu load'))
heartbeat = models.DateTimeField(blank=True, default=datetime.datetime.now(), verbose_name=_(u'last heartbeat check'))
memory_usage = models.FloatField(blank=True, default=0.0, verbose_name=_(u'memory usage'))
state = models.CharField(max_length=4,
choices=NODE_STATE_CHOICES,
default=NODE_STATE_HEALTHY,
verbose_name=_(u'state'))
objects = NodeManager()
@classmethod
@@ -50,7 +54,10 @@ class Node(models.Model):
info = Node.platform_info()
self.cpuload = info['cpuload']
self.memory_usage = info['memory_usage']
def if_healthy(self):
return self.health == NODE_STATE_HEALTHY
def save(self, *args, **kwargs):
self.heartbeat = datetime.datetime.now()
return super(Node, self).save(*args, **kwargs)
@@ -62,10 +69,10 @@ class Node(models.Model):
class ClusteringConfigManager(models.Manager):
def dead_nodes(self):
return Node.objects.filter(heartbeat__lt=datetime.datetime.now() - datetime.timedelta(seconds=self.model.get().node_heartbeat_timeout))
return self.model.objects.filter(heartbeat__lt=datetime.datetime.now() - datetime.timedelta(seconds=self.model.get().node_heartbeat_timeout))
def delete_dead_nodes(self):
self.dead_nodes().delete()
def check_dead_nodes(self):
self.dead_nodes().update(healty=NODE_STATE_DEAD)
def zombiest_node(self):
try: