def testAverageLoad(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance1')
LoadInfo.RegisterInstanceIpAddress('test-instance1', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance1', 55)
LoadInfo.AddInstance('test-instance2')
LoadInfo.RegisterInstanceIpAddress('test-instance2', '5.6.7.8')
LoadInfo.UpdateLoadInfo('test-instance2', 11)
LoadInfo.AddInstance('test-instance3')
LoadInfo.RegisterInstanceIpAddress('test-instance3', '9.10.11.12')
LoadInfo.UpdateLoadInfo('test-instance3', 66)
self.assertEqual((3, 44), LoadInfo.GetAverageLoad())
def testMemcacheClear(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance')
LoadInfo.RegisterInstanceIpAddress('test-instance', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance', 55)
# Simulate loss of all data in Memcache.
memcache.flush_all()
LoadInfo.UpdateLoadInfo('test-instance', 38)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 38,
'force': False
}
}, LoadInfo.GetAll())
def testGetIdleInstanceIpAddress(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance1')
LoadInfo.RegisterInstanceIpAddress('test-instance1', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance1', 55)
LoadInfo.AddInstance('test-instance2')
LoadInfo.RegisterInstanceIpAddress('test-instance2', '5.6.7.8')
LoadInfo.UpdateLoadInfo('test-instance2', 11)
LoadInfo.AddInstance('test-instance3')
LoadInfo.RegisterInstanceIpAddress('test-instance3', '9.10.11.12')
LoadInfo.UpdateLoadInfo('test-instance3', 66)
LoadInfo.AddInstance('test-instance4')
LoadInfo.RegisterInstanceIpAddress('test-instance4', '13.14.15.16')
LoadInfo.UpdateLoadInfo('test-instance4', 22)
# IP address should be picked up from one of the 3 least loaded instances.
self.assertIn(LoadInfo.GetIdleInstanceIpAddress(),
('1.2.3.4', '5.6.7.8', '13.14.15.16'))
def testAverageLoadExcludingImmatureInstance(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance1')
LoadInfo.RegisterInstanceIpAddress('test-instance1', '1.2.3.4')
# test-instance1 hasn't yet reported load information.
LoadInfo.AddInstance('test-instance2')
LoadInfo.RegisterInstanceIpAddress('test-instance2', '5.6.7.8')
LoadInfo.UpdateLoadInfo('test-instance2', 33)
self.assertEqual((1, 33), LoadInfo.GetAverageLoad())
def testGetIdleInstanceExcludingImmatureInstance(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance1')
LoadInfo.RegisterInstanceIpAddress('test-instance1', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance1', 55)
LoadInfo.AddInstance('test-instance2')
LoadInfo.RegisterInstanceIpAddress('test-instance2', '5.6.7.8')
# test-instance2 hasn't yet reported load information.
self.assertEqual('1.2.3.4', LoadInfo.GetIdleInstanceIpAddress())
def testRemoveInstanceFromTwo(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance1')
LoadInfo.RegisterInstanceIpAddress('test-instance1', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance1', 55)
LoadInfo.AddInstance('test-instance2')
LoadInfo.RegisterInstanceIpAddress('test-instance2', '5.6.7.8')
LoadInfo.UpdateLoadInfo('test-instance2', 22)
LoadInfo.RemoveInstance('test-instance1')
self.assertEqual(
{
'test-instance2': {
'ip_address': '5.6.7.8',
'load': 22,
'force': False
}
}, LoadInfo.GetAll())
self.assertIsNone(memcache.get('test-instance1'))
self.assertIsNone(SingleInstance.GetByName('test-instance1'))
def testRemoveInstanceFromOne(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance')
LoadInfo.RegisterInstanceIpAddress('test-instance', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance', 55)
LoadInfo.RemoveInstance('test-instance')
self.assertEqual({}, LoadInfo.GetAll())
self.assertEqual([], memcache.get(LoadInfo.ALL_INSTANCES))
self.assertIsNone(memcache.get('test-instance'))
self.assertIsNone(SingleInstance.GetByName('test-instance'))
def testUpdateLoadInfo(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance')
LoadInfo.RegisterInstanceIpAddress('test-instance', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance', 55)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 55,
'force': False
}
}, LoadInfo.GetAll())
LoadInfo.UpdateLoadInfo('test-instance', 73)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 73,
'force': False
}
}, LoadInfo.GetAll())
def post(self):
"""Receives request from instance and updates load information."""
# TODO(user): Secure this URL by using Cloud Endpoints.
name = self.request.get('name')
load = self.request.get('load')
if not load:
load = 0
force = self.request.get('force')
force_set = None
if force:
if int(force):
force_set = True
else:
force_set = False
LoadInfo.UpdateLoadInfo(name, int(load), force_set)
self.response.headers['Content-Type'] = 'text/plain'
self.response.out.write('ok')
def testUpdateLoadInfoForce(self):
LoadInfo.InitializeTable()
LoadInfo.AddInstance('test-instance')
LoadInfo.RegisterInstanceIpAddress('test-instance', '1.2.3.4')
LoadInfo.UpdateLoadInfo('test-instance', 55)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 55,
'force': False
}
}, LoadInfo.GetAll())
LoadInfo.UpdateLoadInfo('test-instance', 92, True)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 92,
'force': True
}
}, LoadInfo.GetAll())
# This update is ignored since force flag is set in data and this is not
# force update.
LoadInfo.UpdateLoadInfo('test-instance', 15)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 92,
'force': True
}
}, LoadInfo.GetAll())
# Updated because of force_set flag.
LoadInfo.UpdateLoadInfo('test-instance', 8, True)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 8,
'force': True
}
}, LoadInfo.GetAll())
LoadInfo.UpdateLoadInfo('test-instance', 41, False)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 41,
'force': False
}
}, LoadInfo.GetAll())
LoadInfo.UpdateLoadInfo('test-instance', 28)
self.assertEqual(
{
'test-instance': {
'ip_address': '1.2.3.4',
'load': 28,
'force': False
}
}, LoadInfo.GetAll())