def test_explain_placement(self):
"""Test explain placement"""
app1 = scheduler.Application('foo.xxx#1',
100,
demand=[1, 1, 1],
affinity='foo.xxx')
alloc = (self.cell.partitions['_default'].allocation.get_sub_alloc(
't1').get_sub_alloc('t3').get_sub_alloc('a2'))
self.cell.add_app(alloc, app1)
df = reports.explain_placement(self.cell, app1, mode='full')
self.assertEqual(len(df), 7)
df = reports.explain_placement(self.cell, app1, mode='servers')
self.assertEqual(len(df), 4)
def placement(instance, mode):
"""Explain application placement"""
cell_master = make_readonly_master()
if instance not in cell_master.cell.apps:
cli.bad_exit('Instance not found.')
app = cell_master.cell.apps[instance]
if app.server:
cli.bad_exit('Instace already placed on %s' % app.server)
frame = reports.explain_placement(cell_master.cell, app, mode)
_print(frame, explain=True)
def _explain(inst_id):
"""Explain application placement"""
with lc.LogContext(_LOGGER, inst_id):
start = time.time()
ro_scheduler = get_readonly_scheduler()
_LOGGER.info('ro_scheduler was ready in %s secs', time.time() - start)
try:
instance = ro_scheduler.cell.apps[inst_id]
except KeyError:
raise exc.NotFoundError(inst_id)
if instance.server:
raise exc.FoundError('instance {} is already placed on {}'.format(
inst_id, instance.server))
return reports.explain_placement(ro_scheduler.cell, instance,
'servers')