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"""Tests for parallel client.py
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Authors:
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* Min RK
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"""
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#-------------------------------------------------------------------------------
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# Copyright (C) 2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# Imports
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#-------------------------------------------------------------------------------
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from __future__ import division
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import time
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from datetime import datetime
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from tempfile import mktemp
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import zmq
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from IPython import parallel
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from IPython.parallel.client import client as clientmod
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from IPython.parallel import error
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from IPython.parallel import AsyncResult, AsyncHubResult
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from IPython.parallel import LoadBalancedView, DirectView
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from clienttest import ClusterTestCase, segfault, wait, add_engines
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def setup():
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add_engines(4, total=True)
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class TestClient(ClusterTestCase):
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def test_ids(self):
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n = len(self.client.ids)
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self.add_engines(2)
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self.assertEqual(len(self.client.ids), n+2)
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def test_view_indexing(self):
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"""test index access for views"""
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self.minimum_engines(4)
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targets = self.client._build_targets('all')[-1]
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v = self.client[:]
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self.assertEqual(v.targets, targets)
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t = self.client.ids[2]
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v = self.client[t]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, t)
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t = self.client.ids[2:4]
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v = self.client[t]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, t)
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v = self.client[::2]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, targets[::2])
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v = self.client[1::3]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, targets[1::3])
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v = self.client[:-3]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, targets[:-3])
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v = self.client[-1]
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self.assertTrue(isinstance(v, DirectView))
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self.assertEqual(v.targets, targets[-1])
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self.assertRaises(TypeError, lambda : self.client[None])
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def test_lbview_targets(self):
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"""test load_balanced_view targets"""
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v = self.client.load_balanced_view()
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self.assertEqual(v.targets, None)
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v = self.client.load_balanced_view(-1)
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self.assertEqual(v.targets, [self.client.ids[-1]])
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v = self.client.load_balanced_view('all')
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self.assertEqual(v.targets, None)
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def test_dview_targets(self):
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"""test direct_view targets"""
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v = self.client.direct_view()
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self.assertEqual(v.targets, 'all')
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v = self.client.direct_view('all')
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self.assertEqual(v.targets, 'all')
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v = self.client.direct_view(-1)
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self.assertEqual(v.targets, self.client.ids[-1])
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def test_lazy_all_targets(self):
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"""test lazy evaluation of rc.direct_view('all')"""
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v = self.client.direct_view()
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self.assertEqual(v.targets, 'all')
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def double(x):
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return x*2
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seq = range(100)
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ref = [ double(x) for x in seq ]
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# add some engines, which should be used
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self.add_engines(1)
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n1 = len(self.client.ids)
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# simple apply
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r = v.apply_sync(lambda : 1)
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self.assertEqual(r, [1] * n1)
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# map goes through remotefunction
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r = v.map_sync(double, seq)
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self.assertEqual(r, ref)
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# add a couple more engines, and try again
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self.add_engines(2)
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n2 = len(self.client.ids)
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self.assertNotEqual(n2, n1)
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# apply
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r = v.apply_sync(lambda : 1)
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self.assertEqual(r, [1] * n2)
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# map
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r = v.map_sync(double, seq)
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self.assertEqual(r, ref)
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def test_targets(self):
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"""test various valid targets arguments"""
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build = self.client._build_targets
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ids = self.client.ids
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idents,targets = build(None)
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self.assertEqual(ids, targets)
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def test_clear(self):
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"""test clear behavior"""
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self.minimum_engines(2)
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v = self.client[:]
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v.block=True
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v.push(dict(a=5))
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v.pull('a')
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id0 = self.client.ids[-1]
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self.client.clear(targets=id0, block=True)
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a = self.client[:-1].get('a')
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self.assertRaisesRemote(NameError, self.client[id0].get, 'a')
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self.client.clear(block=True)
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for i in self.client.ids:
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self.assertRaisesRemote(NameError, self.client[i].get, 'a')
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def test_get_result(self):
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"""test getting results from the Hub."""
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c = clientmod.Client(profile='iptest')
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t = c.ids[-1]
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ar = c[t].apply_async(wait, 1)
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# give the monitor time to notice the message
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time.sleep(.25)
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ahr = self.client.get_result(ar.msg_ids[0])
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self.assertTrue(isinstance(ahr, AsyncHubResult))
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self.assertEqual(ahr.get(), ar.get())
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ar2 = self.client.get_result(ar.msg_ids[0])
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self.assertFalse(isinstance(ar2, AsyncHubResult))
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c.close()
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def test_get_execute_result(self):
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"""test getting execute results from the Hub."""
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c = clientmod.Client(profile='iptest')
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t = c.ids[-1]
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cell = '\n'.join([
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'import time',
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'time.sleep(0.25)',
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'5'
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])
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ar = c[t].execute("import time; time.sleep(1)", silent=False)
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# give the monitor time to notice the message
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time.sleep(.25)
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ahr = self.client.get_result(ar.msg_ids[0])
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self.assertTrue(isinstance(ahr, AsyncHubResult))
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self.assertEqual(ahr.get().pyout, ar.get().pyout)
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ar2 = self.client.get_result(ar.msg_ids[0])
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self.assertFalse(isinstance(ar2, AsyncHubResult))
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c.close()
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def test_ids_list(self):
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"""test client.ids"""
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ids = self.client.ids
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self.assertEqual(ids, self.client._ids)
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self.assertFalse(ids is self.client._ids)
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ids.remove(ids[-1])
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self.assertNotEqual(ids, self.client._ids)
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def test_queue_status(self):
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ids = self.client.ids
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id0 = ids[0]
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qs = self.client.queue_status(targets=id0)
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self.assertTrue(isinstance(qs, dict))
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self.assertEqual(sorted(qs.keys()), ['completed', 'queue', 'tasks'])
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allqs = self.client.queue_status()
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self.assertTrue(isinstance(allqs, dict))
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intkeys = list(allqs.keys())
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intkeys.remove('unassigned')
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self.assertEqual(sorted(intkeys), sorted(self.client.ids))
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unassigned = allqs.pop('unassigned')
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for eid,qs in allqs.items():
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self.assertTrue(isinstance(qs, dict))
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self.assertEqual(sorted(qs.keys()), ['completed', 'queue', 'tasks'])
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def test_shutdown(self):
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ids = self.client.ids
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id0 = ids[0]
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self.client.shutdown(id0, block=True)
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while id0 in self.client.ids:
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time.sleep(0.1)
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self.client.spin()
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self.assertRaises(IndexError, lambda : self.client[id0])
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def test_result_status(self):
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pass
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# to be written
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def test_db_query_dt(self):
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"""test db query by date"""
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hist = self.client.hub_history()
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middle = self.client.db_query({'msg_id' : hist[len(hist)//2]})[0]
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tic = middle['submitted']
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before = self.client.db_query({'submitted' : {'$lt' : tic}})
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after = self.client.db_query({'submitted' : {'$gte' : tic}})
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self.assertEqual(len(before)+len(after),len(hist))
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for b in before:
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self.assertTrue(b['submitted'] < tic)
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for a in after:
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self.assertTrue(a['submitted'] >= tic)
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same = self.client.db_query({'submitted' : tic})
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for s in same:
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self.assertTrue(s['submitted'] == tic)
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def test_db_query_keys(self):
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"""test extracting subset of record keys"""
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found = self.client.db_query({'msg_id': {'$ne' : ''}},keys=['submitted', 'completed'])
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for rec in found:
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self.assertEqual(set(rec.keys()), set(['msg_id', 'submitted', 'completed']))
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def test_db_query_default_keys(self):
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"""default db_query excludes buffers"""
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found = self.client.db_query({'msg_id': {'$ne' : ''}})
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for rec in found:
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keys = set(rec.keys())
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self.assertFalse('buffers' in keys, "'buffers' should not be in: %s" % keys)
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self.assertFalse('result_buffers' in keys, "'result_buffers' should not be in: %s" % keys)
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def test_db_query_msg_id(self):
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"""ensure msg_id is always in db queries"""
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found = self.client.db_query({'msg_id': {'$ne' : ''}},keys=['submitted', 'completed'])
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for rec in found:
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self.assertTrue('msg_id' in rec.keys())
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found = self.client.db_query({'msg_id': {'$ne' : ''}},keys=['submitted'])
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for rec in found:
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self.assertTrue('msg_id' in rec.keys())
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found = self.client.db_query({'msg_id': {'$ne' : ''}},keys=['msg_id'])
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for rec in found:
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self.assertTrue('msg_id' in rec.keys())
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def test_db_query_get_result(self):
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"""pop in db_query shouldn't pop from result itself"""
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self.client[:].apply_sync(lambda : 1)
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found = self.client.db_query({'msg_id': {'$ne' : ''}})
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rc2 = clientmod.Client(profile='iptest')
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# If this bug is not fixed, this call will hang:
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ar = rc2.get_result(self.client.history[-1])
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ar.wait(2)
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self.assertTrue(ar.ready())
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ar.get()
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rc2.close()
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def test_db_query_in(self):
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"""test db query with '$in','$nin' operators"""
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hist = self.client.hub_history()
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even = hist[::2]
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odd = hist[1::2]
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recs = self.client.db_query({ 'msg_id' : {'$in' : even}})
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found = [ r['msg_id'] for r in recs ]
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self.assertEqual(set(even), set(found))
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recs = self.client.db_query({ 'msg_id' : {'$nin' : even}})
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found = [ r['msg_id'] for r in recs ]
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self.assertEqual(set(odd), set(found))
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def test_hub_history(self):
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hist = self.client.hub_history()
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recs = self.client.db_query({ 'msg_id' : {"$ne":''}})
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recdict = {}
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for rec in recs:
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recdict[rec['msg_id']] = rec
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latest = datetime(1984,1,1)
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for msg_id in hist:
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rec = recdict[msg_id]
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newt = rec['submitted']
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self.assertTrue(newt >= latest)
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latest = newt
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ar = self.client[-1].apply_async(lambda : 1)
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ar.get()
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time.sleep(0.25)
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self.assertEqual(self.client.hub_history()[-1:],ar.msg_ids)
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def _wait_for_idle(self):
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"""wait for an engine to become idle, according to the Hub"""
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rc = self.client
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# step 1. wait for all requests to be noticed
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# timeout 5s, polling every 100ms
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msg_ids = set(rc.history)
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hub_hist = rc.hub_history()
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for i in range(50):
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if msg_ids.difference(hub_hist):
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time.sleep(0.1)
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hub_hist = rc.hub_history()
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else:
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break
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self.assertEqual(len(msg_ids.difference(hub_hist)), 0)
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# step 2. wait for all requests to be done
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# timeout 5s, polling every 100ms
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qs = rc.queue_status()
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for i in range(50):
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if qs['unassigned'] or any(qs[eid]['tasks'] for eid in rc.ids):
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time.sleep(0.1)
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qs = rc.queue_status()
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else:
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break
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# ensure Hub up to date:
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self.assertEqual(qs['unassigned'], 0)
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for eid in rc.ids:
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self.assertEqual(qs[eid]['tasks'], 0)
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def test_resubmit(self):
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def f():
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import random
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return random.random()
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v = self.client.load_balanced_view()
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ar = v.apply_async(f)
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r1 = ar.get(1)
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# give the Hub a chance to notice:
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self._wait_for_idle()
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ahr = self.client.resubmit(ar.msg_ids)
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r2 = ahr.get(1)
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self.assertFalse(r1 == r2)
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def test_resubmit_chain(self):
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"""resubmit resubmitted tasks"""
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v = self.client.load_balanced_view()
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ar = v.apply_async(lambda x: x, 'x'*1024)
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ar.get()
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self._wait_for_idle()
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ars = [ar]
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for i in range(10):
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ar = ars[-1]
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ar2 = self.client.resubmit(ar.msg_ids)
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[ ar.get() for ar in ars ]
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def test_resubmit_header(self):
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"""resubmit shouldn't clobber the whole header"""
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def f():
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import random
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return random.random()
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v = self.client.load_balanced_view()
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v.retries = 1
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ar = v.apply_async(f)
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r1 = ar.get(1)
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# give the Hub a chance to notice:
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self._wait_for_idle()
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ahr = self.client.resubmit(ar.msg_ids)
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ahr.get(1)
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time.sleep(0.5)
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records = self.client.db_query({'msg_id': {'$in': ar.msg_ids + ahr.msg_ids}}, keys='header')
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h1,h2 = [ r['header'] for r in records ]
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for key in set(h1.keys()).union(set(h2.keys())):
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if key in ('msg_id', 'date'):
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self.assertNotEqual(h1[key], h2[key])
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else:
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self.assertEqual(h1[key], h2[key])
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def test_resubmit_aborted(self):
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def f():
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import random
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return random.random()
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v = self.client.load_balanced_view()
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# restrict to one engine, so we can put a sleep
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# ahead of the task, so it will get aborted
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eid = self.client.ids[-1]
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v.targets = [eid]
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sleep = v.apply_async(time.sleep, 0.5)
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ar = v.apply_async(f)
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ar.abort()
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self.assertRaises(error.TaskAborted, ar.get)
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# Give the Hub a chance to get up to date:
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self._wait_for_idle()
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ahr = self.client.resubmit(ar.msg_ids)
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r2 = ahr.get(1)
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def test_resubmit_inflight(self):
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"""resubmit of inflight task"""
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v = self.client.load_balanced_view()
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ar = v.apply_async(time.sleep,1)
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# give the message a chance to arrive
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time.sleep(0.2)
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ahr = self.client.resubmit(ar.msg_ids)
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ar.get(2)
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ahr.get(2)
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|
|
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def test_resubmit_badkey(self):
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|
"""ensure KeyError on resubmit of nonexistant task"""
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self.assertRaisesRemote(KeyError, self.client.resubmit, ['invalid'])
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|
|
|
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def test_purge_hub_results(self):
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# ensure there are some tasks
|
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|
for i in range(5):
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self.client[:].apply_sync(lambda : 1)
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|
# Wait for the Hub to realise the result is done:
|
|
|
# This prevents a race condition, where we
|
|
|
# might purge a result the Hub still thinks is pending.
|
|
|
self._wait_for_idle()
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|
rc2 = clientmod.Client(profile='iptest')
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hist = self.client.hub_history()
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|
ahr = rc2.get_result([hist[-1]])
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ahr.wait(10)
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self.client.purge_hub_results(hist[-1])
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newhist = self.client.hub_history()
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self.assertEqual(len(newhist)+1,len(hist))
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|
rc2.spin()
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|
rc2.close()
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|
|
|
|
|
def test_purge_local_results(self):
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|
# ensure there are some tasks
|
|
|
res = []
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|
for i in range(5):
|
|
|
res.append(self.client[:].apply_async(lambda : 1))
|
|
|
self._wait_for_idle()
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|
|
self.client.wait(10) # wait for the results to come back
|
|
|
before = len(self.client.results)
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|
|
self.assertEqual(len(self.client.metadata),before)
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|
|
self.client.purge_local_results(res[-1])
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|
|
self.assertEqual(len(self.client.results),before-len(res[-1]), msg="Not removed from results")
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|
|
self.assertEqual(len(self.client.metadata),before-len(res[-1]), msg="Not removed from metadata")
|
|
|
|
|
|
def test_purge_local_results_outstanding(self):
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|
|
v = self.client[-1]
|
|
|
ar = v.apply_async(lambda : 1)
|
|
|
msg_id = ar.msg_ids[0]
|
|
|
ar.get()
|
|
|
self._wait_for_idle()
|
|
|
ar2 = v.apply_async(time.sleep, 1)
|
|
|
self.assertIn(msg_id, self.client.results)
|
|
|
self.assertIn(msg_id, self.client.metadata)
|
|
|
self.client.purge_local_results(ar)
|
|
|
self.assertNotIn(msg_id, self.client.results)
|
|
|
self.assertNotIn(msg_id, self.client.metadata)
|
|
|
with self.assertRaises(RuntimeError):
|
|
|
self.client.purge_local_results(ar2)
|
|
|
ar2.get()
|
|
|
self.client.purge_local_results(ar2)
|
|
|
|
|
|
def test_purge_all_local_results_outstanding(self):
|
|
|
v = self.client[-1]
|
|
|
ar = v.apply_async(time.sleep, 1)
|
|
|
with self.assertRaises(RuntimeError):
|
|
|
self.client.purge_local_results('all')
|
|
|
ar.get()
|
|
|
self.client.purge_local_results('all')
|
|
|
|
|
|
def test_purge_all_hub_results(self):
|
|
|
self.client.purge_hub_results('all')
|
|
|
hist = self.client.hub_history()
|
|
|
self.assertEqual(len(hist), 0)
|
|
|
|
|
|
def test_purge_all_local_results(self):
|
|
|
self.client.purge_local_results('all')
|
|
|
self.assertEqual(len(self.client.results), 0, msg="Results not empty")
|
|
|
self.assertEqual(len(self.client.metadata), 0, msg="metadata not empty")
|
|
|
|
|
|
def test_purge_all_results(self):
|
|
|
# ensure there are some tasks
|
|
|
for i in range(5):
|
|
|
self.client[:].apply_sync(lambda : 1)
|
|
|
self.client.wait(10)
|
|
|
self._wait_for_idle()
|
|
|
self.client.purge_results('all')
|
|
|
self.assertEqual(len(self.client.results), 0, msg="Results not empty")
|
|
|
self.assertEqual(len(self.client.metadata), 0, msg="metadata not empty")
|
|
|
hist = self.client.hub_history()
|
|
|
self.assertEqual(len(hist), 0, msg="hub history not empty")
|
|
|
|
|
|
def test_purge_everything(self):
|
|
|
# ensure there are some tasks
|
|
|
for i in range(5):
|
|
|
self.client[:].apply_sync(lambda : 1)
|
|
|
self.client.wait(10)
|
|
|
self._wait_for_idle()
|
|
|
self.client.purge_everything()
|
|
|
# The client results
|
|
|
self.assertEqual(len(self.client.results), 0, msg="Results not empty")
|
|
|
self.assertEqual(len(self.client.metadata), 0, msg="metadata not empty")
|
|
|
# The client "bookkeeping"
|
|
|
self.assertEqual(len(self.client.session.digest_history), 0, msg="session digest not empty")
|
|
|
self.assertEqual(len(self.client.history), 0, msg="client history not empty")
|
|
|
# the hub results
|
|
|
hist = self.client.hub_history()
|
|
|
self.assertEqual(len(hist), 0, msg="hub history not empty")
|
|
|
|
|
|
|
|
|
def test_spin_thread(self):
|
|
|
self.client.spin_thread(0.01)
|
|
|
ar = self.client[-1].apply_async(lambda : 1)
|
|
|
time.sleep(0.1)
|
|
|
self.assertTrue(ar.wall_time < 0.1,
|
|
|
"spin should have kept wall_time < 0.1, but got %f" % ar.wall_time
|
|
|
)
|
|
|
|
|
|
def test_stop_spin_thread(self):
|
|
|
self.client.spin_thread(0.01)
|
|
|
self.client.stop_spin_thread()
|
|
|
ar = self.client[-1].apply_async(lambda : 1)
|
|
|
time.sleep(0.15)
|
|
|
self.assertTrue(ar.wall_time > 0.1,
|
|
|
"Shouldn't be spinning, but got wall_time=%f" % ar.wall_time
|
|
|
)
|
|
|
|
|
|
def test_activate(self):
|
|
|
ip = get_ipython()
|
|
|
magics = ip.magics_manager.magics
|
|
|
self.assertTrue('px' in magics['line'])
|
|
|
self.assertTrue('px' in magics['cell'])
|
|
|
v0 = self.client.activate(-1, '0')
|
|
|
self.assertTrue('px0' in magics['line'])
|
|
|
self.assertTrue('px0' in magics['cell'])
|
|
|
self.assertEqual(v0.targets, self.client.ids[-1])
|
|
|
v0 = self.client.activate('all', 'all')
|
|
|
self.assertTrue('pxall' in magics['line'])
|
|
|
self.assertTrue('pxall' in magics['cell'])
|
|
|
self.assertEqual(v0.targets, 'all')
|
|
|
|
