def test_default_client_with_retries(self):
self.flags(glance_num_retries=1)
ctxt = context.RequestContext('fake', 'fake')
info = {
'num_calls': 0,
'host0': 'host1',
'port0': 9292,
'use_ssl0': False,
'host1': 'host2',
'port1': 9293,
'use_ssl1': True
}
# Leave the list in a known-order
def _fake_shuffle(servers):
pass
def _fake_create_glance_client(context, host, port, use_ssl, version):
attempt = info['num_calls']
self.assertEqual(host, info['host%s' % attempt])
self.assertEqual(port, info['port%s' % attempt])
self.assertEqual(use_ssl, info['use_ssl%s' % attempt])
return _create_failing_glance_client(info)
self.stubs.Set(random, 'shuffle', _fake_shuffle)
self.stubs.Set(glance, '_create_glance_client',
_fake_create_glance_client)
client = glance.GlanceClientWrapper()
client2 = glance.GlanceClientWrapper()
client.call(ctxt, 1, 'get', 'meow')
self.assertEqual(info['num_calls'], 2)
def _fake_shuffle2(servers):
# fake shuffle in a known manner
servers.append(servers.pop(0))
self.stubs.Set(random, 'shuffle', _fake_shuffle2)
info = {
'num_calls': 0,
'host0': 'host2',
'port0': 9293,
'use_ssl0': True,
'host1': 'host3',
'port1': 9294,
'use_ssl1': False
}
client2.call(ctxt, 1, 'get', 'meow')
self.assertEqual(info['num_calls'], 2)
def test_default_client_with_retries(self, create_client_mock, sleep_mock,
shuffle_mock):
api_servers = ['host1:9292', 'https://host2:9293', 'http://host3:9294']
client_mock = mock.MagicMock()
images_mock = mock.MagicMock()
images_mock.get.side_effect = [
glanceclient.exc.ServiceUnavailable, None
]
type(client_mock).images = mock.PropertyMock(return_value=images_mock)
create_client_mock.return_value = client_mock
self.flags(num_retries=1, group='glance')
self.flags(api_servers=api_servers, group='glance')
ctx = context.RequestContext('fake', 'fake')
# And here we're testing that if num_retries is not 0, then we attempt
# to retry the same connection action against the next client.
client = glance.GlanceClientWrapper()
client.call(ctx, 1, 'get', 'meow')
create_client_mock.assert_has_calls([
mock.call(ctx, 'host1', 9292, False, 1),
mock.call(ctx, 'host2', 9293, True, 1),
])
sleep_mock.assert_called_once_with(1)
def test_default_client_without_retries(self, create_client_mock,
sleep_mock, shuffle_mock):
api_servers = ['host1:9292', 'https://host2:9293', 'http://host3:9294']
client_mock = mock.MagicMock()
images_mock = mock.MagicMock()
images_mock.get.side_effect = glanceclient.exc.ServiceUnavailable
type(client_mock).images = mock.PropertyMock(return_value=images_mock)
create_client_mock.return_value = client_mock
shuffle_mock.return_value = api_servers
self.flags(num_retries=0, group='glance')
self.flags(api_servers=api_servers, group='glance')
# Here we are testing the behaviour that calling client.call() twice
# when there are no retries will cycle through the api_servers and not
# sleep (which would be an indication of a retry)
ctx = context.RequestContext('fake', 'fake')
client = glance.GlanceClientWrapper()
self.assertRaises(exception.GlanceConnectionFailed, client.call, ctx,
1, 'get', 'meow')
self.assertFalse(sleep_mock.called)
self.assertRaises(exception.GlanceConnectionFailed, client.call, ctx,
1, 'get', 'meow')
self.assertFalse(sleep_mock.called)
create_client_mock.assert_has_calls([
mock.call(ctx, 'host1', 9292, False, 1),
mock.call(ctx, 'host2', 9293, True, 1),
])
def test_static_client_with_retries(self):
self.flags(glance_num_retries=1)
ctxt = context.RequestContext('fake', 'fake')
fake_host = 'host4'
fake_port = 9295
fake_use_ssl = False
info = {'num_calls': 0}
def _fake_create_glance_client(context, host, port, use_ssl, version):
self.assertEqual(host, fake_host)
self.assertEqual(port, fake_port)
self.assertEqual(use_ssl, fake_use_ssl)
return _create_failing_glance_client(info)
self.stubs.Set(glance, '_create_glance_client',
_fake_create_glance_client)
client = glance.GlanceClientWrapper(context=ctxt,
host=fake_host,
port=fake_port,
use_ssl=fake_use_ssl)
client.call(ctxt, 1, 'get', 'meow')
self.assertEqual(info['num_calls'], 2)
def _create_image_service(self, client):
def _fake_create_glance_client(context, host, port):
return client
self.stubs.Set(glance, '_create_glance_client',
_fake_create_glance_client)
client_wrapper = glance.GlanceClientWrapper('fake', 'fake_host', 9292)
return glance.GlanceImageService(client=client_wrapper)
def test_default_client_without_retries(self):
self.flags(glance_num_retries=0)
ctxt = context.RequestContext('fake', 'fake')
info = {'num_calls': 0,
'host': 'host1',
'port': 9292,
'use_ssl': False}
# Leave the list in a known-order
def _fake_shuffle(servers):
pass
def _fake_create_glance_client(context, host, port, use_ssl, version):
self.assertEqual(host, info['host'])
self.assertEqual(port, info['port'])
self.assertEqual(use_ssl, info['use_ssl'])
return _create_failing_glance_client(info)
self.stubs.Set(random, 'shuffle', _fake_shuffle)
self.stubs.Set(glance, '_create_glance_client',
_fake_create_glance_client)
client = glance.GlanceClientWrapper()
client2 = glance.GlanceClientWrapper()
self.assertRaises(exception.GlanceConnectionFailed,
client.call, ctxt, 1, 'get', 'meow')
self.assertEqual(info['num_calls'], 1)
info = {'num_calls': 0,
'host': 'host2',
'port': 9293,
'use_ssl': True}
def _fake_shuffle2(servers):
# fake shuffle in a known manner
servers.append(servers.pop(0))
self.stubs.Set(random, 'shuffle', _fake_shuffle2)
self.assertRaises(exception.GlanceConnectionFailed,
client2.call, ctxt, 1, 'get', 'meow')
self.assertEqual(info['num_calls'], 1)
def test_static_client_without_retries(self, create_client_mock,
sleep_mock):
client_mock = mock.MagicMock()
images_mock = mock.MagicMock()
images_mock.get.side_effect = glanceclient.exc.ServiceUnavailable
type(client_mock).images = mock.PropertyMock(return_value=images_mock)
create_client_mock.return_value = client_mock
self.flags(num_retries=0, group='glance')
ctx = context.RequestContext('fake', 'fake')
host = 'host4'
port = 9295
use_ssl = False
client = glance.GlanceClientWrapper(context=ctx, host=host, port=port,
use_ssl=use_ssl)
create_client_mock.assert_called_once_with(ctx, host, port, use_ssl, 1)
self.assertRaises(exception.GlanceConnectionFailed,
client.call, ctx, 1, 'get', 'meow')
self.assertFalse(sleep_mock.called)
def test_static_client_with_retries(self, create_client_mock, sleep_mock):
self.flags(num_retries=1, group='glance')
client_mock = mock.MagicMock()
images_mock = mock.MagicMock()
images_mock.get.side_effect = [
glanceclient.exc.ServiceUnavailable, None
]
type(client_mock).images = mock.PropertyMock(return_value=images_mock)
create_client_mock.return_value = client_mock
ctx = context.RequestContext('fake', 'fake')
host = 'host4'
port = 9295
use_ssl = False
client = glance.GlanceClientWrapper(context=ctx,
host=host,
port=port,
use_ssl=use_ssl)
client.call(ctx, 1, 'get', 'meow')
sleep_mock.assert_called_once_with(1)
def test_static_client_without_retries(self):
self.flags(glance_num_retries=0)
ctxt = context.RequestContext('fake', 'fake')
fake_host = 'host4'
fake_port = 9295
info = {'num_calls': 0}
def _fake_create_glance_client(context, host, port):
self.assertEqual(host, fake_host)
self.assertEqual(port, fake_port)
return _create_failing_glance_client(info)
self.stubs.Set(glance, '_create_glance_client',
_fake_create_glance_client)
client = glance.GlanceClientWrapper(context=ctxt,
host=fake_host,
port=fake_port)
self.assertRaises(exception.GlanceConnectionFailed, client.call, ctxt,
'get', 'meow')
self.assertEqual(info['num_calls'], 1)
def sync_image(self, context, cascaded_url, cascading_image):
cascaded_glance_url = cascaded_url
_host, _port = get_host_port(cascaded_glance_url)
_cascaded_client = glance.GlanceClientWrapper(context=context,
host=_host,
port=_port,
version=2)
image_meta = get_adding_image_properties(cascading_image)
cascaded_image = _cascaded_client.call(context, 2, 'create',
**image_meta)
image_id = cascading_image.id
cascaded_id = cascaded_image.id
candidate_path = get_candidate_path(cascading_image)
LOG.debug("the candidate path is %s." % (candidate_path))
# copy image
try:
image_loc = self._copy_data(image_id, cascaded_id, candidate_path)
except Exception as e:
LOG.exception(_("copy image failed, reason=%s") % e)
raise
else:
if not image_loc:
LOG.exception(_("copy image Exception, no cascaded_loc"))
try:
# patch loc to the cascaded image
csd_locs = [{'url': image_loc, 'metadata': {}}]
_cascaded_client.call(context,
2,
'update',
cascaded_id,
remove_props=None,
locations=csd_locs)
except Exception as e:
LOG.exception(
_("patch loc to cascaded image Exception, reason: %s" % e))
raise
try:
# patch glance-loc to cascading image
csg_locs = cascading_image.locations
glance_loc = '%s/v2/images/%s' % (cascaded_glance_url, cascaded_id)
csg_locs.append({
'url': glance_loc,
'metadata': {
'image_id': str(cascaded_id),
'action': 'upload'
}
})
self._client.call(context,
2,
'update',
image_id,
remove_props=None,
locations=csg_locs)
except Exception as e:
LOG.exception(
_("patch loc to cascading image Exception, reason: %s" % e))
raise
return cascaded_id
def __init__(self, cascading_client=None):
self._client = cascading_client or glance.GlanceClientWrapper()
