332 lines
11 KiB
Python
332 lines
11 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2010 Citrix Systems, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Stubouts, mocks and fixtures for the test suite"""
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import eventlet
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import json
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from nova.virt import xenapi_conn
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from nova.virt.xenapi import fake
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from nova.virt.xenapi import volume_utils
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from nova.virt.xenapi import vm_utils
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from nova.virt.xenapi import vmops
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from nova import utils
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def stubout_instance_snapshot(stubs):
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@classmethod
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def fake_fetch_image(cls, session, instance_id, image, user, project,
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type):
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from nova.virt.xenapi.fake import create_vdi
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name_label = "instance-%s" % instance_id
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#TODO: create fake SR record
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sr_ref = "fakesr"
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vdi_ref = create_vdi(name_label=name_label, read_only=False,
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sr_ref=sr_ref, sharable=False)
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vdi_rec = session.get_xenapi().VDI.get_record(vdi_ref)
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vdi_uuid = vdi_rec['uuid']
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return [dict(vdi_type='os', vdi_uuid=vdi_uuid)]
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stubs.Set(vm_utils.VMHelper, 'fetch_image', fake_fetch_image)
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def fake_parse_xmlrpc_value(val):
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return val
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stubs.Set(xenapi_conn, '_parse_xmlrpc_value', fake_parse_xmlrpc_value)
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def fake_wait_for_vhd_coalesce(session, instance_id, sr_ref, vdi_ref,
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original_parent_uuid):
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#TODO(sirp): Should we actually fake out the data here
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return "fakeparent"
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stubs.Set(vm_utils, 'wait_for_vhd_coalesce', fake_wait_for_vhd_coalesce)
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def stubout_session(stubs, cls):
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"""Stubs out two methods from XenAPISession"""
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def fake_import(self):
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"""Stubs out get_imported_xenapi of XenAPISession"""
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fake_module = 'nova.virt.xenapi.fake'
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from_list = ['fake']
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return __import__(fake_module, globals(), locals(), from_list, -1)
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stubs.Set(xenapi_conn.XenAPISession, '_create_session',
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lambda s, url: cls(url))
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stubs.Set(xenapi_conn.XenAPISession, 'get_imported_xenapi',
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fake_import)
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def stub_out_get_target(stubs):
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"""Stubs out _get_target in volume_utils"""
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def fake_get_target(volume_id):
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return (None, None)
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stubs.Set(volume_utils, '_get_target', fake_get_target)
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def stubout_get_this_vm_uuid(stubs):
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def f():
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vms = [rec['uuid'] for ref, rec
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in fake.get_all_records('VM').iteritems()
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if rec['is_control_domain']]
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return vms[0]
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stubs.Set(vm_utils, 'get_this_vm_uuid', f)
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def stubout_stream_disk(stubs):
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def f(_1, _2, _3, _4):
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pass
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stubs.Set(vm_utils, '_stream_disk', f)
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def stubout_is_vdi_pv(stubs):
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def f(_1):
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return False
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stubs.Set(vm_utils, '_is_vdi_pv', f)
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def stubout_determine_is_pv_objectstore(stubs):
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"""Assumes VMs never have PV kernels"""
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@classmethod
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def f(cls, *args):
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return False
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stubs.Set(vm_utils.VMHelper, '_determine_is_pv_objectstore', f)
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def stubout_lookup_image(stubs):
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"""Simulates a failure in lookup image."""
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def f(_1, _2, _3, _4):
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raise Exception("Test Exception raised by fake lookup_image")
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stubs.Set(vm_utils, 'lookup_image', f)
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def stubout_fetch_image_glance_disk(stubs):
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"""Simulates a failure in fetch image_glance_disk."""
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@classmethod
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def f(cls, *args):
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raise fake.Failure("Test Exception raised by " +
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"fake fetch_image_glance_disk")
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stubs.Set(vm_utils.VMHelper, '_fetch_image_glance_disk', f)
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def stubout_create_vm(stubs):
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"""Simulates a failure in create_vm."""
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@classmethod
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def f(cls, *args):
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raise fake.Failure("Test Exception raised by " +
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"fake create_vm")
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stubs.Set(vm_utils.VMHelper, 'create_vm', f)
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def stubout_loopingcall_start(stubs):
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def fake_start(self, interval, now=True):
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self.f(*self.args, **self.kw)
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stubs.Set(utils.LoopingCall, 'start', fake_start)
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def stubout_loopingcall_delay(stubs):
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def fake_start(self, interval, now=True):
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self._running = True
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eventlet.sleep(1)
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self.f(*self.args, **self.kw)
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# This would fail before parallel xenapi calls were fixed
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assert self._running == False
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stubs.Set(utils.LoopingCall, 'start', fake_start)
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class FakeSessionForVMTests(fake.SessionBase):
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""" Stubs out a XenAPISession for VM tests """
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def __init__(self, uri):
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super(FakeSessionForVMTests, self).__init__(uri)
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def host_call_plugin(self, _1, _2, plugin, method, _5):
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# If the call is for 'copy_kernel_vdi' return None.
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if method == 'copy_kernel_vdi':
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return
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sr_ref = fake.get_all('SR')[0]
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vdi_ref = fake.create_vdi('', False, sr_ref, False)
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vdi_rec = fake.get_record('VDI', vdi_ref)
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if plugin == "glance" and method == "download_vhd":
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ret_str = json.dumps([dict(vdi_type='os',
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vdi_uuid=vdi_rec['uuid'])])
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else:
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ret_str = vdi_rec['uuid']
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return '<string>%s</string>' % ret_str
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def host_call_plugin_swap(self, _1, _2, plugin, method, _5):
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sr_ref = fake.get_all('SR')[0]
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vdi_ref = fake.create_vdi('', False, sr_ref, False)
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vdi_rec = fake.get_record('VDI', vdi_ref)
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if plugin == "glance" and method == "download_vhd":
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swap_vdi_ref = fake.create_vdi('', False, sr_ref, False)
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swap_vdi_rec = fake.get_record('VDI', swap_vdi_ref)
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ret_str = json.dumps(
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[dict(vdi_type='os', vdi_uuid=vdi_rec['uuid']),
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dict(vdi_type='swap', vdi_uuid=swap_vdi_rec['uuid'])])
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else:
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ret_str = vdi_rec['uuid']
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return '<string>%s</string>' % ret_str
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def VM_start(self, _1, ref, _2, _3):
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vm = fake.get_record('VM', ref)
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if vm['power_state'] != 'Halted':
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raise fake.Failure(['VM_BAD_POWER_STATE', ref, 'Halted',
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vm['power_state']])
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vm['power_state'] = 'Running'
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vm['is_a_template'] = False
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vm['is_control_domain'] = False
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def VM_snapshot(self, session_ref, vm_ref, label):
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status = "Running"
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template_vm_ref = fake.create_vm(label, status, is_a_template=True,
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is_control_domain=False)
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sr_ref = "fakesr"
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template_vdi_ref = fake.create_vdi(label, read_only=True,
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sr_ref=sr_ref, sharable=False)
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template_vbd_ref = fake.create_vbd(template_vm_ref, template_vdi_ref)
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return template_vm_ref
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def VDI_destroy(self, session_ref, vdi_ref):
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fake.destroy_vdi(vdi_ref)
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def VM_destroy(self, session_ref, vm_ref):
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fake.destroy_vm(vm_ref)
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def SR_scan(self, session_ref, sr_ref):
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pass
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def VDI_set_name_label(self, session_ref, vdi_ref, name_label):
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pass
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def stub_out_vm_methods(stubs):
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def fake_shutdown(self, inst, vm, method="clean"):
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pass
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def fake_acquire_bootlock(self, vm):
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pass
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def fake_release_bootlock(self, vm):
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pass
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def fake_spawn_rescue(self, inst):
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inst._rescue = False
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stubs.Set(vmops.VMOps, "_shutdown", fake_shutdown)
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stubs.Set(vmops.VMOps, "_acquire_bootlock", fake_acquire_bootlock)
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stubs.Set(vmops.VMOps, "_release_bootlock", fake_release_bootlock)
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stubs.Set(vmops.VMOps, "spawn_rescue", fake_spawn_rescue)
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class FakeSessionForVolumeTests(fake.SessionBase):
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""" Stubs out a XenAPISession for Volume tests """
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def __init__(self, uri):
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super(FakeSessionForVolumeTests, self).__init__(uri)
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def VDI_introduce(self, _1, uuid, _2, _3, _4, _5,
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_6, _7, _8, _9, _10, _11):
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valid_vdi = False
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refs = fake.get_all('VDI')
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for ref in refs:
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rec = fake.get_record('VDI', ref)
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if rec['uuid'] == uuid:
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valid_vdi = True
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if not valid_vdi:
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raise fake.Failure([['INVALID_VDI', 'session', self._session]])
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class FakeSessionForVolumeFailedTests(FakeSessionForVolumeTests):
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""" Stubs out a XenAPISession for Volume tests: it injects failures """
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def __init__(self, uri):
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super(FakeSessionForVolumeFailedTests, self).__init__(uri)
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def VDI_introduce(self, _1, uuid, _2, _3, _4, _5,
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_6, _7, _8, _9, _10, _11):
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# This is for testing failure
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raise fake.Failure([['INVALID_VDI', 'session', self._session]])
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def PBD_unplug(self, _1, ref):
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rec = fake.get_record('PBD', ref)
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rec['currently-attached'] = False
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def SR_forget(self, _1, ref):
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pass
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class FakeSessionForMigrationTests(fake.SessionBase):
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"""Stubs out a XenAPISession for Migration tests"""
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def __init__(self, uri):
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super(FakeSessionForMigrationTests, self).__init__(uri)
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def VDI_get_by_uuid(self, *args):
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return 'hurr'
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def VDI_resize_online(self, *args):
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pass
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def VM_start(self, _1, ref, _2, _3):
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vm = fake.get_record('VM', ref)
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if vm['power_state'] != 'Halted':
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raise fake.Failure(['VM_BAD_POWER_STATE', ref, 'Halted',
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vm['power_state']])
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vm['power_state'] = 'Running'
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vm['is_a_template'] = False
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vm['is_control_domain'] = False
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def stub_out_migration_methods(stubs):
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def fake_get_snapshot(self, instance):
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return 'vm_ref', dict(image='foo', snap='bar')
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@classmethod
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def fake_get_vdi(cls, session, vm_ref):
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vdi_ref = fake.create_vdi(name_label='derp', read_only=False,
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sr_ref='herp', sharable=False)
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vdi_rec = session.get_xenapi().VDI.get_record(vdi_ref)
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return vdi_ref, {'uuid': vdi_rec['uuid'], }
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def fake_shutdown(self, inst, vm, hard=True):
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pass
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@classmethod
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def fake_sr(cls, session, *args):
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pass
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@classmethod
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def fake_get_sr_path(cls, *args):
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return "fake"
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def fake_destroy(*args, **kwargs):
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pass
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def fake_reset_network(*args, **kwargs):
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pass
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stubs.Set(vmops.VMOps, '_destroy', fake_destroy)
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stubs.Set(vm_utils.VMHelper, 'scan_default_sr', fake_sr)
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stubs.Set(vm_utils.VMHelper, 'scan_sr', fake_sr)
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stubs.Set(vmops.VMOps, '_get_snapshot', fake_get_snapshot)
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stubs.Set(vm_utils.VMHelper, 'get_vdi_for_vm_safely', fake_get_vdi)
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stubs.Set(xenapi_conn.XenAPISession, 'wait_for_task', lambda x, y, z: None)
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stubs.Set(vm_utils.VMHelper, 'get_sr_path', fake_get_sr_path)
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stubs.Set(vmops.VMOps, 'reset_network', fake_reset_network)
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stubs.Set(vmops.VMOps, '_shutdown', fake_shutdown)
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