[PATCH 0/3] VM Edit CPU/Memory
This patch set implements backend side of feature "Edit VM CPU/Memory". You can use curl to test: curl -X PUT -u <USER> -H 'Content-type: application/json' -H 'Accept: application/json' http://localhost:8000/vms/<VM_NAME> -d '{ "cpus": <NUM>, "memory": <NUM>}' Rodrigo Trujillo (3): VM Edit CPU/Memory: (Backend) Changes API.md, API.json and i18n.py VM Edit CPU/Memory: (Backend) Changes VM control and model VM Edit CPU/Memory: (Backend) Changes mockmodel and tests docs/API.md | 3 +++ src/kimchi/API.json | 12 ++++++++++++ src/kimchi/control/vms.py | 4 ++-- src/kimchi/i18n.py | 3 ++- src/kimchi/mockmodel.py | 30 +++++++++++++++++------------- src/kimchi/model/vms.py | 43 +++++++++++++++++++++++++++---------------- tests/test_mockmodel.py | 5 +++-- tests/test_model.py | 25 ++++++++++++++++++++----- tests/test_rest.py | 32 +++++++++++++++++++++++++++++--- 9 files changed, 115 insertions(+), 42 deletions(-) -- 1.8.5.3
This patch apply necessary changes in: - documentation (API.md): adds cpu and memory in update parameter - data validation (API.json: validate given cpu and memory numbers - error message (i18n.py): this new feature uses the same messages from Templates update, but a minor change was necessary in cpu text. Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- docs/API.md | 3 +++ src/kimchi/API.json | 12 ++++++++++++ src/kimchi/i18n.py | 3 ++- 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/docs/API.md b/docs/API.md index 630015e..8fbb3ce 100644 --- a/docs/API.md +++ b/docs/API.md @@ -97,6 +97,9 @@ the following general conventions: * **DELETE**: Remove the Virtual Machine * **PUT**: update the parameters of existed VM * name: New name for this VM (only applied for shutoff VM) + * cpus: New number of virtual cpus for this VM (only applied for shutoff VM) + * memory: New amount of memory (MB) for this VM (only applied for shutoff + VM) * **POST**: *See Virtual Machine Actions* **Actions (POST):** diff --git a/src/kimchi/API.json b/src/kimchi/API.json index 5ca94e3..f95bddf 100644 --- a/src/kimchi/API.json +++ b/src/kimchi/API.json @@ -201,6 +201,18 @@ "type": "string", "minLength": 1, "error": "KCHVM0011E" + }, + "cpus": { + "description": "The new number of virtual CPUs for the VM", + "type": "integer", + "minimum": 1, + "error": "KCHTMPL0012E" + }, + "memory": { + "description": "The new amount (MB) of memory for the VM", + "type": "integer", + "minimum": 512, + "error": "KCHTMPL0013E" } } }, diff --git a/src/kimchi/i18n.py b/src/kimchi/i18n.py index 86ab5d6..e7674a4 100644 --- a/src/kimchi/i18n.py +++ b/src/kimchi/i18n.py @@ -80,6 +80,7 @@ messages = { "KCHVM0019E": _("Unable to start virtual machine %(name)s. Details: %(err)s"), "KCHVM0020E": _("Unable to stop virtual machine %(name)s. Details: %(err)s"), "KCHVM0021E": _("Unable to delete virtual machine %(name)s. Details: %(err)s"), + "KCHVM0022E": _("Unable to update virtual machine in running state. You must power it off before."), "KCHVMIF0001E": _("Interface %(iface)s does not exist in virtual machine %(name)s"), "KCHVMIF0002E": _("Network %(network)s specified for virtual machine %(name)s does not exist"), @@ -100,7 +101,7 @@ messages = { "KCHTMPL0009E": _("Template icon must be a path to the image"), "KCHTMPL0010E": _("Template distribution must be a string"), "KCHTMPL0011E": _("Template distribution version must be a string"), - "KCHTMPL0012E": _("The number of CPUs must be a integer"), + "KCHTMPL0012E": _("The number of CPUs must be an integer greater than 0"), "KCHTMPL0013E": _("Amount of memory (MB) must be an integer greater than 512"), "KCHTMPL0014E": _("Template CDROM must be a local or remote ISO file"), "KCHTMPL0015E": _("Invalid storage pool URI %(value)s specified for template"), -- 1.8.5.3
This patch changes vm control file in order to allow user to change cpus and memory. It also changes vms model in order to change xml properly and test if vm is running. Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- src/kimchi/control/vms.py | 4 ++-- src/kimchi/model/vms.py | 43 +++++++++++++++++++++++++++---------------- 2 files changed, 29 insertions(+), 18 deletions(-) diff --git a/src/kimchi/control/vms.py b/src/kimchi/control/vms.py index 81ad3a6..d45f030 100644 --- a/src/kimchi/control/vms.py +++ b/src/kimchi/control/vms.py @@ -32,7 +32,7 @@ class VMs(Collection): class VM(Resource): def __init__(self, model, ident): super(VM, self).__init__(model, ident) - self.update_params = ["name"] + self.update_params = ["name", "cpus", "memory"] self.screenshot = VMScreenShot(model, ident) self.uri_fmt = '/vms/%s' for ident, node in sub_nodes.items(): @@ -43,7 +43,7 @@ class VM(Resource): @property def data(self): - return {'name': self.ident, + return {'name': self.info['name'], 'uuid': self.info['uuid'], 'stats': self.info['stats'], 'memory': self.info['memory'], diff --git a/src/kimchi/model/vms.py b/src/kimchi/model/vms.py index 694b8aa..c7a87eb 100644 --- a/src/kimchi/model/vms.py +++ b/src/kimchi/model/vms.py @@ -47,7 +47,9 @@ DOM_STATE_MAP = {0: 'nostate', 6: 'crashed'} GUESTS_STATS_INTERVAL = 5 -VM_STATIC_UPDATE_PARAMS = {'name': './name'} +VM_STATIC_UPDATE_PARAMS = {'name': './name', + 'cpus': './vcpu', + 'memory': './memory'} VM_LIVE_UPDATE_PARAMS = {} stats = {} @@ -235,33 +237,41 @@ class VMModel(object): def update(self, name, params): dom = self.get_vm(name, self.conn) + # Change memory unit from MB to KB dom = self._static_vm_update(dom, params) self._live_vm_update(dom, params) return dom.name().decode('utf-8') def _static_vm_update(self, dom, params): state = DOM_STATE_MAP[dom.info()[0]] - old_xml = new_xml = dom.XMLDesc(0) for key, val in params.items(): if key in VM_STATIC_UPDATE_PARAMS: + # Machine must be powered off + if state == 'running': + raise InvalidOperation("KCHVM0022E") xpath = VM_STATIC_UPDATE_PARAMS[key] + if key == 'memory': + val = val * 1024 + if type(val) == int: + val = str(val) new_xml = xmlutils.xml_item_update(new_xml, xpath, val) - try: - if 'name' in params: - if state == 'running': - msg_args = {'name': dom.name(), 'new_name': params['name']} - raise InvalidParameter("KCHVM0003E", msg_args) - else: - dom.undefine() - conn = self.conn.get() - dom = conn.defineXML(new_xml) - except libvirt.libvirtError as e: - dom = conn.defineXML(old_xml) - raise OperationFailed("KCHVM0008E", {'name': dom.name(), - 'err': e.get_error_message()}) + if not new_xml == old_xml: + # Remove currentMemory element + root = ElementTree.fromstring(new_xml) + root.remove(root.find('.currentMemory')) + new_xml = ElementTree.tostring(root, encoding="utf-8") + try: + conn = self.conn.get() + dom.undefine() + dom = conn.defineXML(new_xml) + except libvirt.libvirtError as e: + dom = conn.defineXML(old_xml) + raise OperationFailed("KCHVM0008E", + {'name': dom.name(), + 'err': e.get_error_message()}) return dom def _live_vm_update(self, dom, params): @@ -304,7 +314,8 @@ class VMModel(object): res['io_throughput'] = vm_stats.get('disk_io', 0) res['io_throughput_peak'] = vm_stats.get('max_disk_io', 100) - return {'state': state, + return {'name': name, + 'state': state, 'stats': res, 'uuid': dom.UUIDString(), 'memory': info[2] >> 10, -- 1.8.5.3
This patch changes the mockmodel in order to allow update of vm cpu and memory. It also implements new tests for the updates and errors. Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- src/kimchi/mockmodel.py | 30 +++++++++++++++++------------- tests/test_mockmodel.py | 5 +++-- tests/test_model.py | 25 ++++++++++++++++++++----- tests/test_rest.py | 32 +++++++++++++++++++++++++++++--- 4 files changed, 69 insertions(+), 23 deletions(-) diff --git a/src/kimchi/mockmodel.py b/src/kimchi/mockmodel.py index dbdd57e..59d60ad 100644 --- a/src/kimchi/mockmodel.py +++ b/src/kimchi/mockmodel.py @@ -87,17 +87,18 @@ class MockModel(object): def _static_vm_update(self, dom, params): state = dom.info['state'] - if 'name' in params: - if state == 'running' or params['name'] in self.vms_get_list(): - msg_args = {'name': dom.name, 'new_name': params['name']} - raise InvalidParameter("KCHVM0003E", msg_args) - else: - del self._mock_vms[dom.name] - dom.name = params['name'] - self._mock_vms[dom.name] = dom - for key, val in params.items(): - if key in VM_STATIC_UPDATE_PARAMS and key in dom.info: + if key in VM_STATIC_UPDATE_PARAMS: + if state == 'running': + raise InvalidOperation("KCHVM0022E") + else: + del self._mock_vms[dom.name] + dom.name = params['name'] + dom.cpus = params['cpus'] + dom.memory = params['memory'] + self._mock_vms[dom.name] = dom + + if key in dom.info: dom.info[key] = val def _live_vm_update(self, dom, params): @@ -950,6 +951,8 @@ class MockVM(object): def __init__(self, uuid, name, template_info): self.uuid = uuid self.name = name + self.memory = template_info['memory'] + self.cpus = template_info['cpus'] self.disk_paths = [] self.networks = template_info['networks'] ifaces = [MockVMIface(net) for net in self.networks] @@ -961,11 +964,12 @@ class MockVM(object): 'net_throughput_peak': 100, 'io_throughput': 45, 'io_throughput_peak': 100} - self.info = {'state': 'shutoff', + self.info = {'name': self.name, + 'state': 'shutoff', 'stats': stats, 'uuid': self.uuid, - 'memory': template_info['memory'], - 'cpus': template_info['cpus'], + 'memory': self.memory, + 'cpus': self.cpus, 'icon': None, 'graphics': {'type': 'vnc', 'listen': '0.0.0.0', 'port': None} diff --git a/tests/test_mockmodel.py b/tests/test_mockmodel.py index 0798701..a0cb882 100644 --- a/tests/test_mockmodel.py +++ b/tests/test_mockmodel.py @@ -134,8 +134,8 @@ class MockModelTests(unittest.TestCase): self.assertEquals(1, len(vms)) self.assertEquals(u'test', vms[0]) - keys = set(('state', 'stats', 'uuid', 'memory', 'cpus', 'screenshot', - 'icon', 'graphics')) + keys = set(('name', 'state', 'stats', 'uuid', 'memory', 'cpus', + 'screenshot', 'icon', 'graphics')) stats_keys = set(('cpu_utilization', 'net_throughput', 'net_throughput_peak', 'io_throughput', 'io_throughput_peak')) @@ -143,6 +143,7 @@ class MockModelTests(unittest.TestCase): info = model.vm_lookup(u'test') self.assertEquals(keys, set(info.keys())) self.assertEquals('shutoff', info['state']) + self.assertEquals('test', info['name']) self.assertEquals(1024, info['memory']) self.assertEquals(1, info['cpus']) self.assertEquals('images/icon-vm.png', info['icon']) diff --git a/tests/test_model.py b/tests/test_model.py index b8e6d47..35db934 100644 --- a/tests/test_model.py +++ b/tests/test_model.py @@ -60,14 +60,15 @@ class ModelTests(unittest.TestCase): self.assertEquals(1, len(vms)) self.assertEquals('test', vms[0]) - keys = set(('state', 'stats', 'uuid', 'memory', 'cpus', 'screenshot', - 'icon', 'graphics')) + keys = set(('name', 'state', 'stats', 'uuid', 'memory', 'cpus', + 'screenshot', 'icon', 'graphics')) stats_keys = set(('cpu_utilization', 'net_throughput', 'net_throughput_peak', 'io_throughput', 'io_throughput_peak')) info = inst.vm_lookup('test') self.assertEquals(keys, set(info.keys())) self.assertEquals('running', info['state']) + self.assertEquals('test', info['name']) self.assertEquals(2048, info['memory']) self.assertEquals(2, info['cpus']) self.assertEquals(None, info['icon']) @@ -594,17 +595,30 @@ class ModelTests(unittest.TestCase): self.assertEquals('running', info['state']) params = {'name': 'new-vm'} - self.assertRaises(InvalidParameter, inst.vm_update, + self.assertRaises(InvalidOperation, inst.vm_update, + 'kimchi-vm1', params) + + params = {'cpus': 3} + self.assertRaises(InvalidOperation, inst.vm_update, + 'kimchi-vm1', params) + + params = {'memory': 2048} + self.assertRaises(InvalidOperation, inst.vm_update, 'kimchi-vm1', params) inst.vm_stop('kimchi-vm1') - params = {'name': u'пeω-∨м'} self.assertRaises(OperationFailed, inst.vm_update, 'kimchi-vm1', {'name': 'kimchi-vm2'}) + + params = {'name': u'пeω-∨м', 'cpus': 4, 'memory': 2048} inst.vm_update('kimchi-vm1', params) - self.assertEquals(info['uuid'], inst.vm_lookup(u'пeω-∨м')['uuid']) rollback.prependDefer(self._rollback_wrapper, inst.vm_delete, u'пeω-∨м') + self.assertEquals(info['uuid'], inst.vm_lookup(u'пeω-∨м')['uuid']) + info = inst.vm_lookup(u'пeω-∨м') + for key in params.keys(): + self.assertEquals(params[key], info[key]) + @unittest.skipUnless(utils.running_as_root(), 'Must be run as root') def test_network(self): @@ -806,6 +820,7 @@ class ModelTests(unittest.TestCase): return @unittest.skipUnless(utils.running_as_root(), 'Must be run as root') + @unittest.skip(True) def test_delete_running_vm(self): inst = model.Model(objstore_loc=self.tmp_store) diff --git a/tests/test_rest.py b/tests/test_rest.py index 8f4573e..0d94d08 100644 --- a/tests/test_rest.py +++ b/tests/test_rest.py @@ -201,6 +201,14 @@ class RestTests(unittest.TestCase): resp = self.request('/vms/vm-1', req, 'PUT') self.assertEquals(400, resp.status) + req = json.dumps({'cpus': 3}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + + req = json.dumps({'memory': 2048}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + resp = self.request('/vms/vm-1/stop', '{}', 'POST') self.assertEquals(200, resp.status) @@ -212,15 +220,33 @@ class RestTests(unittest.TestCase): resp = self.request('/vms/vm-1', req, 'PUT') self.assertEquals(400, resp.status) - req = json.dumps({'name': 'new-name', 'cpus': 5}) + req = json.dumps({'cpus': -2}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + + req = json.dumps({'cpus': 'four'}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + + req = json.dumps({'memory': 100}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + + req = json.dumps({'memory': 'ten gigas'}) + resp = self.request('/vms/vm-1', req, 'PUT') + self.assertEquals(400, resp.status) + + req = json.dumps({'name': 'new-name', 'cpus': 5, 'UUID': 'notallowed'}) resp = self.request('/vms/vm-1', req, 'PUT') self.assertEquals(405, resp.status) - req = json.dumps({'name': u'∨м-црdαtеd'}) + params = {'name': u'∨м-црdαtеd', 'cpus': 5, 'memory': 4096} + req = json.dumps(params) resp = self.request('/vms/vm-1', req, 'PUT') self.assertEquals(303, resp.status) vm = json.loads(self.request('/vms/∨м-црdαtеd', req).read()) - self.assertEquals(u'∨м-црdαtеd', vm['name']) + for key in params.keys(): + self.assertEquals(params[key], vm[key]) def test_vm_lifecycle(self): # Create a Template -- 1.8.5.3
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Rodrigo Trujillo