224 lines
7.2 KiB
Python
224 lines
7.2 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Magnum Kubernetes RPC handler."""
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from oslo_config import cfg
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from magnum.common import clients
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from magnum.conductor.handlers.common import kube_utils
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from magnum import objects
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from magnum.openstack.common._i18n import _
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from magnum.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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kubernetes_opts = [
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cfg.StrOpt('k8s_protocol',
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default='http',
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help=_('Default protocol of k8s master endpoint'
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' (http or https).')),
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cfg.IntOpt('k8s_port',
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default=8080,
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help=_('Default port of the k8s master endpoint.')),
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]
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cfg.CONF.register_opts(kubernetes_opts, group='kubernetes')
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def _retrieve_bay(ctxt, obj):
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bay_uuid = obj.bay_uuid
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return objects.Bay.get_by_uuid(ctxt, bay_uuid)
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def _retrieve_baymodel(ctxt, obj):
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return objects.BayModel.get_by_uuid(ctxt, obj.baymodel_id)
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def _retrieve_k8s_master_url(ctxt, obj):
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apiserver_port = cfg.CONF.kubernetes.k8s_port
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if hasattr(obj, 'bay_uuid'):
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obj = _retrieve_bay(ctxt, obj)
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baymodel = _retrieve_baymodel(ctxt, obj)
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if baymodel.apiserver_port is not None:
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apiserver_port = baymodel.apiserver_port
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params = {
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'k8s_protocol': cfg.CONF.kubernetes.k8s_protocol,
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'k8s_port': apiserver_port,
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'master_address': obj.master_address
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}
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return "%(k8s_protocol)s://%(master_address)s:%(k8s_port)s" % params
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def _object_has_stack(ctxt, obj):
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osc = clients.OpenStackClients(ctxt)
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if hasattr(obj, 'bay_uuid'):
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obj = _retrieve_bay(ctxt, obj)
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stack = osc.heat().stacks.get(obj.stack_id)
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if (stack.stack_status == 'DELETE_COMPLETE' or
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stack.stack_status == 'DELETE_IN_PROGRESS'):
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return False
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else:
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return True
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class Handler(object):
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"""These are the backend operations. They are executed by the backend
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service. API calls via AMQP (within the ReST API) trigger the
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handlers to be called.
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This handler acts as an interface to executes kubectl command line
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services.
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"""
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def __init__(self):
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super(Handler, self).__init__()
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self.kube_cli = kube_utils.KubeClient()
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def service_create(self, ctxt, service):
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LOG.debug("service_create")
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k8s_master_url = _retrieve_k8s_master_url(ctxt, service)
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# trigger a kubectl command
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status = self.kube_cli.service_create(k8s_master_url, service)
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if not status:
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return None
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# call the service object to persist in db
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service.create(ctxt)
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return service
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def service_update(self, ctxt, service):
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LOG.debug("service_update")
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# trigger a kubectl command
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status = self.kube_cli.service_update(service)
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if not status:
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return None
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# call the service object to persist in db
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service.refresh(ctxt)
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return service
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def service_list(self, ctxt):
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LOG.debug("service_list")
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return self.kube_cli.service_list()
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def service_delete(self, ctxt, uuid):
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LOG.debug("service_delete")
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service = objects.Service.get_by_uuid(ctxt, uuid)
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k8s_master_url = _retrieve_k8s_master_url(ctxt, service)
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if _object_has_stack(ctxt, service):
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# trigger a kubectl command
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status = self.kube_cli.service_delete(k8s_master_url, service.name)
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if not status:
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return None
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# call the service object to persist in db
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service.destroy(ctxt)
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def service_get(self, ctxt, uuid):
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LOG.debug("service_get")
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return self.kube_cli.service_get(uuid)
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def service_show(self, uuid):
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LOG.debug("service_show")
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return self.kube_cli.service_show(uuid)
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# Pod Operations
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def pod_create(self, ctxt, pod):
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LOG.debug("pod_create")
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k8s_master_url = _retrieve_k8s_master_url(ctxt, pod)
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# trigger a kubectl command
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status = self.kube_cli.pod_create(k8s_master_url, pod)
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# TODO(yuanying): Is this correct location of updating status?
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if not status:
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pod.status = 'failed'
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else:
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pod.status = 'pending'
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# call the pod object to persist in db
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# TODO(yuanying): parse pod file and,
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# - extract pod name and set it
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# - extract pod labels and set it
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# TODO(yuanying): Should kube_utils support definition_url?
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# When do we get pod labels and name?
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pod.create()
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return pod
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def pod_update(self, ctxt, pod):
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LOG.debug("pod_update")
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# trigger a kubectl command
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status = self.kube_cli.pod_update(pod)
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if not status:
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return None
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# call the pod object to persist in db
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pod.refresh(ctxt)
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return pod
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def pod_list(self, ctxt):
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LOG.debug("pod_list")
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return self.kube_cli.pod_list()
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def pod_delete(self, ctxt, uuid):
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LOG.debug("pod_delete ")
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# trigger a kubectl command
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pod = objects.Pod.get_by_uuid(ctxt, uuid)
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k8s_master_url = _retrieve_k8s_master_url(ctxt, pod)
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if _object_has_stack(ctxt, pod):
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status = self.kube_cli.pod_delete(k8s_master_url, pod.name)
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if not status:
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return None
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# call the pod object to persist in db
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pod.destroy(ctxt)
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def pod_get(self, ctxt, uuid):
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LOG.debug("pod_get")
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return self.kube_cli.pod_get(uuid)
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def pod_show(self, ctxt, uuid):
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LOG.debug("pod_show")
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return self.kube_cli.pod_show(uuid)
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# Replication Controller Operations
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def rc_create(self, ctxt, rc):
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LOG.debug("rc_create")
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k8s_master_url = _retrieve_k8s_master_url(ctxt, rc)
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# trigger a kubectl command
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status = self.kube_cli.rc_create(k8s_master_url, rc)
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if not status:
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return None
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# call the rc object to persist in db
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rc.create(ctxt)
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return rc
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def rc_update(self, ctxt, rc):
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LOG.debug("rc_update")
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# trigger a kubectl command
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status = self.kube_cli.rc_update(rc)
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if not status:
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return None
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# call the rc object to persist in db
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rc.refresh(ctxt)
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return rc
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def rc_delete(self, ctxt, uuid):
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LOG.debug("rc_delete ")
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rc = objects.ReplicationController.get_by_uuid(ctxt, uuid)
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k8s_master_url = _retrieve_k8s_master_url(ctxt, rc)
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if _object_has_stack(ctxt, rc):
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# trigger a kubectl command
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status = self.kube_cli.pod_delete(k8s_master_url, rc.name)
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if not status:
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return None
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# call the rc object to persist in db
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rc.destroy(ctxt)
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