293 lines
12 KiB
Python
293 lines
12 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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from oslo_log import log as logging
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from magnum.common import exception
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from magnum.common import k8s_manifest
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from magnum.common.pythonk8sclient.swagger_client import rest
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from magnum.common import utils
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from magnum.conductor import k8s_api as k8s
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from magnum.conductor import utils as conductor_utils
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from magnum import objects
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import ast
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LOG = logging.getLogger(__name__)
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class Handler(object):
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"""Magnum Kubernetes RPC handler.
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These are the backend operations. They are executed by the backend service.
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API calls via AMQP (within the ReST API) trigger the handlers to be called.
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"""
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def __init__(self):
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super(Handler, self).__init__()
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def service_create(self, context, service):
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LOG.debug("service_create")
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self.k8s_api = k8s.create_k8s_api(context, service)
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manifest = k8s_manifest.parse(service.manifest)
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try:
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self.k8s_api.create_namespaced_service(body=manifest,
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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# call the service object to persist in db
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service.create(context)
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return service
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def service_update(self, context, service):
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LOG.debug("service_update %s", service.uuid)
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self.k8s_api = k8s.create_k8s_api(context, service)
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manifest = k8s_manifest.parse(service.manifest)
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try:
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self.k8s_api.replace_namespaced_service(name=str(service.name),
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body=manifest,
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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# call the service object to persist in db
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service.refresh(context)
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service.save()
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return service
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def service_delete(self, context, uuid):
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LOG.debug("service_delete %s", uuid)
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service = objects.Service.get_by_uuid(context, uuid)
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self.k8s_api = k8s.create_k8s_api(context, service)
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if conductor_utils.object_has_stack(context, service):
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try:
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self.k8s_api.delete_namespaced_service(name=str(service.name),
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namespace='default')
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except rest.ApiException as err:
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if err.status == 404:
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pass
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else:
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raise exception.KubernetesAPIFailed(err=err)
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# call the service object to persist in db
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service.destroy(context)
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# Pod Operations
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def pod_create(self, context, pod):
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LOG.debug("pod_create")
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self.k8s_api = k8s.create_k8s_api(context, pod)
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manifest = k8s_manifest.parse(pod.manifest)
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try:
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resp = self.k8s_api.create_namespaced_pod(body=manifest,
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namespace='default')
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except rest.ApiException as err:
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pod.status = 'failed'
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if err.status != 409:
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pod.create(context)
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raise exception.KubernetesAPIFailed(err=err)
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pod.status = resp.status.phase
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pod.host = resp.spec.node_name
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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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# When do we get pod labels and name?
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pod.create(context)
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return pod
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def pod_update(self, context, pod):
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LOG.debug("pod_update %s", pod.uuid)
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self.k8s_api = k8s.create_k8s_api(context, pod)
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manifest = k8s_manifest.parse(pod.manifest)
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try:
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self.k8s_api.replace_namespaced_pod(name=str(pod.name),
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body=manifest,
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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# call the pod object to persist in db
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pod.refresh(context)
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pod.save()
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return pod
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def pod_delete(self, context, uuid):
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LOG.debug("pod_delete %s", uuid)
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pod = objects.Pod.get_by_uuid(context, uuid)
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self.k8s_api = k8s.create_k8s_api(context, pod)
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if conductor_utils.object_has_stack(context, pod):
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try:
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self.k8s_api.delete_namespaced_pod(name=str(pod.name), body={},
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namespace='default')
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except rest.ApiException as err:
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if err.status == 404:
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pass
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else:
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raise exception.KubernetesAPIFailed(err=err)
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# call the pod object to persist in db
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pod.destroy(context)
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# Replication Controller Operations
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def rc_create(self, context, rc):
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LOG.debug("rc_create")
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self.k8s_api = k8s.create_k8s_api_rc(context, rc.bay_uuid)
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manifest = k8s_manifest.parse(rc.manifest)
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try:
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resp = self.k8s_api.create_namespaced_replication_controller(
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body=manifest,
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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if resp is None:
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raise exception.ReplicationControllerCreationFailed(
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bay_uuid=rc.bay_uuid)
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rc['uuid'] = resp.metadata.uid
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rc['name'] = resp.metadata.name
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rc['images'] = [c.image for c in resp.spec.template.spec.containers]
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rc['labels'] = ast.literal_eval(resp.metadata.labels)
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rc['replicas'] = resp.status.replicas
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return rc
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def rc_update(self, context, rc_ident, bay_ident, manifest):
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LOG.debug("rc_update %s", rc_ident)
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# Since bay identifier is specified verify whether its a UUID
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# or Name. If name is specified as bay identifier need to extract
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# the bay uuid since its needed to get the k8s_api object.
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if not utils.is_uuid_like(bay_ident):
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bay = objects.Bay.get_by_name(context, bay_ident)
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bay_ident = bay.uuid
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bay_uuid = bay_ident
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self.k8s_api = k8s.create_k8s_api_rc(context, bay_uuid)
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if utils.is_uuid_like(rc_ident):
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rc = objects.ReplicationController.get_by_uuid(context, rc_ident,
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bay_uuid,
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self.k8s_api)
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else:
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rc = objects.ReplicationController.get_by_name(context, rc_ident,
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bay_uuid,
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self.k8s_api)
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try:
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resp = self.k8s_api.replace_namespaced_replication_controller(
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name=str(rc.name),
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body=manifest,
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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if resp is None:
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raise exception.ReplicationControllerNotFound(rc=rc.uuid)
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rc['uuid'] = resp.metadata.uid
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rc['name'] = resp.metadata.name
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rc['project_id'] = context.project_id
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rc['user_id'] = context.user_id
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rc['images'] = [c.image for c in resp.spec.template.spec.containers]
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rc['bay_uuid'] = bay_uuid
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rc['labels'] = ast.literal_eval(resp.metadata.labels)
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rc['replicas'] = resp.status.replicas
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return rc
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def rc_delete(self, context, rc_ident, bay_ident):
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LOG.debug("rc_delete %s", rc_ident)
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# Since bay identifier is specified verify whether its a UUID
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# or Name. If name is specified as bay identifier need to extract
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# the bay uuid since its needed to get the k8s_api object.
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if not utils.is_uuid_like(bay_ident):
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bay = objects.Bay.get_by_name(context, bay_ident)
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bay_ident = bay.uuid
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bay_uuid = bay_ident
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self.k8s_api = k8s.create_k8s_api_rc(context, bay_uuid)
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if utils.is_uuid_like(rc_ident):
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rc = objects.ReplicationController.get_by_uuid(context, rc_ident,
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bay_uuid,
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self.k8s_api)
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rc_name = rc.name
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else:
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rc_name = rc_ident
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if conductor_utils.object_has_stack(context, bay_uuid):
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try:
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self.k8s_api.delete_namespaced_replication_controller(
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name=str(rc_name),
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body={},
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namespace='default')
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except rest.ApiException as err:
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if err.status == 404:
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pass
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else:
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raise exception.KubernetesAPIFailed(err=err)
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def rc_show(self, context, rc_ident, bay_ident):
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LOG.debug("rc_show %s", rc_ident)
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# Since bay identifier is specified verify whether its a UUID
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# or Name. If name is specified as bay identifier need to extract
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# the bay uuid since its needed to get the k8s_api object.
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if not utils.is_uuid_like(bay_ident):
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bay = objects.Bay.get_by_name(context, bay_ident)
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bay_ident = bay.uuid
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bay_uuid = bay_ident
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self.k8s_api = k8s.create_k8s_api_rc(context, bay_uuid)
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if utils.is_uuid_like(rc_ident):
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rc = objects.ReplicationController.get_by_uuid(context, rc_ident,
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bay_uuid,
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self.k8s_api)
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else:
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rc = objects.ReplicationController.get_by_name(context, rc_ident,
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bay_uuid,
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self.k8s_api)
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return rc
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def rc_list(self, context, bay_ident):
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# Since bay identifier is specified verify whether its a UUID
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# or Name. If name is specified as bay identifier need to extract
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# the bay uuid since its needed to get the k8s_api object.
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if not utils.is_uuid_like(bay_ident):
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bay = objects.Bay.get_by_name(context, bay_ident)
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bay_ident = bay.uuid
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bay_uuid = bay_ident
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self.k8s_api = k8s.create_k8s_api_rc(context, bay_uuid)
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try:
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resp = self.k8s_api.list_namespaced_replication_controller(
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namespace='default')
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except rest.ApiException as err:
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raise exception.KubernetesAPIFailed(err=err)
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if resp is None:
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raise exception.ReplicationControllerListNotFound(
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bay_uuid=bay_uuid)
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rcs = []
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for entry in resp._items:
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rc = {}
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rc['uuid'] = entry.metadata.uid
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rc['name'] = entry.metadata.name
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rc['project_id'] = context.project_id
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rc['user_id'] = context.user_id
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rc['images'] = [
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c.image for c in entry.spec.template.spec.containers]
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rc['bay_uuid'] = bay_uuid
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# Convert string to dictionary
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rc['labels'] = ast.literal_eval(entry.metadata.labels)
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rc['replicas'] = entry.status.replicas
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rc_obj = objects.ReplicationController(context, **rc)
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rcs.append(rc_obj)
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return rcs
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