202 lines
7.1 KiB
Python
202 lines
7.1 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 magnum.openstack.common import log as logging
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from magnum.openstack.common import utils
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LOG = logging.getLogger(__name__)
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class KubeClient(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(KubeClient, self).__init__()
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# TODO(pkilambi): Add server endpoint config
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@staticmethod
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def service_create(service):
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LOG.debug("service_create with contents %s" % service)
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try:
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if service.service_definition_url:
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out, err = utils.trycmd('kubectl', 'create', '-f',
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service.service_definition_url)
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else:
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# TODO(jay-lau-513) Translate the contents to a json stdin
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out, err = utils.trycmd('echo service | kubectl', 'create',
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'-f', '-')
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't create service with contents %s \
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due to error %s" % (service, e))
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return False
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return True
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@staticmethod
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def service_update(service):
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LOG.debug("service_update with contents %s" % service)
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try:
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if service.service_definition_url:
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out, err = utils.trycmd('kubectl', 'update', '-f',
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service.service_definition_url)
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else:
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# TODO(jay-lau-513) Translate the contents to a json stdin
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out, err = utils.trycmd('echo service | kubectl', 'update',
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'-f', '-')
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't update service with contents %s \
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due to error %s" % (service, e))
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return False
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return True
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@staticmethod
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def service_list():
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LOG.debug("service_list")
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try:
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out = utils.execute('kubectl', 'get', 'services')
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pod_data = [s.split() for s in out.split('\n')]
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return pod_data
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except Exception as e:
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LOG.error("Couldn't get list of services due to error %s" % e)
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return None
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@staticmethod
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def service_delete(uuid):
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LOG.debug("service_delete %s" % uuid)
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try:
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out, err = utils.trycmd('kubectl', 'delete', 'service', uuid)
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't delete service %s due to error %s"
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% (uuid, e))
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return False
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return False
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@staticmethod
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def service_get(uuid):
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LOG.debug("service_get %s" % uuid)
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try:
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out = utils.execute('kubectl', 'get', 'service', uuid)
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# TODO(pkilambi): process the output as needed
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return out
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except Exception as e:
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LOG.error("Couldn't get service %s due to error %s" % (uuid, e))
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return None
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@staticmethod
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def service_show(uuid):
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LOG.debug("service_show %s" % uuid)
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try:
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out = utils.execute('kubectl', 'describe', 'service', uuid)
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# TODO(pkilambi): process the output as needed
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return out
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except Exception as e:
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LOG.error("Couldn't describe service %s due to error %s"
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% (uuid, e))
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return None
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# Pod Operations
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@staticmethod
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def pod_create(contents):
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LOG.debug("pod_create contents %s" % contents)
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try:
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if contents.pod_definition_url:
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out, err = utils.trycmd('kubectl', 'create', '-f',
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contents.pod_definition_url)
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else:
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# TODO(jay-lau-513) Translate the contents to a json stdin
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out, err = utils.trycmd('echo contents | kubectl', 'create',
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'-f', '-')
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't create pod with contents %s due to error %s"
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% (contents, e))
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return False
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return True
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@staticmethod
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def pod_update(contents):
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LOG.debug("pod_update contents %s" % contents)
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try:
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if contents.pod_definition_url:
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out, err = utils.trycmd('kubectl', 'update', '-f',
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contents.pod_definition_url)
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else:
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# TODO(jay-lau-513) Translate the contents to a json stdin
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out, err = utils.trycmd('echo contents | kubectl', 'update',
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'-f', '-')
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't update pod with contents %s due to error %s"
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% (contents, e))
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return False
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return True
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@staticmethod
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def pod_list():
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LOG.debug("pod_list")
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try:
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out = utils.execute('kubectl', 'get', 'pods')
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pod_data = [s.split() for s in out.split('\n')]
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return pod_data
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except Exception as e:
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LOG.error("Couldn't get list of pods due to error %s" % e)
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return None
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@staticmethod
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def pod_delete(uuid):
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LOG.debug("pod_delete %s" % uuid)
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try:
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out, err = utils.trycmd('kubectl', 'delete', 'pod', uuid)
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if err:
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return False
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except Exception as e:
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LOG.error("Couldn't delete pod %s due to error %s" % (uuid, e))
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return False
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return True
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@staticmethod
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def pod_get(uuid):
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LOG.debug("pod_get %s" % uuid)
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try:
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out = utils.execute('kubectl', 'get', 'pod', uuid)
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# TODO(pkilambi): process the output as needed
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return out
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except Exception as e:
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LOG.error("Couldn't get pod %s due to error %s" % (uuid, e))
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return None
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@staticmethod
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def pod_show(uuid):
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LOG.debug("pod_show %s" % uuid)
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try:
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out = utils.execute('kubectl', 'describe', 'pod', uuid)
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# TODO(pkilambi): process the output as needed
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return out
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except Exception as e:
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LOG.error("Couldn't show pod %s due to error %s" % (uuid, e))
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return None
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