294 lines
9.6 KiB
Python
294 lines
9.6 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
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# 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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import sys
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from oslo_log import log as logging
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from oslo_utils import importutils
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from oslo_utils import units
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from zun.common.i18n import _
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import zun.conf
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from zun.container.os_capability.linux import os_capability_linux
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from zun import objects
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LOG = logging.getLogger(__name__)
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CONF = zun.conf.CONF
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def load_container_driver(container_driver=None):
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"""Load a container driver module.
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Load the container driver module specified by the container_driver
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configuration option or, if supplied, the driver name supplied as an
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argument.
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:param container_driver: a container driver name to override the config opt
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:returns: a ContainerDriver instance
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"""
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if not container_driver:
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container_driver = CONF.container_driver
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if not container_driver:
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LOG.error("Container driver option required, "
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"but not specified")
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sys.exit(1)
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LOG.info("Loading container driver '%s'", container_driver)
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try:
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if not container_driver.startswith('zun.'):
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container_driver = 'zun.container.%s' % container_driver
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driver = importutils.import_object(container_driver)
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if not isinstance(driver, ContainerDriver):
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raise Exception(_('Expected driver of type: %s') %
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str(ContainerDriver))
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return driver
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except ImportError:
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LOG.exception("Unable to load the container driver")
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sys.exit(1)
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class ContainerDriver(object):
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"""Base class for container drivers."""
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def create(self, context, container, **kwargs):
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"""Create a container."""
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raise NotImplementedError()
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def commit(self, context, container, repository, tag):
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"""Commit a container."""
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raise NotImplementedError()
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def delete(self, context, container, force):
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"""Delete a container."""
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raise NotImplementedError()
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def list(self, context):
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"""List all containers."""
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raise NotImplementedError()
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def update_containers_states(self, context, containers):
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"""Update containers states."""
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raise NotImplementedError()
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def show(self, context, container):
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"""Show the details of a container."""
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raise NotImplementedError()
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def reboot(self, context, container):
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"""Reboot a container."""
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raise NotImplementedError()
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def stop(self, context, container):
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"""Stop a container."""
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raise NotImplementedError()
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def start(self, context, container):
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"""Start a container."""
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raise NotImplementedError()
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def pause(self, context, container):
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"""Pause a container."""
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raise NotImplementedError()
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def unpause(self, context, container):
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"""Unpause a container."""
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raise NotImplementedError()
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def show_logs(self, context, container, stdout=True, stderr=True,
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timestamps=False, tail='all', since=None):
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"""Show logs of a container."""
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raise NotImplementedError()
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def execute_create(self, context, container, command, **kwargs):
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"""Create an execute instance for running a command."""
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raise NotImplementedError()
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def execute_run(self, exec_id):
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"""Run the command specified by an execute instance."""
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raise NotImplementedError()
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def execute_resize(self, exec_id, height, width):
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"""Resizes the tty session used by the exec."""
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raise NotImplementedError()
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def kill(self, context, container, signal):
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"""Kill a container with specified signal."""
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raise NotImplementedError()
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def get_websocket_url(self, context, container):
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"""Get websocket url of a container."""
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raise NotImplementedError()
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def resize(self, context, container, height, weight):
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"""Resize tty of a container."""
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raise NotImplementedError()
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def top(self, context, container, ps_args):
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"""Display the running processes inside the container."""
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raise NotImplementedError()
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def get_archive(self, context, container, path):
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"""Copy resource from a container."""
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raise NotImplementedError()
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def put_archive(self, context, container, path, data):
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"""Copy resource to a container."""
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raise NotImplementedError()
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def stats(self, context, container):
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"""Display stats of the container."""
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raise NotImplementedError()
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def create_sandbox(self, context, *args, **kwargs):
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"""Create a sandbox."""
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raise NotImplementedError()
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def delete_sandbox(self, context, container, sandbox_id):
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"""Delete a sandbox."""
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raise NotImplementedError()
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# Note: This is not currently used, but
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# may be used later
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def stop_sandbox(self, context, sandbox_id):
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"""Stop a sandbox."""
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raise NotImplementedError()
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def get_sandbox_name(self, container):
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"""Retrieve sandbox name."""
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raise NotImplementedError()
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def get_container_name(self, container):
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"""Retrieve sandbox name."""
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raise NotImplementedError()
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def get_addresses(self, context, container):
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"""Retrieve IP addresses of the container."""
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def update(self, context, container):
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"""Update a container."""
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raise NotImplementedError()
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def get_host_numa_topology(self):
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numa_topo_obj = objects.NUMATopology()
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os_capability_linux.LinuxHost().get_host_numa_topology(numa_topo_obj)
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return numa_topo_obj
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def get_pci_resources(self):
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return os_capability_linux.LinuxHost().get_pci_resources()
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def get_host_mem(self):
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return os_capability_linux.LinuxHost().get_host_mem()
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def get_host_info(self):
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raise NotImplementedError()
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def get_total_disk_for_container(self):
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return NotImplementedError()
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def get_cpu_used(self):
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raise NotImplementedError()
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def attach_volume(self, context, volume_mapping):
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raise NotImplementedError()
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def detach_volume(self, context, volume_mapping):
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raise NotImplementedError()
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def delete_volume(self, context, volume_mapping):
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raise NotImplementedError()
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def is_volume_available(self, context, volume_mapping):
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raise NotImplementedError()
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def add_security_group(self, context, container, security_group, **kwargs):
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raise NotImplementedError()
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def remove_security_group(self, context, container, security_group,
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**kwargs):
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raise NotImplementedError()
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def get_available_nodes(self):
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pass
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def get_available_resources(self, node):
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numa_topo_obj = self.get_host_numa_topology()
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node.numa_topology = numa_topo_obj
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meminfo = self.get_host_mem()
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(mem_total, mem_free, mem_ava, mem_used) = meminfo
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node.mem_total = mem_total // units.Ki
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node.mem_free = mem_free // units.Ki
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node.mem_available = mem_ava // units.Ki
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node.mem_used = mem_used // units.Ki
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info = self.get_host_info()
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(total, running, paused, stopped, cpus,
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architecture, os_type, os, kernel_version, labels) = info
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node.total_containers = total
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node.running_containers = running
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node.paused_containers = paused
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node.stopped_containers = stopped
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node.cpus = cpus
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node.architecture = architecture
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node.os_type = os_type
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node.os = os
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node.kernel_version = kernel_version
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cpu_used = self.get_cpu_used()
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node.cpu_used = cpu_used
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node.labels = labels
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disk_total = self.get_total_disk_for_container()
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node.disk_total = disk_total
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disk_quota_supported = self.node_support_disk_quota()
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node.disk_quota_supported = disk_quota_supported
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def node_is_available(self, nodename):
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"""Return whether this compute service manages a particular node."""
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if nodename in self.get_available_nodes():
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return True
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return False
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def network_detach(self, context, container, network):
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raise NotImplementedError()
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def network_attach(self, context, container, requested_network):
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raise NotImplementedError()
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def create_network(self, context, network):
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raise NotImplementedError()
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def inspect_network(self, network):
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raise NotImplementedError()
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def node_support_disk_quota(self):
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raise NotImplementedError()
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def get_host_default_base_size(self):
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raise NotImplementedError()
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def pull_image(self, context, repo, tag, **kwargs):
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raise NotImplementedError()
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def search_image(self, context, repo, tag, driver_name, exact_match):
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raise NotImplementedError()
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def create_image(self, context, image_name, image_driver):
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raise NotImplementedError()
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def upload_image_data(self, context, image, image_tag, image_data,
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image_driver):
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raise NotImplementedError()
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def delete_committed_image(self, context, img_id, image_driver):
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raise NotImplementedError()
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def delete_image(self, context, img_id, image_driver):
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raise NotImplementedError()
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