108 lines
3.4 KiB
Python
108 lines
3.4 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 logging
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from os_faults.ansible import executor
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from os_faults.api import container
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from os_faults.api import error
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LOG = logging.getLogger(__name__)
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class DockerContainers(container.Container):
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"""Docker container
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This is docker container driver for any docker containers supported by
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Ansible. Please refer to Ansible documentation
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https://docs.ansible.com/ansible/latest/modules/docker_container_module.html
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for the whole list.
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**Example configuration:**
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.. code-block:: yaml
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containers:
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app:
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driver: docker_container
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args:
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container_name: app
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parameters:
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- **container_name** - name of the container
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"""
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NAME = 'docker_container'
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DESCRIPTION = 'Docker container'
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CONFIG_SCHEMA = {
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'type': 'object',
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'properties': {
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'container_name': {'type': 'string'},
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},
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'required': ['container_name'],
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'additionalProperties': False,
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}
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def __init__(self, *args, **kwargs):
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super(DockerContainers, self).__init__(*args, **kwargs)
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self.container_name = self.config['container_name']
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def _run_task(self, nodes, task, message):
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nodes = nodes if nodes is not None else self.get_nodes()
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if len(nodes) == 0:
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raise error.ContainerError(
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'Container %s is not found on any nodes' % self.container_name)
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LOG.info('%s container %s on nodes: %s',
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message, self.container_name, nodes.get_ips())
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return self.cloud_management.execute_on_cloud(nodes.hosts, task)
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def discover_nodes(self):
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nodes = self.cloud_management.get_nodes()
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cmd = 'bash -c "docker ps | grep \'{}\'"'.format(self.container_name)
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results = self.cloud_management.execute_on_cloud(
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nodes.hosts, {'command': cmd}, False)
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success_ips = [r.host for r in results
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if r.status == executor.STATUS_OK]
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hosts = [h for h in nodes.hosts if h.ip in success_ips]
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LOG.debug('Container %s is discovered on nodes %s',
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self.container_name, hosts)
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return self.node_cls(cloud_management=self.cloud_management,
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hosts=hosts)
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def start(self, nodes=None):
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task = {
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'docker_container': {
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'name': self.container_name, 'state': 'started'
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},
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}
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self._run_task(nodes, task, 'Start')
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def terminate(self, nodes=None):
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task = {
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'docker_container': {
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'name': self.container_name, 'state': 'stopped',
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},
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}
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self._run_task(nodes, task, 'Terminate')
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def restart(self, nodes=None):
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task = {
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'docker_container': {
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'name': self.container_name, 'state': 'started',
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'restart': 'yes'
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},
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}
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self._run_task(nodes, task, 'Restart')
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