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Add lxd connection plugin.
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112
lib/ansible/plugins/connection/lxd.py
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112
lib/ansible/plugins/connection/lxd.py
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# (c) 2016 Matt Clay <matt@mystile.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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from distutils.spawn import find_executable
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from subprocess import call, Popen, PIPE
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from ansible.errors import AnsibleError, AnsibleConnectionFailure, AnsibleFileNotFound
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from ansible.plugins.connection import ConnectionBase
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from ansible.utils.unicode import to_bytes, to_unicode
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class Connection(ConnectionBase):
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""" lxd based connections """
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transport = "lxd"
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has_pipelining = True
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def __init__(self, play_context, new_stdin, *args, **kwargs):
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super(Connection, self).__init__(play_context, new_stdin, *args, **kwargs)
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self._host = self._play_context.remote_addr
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self._lxc_cmd = find_executable("lxc")
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if not self._lxc_cmd:
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raise AnsibleError("lxc command not found in PATH")
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if self._play_context.remote_user is not None and self._play_context.remote_user != 'root':
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self._display.warning('lxd does not support remote_user, using container default: root')
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def _connect(self):
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"""connect to lxd (nothing to do here) """
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super(Connection, self)._connect()
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if not self._connected:
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self._display.vvv(u"ESTABLISH LXD CONNECTION FOR USER: root", host=self._host)
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self._connected = True
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def exec_command(self, cmd, in_data=None, sudoable=True):
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""" execute a command on the lxd host """
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super(Connection, self).exec_command(cmd, in_data=in_data, sudoable=sudoable)
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self._display.vvv(u"EXEC {0}".format(cmd), host=self._host)
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local_cmd = [self._lxc_cmd, "exec", self._host, "--", self._play_context.executable, "-c", cmd]
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local_cmd = [to_bytes(i, errors='strict') for i in local_cmd]
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in_data = to_bytes(in_data, errors='strict', nonstring='passthru')
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process = Popen(local_cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
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stdout, stderr = process.communicate(in_data)
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stdout = to_unicode(stdout)
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stderr = to_unicode(stderr)
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if stderr == "error: Container is not running.\n":
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raise AnsibleConnectionFailure("container not running: %s" % self._host)
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if stderr == "error: not found\n":
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raise AnsibleConnectionFailure("container not found: %s" % self._host)
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return process.returncode, stdout, stderr
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def put_file(self, in_path, out_path):
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""" put a file from local to lxd """
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super(Connection, self).put_file(in_path, out_path)
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self._display.vvv(u"PUT {0} TO {1}".format(in_path, out_path), host=self._host)
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if not os.path.isfile(to_bytes(in_path, errors='strict')):
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raise AnsibleFileNotFound("input path is not a file: %s" % in_path)
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local_cmd = [self._lxc_cmd, "file", "push", in_path, self._host + "/" + out_path]
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local_cmd = [to_bytes(i, errors='strict') for i in local_cmd]
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call(local_cmd)
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def fetch_file(self, in_path, out_path):
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""" fetch a file from lxd to local """
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super(Connection, self).fetch_file(in_path, out_path)
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self._display.vvv(u"FETCH {0} TO {1}".format(in_path, out_path), host=self._host)
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local_cmd = [self._lxc_cmd, "file", "pull", self._host + "/" + in_path, out_path]
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local_cmd = [to_bytes(i, errors='strict') for i in local_cmd]
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call(local_cmd)
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def close(self):
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""" close the connection (nothing to do here) """
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super(Connection, self).close()
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self._connected = False
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@ -48,6 +48,13 @@ paramiko_ssh-no-pipelining ansible_ssh_pipelining=false
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ansible_host=localhost
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ansible_host=localhost
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ansible_connection=paramiko_ssh
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ansible_connection=paramiko_ssh
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[lxd]
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lxd-pipelining ansible_ssh_pipelining=true
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lxd-no-pipelining ansible_ssh_pipelining=false
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[lxd:vars]
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ansible_host=centos-7-amd64
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ansible_connection=lxd
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[test_default:children]
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[test_default:children]
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local
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local
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chroot
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chroot
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