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mitogen/ansible_mitogen/connection/mitogen.py

94 lines
3.4 KiB
Python

# Copyright 2017, David Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""
Basic Ansible connection plug-in mostly useful for testing functionality,
due to Ansible's use of the multiprocessing package a lot more work is required
to share the mitogen SSH connection across tasks.
Enable it by:
$ cat ansible.cfg
[defaults]
connection_plugins = plugins/connection
$ mkdir -p plugins/connection
$ cat > plugins/connection/mitogen_conn.py <<-EOF
from mitogen.ansible.connection import Connection
EOF
"""
from __future__ import absolute_import
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import ansible.errors
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import ansible.plugins.connection
import ansible_mitogen.helpers
import mitogen.unix
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class Connection(ansible.plugins.connection.ConnectionBase):
router = None
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context = None
become_methods = []
transport = 'mitogen'
@property
def connected(self):
return self.router is not None
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def _connect(self):
if self.connected:
return
self.router, self.parent = mitogen.unix.connect('/tmp/mitosock')
self.context = mitogen.service.call(self.parent, 500, {
'hostname': self._play_context.remote_addr,
})
def py_call(self, func, *args, **kwargs):
self._connect()
return self.context.call(func, *args, **kwargs)
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def exec_command(self, cmd, in_data=None, sudoable=True):
super(Connection, self).exec_command(cmd, in_data=in_data, sudoable=sudoable)
if in_data:
raise ansible.errors.AnsibleError("does not support module pipelining")
return self.py_call(ansible_mitogen.helpers.exec_command, cmd, in_data)
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def fetch_file(self, in_path, out_path):
output = self.py_call(ansible_mitogen.helpers.read_path, in_path)
ansible_mitogen.helpers.write_path(out_path, output)
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def put_file(self, in_path, out_path):
self.py_call(ansible_mitogen.helpers.write_path, out_path,
ansible_mitogen.helpers.read_path(in_path))
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def close(self):
self.router.broker.shutdown()
self.router.broker.join()