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# Copyright 2019, 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.
# !mitogen: minify_safe
import mitogen.parent
class Options(mitogen.parent.Options):
container = None
lxc_path = 'lxc'
python_path = 'python'
def __init__(self, container, lxc_path=None, **kwargs):
super(Options, self).__init__(**kwargs)
self.container = container
if lxc_path:
self.lxc_path = lxc_path
class Connection(mitogen.parent.Connection):
options_class = Options
child_is_immediate_subprocess = False
create_child_args = {
# If lxc finds any of stdin, stdout, stderr connected to a TTY, to
# prevent input injection it creates a proxy pty, forcing all IO to be
# buffered in <4KiB chunks. So ensure stderr is also routed to the
# socketpair.
'merge_stdio': True
}
eof_error_hint = (
'Note: many versions of LXC do not report program execution failure '
'meaningfully. Please check the host logs (/var/log) for more '
'information.'
)
def _get_name(self):
return u'lxd.' + self.options.container
def get_boot_command(self):
bits = [
self.options.lxc_path,
'exec',
'--mode=noninteractive',
self.options.container,
'--',
]
return bits + super(Connection, self).get_boot_command()
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