mitogen/ansible_mitogen/plugins/connection/mitogen_kubectl.py

# coding: utf-8
# Copyright 2018, Yannig Perré
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
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# 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.
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# 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
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from __future__ import absolute_import
import os.path
import sys

try:
    from ansible.plugins.connection import kubectl
except ImportError:
    kubectl = None

from ansible.errors import AnsibleConnectionFailure
from ansible.module_utils.six import iteritems

try:
    import ansible_mitogen
except ImportError:
    base_dir = os.path.dirname(__file__)
    sys.path.insert(0, os.path.abspath(os.path.join(base_dir, '../../..')))
    del base_dir

import ansible_mitogen.connection


class Connection(ansible_mitogen.connection.Connection):
    transport = 'kubectl'

    not_supported_msg = (
        'The "mitogen_kubectl" plug-in requires a version of Ansible '
        'that ships with the "kubectl" connection plug-in.'
    )

    def __init__(self, *args, **kwargs):
        if kubectl is None:
            raise AnsibleConnectionFailure(self.not_supported_msg)
        super(Connection, self).__init__(*args, **kwargs)

    def get_extra_args(self):
        parameters = []
        for key, option in iteritems(kubectl.CONNECTION_OPTIONS):
            if self.get_task_var('ansible_' + key) is not None:
                parameters += [ option, self.get_task_var('ansible_' + key) ]

        return parameters