ad91b1a12b
Ansible 2.4 has changed the interface for var plugins. Our vars plugin shouldn't be used in ansible 2.4, because the features we were looking for are now standard. However the plugin is still shipped. So we need to ensure this vars plugin doesn't get loaded on ansible 2.4. Ansible will not load a vars plugin in its plugin location if no VarsModule is defined. This commit abuses this mechanism to conditionally load the vars module depending on the version, at the expense of throwing a warning in Ansible 2.4. Change-Id: I6e57b64c767bc0c761d61f5f5b07da4f85f1ad08
112 lines
4.1 KiB
Python
112 lines
4.1 KiB
Python
# (c) 2017, Jean-Philippe Evrard <jean-philippe.evrard@rackspace.co.uk>
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#
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# Copyright 2017, Rackspace US, Inc.
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#
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# 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 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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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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try:
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from __main__ import display
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except ImportError:
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from ansible.utils.display import Display
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display = Display()
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from ansible.parsing.dataloader import DataLoader
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from ansible.utils.vars import merge_hash
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from ansible import __version__ as ansible_version
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from distutils.version import LooseVersion
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def vars_files_loading(folder, name, matched=False):
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""" Load files recursively and sort them
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"""
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files = []
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try:
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candidates = [os.path.join(folder, f) for f in os.listdir(folder)]
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except OSError:
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return files
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for f in candidates:
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if (os.path.basename(f) in [name, name + ".yml", name + ".yaml"]
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or matched):
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if os.path.isfile(f):
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files.append(f)
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elif os.path.isdir(f):
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files.extend(vars_files_loading(f, name, matched=True))
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return sorted(files)
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if LooseVersion(ansible_version) < LooseVersion('2.4.0'):
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class VarsModule(object):
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"""
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Loads variables for groups and/or hosts
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"""
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def __init__(self, inventory):
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""" constructor """
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self.inventory = inventory
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self.inventory_basedir = inventory.basedir()
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self.grp_vars_string = os.environ.get(
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'GROUP_VARS_PATH', '/etc/openstack_deploy/group_vars')
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self.grp_vars_folders = self.grp_vars_string.split(":")
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self.host_vars_string = os.environ.get(
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'HOST_VARS_PATH', '/etc/openstack_deploy/host_vars')
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self.host_vars_folders = self.host_vars_string.split(":")
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def run(self, host, vault_password=None):
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""" This function is only used for backwards compatibility with ansible1.
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We don't need to handle this case.
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"""
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return {}
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def get_host_vars(self, host, vault_password=None):
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""" Get host specific variables. """
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resulting_host_vars = {}
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var_files = []
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for host_var_folder in self.host_vars_folders:
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var_files.extend(vars_files_loading(host_var_folder, host.name))
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_dataloader = DataLoader()
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_dataloader.set_vault_password(vault_password)
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for filename in var_files:
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display.vvvvv(
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"Hostname {}: Loading var file {}".format(host.name, filename))
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data = _dataloader.load_from_file(filename)
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if data is not None:
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resulting_host_vars = merge_hash(resulting_host_vars, data)
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return resulting_host_vars
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def get_group_vars(self, group, vault_password=None):
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""" Get group specific variables. """
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resulting_group_vars = {}
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var_files = []
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for grp_var_folder in self.grp_vars_folders:
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var_files.extend(vars_files_loading(grp_var_folder, group.name))
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_dataloader = DataLoader()
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_dataloader.set_vault_password(vault_password)
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for filename in var_files:
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display.vvvvv(
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"Group {}: Loading var file {}".format(group.name, filename))
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data = _dataloader.load_from_file(filename)
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if data is not None:
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resulting_group_vars = merge_hash(resulting_group_vars, data)
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return resulting_group_vars
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