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community.general/lib/ansible/playbook/helpers.py

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Python

# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
from ansible.errors import AnsibleParserError
from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject, AnsibleSequence
def load_list_of_blocks(ds, play, parent_block=None, role=None, task_include=None, use_handlers=False, variable_manager=None, loader=None):
'''
Given a list of mixed task/block data (parsed from YAML),
return a list of Block() objects, where implicit blocks
are created for each bare Task.
'''
# we import here to prevent a circular dependency with imports
from ansible.playbook.block import Block
assert isinstance(ds, (list, type(None)))
block_list = []
if ds:
for block in ds:
b = Block.load(
block,
play=play,
parent_block=parent_block,
role=role,
task_include=task_include,
use_handlers=use_handlers,
variable_manager=variable_manager,
loader=loader
)
# Implicit blocks are created by bare tasks listed in a play without
# an explicit block statement. If we have two implicit blocks in a row,
# squash them down to a single block to save processing time later.
if b._implicit and len(block_list) > 0 and block_list[-1]._implicit:
for t in b.block:
t._block = block_list[-1]
block_list[-1].block.extend(b.block)
else:
block_list.append(b)
return block_list
def load_list_of_tasks(ds, play, block=None, role=None, task_include=None, use_handlers=False, variable_manager=None, loader=None):
'''
Given a list of task datastructures (parsed from YAML),
return a list of Task() or TaskInclude() objects.
'''
# we import here to prevent a circular dependency with imports
from ansible.playbook.block import Block
from ansible.playbook.handler import Handler
from ansible.playbook.task import Task
assert isinstance(ds, list)
task_list = []
for task in ds:
assert isinstance(task, dict)
if 'block' in task:
t = Block.load(
task,
play=play,
parent_block=block,
role=role,
task_include=task_include,
use_handlers=use_handlers,
variable_manager=variable_manager,
loader=loader,
)
else:
if use_handlers:
t = Handler.load(task, block=block, role=role, task_include=task_include, variable_manager=variable_manager, loader=loader)
else:
t = Task.load(task, block=block, role=role, task_include=task_include, variable_manager=variable_manager, loader=loader)
task_list.append(t)
return task_list
def load_list_of_roles(ds, play, current_role_path=None, variable_manager=None, loader=None):
'''
Loads and returns a list of RoleInclude objects from the datastructure
list of role definitions
'''
# we import here to prevent a circular dependency with imports
from ansible.playbook.role.include import RoleInclude
assert isinstance(ds, list)
roles = []
for role_def in ds:
i = RoleInclude.load(role_def, play=play, current_role_path=current_role_path, variable_manager=variable_manager, loader=loader)
roles.append(i)
return roles