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# (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/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
from ansible import constants as C
from ansible.errors import AnsibleParserError
from ansible.module_utils._text import to_text, to_native
from ansible.playbook.play import Play
from ansible.playbook.playbook_include import PlaybookInclude
from ansible.plugins.loader import add_all_plugin_dirs
from ansible.utils.display import Display
from ansible.utils.path import unfrackpath
display = Display()
__all__ = ['Playbook']
class Playbook:
def __init__(self, loader):
# Entries in the datastructure of a playbook may
# be either a play or an include statement
self._entries = []
self._basedir = to_text(os.getcwd(), errors='surrogate_or_strict')
self._loader = loader
self._file_name = None
@staticmethod
def load(file_name, variable_manager=None, loader=None):
pb = Playbook(loader=loader)
pb._load_playbook_data(file_name=file_name, variable_manager=variable_manager)
return pb
def _load_playbook_data(self, file_name, variable_manager, vars=None):
if os.path.isabs(file_name):
self._basedir = os.path.dirname(file_name)
else:
self._basedir = os.path.normpath(os.path.join(self._basedir, os.path.dirname(file_name)))
# set the loaders basedir
cur_basedir = self._loader.get_basedir()
self._loader.set_basedir(self._basedir)
add_all_plugin_dirs(self._basedir)
self._file_name = file_name
try:
ds = self._loader.load_from_file(os.path.basename(file_name))
except UnicodeDecodeError as e:
raise AnsibleParserError("Could not read playbook (%s) due to encoding issues: %s" % (file_name, to_native(e)))
# check for errors and restore the basedir in case this error is caught and handled
if ds is None:
self._loader.set_basedir(cur_basedir)
raise AnsibleParserError("Empty playbook, nothing to do: %s" % unfrackpath(file_name), obj=ds)
elif not isinstance(ds, list):
self._loader.set_basedir(cur_basedir)
raise AnsibleParserError("A playbook must be a list of plays, got a %s instead: %s" % (type(ds), unfrackpath(file_name)), obj=ds)
elif not ds:
self._loader.set_basedir(cur_basedir)
raise AnsibleParserError("A playbook must contain at least one play: %s" % unfrackpath(file_name))
# Parse the playbook entries. For plays, we simply parse them
# using the Play() object, and includes are parsed using the
# PlaybookInclude() object
for entry in ds:
if not isinstance(entry, dict):
# restore the basedir in case this error is caught and handled
self._loader.set_basedir(cur_basedir)
raise AnsibleParserError("playbook entries must be either valid plays or 'import_playbook' statements", obj=entry)
if any(action in entry for action in C._ACTION_IMPORT_PLAYBOOK):
pb = PlaybookInclude.load(entry, basedir=self._basedir, variable_manager=variable_manager, loader=self._loader)
if pb is not None:
self._entries.extend(pb._entries)
else:
which = entry
for k in C._ACTION_IMPORT_PLAYBOOK:
if k in entry:
which = entry[k]
break
display.display("skipping playbook '%s' due to conditional test failure" % which, color=C.COLOR_SKIP)
else:
entry_obj = Play.load(entry, variable_manager=variable_manager, loader=self._loader, vars=vars)
self._entries.append(entry_obj)
# we're done, so restore the old basedir in the loader
self._loader.set_basedir(cur_basedir)
def get_loader(self):
return self._loader
def get_plays(self):
return self._entries[:]
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