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# (c) 2014 Michael DeHaan, <michael@ansible.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.compat.six import iteritems, string_types
from ansible.errors import AnsibleParserError, AnsibleError
from ansible.playbook.attribute import Attribute, FieldAttribute
from ansible.playbook.base import Base
from ansible.playbook.helpers import load_list_of_roles
from ansible.playbook.role.include import RoleInclude
from ansible.playbook.role.requirement import RoleRequirement
__all__ = ['RoleMetadata']
class RoleMetadata(Base):
'''
This class wraps the parsing and validation of the optional metadata
within each Role (meta/main.yml).
'''
_allow_duplicates = FieldAttribute(isa='bool', default=False)
_dependencies = FieldAttribute(isa='list', default=[])
_galaxy_info = FieldAttribute(isa='GalaxyInfo')
def __init__(self, owner=None):
self._owner = owner
super(RoleMetadata, self).__init__()
@staticmethod
def load(data, owner, variable_manager=None, loader=None):
'''
Returns a new RoleMetadata object based on the datastructure passed in.
'''
if not isinstance(data, dict):
raise AnsibleParserError("the 'meta/main.yml' for role %s is not a dictionary" % owner.get_name())
m = RoleMetadata(owner=owner).load_data(data, variable_manager=variable_manager, loader=loader)
return m
def _load_dependencies(self, attr, ds):
'''
This is a helper loading function for the dependencies list,
which returns a list of RoleInclude objects
'''
roles = []
if ds:
if not isinstance(ds, list):
raise AnsibleParserError("Expected role dependencies to be a list.", obj=self._ds)
for role_def in ds:
if isinstance(role_def, string_types) or 'role' in role_def or 'name' in role_def:
roles.append(role_def)
continue
try:
# role_def is new style: { src: 'galaxy.role,version,name', other_vars: "here" }
def_parsed = RoleRequirement.role_yaml_parse(role_def)
if def_parsed.get('name'):
role_def['name'] = def_parsed['name']
roles.append(role_def)
except AnsibleError as exc:
raise AnsibleParserError(str(exc), obj=role_def)
current_role_path = None
if self._owner:
current_role_path = os.path.dirname(self._owner._role_path)
try:
return load_list_of_roles(roles, play=self._owner._play, current_role_path=current_role_path, variable_manager=self._variable_manager, loader=self._loader)
except AssertionError:
raise AnsibleParserError("A malformed list of role dependencies was encountered.", obj=self._ds)
def _load_galaxy_info(self, attr, ds):
'''
This is a helper loading function for the galaxy info entry
in the metadata, which returns a GalaxyInfo object rather than
a simple dictionary.
'''
return ds
def serialize(self):
return dict(
allow_duplicates = self._allow_duplicates,
dependencies = self._dependencies,
)
def deserialize(self, data):
setattr(self, 'allow_duplicates', data.get('allow_duplicates', False))
setattr(self, 'dependencies', data.get('dependencies', []))
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