mirror of https://github.com/ansible/ansible.git
Playbook refactoring -- work in progress.
Michael DeHaan
12 years ago
parent
cf9ddf3a30
commit
b9b53d1941
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#############################################
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from ansible import utils
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from ansible import errors
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from ansible.playbook.task import Task
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import shlex
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import os
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class Play(object):
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__slots__ = [
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'hosts', 'name', 'vars', 'vars_prompt', 'vars_files', 'handlers', 'remote_user', 'remote_port',
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'sudo', 'sudo_user', 'transport', 'playbook', '_ds', '_handlers', '_tasks'
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]
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# *************************************************
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def __init__(self, playbook, ds):
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self._ds = ds
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self.playbook = playbook
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self.hosts = ds.get('hosts', None)
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self.hosts = utils.template(self.hosts, self.playbook.extra_vars, {})
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self.name = ds.get('name', self.hosts)
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self.vars = ds.get('vars', {})
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self.vars_files = ds.get('vars_files', [])
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self.vars_prompt = ds.get('vars_prompt', {})
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self.vars = self._get_vars(self.playbook.basedir)
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self._tasks = ds.get('tasks', [])
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self._handlers = ds.get('handlers', [])
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self.remote_user = ds.get('user', self.playbook.remote_user)
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self.remote_port = ds.get('port', self.playbook.remote_port)
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self.sudo = ds.get('sudo', self.playbook.sudo)
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self.sudo_user = ds.get('sudo_user', self.playbook.sudo_user)
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self.transport = ds.get('connection', self.playbook.transport)
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self._tasks = self._load_tasks(self._ds, 'tasks')
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self._handlers = self._load_tasks(self._ds, 'handlers')
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if self.hosts is None:
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raise errors.AnsibleError('hosts declaration is required')
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if isinstance(self.hosts, list):
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self.hosts = ';'.join(self.hosts)
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if self.sudo_user != 'root':
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self.sudo = True
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# *************************************************
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def _load_tasks(self, ds, keyname):
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''' handle task and handler include statements '''
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items = ds.get(keyname, [])
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results = []
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for x in items:
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if 'include' in x:
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task_vars = self.vars.copy()
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tokens = shlex.split(x['include'])
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for t in tokens[1:]:
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(k,v) = t.split("=", 1)
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task_vars[k]=v
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include_file = tokens[0]
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data = utils.parse_yaml_from_file(utils.path_dwim(self.playbook.basedir, include_file))
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for y in data:
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t = Task(self,y)
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# TODO: rename this to just 'vars'
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t.module_vars = self.vars.copy()
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t.module_vars.update(task_vars)
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results.append(t)
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elif type(x) == dict:
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results.append(Task(self, x))
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else:
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raise Exception("unexpected task type")
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return results
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# *************************************************
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def handlers(self):
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return self._handlers
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def tasks(self):
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return self._tasks
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# *************************************************
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def _get_vars(self, dirname):
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''' load the vars section from a play '''
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if self.vars is None:
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self.vars = {}
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if type(self.vars) not in [dict, list]:
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raise errors.AnsibleError("'vars' section must contain only key/value pairs")
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vars = self.playbook.global_vars
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# translate a list of vars into a dict
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if type(self.vars) == list:
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for item in self.vars:
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k, v = item.items()[0]
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vars[k] = v
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else:
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vars.update(self.vars)
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if type(self.vars_prompt) != dict:
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raise errors.AnsibleError("'vars_prompt' section must contain only key/value pairs")
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for vname in self.vars_prompt:
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# TODO: make this prompt one line and consider double entry
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vars[vname] = self.callbacks.on_vars_prompt(vname)
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results = self.playbook.extra_vars.copy()
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results.update(vars)
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return results
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# *************************************************
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def update_vars_files(self, hosts):
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''' calculate vars_files, which requires that setup runs first so ansible facts can be mixed in '''
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for h in hosts:
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self.update_vars_files_for_host(h)
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# *************************************************
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def update_vars_files_for_host(self, host):
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if not host in self.playbook.SETUP_CACHE:
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# no need to process failed hosts or hosts not in this play
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return
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for filename in self.vars_files:
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# TODO: maybe have to template the path here...
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if type(filename) == list:
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# loop over all filenames, loading the first one, and failing if # none found
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found = False
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sequence = []
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for real_filename in filename:
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filename2 = utils.template(real_filename, self.playbook.SETUP_CACHE[host])
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filename2 = utils.template(filename2, self.vars)
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filename2 = utils.path_dwim(self.playbook.basedir, filename2)
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sequence.append(filename2)
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if os.path.exists(filename2):
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found = True
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data = utils.parse_yaml_from_file(filename2)
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self.playbook.SETUP_CACHE[host].update(data)
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self.playbook.callbacks.on_import_for_host(host, filename2)
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break
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else:
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self.playbook.callbacks.on_not_import_for_host(host, filename2)
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if not found:
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raise errors.AnsibleError(
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"%s: FATAL, no files matched for vars_files import sequence: %s" % (host, sequence)
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)
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else:
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fpath = utils.path_dwim(self.playbook.basedir, utils.template(filename, self.vars))
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new_vars = utils.parse_yaml_from_file(fpath)
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self.playbook.SETUP_CACHE[host].update(new_vars)
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@ -0,0 +1,69 @@
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#############################################
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#import ansible.inventory
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#import ansible.runner
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#import ansible.constants as C
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#from ansible import utils
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#from ansible import errors
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class Task(object):
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__slots__ = [
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'name', 'action', 'only_if', 'async_seconds', 'async_poll_interval',
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'notify', 'module_name', 'module_args', 'module_vars', 'play', 'notified_by',
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]
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def __init__(self, play, ds):
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self.play = play
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# FIXME: error handling on invalid fields
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# action...
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self.name = ds.get('name', None)
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self.action = ds.get('action', '')
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self.notified_by = []
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if self.name is None:
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self.name = self.action
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self.only_if = ds.get('only_if', 'True')
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self.async_seconds = int(ds.get('async', 0)) # not async by default
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self.async_poll_interval = int(ds.get('poll', 10)) # default poll = 10 seconds
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self.notify = ds.get('notify', [])
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if isinstance(self.notify, basestring):
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self.notify = [ self.notify ]
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tokens = self.action.split(None, 1)
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if len(tokens) < 1:
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# FIXME: better error handling
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raise Exception("invalid action in task: %s" % ds)
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self.module_name = tokens[0]
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self.module_args = ''
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if len(tokens) > 1:
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self.module_args = tokens[1]
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# include task specific vars
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self.module_vars = ds.get('vars', {})
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if 'first_available_file' in ds:
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self.module_vars['first_available_file'] = ds.get('first_available_file')
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