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config.py
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config.py
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# Copyright 2016 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import json
import logging
import os
import re
import shutil
import six
import tempfile
import yaml
import jinja2
from tripleo_common import constants
class Config(object):
def __init__(self, orchestration_client):
self.log = logging.getLogger(__name__ + ".Config")
self.client = orchestration_client
self.__server_id_data = None
def get_role_data(self, stack):
role_data = {}
for output in stack.to_dict().get('outputs', {}):
if output['output_key'] == 'RoleData':
for role in output['output_value']:
role_data[role] = output['output_value'][role]
return role_data
def get_role_config(self, stack):
role_data = {}
for output in stack.to_dict().get('outputs', {}):
if output['output_key'] == 'RoleConfig':
for role in output['output_value']:
role_data[role] = output['output_value'][role]
return role_data
def get_server_data(self, stack, role_names,
nested_depth=constants.NESTED_DEPTH):
servers = []
server_resource_types = [constants.SERVER_RESOURCE_TYPES % r
for r in role_names]
for server_resource_type in server_resource_types:
servers += self.client.resources.list(
stack,
nested_depth=nested_depth,
filters=dict(type=server_resource_type),
with_detail=True)
return servers
def get_deployment_data(self, stack,
nested_depth=constants.NESTED_DEPTH):
deployments = self.client.resources.list(
stack,
nested_depth=nested_depth,
filters=dict(name=constants.TRIPLEO_DEPLOYMENT_RESOURCE),
with_detail=True)
# Sort by creation time
deployments = sorted(deployments, key=lambda d: d.creation_time)
return deployments
def get_server_id_data(self, stack):
for output in stack.to_dict().get('outputs', {}):
if output['output_key'] == 'ServerIdData':
return output['output_value']['server_ids']
def get_role_from_server_id(self, stack, server_id):
if self.__server_id_data is None:
self.__server_id_data = self.get_server_id_data(stack)
for k, v in self.__server_id_data.items():
if server_id in v:
return k
def get_config_dict(self, deployment):
if '/' in deployment.attributes['value']['deployment']:
deployment_stack_id = \
deployment.attributes['value']['deployment'].split('/')[-1]
deployment_resource_id = self.client.resources.get(
deployment_stack_id,
'TripleOSoftwareDeployment').physical_resource_id
else:
deployment_resource_id = \
deployment.attributes['value']['deployment']
deployment_rsrc = self.client.software_deployments.get(
deployment_resource_id)
config = self.client.software_configs.get(
deployment_rsrc.config_id)
return config.to_dict()
def get_jinja_env(self, tmp_path):
templates_path = os.path.join(
os.path.dirname(__file__), '..', 'templates')
self._mkdir(os.path.join(tmp_path, 'templates'))
env = jinja2.Environment(
loader=jinja2.FileSystemLoader(templates_path))
env.trim_blocks = True
return env, templates_path
@staticmethod
def _open_file(path):
return os.fdopen(os.open(path,
os.O_WRONLY | os.O_CREAT, 0o600),
'w')
def _step_tags_to_when(self, sorted_tasks):
for task in sorted_tasks:
tag = task.get('tags', '')
match = re.search('step([0-9]+)', tag)
if match:
step = match.group(1)
whenexpr = task.get('when', None)
if whenexpr:
# Handle when: foo and a list of when conditionals
if not isinstance(whenexpr, list):
whenexpr = [whenexpr]
for w in whenexpr:
when_exists = re.search('step|int == [0-9]', w)
if when_exists:
break
if when_exists:
# Skip to the next task,
# there is an existing 'step|int == N'
continue
whenexpr.append("step|int == %s" % step)
task['when'] = whenexpr
else:
task.update({"when": "step|int == %s" % step})
def _write_playbook_get_tasks(self, tasks, role, filepath):
playbook = []
sorted_tasks = sorted(tasks, key=lambda x: x.get('tags', None))
self._step_tags_to_when(sorted_tasks)
playbook.append({'name': '%s playbook' % role,
'hosts': role,
'tasks': sorted_tasks})
with self._open_file(filepath) as conf_file:
yaml.safe_dump(playbook, conf_file, default_flow_style=False)
return sorted_tasks
def _mkdir(self, dirname):
if not os.path.exists(dirname):
try:
os.mkdir(dirname, 0o700)
except OSError as e:
message = 'Failed to create: %s, error: %s' % (dirname,
str(e))
raise OSError(message)
def download_config(self, name, config_dir, config_type=None):
# Get the stack object
stack = self.client.stacks.get(name)
# Create config directory
self._mkdir(config_dir)
tmp_path = tempfile.mkdtemp(prefix='tripleo-',
suffix='-config',
dir=config_dir)
self.log.info("Generating configuration under the directory: "
"%s" % tmp_path)
# Get role data:
role_data = self.get_role_data(stack)
for role_name, role in six.iteritems(role_data):
role_path = os.path.join(tmp_path, role_name)
self._mkdir(role_path)
for config in config_type or role.keys():
if config in constants.EXTERNAL_TASKS:
# external tasks are collected globally, not per-role
continue
elif config == 'step_config':
filepath = os.path.join(role_path, 'step_config.pp')
with self._open_file(filepath) as step_config:
step_config.write('\n'.join(step for step in
role[config]
if step is not None))
else:
if 'upgrade_tasks' in config:
filepath = os.path.join(role_path, '%s_playbook.yaml' %
config)
data = self._write_playbook_get_tasks(
role[config], role_name, filepath)
else:
try:
data = role[config]
except KeyError as e:
message = 'Invalid key: %s, error: %s' % (config,
str(e))
raise KeyError(message)
filepath = os.path.join(role_path, '%s.yaml' % config)
with self._open_file(filepath) as conf_file:
yaml.safe_dump(data,
conf_file,
default_flow_style=False)
role_config = self.get_role_config(stack)
for config_name, config in six.iteritems(role_config):
conf_path = os.path.join(tmp_path, config_name + ".yaml")
with self._open_file(conf_path) as conf_file:
if isinstance(config, list) or isinstance(config, dict):
yaml.safe_dump(config, conf_file, default_flow_style=False)
else:
conf_file.write(config)
# Get deployment data
self.log.info("Getting server data from Heat...")
server_data = self.get_server_data(name, role_data.keys())
self.log.info("Getting deployment data from Heat...")
deployments_data = self.get_deployment_data(name)
# server_deployments is a dict of server name to a list of deployments
# (dicts) associated with that server
server_deployments = {}
# server_ids is a dict of server_name to server_id for easier lookup
server_ids = {}
# role_deployment_names is a dict of role names to deployment names for
# that role. The deployment names are futher separated in their own
# dict with keys of pre_deployment/post_deployment.
role_deployment_names = {}
for deployment in deployments_data:
server_id = deployment.attributes['value']['server']
server = [s for s in server_data
if s.physical_resource_id == server_id or
s.attributes.get('OS::stack_id') == server_id].pop()
server_ids.setdefault(server.attributes['name'], server_id)
config_dict = self.get_config_dict(deployment)
# deployment_name should be set via the name property on the
# Deployment resources in the templates, however, if it's None,
# default to the name of the parent_resource
deployment_name = deployment.attributes['value'].get(
'name', deployment.parent_resource)
config_dict['deployment_name'] = deployment_name
# reset deploy_server_id to the actual server_id since we have to
# use a dummy server resource to create the deployment in the
# templates
deploy_server_id_input = \
[i for i in config_dict['inputs']
if i['name'] == 'deploy_server_id'].pop()
deploy_server_id_input['value'] = server_id
server_deployments.setdefault(
server.attributes['name'],
[]).append(config_dict)
role = self.get_role_from_server_id(stack, server_id)
role_deployments = role_deployment_names.setdefault(role, {})
role_pre_deployments = role_deployments.setdefault(
'pre_deployments', [])
role_post_deployments = role_deployments.setdefault(
'post_deployments', [])
# special handling of deployments that are run post the deploy
# steps. We have to look these up based on the
# physical_resource_id, but these names should be consistent since
# they are consistent interfaces in our templates.
if 'ExtraConfigPost' in deployment.physical_resource_id or \
'PostConfig' in deployment.physical_resource_id:
if deployment_name not in role_post_deployments:
role_post_deployments.append(deployment_name)
else:
if deployment_name not in role_pre_deployments:
role_pre_deployments.append(deployment_name)
env, templates_path = self.get_jinja_env(tmp_path)
templates_dest = os.path.join(tmp_path, 'templates')
self._mkdir(templates_dest)
shutil.copyfile(os.path.join(templates_path, 'heat-config.j2'),
os.path.join(templates_dest, 'heat-config.j2'))
group_vars_dir = os.path.join(tmp_path, 'group_vars')
self._mkdir(group_vars_dir)
for server, deployments in server_deployments.items():
group_var_server_path = os.path.join(group_vars_dir, server)
group_var_server_template = env.get_template('group_var_server.j2')
for d in deployments:
if isinstance(d['config'], dict):
d['config'] = json.dumps(d['config'])
if d['group'] == 'hiera':
d['scalar'] = False
else:
d['scalar'] = True
with open(group_var_server_path, 'w') as f:
f.write(group_var_server_template.render(
deployments=deployments,
server_id=server_ids[server]))
for role, deployments in role_deployment_names.items():
group_var_role_path = os.path.join(group_vars_dir, role)
group_var_role_template = env.get_template('group_var_role.j2')
with open(group_var_role_path, 'w') as f:
f.write(group_var_role_template.render(
role=role,
pre_deployments=deployments['pre_deployments'],
post_deployments=deployments['post_deployments']))
for role_name, role in six.iteritems(role_data):
role_path = os.path.join(tmp_path, role_name)
shutil.copyfile(
os.path.join(templates_path, 'deployments.yaml'),
os.path.join(role_path, 'deployments.yaml'))
self.log.info("The TripleO configuration has been successfully "
"generated into: %s" % tmp_path)
return tmp_path