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import os
import yaml
from pkg_resources import resource_filename
PERSIST_SETTINGS = [
'ansible_ssh_user',
'ansible_config',
'ansible_log_path',
'variant',
'variant_version',
]
REQUIRED_FACTS = ['ip', 'public_ip', 'hostname', 'public_hostname']
class OOConfigFileError(Exception):
"""The provided config file path can't be read/written
"""
pass
class OOConfigInvalidHostError(Exception):
""" Host in config is missing both ip and hostname. """
pass
class Host(object):
""" A system we will or have installed OpenShift on. """
def __init__(self, **kwargs):
self.ip = kwargs.get('ip', None)
self.hostname = kwargs.get('hostname', None)
self.public_ip = kwargs.get('public_ip', None)
self.public_hostname = kwargs.get('public_hostname', None)
# Should this host run as an OpenShift master:
self.master = kwargs.get('master', False)
# Should this host run as an OpenShift node:
self.node = kwargs.get('node', False)
self.containerized = kwargs.get('containerized', False)
if self.ip is None and self.hostname is None:
raise OOConfigInvalidHostError("You must specify either 'ip' or 'hostname'")
if self.master is False and self.node is False:
raise OOConfigInvalidHostError(
"You must specify each host as either a master or a node.")
# Hosts can be specified with an ip, hostname, or both. However we need
# something authoritative we can connect to and refer to the host by.
# Preference given to the IP if specified as this is more specific.
# We know one must be set by this point.
self.name = self.ip if self.ip is not None else self.hostname
def __str__(self):
return self.name
def __repr__(self):
return self.name
def to_dict(self):
""" Used when exporting to yaml. """
d = {}
for prop in ['ip', 'hostname', 'public_ip', 'public_hostname',
'master', 'node', 'containerized']:
# If the property is defined (not None or False), export it:
if getattr(self, prop):
d[prop] = getattr(self, prop)
return d
class OOConfig(object):
new_config = True
default_dir = os.path.normpath(
os.environ.get('XDG_CONFIG_HOME',
os.environ['HOME'] + '/.config/') + '/openshift/')
default_file = '/installer.cfg.yml'
def __init__(self, config_path):
if config_path:
self.config_path = os.path.normpath(config_path)
else:
self.config_path = os.path.normpath(self.default_dir +
self.default_file)
self.settings = {}
self.read_config()
self.set_defaults()
def read_config(self, is_new=False):
self.hosts = []
try:
new_settings = None
if os.path.exists(self.config_path):
cfgfile = open(self.config_path, 'r')
new_settings = yaml.safe_load(cfgfile.read())
cfgfile.close()
if new_settings:
self.settings = new_settings
# Parse the hosts into DTO objects:
if 'hosts' in self.settings:
for host in self.settings['hosts']:
self.hosts.append(Host(**host))
# Watchout for the variant_version coming in as a float:
if 'variant_version' in self.settings:
self.settings['variant_version'] = \
str(self.settings['variant_version'])
except IOError, ferr:
raise OOConfigFileError('Cannot open config file "{}": {}'.format(ferr.filename,
ferr.strerror))
except yaml.scanner.ScannerError:
raise OOConfigFileError('Config file "{}" is not a valid YAML document'.format(self.config_path))
self.new_config = is_new
def set_defaults(self):
if 'ansible_inventory_directory' not in self.settings:
self.settings['ansible_inventory_directory'] = \
self._default_ansible_inv_dir()
if not os.path.exists(self.settings['ansible_inventory_directory']):
os.makedirs(self.settings['ansible_inventory_directory'])
if 'ansible_plugins_directory' not in self.settings:
self.settings['ansible_plugins_directory'] = resource_filename(__name__, 'ansible_plugins')
if 'ansible_callback_facts_yaml' not in self.settings:
self.settings['ansible_callback_facts_yaml'] = '{}/callback_facts.yaml'.format(self.settings['ansible_inventory_directory'])
if 'ansible_ssh_user' not in self.settings:
self.settings['ansible_ssh_user'] = ''
self.settings['ansible_inventory_path'] = '{}/hosts'.format(self.settings['ansible_inventory_directory'])
# clean up any empty sets
for setting in self.settings.keys():
if not self.settings[setting]:
self.settings.pop(setting)
def _default_ansible_inv_dir(self):
return os.path.normpath(
os.path.dirname(self.config_path) + "/.ansible")
def calc_missing_facts(self):
"""
Determine which host facts are not defined in the config.
Returns a hash of host to a list of the missing facts.
"""
result = {}
for host in self.hosts:
missing_facts = []
for required_fact in REQUIRED_FACTS:
if not getattr(host, required_fact):
missing_facts.append(required_fact)
if len(missing_facts) > 0:
result[host.name] = missing_facts
return result
def save_to_disk(self):
out_file = open(self.config_path, 'w')
out_file.write(self.yaml())
out_file.close()
def persist_settings(self):
p_settings = {}
for setting in PERSIST_SETTINGS:
if setting in self.settings and self.settings[setting]:
p_settings[setting] = self.settings[setting]
p_settings['hosts'] = []
for host in self.hosts:
p_settings['hosts'].append(host.to_dict())
if self.settings['ansible_inventory_directory'] != \
self._default_ansible_inv_dir():
p_settings['ansible_inventory_directory'] = \
self.settings['ansible_inventory_directory']
return p_settings
def yaml(self):
return yaml.safe_dump(self.persist_settings(), default_flow_style=False)
def __str__(self):
return self.yaml()
def get_host(self, name):
for host in self.hosts:
if host.name == name:
return host
return None
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