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243 lines
8.9 KiB
Python
243 lines
8.9 KiB
Python
# (c) 2017, Ansible by Red Hat, inc
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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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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import sys
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import tempfile
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import yaml
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from ansible.config.data import ConfigData, Setting
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from ansible.errors import AnsibleOptionsError, AnsibleError
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from ansible.module_utils.six import string_types
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from ansible.module_utils.six.moves import configparser
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from ansible.module_utils._text import to_text, to_bytes, to_native
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from ansible.parsing.quoting import unquote
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from ansible.utils.path import unfrackpath
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from ansible.utils.path import makedirs_safe
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def resolve_path(path):
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if '{{CWD}}' in path: # allow users to force CWD using 'magic' {{CWD}}
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path = path.replace('{{CWD}}', os.getcwd())
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return unfrackpath(path, follow=False)
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def get_ini_config(p, entries):
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''' returns the value of last ini entry found '''
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value = None
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if p is not None:
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for entry in entries:
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try:
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value = p.get(entry.get('section','defaults'), entry.get('key',''), raw=True)
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except:
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pass
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return value
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class ConfigManager(object):
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def __init__(self, conf_file=None):
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self.data = ConfigData()
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#FIXME: make dynamic?
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bconfig_def = to_bytes('%s/data/config.yml' % os.path.dirname(__file__))
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if os.path.exists(bconfig_def):
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with open(bconfig_def, 'rb') as config_def:
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self.initial_defs = yaml.safe_load(config_def)
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else:
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raise AnsibleError("Missing base configuration definition file (bad install?): %s" % to_native(bconfig_def))
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ftype = None
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if conf_file is None:
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# set config using ini
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conf_file = self.find_ini_config_file()
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ftype = 'ini'
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else:
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ext = os.path.splitext(conf_file)[-1]
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if ext in ('.ini', '.cfg'):
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ftype = 'ini'
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elif ext in ('.yaml', '.yml'):
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ftype = 'yaml'
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else:
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raise AnsibleOptionsError("Unsupported configuration file extension: \n{0}".format(ext))
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self.parse_config(conf_file, ftype)
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def parse_config(self, cfile, ftype):
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# TODO: take list of files with merge/nomerge
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parser = None
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if ftype == 'ini':
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parser = configparser.ConfigParser()
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try:
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parser.read(cfile)
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except configparser.Error as e:
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raise AnsibleOptionsError("Error reading config file: \n{0}".format(e))
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elif ftype == 'yaml':
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with open(cfile, 'rb') as config_stream:
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parser = yaml.safe_load(config_stream)
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else:
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raise AnsibleOptionsError("Unsupported configuration file type: \n{0}".format(ftype))
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self.update_config(cfile, self.initial_defs, parser, ftype)
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def update_config(self, configfile, defs, parser, ftype):
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# update the constant for config file
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self.data.update_setting(Setting('CONFIG_FILE', configfile, ''))
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origin = None
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# env and config defs can have several entries, ordered in list from lowest to highest precedence
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for config in self.initial_defs:
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value = None
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# env vars are highest precedence
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if defs[config].get('env'):
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try:
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for env_var in defs[config]['env']:
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env_value = os.environ.get(env_var.get('name'), None)
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if env_value is not None: # only set if env var is defined
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value = env_value
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origin = 'env: %s' % env_var.get('name')
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except:
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sys.stderr.write("Error while loading environment configs for %s\n" % config)
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# try config file entries next
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if value is None and defs[config].get(ftype):
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if ftype == 'ini':
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# load from ini config
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try:
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value = get_ini_config(parser, defs[config]['ini'])
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origin = configfile
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except Exception as e:
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sys.stderr.write("Error while loading ini config %s: %s" % (configfile, str(e)))
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elif ftype == 'yaml':
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# FIXME: break down key from defs (. notation???)
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key = 'name'
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value = parser.get(key)
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origin = configfile
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# set default if we got here w/o a value
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if value is None:
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value = defs[config].get('default')
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origin = 'default'
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# ensure correct type
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try:
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value = self.ensure_type(value, defs[config].get('value_type'))
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except:
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sys.stderr.write("Unable to set correct type for %s, skipping" % config)
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continue
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# set the constant
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self.data.update_setting(Setting(config, value, origin))
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def find_ini_config_file(self):
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''' Load Config File order(first found is used): ENV, CWD, HOME, /etc/ansible '''
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path0 = os.getenv("ANSIBLE_CONFIG", None)
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if path0 is not None:
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path0 = unfrackpath(path0, follow=False)
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if os.path.isdir(path0):
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path0 += "/ansible.cfg"
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try:
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path1 = os.getcwd() + "/ansible.cfg"
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except OSError:
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path1 = None
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path2 = unfrackpath("~/.ansible.cfg", follow=False)
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path3 = "/etc/ansible/ansible.cfg"
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for path in [path0, path1, path2, path3]:
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if path is not None and os.path.exists(path):
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break
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else:
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path = None
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return path
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def make_boolean(self, value):
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ret = value
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if not isinstance(value, bool):
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if value is None:
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ret = False
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ret = (to_text(value).lower() in self.data.BOOL_TRUE)
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return ret
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def ensure_type(self, value, value_type):
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''' return a configuration variable with casting
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:arg value: The value to ensure correct typing of
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:kwarg value_type: The type of the value. This can be any of the following strings:
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:boolean: sets the value to a True or False value
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:integer: Sets the value to an integer or raises a ValueType error
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:float: Sets the value to a float or raises a ValueType error
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:list: Treats the value as a comma separated list. Split the value
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and return it as a python list.
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:none: Sets the value to None
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:path: Expands any environment variables and tilde's in the value.
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:tmp_path: Create a unique temporary directory inside of the directory
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specified by value and return its path.
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:pathlist: Treat the value as a typical PATH string. (On POSIX, this
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means colon separated strings.) Split the value and then expand
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each part for environment variables and tildes.
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'''
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if value_type == 'boolean':
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value = self.make_boolean(value)
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elif value:
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if value_type == 'integer':
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value = int(value)
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elif value_type == 'float':
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value = float(value)
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elif value_type == 'list':
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if isinstance(value, string_types):
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value = [x.strip() for x in value.split(',')]
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elif value_type == 'none':
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if value == "None":
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value = None
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elif value_type == 'path':
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value = resolve_path(value)
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elif value_type == 'tmppath':
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value = resolve_path(value)
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if not os.path.exists(value):
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makedirs_safe(value, 0o700)
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prefix = 'ansible-local-%s' % os.getpid()
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value = tempfile.mkdtemp(prefix=prefix, dir=value)
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elif value_type == 'pathlist':
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if isinstance(value, string_types):
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value = [resolve_path(x) for x in value.split(os.pathsep)]
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elif isinstance(value, string_types):
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value = unquote(value)
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return to_text(value, errors='surrogate_or_strict', nonstring='passthru')
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