112 lines
3.7 KiB
Python
112 lines
3.7 KiB
Python
import pathlib
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import logging
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from .utils import ensure_dir
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from .stackgroup import StackGroup
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from .jinja import read_config_file
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from .exceptions import InvalidProjectDir
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logger = logging.getLogger(__name__)
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class CloudBender(object):
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""" Config Class to handle recursive conf/* config tree """
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def __init__(self, root_path):
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self.root = pathlib.Path(root_path)
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self.sg = None
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self.all_stacks = []
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self.ctx = {
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"config_path": self.root.joinpath("config"),
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"template_path": self.root.joinpath("cloudformation"),
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"parameter_path": self.root.joinpath("parameters"),
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"artifact_paths": [self.root.joinpath("artifacts")]
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}
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if not self.ctx['config_path'].is_dir():
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raise InvalidProjectDir("Check '{0}' exists and is a valid CloudBender project folder.".format(self.ctx['config_path']))
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def read_config(self):
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"""Load the <path>/config.yaml, <path>/*.yaml as stacks, sub-folders are sub-groups """
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# Read top level config.yaml and extract CloudBender CTX
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_config = read_config_file(self.ctx['config_path'].joinpath('config.yaml'))
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if _config and _config.get('CloudBender'):
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self.ctx.update(_config.get('CloudBender'))
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# Make sure all paths are abs
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for k, v in self.ctx.items():
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if k in ['config_path', 'template_path', 'parameter_path', 'artifact_paths']:
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if isinstance(v, list):
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new_list = []
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for p in v:
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path = pathlib.Path(p)
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if not path.is_absolute():
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new_list.append(self.root.joinpath(path))
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else:
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new_list.append(path)
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self.ctx[k] = new_list
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elif isinstance(v, str):
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if not v.is_absolute():
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self.ctx[k] = self.root.joinpath(v)
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if k in ['template_path', 'parameter_path']:
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ensure_dir(self.ctx[k])
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self.sg = StackGroup(self.ctx['config_path'], self.ctx)
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self.sg.read_config()
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self.all_stacks = self.sg.get_stacks()
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def dump_config(self):
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logger.debug("<CloudBender: {}>".format(vars(self)))
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self.sg.dump_config()
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def clean(self):
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for s in self.all_stacks:
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s.delete_template_file()
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s.delete_parameter_file()
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def resolve_stacks(self, token):
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stacks = []
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# remove optional leading "config/" to allow bash path expansions
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if token.startswith("config/"):
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token = token[7:]
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# If path ends with yaml we look for stacks
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if token.endswith('.yaml'):
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stacks = self.sg.get_stacks(token, match_by='path')
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# otherwise assume we look for a group, if we find a group return all stacks below
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else:
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# Strip potential trailing slash
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token = token.rstrip('/')
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sg = self.sg.get_stackgroup(token, match_by='path')
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if sg:
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stacks = sg.get_stacks()
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return stacks
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def filter_stacks(self, filter_by, stacks=None):
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# filter_by is a dict { property, value }
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# if no group of stacks provided, look in all available
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if not stacks:
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stacks = self.all_stacks
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matching_stacks = []
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for s in stacks:
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match = True
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for p, v in filter_by.items():
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if not (hasattr(s, p) and getattr(s, p) == v):
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match = False
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break
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if match:
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matching_stacks.append(s)
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return matching_stacks
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