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# coding: utf-8 |
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"""Simple Config Reader.""" |
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from collections.abc import Iterable |
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from os import path |
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from sys import stderr |
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import anyconfig |
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from jsonschema.exceptions import _Error |
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from stakkr.file_utils import get_file, find_project_dir |
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class Config: |
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""" |
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Parser of Stakkr. |
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Set default values and validate stakkr.yml with specs |
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""" |
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def __init__(self, config_file: str): |
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""" |
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Build list of files to validate a config, set default values |
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Then the given config file |
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""" |
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self.config_file, self.project_dir = get_config_and_project_dir(config_file) |
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self._build_config_files_list() |
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self._build_config_schemas_list() |
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self.error = '' |
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def display_errors(self): |
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"""Display errors in STDOUT.""" |
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from click import style |
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msg = 'Failed validating config (' |
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msg += ', '.join(self.config_files) |
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msg += '):\n - {}\n'.format(self.error) |
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stderr.write(style(msg, fg='red')) |
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def read(self): |
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""" |
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Parse the configs and validate it. |
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It could be either local or from a local services |
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(first local then packages by alphabetical order). |
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""" |
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schema = anyconfig.multi_load(self.spec_files) |
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config = anyconfig.multi_load(self.config_files) |
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# Make sure the compiled configuration is valid |
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try: |
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anyconfig.validate(config, schema, safe=False) |
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except _Error as error: |
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self.error = '{} ({})'.format(error.message, ' -> '.join(map(str, error.path))) |
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return False |
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config['project_dir'] = path.realpath(path.dirname(self.config_file)) |
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if config['project_name'] == '': |
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config['project_name'] = path.basename(config['project_dir']) |
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return config |
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def _build_config_files_list(self): |
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self.config_files = [ |
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# Stakkr default config |
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get_file('static', 'config_default.yml'), |
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'{}/services/*/config_default.yml'.format(self.project_dir)] |
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# Stakkr main config file finally with user's values |
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self.config_files += [self.config_file] |
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def _build_config_schemas_list(self): |
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self.spec_files = [ |
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# Stakkr config validation |
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get_file('static', 'config_schema.yml'), |
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'{}/services/*/config_schema.yml'.format(self.project_dir)] |
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def get_config_and_project_dir(config_file: str): |
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"""Guess config file name and project dir""" |
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if config_file is not None: |
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config_file = path.abspath(config_file) |
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project_dir = path.dirname(config_file) |
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else: |
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project_dir = find_project_dir() |
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config_file = '{}/stakkr.yml'.format(project_dir) |
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return config_file, project_dir |
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stakkr-org /
stakkr
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