112 lines
3.9 KiB
Python
112 lines
3.9 KiB
Python
import json
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from pathlib import Path
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import logging
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from iottb import definitions
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logger = logging.getLogger(__name__)
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DB_NAME = 'iottb.db'
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class IottbConfig:
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""" Class to handle operations on the testbed configuration.
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TODO: Add instead of overwrite Database locations when initializing if a location with valid db
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exists.
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"""
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@staticmethod
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def warn():
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logger.warning(f'DatabaseLocations are DatabaseLocationMap in the class {__name__}')
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def __init__(self, cfg_file=definitions.CFG_FILE_PATH):
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logger.info('Initializing Config object')
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IottbConfig.warn()
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self.cfg_file = Path(cfg_file)
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self.default_database = None
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self.default_path = None
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self.DatabaseLocationMap = {}
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self.load_config()
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def create_default_config(self):
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"""Create default iottb config file."""
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logger.info(f'Creating default config file at {self.cfg_file}')
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self.default_database = DB_NAME
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self.default_path = str(Path.home() / DB_NAME)
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self.DatabaseLocationMap = {
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DB_NAME: self.default_path
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}
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defaults = {
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'DefaultDatabase': self.default_database,
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'DefaultDatabasePath': self.default_path,
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'DatabaseLocations': self.DatabaseLocationMap
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}
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try:
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self.cfg_file.parent.mkdir(parents=True, exist_ok=True)
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with self.cfg_file.open('w') as config_file:
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json.dump(defaults, config_file, indent=4)
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except IOError as e:
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logger.error(f"Failed to create default configuration file at {self.cfg_file}: {e}")
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raise RuntimeError(f"Failed to create configuration file: {e}") from e
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def load_config(self):
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"""Loads or creates default configuration from given file path."""
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logger.info('Loading configuration file')
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if not self.cfg_file.is_file():
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logger.info('Config file does not exist.')
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self.create_default_config()
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else:
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logger.info('Config file exists, opening.')
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with self.cfg_file.open('r') as config_file:
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data = json.load(config_file)
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self.default_database = data.get('DefaultDatabase')
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self.default_path = data.get('DefaultDatabasePath')
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self.DatabaseLocationMap = data.get('DatabaseLocations', {})
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def save_config(self):
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"""Save the current configuration to the config file."""
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data = {
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'DefaultDatabase': self.default_database,
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'DefaultDatabasePath': self.default_path,
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'DatabaseLocations': self.DatabaseLocationMap
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}
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try:
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with self.cfg_file.open('w') as config_file:
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json.dump(data, config_file, indent=4)
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except IOError as e:
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logger.error(f"Failed to save configuration file at {self.cfg_file}: {e}")
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raise RuntimeError(f"Failed to save configuration file: {e}") from e
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def set_default_database(self, name, path):
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"""Set the default database and its path."""
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self.default_database = name
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self.default_path = path
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self.DatabaseLocationMap[name] = path
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def get_database_location(self, name):
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"""Get the location of a specific database."""
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return self.DatabaseLocationMap.get(name)
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def set_database_location(self, name, path):
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"""Set the location for a database."""
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self.DatabaseLocationMap[name] = path
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def get_known_databases(self):
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"""Get the set of known databases"""
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logger.info(f'Getting known databases.')
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return self.DatabaseLocationMap.keys()
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def get_know_database_paths(self):
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"""Get the paths of all known databases"""
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logger.info(f'Getting known database paths.')
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return self.DatabaseLocationMap.values()
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# TODO: Know issue:
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class Database:
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pass
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