updates to fail early for required executables that are not in PATH

daemon/core/__init__.py

@@ -1,41 +1,4 @@
-import json
 import logging.config
-import os
-import subprocess
-
-from core import constants
 
 # setup default null handler
 logging.getLogger(__name__).addHandler(logging.NullHandler())
-
-
-def load_logging_config(config_path=None):
-    """
-    Load CORE logging configuration file.
-
-    :param str config_path: path to logging config file,
-        when None defaults to /etc/core/logging.conf
-    :return: nothing
-    """
-    if not config_path:
-        config_path = os.path.join(constants.CORE_CONF_DIR, "logging.conf")
-    with open(config_path, "r") as log_config_file:
-        log_config = json.load(log_config_file)
-        logging.config.dictConfig(log_config)
-
-
-class CoreCommandError(subprocess.CalledProcessError):
-    """
-    Used when encountering internal CORE command errors.
-    """
-
-    def __str__(self):
-        return "Command(%s), Status(%s):\n%s" % (self.cmd, self.returncode, self.output)
-
-
-class CoreError(Exception):
-    """
-    Used for errors when dealing with CoreEmu and Sessions.
-    """
-
-    pass