From 655a783d5a0ef2ddadcf119793cd34513a45fe27 Mon Sep 17 00:00:00 2001 From: Brian Lamar Date: Thu, 23 Jun 2011 21:31:00 -0400 Subject: Created Bootstrapper to handle Nova bootstrapping logic. --- nova/utils.py | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'nova/utils.py') diff --git a/nova/utils.py b/nova/utils.py index a9b0f3128..a6b8d4cbe 100644 --- a/nova/utils.py +++ b/nova/utils.py @@ -743,3 +743,40 @@ def is_uuid_like(val): if not isinstance(val, basestring): return False return (len(val) == 36) and (val.count('-') == 4) + + +class Bootstrapper(object): + """Provides environment bootstrapping capabilities for entry points.""" + + @staticmethod + def bootstrap_binary(argv): + """Initialize the Nova environment using command line arguments.""" + Bootstrapper.setup_flags(argv) + Bootstrapper.setup_logging() + Bootstrapper.log_flags() + + @staticmethod + def setup_logging(): + """Initialize logging and log a message indicating the Nova version.""" + logging.setup() + logging.audit(_("Nova Version (%s)") % + version.version_string_with_vcs()) + + @staticmethod + def setup_flags(input_flags): + """Initialize flags, load flag file, and print help if needed.""" + default_flagfile(args=input_flags) + FLAGS(input_flags or []) + flags.DEFINE_flag(flags.HelpFlag()) + flags.DEFINE_flag(flags.HelpshortFlag()) + flags.DEFINE_flag(flags.HelpXMLFlag()) + FLAGS.ParseNewFlags() + + @staticmethod + def log_flags(): + """Log the list of all active flags being used.""" + logging.audit(_("Currently active flags:")) + for key in FLAGS: + value = FLAGS.get(key, None) + logging.audit(_("%(key)s : %(value)s" % locals())) + -- cgit