def main(args):
config_filename = args.config_filename
debug = args.debug
skip_pid_check = args.skip_pid_check
first_time = True
old_server_address = None
sock = None
while 1:
# This is the main loop for the flup server.
# Why is it a loop? A SIGHUP sent to the server
# will shut down flup then reread the configuration
# file, reload the extension modules, and start
# the flup server again.
try:
settings, config = read_config.read_config(config_filename)
except read_config.Error, err:
logger.fatal(str(err))
if first_time:
raise SystemExit("Cannot start Akara. Exiting.")
else:
raise SystemExit("Cannot restart Akara. Exiting.")
akara.raw_config = config
# Establish the global configuration module
set_global_config(settings)
# In debug mode (-X), display all log messages.
# Otherwise, use the configuration level
if debug:
logger.setLevel(logging.DEBUG)
else:
logger.setLevel(settings["log_level"])
# Open this now, so any errors can be reported
try:
logger_config.set_logfile(settings["error_log"])
except IOError, err:
# Only give the 'akara setup' text here because it's where
# we get to with an empty/nonexistant configuration file.
logger.fatal("""\
Could not open the Akara error log:
%s
Does that directory exist and is it writeable?
You may want to use 'akara setup' to set up the directory structure.""" % err)
sys.exit(1)
except IOError, err:
# Only give the 'akara setup' text here because it's where
# we get to with an empty/nonexistant configuration file.
logger.fatal("""\
Could not open the Akara error log:
%s
Does that directory exist and is it writeable?
You may want to use 'akara setup' to set up the directory structure.""" % err)
sys.exit(1)
# Configure the access log
try:
logger_config.set_access_logfile(settings["access_log"])
except IOError, err:
logger.fatal("""\
Could not open the Akara access log:
%s
Does that directory exist and is it writeable?""" % err)
sys.exit(1)
# Don't start if the PID file already exists.
pid_file = settings["pid_file"]
if first_time and (not skip_pid_check) and os.path.exists(pid_file):
msg = ("Akara PID file %r already exists. Is another Akara instance running?\n"
"If not, remove the file or use the '-f' option to skip this check")
logger.fatal(msg % (pid_file,))
raise SystemExit(1)
if debug or not first_time:
notify_parent = NoParent()
# Only give the 'akara setup' text here because it's where
# we get to with an empty/nonexistant configuration file.
logger.fatal("""\
Could not open the Akara error log:
%s
Does that directory exist and is it writeable?
You may want to use 'akara setup' to set up the directory structure.""" % err)
sys.exit(1)
# Don't start if the PID file already exists.
pid_file = settings["pid_file"]
if first_time and (not skip_pid_check) and os.path.exists(pid_file):
msg = ("Akara PID file %r already exists. Is another Akara instance running?\n"
"If not, remove the file or use the '-f' option to skip this check")
logger.fatal(msg % (pid_file,))
raise SystemExit(1)
if debug or not first_time:
notify_parent = NoParent()
else:
# Spawn off the actual listener.
# The parent will always raise an exception, and never return.
try:
notify_parent = demonize()
except Exception, err:
# This can come from the parent or the child.
logger.critical("Cannot spawn HTTP server", exc_info=True)
raise SystemExit("Exiting - check the log file for details")
