mirror of
https://github.com/frappe/gunicorn.git
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139 lines
3.9 KiB
Python
139 lines
3.9 KiB
Python
# -*- coding: utf-8 -
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#
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# This file is part of gunicorn released under the MIT license.
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# See the NOTICE for more information.
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import os
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import sys
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import traceback
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from gunicorn import util
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from gunicorn.arbiter import Arbiter
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from gunicorn.config import Config
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from gunicorn import debug
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from gunicorn.six import execfile_
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class Application(object):
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"""\
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An application interface for configuring and loading
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the various necessities for any given web framework.
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"""
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def __init__(self, usage=None, prog=None):
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self.usage = usage
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self.cfg = None
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self.callable = None
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self.prog = prog
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self.logger = None
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self.do_load_config()
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def do_load_config(self):
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try:
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self.load_config()
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except Exception as e:
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sys.stderr.write("\nError: %s\n" % str(e))
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sys.stderr.flush()
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sys.exit(1)
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def load_config(self):
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# init configuration
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self.cfg = Config(self.usage, prog=self.prog)
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# parse console args
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parser = self.cfg.parser()
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args = parser.parse_args()
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# optional settings from apps
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cfg = self.init(parser, args, args.args)
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# Load up the any app specific configuration
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if cfg and cfg is not None:
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for k, v in cfg.items():
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self.cfg.set(k.lower(), v)
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# Load up the config file if its found.
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if args.config:
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if not os.path.exists(args.config):
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raise RuntimeError("%r doesn't exist" % args.config)
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cfg = {
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"__builtins__": __builtins__,
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"__name__": "__config__",
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"__file__": args.config,
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"__doc__": None,
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"__package__": None
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}
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try:
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execfile_(args.config, cfg, cfg)
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except Exception:
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print("Failed to read config file: %s" % args.config)
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traceback.print_exc()
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sys.exit(1)
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for k, v in cfg.items():
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# Ignore unknown names
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if k not in self.cfg.settings:
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continue
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try:
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self.cfg.set(k.lower(), v)
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except:
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sys.stderr.write("Invalid value for %s: %s\n\n" % (k, v))
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raise
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# Lastly, update the configuration with any command line
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# settings.
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for k, v in args.__dict__.items():
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if v is None:
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continue
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if k == "args":
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continue
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self.cfg.set(k.lower(), v)
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def init(self, parser, opts, args):
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raise NotImplementedError
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def load(self):
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raise NotImplementedError
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def reload(self):
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self.do_load_config()
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if self.cfg.spew:
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debug.spew()
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def wsgi(self):
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if self.callable is None:
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self.callable = self.load()
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return self.callable
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def run(self):
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if self.cfg.check_config:
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try:
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self.load()
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except:
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sys.stderr.write("\nError while loading the application:\n\n")
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traceback.print_exc()
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sys.stderr.flush()
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sys.exit(1)
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sys.exit(0)
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if self.cfg.spew:
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debug.spew()
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if self.cfg.daemon:
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util.daemonize()
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# set python paths
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if self.cfg.pythonpath and self.cfg.pythonpath is not None:
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paths = self.cfg.pythonpath.split(",")
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for path in paths:
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pythonpath = os.path.abspath(path)
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if pythonpath not in sys.path:
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sys.path.insert(0, pythonpath)
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try:
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Arbiter(self).run()
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except RuntimeError as e:
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sys.stderr.write("\nError: %s\n\n" % e)
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sys.stderr.flush()
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sys.exit(1)
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