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#!/usr/bin/env python
"""
A generic Paste server, useable for multiple backends
"""
help_message = """\
usage: %(program)s [OPTIONS] servername
Runs a server with the given options. The following servers are available:
OPTIONS
-f FILENAME
--config-file=FILENAME
The configuration file (default: no configuration).
-h Help
--server=NAME
Name is one of:
wsgiutils:
Runs an HTTP server. Use --port for the port (default: 8080),
and --host for the interface (default: all interfaces).
cgi:
Creates a CGI script -- outputs the script to stdout.
--publish-dir=PATH
Serves Webware servlets (or other applications) out of PATH
--debug -D
Turn on debugging (shows errors in the browser)
--verbose -v
Be verbose
"""
import sys
import os
from paste import reloader
from paste import wsgilib
from paste import CONFIG
from paste.util import plugin
# This way you can run this out of a checkout, and we'll fix up
# the path...
try:
here = os.path.normpath(os.path.abspath(__file__))
except NameError:
here = os.path.normpath(os.path.abspath(sys.argv[0]))
try:
import paste
except ImportError:
sys.path.append(os.path.dirname(os.path.dirname(here)))
import paste
paste_path = os.path.normpath(
os.path.dirname(os.path.abspath(paste.__file__)))
if os.path.dirname(here) != paste_path:
sys.stderr.write(
'Warning: server.py is running out of %s, but paste is loaded '
'out of %s\n' % (here, paste_path))
from paste.pyconfig import Config
from paste.configmiddleware import config_middleware
from paste.webkit import wsgiwebkit
from paste.util import thirdparty
default_ops = {
'port': 8080,
'host': 'localhost',
'verbose': False,
'quiet': False,
'reload': False,
}
reloader_environ_key = 'WSGI_RELOADER_SHOULD_RUN'
default_config_fn = os.path.join(os.path.dirname(__file__),
'default_config.conf')
def load_commandline(args, allow_reload=True):
conf = Config()
# We use conf.verbose early, so we set it now:
conf.load_dict(default_ops, default=True)
args = conf.load_commandline(
args, bool_options=['help', 'verbose', 'reload', 'debug', 'quiet',
'no_verbose'],
aliases={'h': 'help', 'v': 'verbose', 'f': 'config_file',
'D': 'debug', 'q': 'quiet'})
if conf.get('help'):
print help()
return None, 0
if conf.get('no_verbose'):
conf['verbose'] = False
load_conf(conf, default_config_fn, True)
reloader.watch_file(default_config_fn)
if not conf.get('no_server_conf') and os.path.exists('server.conf'):
load_conf(conf, 'server.conf', True)
reloader.watch_file('server.conf')
if conf.get('config_file'):
load_conf(conf, conf['config_file'], True)
reloader.watch_file(conf['config_file'])
if conf['quiet']:
conf['verbose'] = False
server = conf.get('server')
if not server:
server_ops = plugin.find_plugins('servers', '_server')
server_ops.sort()
print "Missing --server=name, one of: %s" % ', '.join(server_ops)
return None, 0
if conf['reload'] and allow_reload:
if os.environ.get(reloader_environ_key):
if conf['verbose']:
print "Running reloading file monitor"
reloader.install(conf.get('reload_interval', 1), False)
else:
try:
return restart_with_reloader(conf)
except KeyboardInterrupt:
return None, 0
if conf.get('sys_path'):
update_sys_path(conf['sys_path'], conf['verbose'])
app = make_app(conf)
return conf, app
def run_commandline(args):
conf, app = load_commandline(args)
if conf is None:
return app
return run_server(conf, app)
def run_server(conf, app):
try:
server_mod = plugin.load_plugin_module(
dir='servers',
dir_package='paste.servers',
name=conf['server'],
name_extension='_server')
except plugin.PluginNotFound, e:
print "Error loading server: %s" % e
print "Available servers:"
server_ops = plugin.find_plugins('servers', '_server')
server_ops.sort()
print ', '.join(server_ops)
return 1
if conf['verbose']:
print "Starting server."
try:
server_mod.serve(conf, app)
except KeyboardInterrupt:
# This is an okay error
pass
return 0
def load_conf(conf, filename, default=False):
if isinstance(filename, (list, tuple)):
for fn in filename:
load_conf(conf, fn, default=default)
return
if os.path.exists(filename):
if conf['verbose']:
print 'Loading configuration from %s' % filename
conf.load(filename, default=default)
def update_sys_path(paths, verbose):
if isinstance(paths, (str, unicode)):
paths = [paths]
for path in paths:
path = os.path.abspath(path)
if path not in sys.path:
if verbose:
print 'Adding %s to path' % path
sys.path.insert(0, path)
def help():
program = sys.argv[0]
return help_message % {'program': program}
def make_app(conf):
framework_name = conf.get('framework', 'default')
framework = plugin.load_plugin_module(
os.path.join(os.path.dirname(__file__), 'frameworks'),
'paste.frameworks',
framework_name,
'_framework')
app = framework.build_application(conf)
if conf.get('lint'):
import lint
app = lint.middleware(app)
app = config_middleware(app, conf)
return app
def restart_with_reloader(conf):
if conf['verbose']:
print "Restarting process with reloading on"
while 1:
args = [sys.executable] + sys.argv
new_environ = os.environ.copy()
new_environ[reloader_environ_key] = 'true'
exit_code = os.spawnve(os.P_WAIT, sys.executable,
args, new_environ)
if exit_code != 3:
return None, exit_code
print "Exit code 3; restarting server"
if __name__ == '__main__':
sys.exit(run_commandline(sys.argv[1:]))
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