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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
# 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 import reloader
from paste import CONFIG
from paste.util import plugin
from paste import pyconfig
from paste import urlmap
reloader_environ_key = 'WSGI_RELOADER_SHOULD_RUN'
default_config_fn = os.path.join(os.path.dirname(__file__),
'default_config.conf')
def load_commandline(args, extra_boolean=(), allow_reload=True):
conf = pyconfig.Config(with_default=True)
boolean_options = ['help', 'verbose', 'reload', 'debug',
'quiet', 'no_verbose', 'list_servers',
'daemon'] + list(extra_boolean)
conf.load_commandline(
args, bool_options=boolean_options,
aliases={'h': 'help', 'v': 'verbose', 'f': 'config_file',
'D': 'debug', 'q': 'quiet'})
if conf.get('no_verbose'):
conf['verbose'] = False
if not conf.get('no_server_conf') and os.path.exists('server.conf'):
load_conf(conf, 'server.conf', True)
if conf.get('config_file'):
load_conf(conf, conf['config_file'], True)
if conf['quiet']:
conf['verbose'] = False
if conf.get('help'):
return conf, 'help'
if conf.get('list_servers'):
return conf, None
server = conf.get('server')
if not server:
server_ops = plugin.find_plugins('servers', '_server')
server_ops.sort()
print "Missing --server=NAME"
print "Use --list-servers for a description of available servers"
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
conf.update_sys_path()
app = make_app(conf)
return conf, app
def load_commandline_options():
"""
Fake command line options, for use with help messages
"""
from optparse import Option, OptionGroup
return [
Option('-v', '--verbose',
help="Be verbose",
action="store_true"),
Option('--reload',
help="Activate reloader",
action="store_true"),
Option('-D', '--debug',
help="Turn on debug mode (tracebacks display in browser)",
action="store_true"),
Option('-q', '--quiet',
help="Display as little output as possible",
action="store_true"),
Option('-f', '--config-file',
help="Load the given configuration file (default: server.conf)",
metavar="FILENAME"),
Option('--no-verbose',
help="Suppress verbose (useful if configuration specifies verbose)",
action="store_true"),
Option('--list-servers',
help="List available servers",
action="store_true"),
]
def run_commandline(args):
conf, app = load_commandline(args)
if conf is None:
return app
CONFIG.push_process_config(conf)
return run_server(conf, app)
def get_server_mod(server_name):
try:
server_mod = plugin.load_plugin_module(
dir='servers',
dir_package='paste.servers',
name=server_name,
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)
sys.exit(1)
return server_mod
def run_server(conf, app):
server_mod = get_server_mod(conf['server'])
if conf['verbose']:
print "Starting server."
if conf.get('profile_server'):
return run_server_profiled(conf, app, server_mod)
try:
server_mod.serve(conf, app)
except KeyboardInterrupt:
# This is an okay error
pass
return 0
def run_server_profiled(conf, app, server_mod):
import hotshot
try:
prof_filename = conf.get('profile_server_log', 'hotshot_server.log')
if conf['verbose']:
print 'Logging profiling to %s' % prof_filename
prof = hotshot.Profile(prof_filename)
try:
prof.runcall(server_mod.serve, conf, app)
finally:
prof.close()
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 help():
program = sys.argv[0]
return help_message % {'program': program}
def make_app_from_filename(filename):
conf = pyconfig.setup_config(filename)
return make_app(conf)
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)
mapper = conf.get('system_urlmap')
if mapper:
mapper[''] = app
return mapper
else:
return app
def make_proxy(conf, filename, namespace):
mapper = conf.get('system_urlmap')
if mapper is None:
namespace['system_urlmap'] = mapper = urlmap.URLMap()
current_url = conf.get('base_paste_url')
if current_url is None:
namespace['base_paste_url'] = current_url = ''
return urlmap.PathProxyURLMap(
mapper, current_url, os.path.dirname(filename),
make_app_from_filename)
pyconfig.Config.builtins['urlmap'] = make_proxy
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
if conf['verbose']:
print '-'*20, 'Restarting', '-'*20
if __name__ == '__main__':
sys.exit(run_commandline(sys.argv[1:]))
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