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#
# Copyright (C) 2008, 2009 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Search for branches underneath a directory and serve them all."""
import logging
import os
import sys
from bzrlib.plugin import load_plugins
from paste import httpserver
from paste.httpexceptions import (
HTTPExceptionHandler,
HTTPForbidden,
HTTPInternalServerError,
HTTPMovedPermanently,
)
from paste.translogger import TransLogger
from loggerhead import __version__
from loggerhead import config as _mod_config
from loggerhead.apps.transport import (
BranchesFromTransportRoot, UserBranchesFromTransportRoot)
from loggerhead.util import Reloader
from loggerhead.apps.error import ErrorHandlerApp
def get_config_and_path(args):
default_args = [
'--port', '8004',
'--host', '127.0.0.1',
'--prefix', '/loggerhead',
'--use-cdn',
# Use a persistent cache directory
# I'm disabling this code because the cache just got corrupted, so it's
# safer when a new cache is created every time LH starts. I thought of
# this issue when I originally wrote this code, but I never thought it
# would actually happen.
#'--cache-dir', '/home/mnordhoff/loggerhead/cache',
'/srv/bzr',
]
args = default_args + args
config = _mod_config.LoggerheadConfig(args)
if config.get_option('show_version'):
print "loggerhead %s" % (__version__,)
sys.exit(0)
if config.arg_count > 1:
config.print_help()
sys.exit(1)
elif config.arg_count == 1:
base = config.get_arg(0)
else:
base = '.'
if not config.get_option('allow_writes'):
base = 'readonly+' + base
return config, base
def setup_logging(config):
# My logging setup is heavily based on start-loggerhead.py's
# setup_logging()
default_f = logging.Formatter('%(asctime)s %(levelname)-8s %(name)s: %(message)s')
# XXX Do I need to explicitly specify the formatter in this case?
null_f = logging.Formatter('%(message)s')
access_log = logging.FileHandler('/home/mnordhoff/loggerhead/logs/access.log', 'a')
access_log.setLevel(logging.INFO)
access_log.setFormatter(null_f)
debug_log = logging.FileHandler('/home/mnordhoff/loggerhead/logs/debug.log', 'a')
debug_log.setLevel(logging.DEBUG)
debug_log.setFormatter(default_f)
stdout_log = logging.StreamHandler(sys.stdout)
stdout_log.setLevel(logging.DEBUG)
stdout_log.setFormatter(default_f)
# XXX Loggerhead uses getLogger('loggerhead') here.
logging.getLogger('').setLevel(logging.DEBUG)
logging.getLogger('').addHandler(debug_log)
logging.getLogger('').addHandler(stdout_log)
# Paste's CLF-format log messages
logging.getLogger('wsgi').addHandler(access_log)
#logging.getLogger('wsgi').addHandler(debug_log)
#logging.getLogger('wsgi').addHandler(stdout_log)
def _restrict_logging(logger_name):
logger = logging.getLogger(logger_name)
if logger.getEffectiveLevel() < logging.INFO:
logger.setLevel(logging.INFO)
# simpleTAL is *very* verbose in DEBUG mode, which is otherwise the
# default. So quiet it up a bit.
_restrict_logging('simpleTAL')
_restrict_logging('simpleTALES')
return logging.getLogger('loggerhead')
def make_app_for_config_and_path(config, base):
if config.get_option('trunk_dir') and not config.get_option('user_dirs'):
print "--trunk-dir is only valid with --user-dirs"
sys.exit(1)
if config.get_option('reload'):
if Reloader.is_installed():
Reloader.install()
else:
return Reloader.restart_with_reloader()
if config.get_option('user_dirs'):
if not config.get_option('trunk_dir'):
print "You didn't specify a directory for the trunk directories."
sys.exit(1)
app = UserBranchesFromTransportRoot(base, config)
else:
app = BranchesFromTransportRoot(base, config)
setup_logging(config)
def redirect_bzr_requests(application):
"""WSGI middleware to redirect /.bzr/ requests to /bzr"""
def new_app(environ, start_response):
path = environ['PATH_INFO']
if '/.bzr/' in path:
# This is probably always True, but I want to be careful.
if path.startswith('/'):
new_url = 'http://bzr.mattnordhoff.com/bzr' + path
else:
new_url = 'http://bzr.mattnordhoff.com/bzr/' + path
raise HTTPMovedPermanently(new_url)
return application(environ, start_response)
return new_app
app = redirect_bzr_requests(app)
if config.get_option('profile'):
from loggerhead.middleware.profile import LSProfMiddleware
app = LSProfMiddleware(app)
if config.get_option('memory_profile'):
from dozer import Dozer
app = Dozer(app)
def block_broken_dozer_image(application):
"""One Dozer image gets thousands of pixels wide, crashing my browser.
"""
# XXX Make the response a properly-sized image, so it displays nicely
# on the page.
msg = ("There is something wrong with the generation of this image, "
"often leading to it being thousands of pixels wide and causing "
"browser crashes, so you can't see it. Sorry.")
def new_app(environ, start_response):
if environ['PATH_INFO'] == '/_dozer/chart/ctypes.CFunctionType':
raise HTTPForbidden(detail=msg)
return application(environ, start_response)
return new_app
app = block_broken_dozer_image(app)
if not config.get_option('user_prefix'):
prefix = '/'
else:
prefix = config.get_option('user_prefix')
if not prefix.startswith('/'):
prefix = '/' + prefix
try:
from paste.deploy.config import PrefixMiddleware
except ImportError:
cant_proxy_correctly_message = (
'Unsupported configuration: PasteDeploy not available, but '
'loggerhead appears to be behind a proxy.')
def check_not_proxied(app):
def wrapped(environ, start_response):
if 'HTTP_X_FORWARDED_SERVER' in environ:
exc = HTTPInternalServerError()
exc.explanation = cant_proxy_correctly_message
raise exc
return app(environ, start_response)
return wrapped
app = check_not_proxied(app)
else:
app = PrefixMiddleware(app, prefix=prefix)
app = HTTPExceptionHandler(app)
app = ErrorHandlerApp(app)
app = TransLogger(app, logger=logging.getLogger('wsgi'))
return app
def main(args):
load_plugins()
config, path = get_config_and_path(args)
app = make_app_for_config_and_path(config, path)
if not config.get_option('user_port'):
port = '8080'
else:
port = config.get_option('user_port')
if not config.get_option('user_host'):
host = '0.0.0.0'
else:
host = config.get_option('user_host')
if not config.get_option('protocol'):
protocol = 'http'
else:
protocol = config.get_option('protocol')
if protocol == 'http':
httpserver.serve(app, host=host, port=port, threadpool_workers=6)
else:
if protocol == 'fcgi':
from flup.server.fcgi import WSGIServer
elif protocol == 'scgi':
from flup.server.scgi import WSGIServer
elif protocol == 'ajp':
from flup.server.ajp import WSGIServer
else:
print 'Unknown protocol: %s.' % (protocol)
sys.exit(1)
WSGIServer(app, bindAddress=(host, int(port))).run()
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