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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
# Copyright (C) 2008-2009 Guillermo Gonzalez
#
# The code taken from bzrlib is under: Copyright (C) 2005-2008 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
""" xmlrpc service module """
from bzrlib.lazy_import import lazy_import
lazy_import(globals(), """
import bzrlib
from bzrlib import (
commands,
trace,
errors,
osutils
)
import sys
import os
import codecs
import logging
import traceback
from cStringIO import StringIO
""")
from xml_errors import XMLError
from xmlrpclib import Fault, Binary
from SimpleXMLRPCServer import SimpleXMLRPCServer
run_dir = os.getcwdu()
class BzrXMLRPCServer(SimpleXMLRPCServer):
""" Very simple xmlrpc server to handle bzr commands and search"""
finished = False
def __init__(self, addr, logRequests=False, to_file=None):
SimpleXMLRPCServer.__init__(self, addr=addr,
logRequests=logRequests)
self.register_function(self.system_listMethods, 'list_methods')
self.register_function(self.shutdown, 'quit')
self.register_function(self.hello)
register_functions(self)
self.to_file = to_file
if to_file is None:
self.to_file = sys.stdout
def register_signal(self, signum):
"""register a signal using self.signal_handler"""
signal.signal(signum, self.signal_handler)
def signal_handler(self, signum, frame):
"""signal handler, shutdown by default"""
print "Caught signal", signum
self.shutdown()
def shutdown(self):
""" stop serving and return 1 """
self.finished = True
self.server_close()
return 1
def serve_forever(self):
"""Start serving, and block"""
import bzrlib.osutils
default_encoding = 'UTF-8'
if hasattr(bzrlib, 'user_encoding'):
bzrlib.user_encoding = default_encoding
bzrlib.osutils.bzrlib.user_encoding = default_encoding
bzrlib.osutils._cached_user_encoding = default_encoding
self.encoding = default_encoding
# support new super lazy commands (bzr-1.17)
if getattr(commands, 'install_bzr_command_hooks'):
commands.install_bzr_command_hooks()
while not self.finished:
self.handle_request()
def hello(self):
""" simple reply to hello request, 'world!'"""
return 'world!'
class redirect_output(object):
"""decorator to redirect stdout/err to a StringIO"""
def __init__(self, func):
self.writer_factory = codecs.getwriter('utf8')
self.func = func
self.logger_removed = False
def __call__(self, *args, **kwargs):
if self.logger_removed:
self.remove_logger()
trace.mutter('%s arguments: %s' % (self.func.func_name, str(args)))
sys.stdout = StringIO()
sys.stderr = StringIO()
self.set_logger()
try:
return self.func(*args, **kwargs)
finally:
self.remove_logger()
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
def set_logger(self):
"""add sys.stderr as a log handler"""
encoded_stderr = self.writer_factory(sys.stderr, errors='replace')
stderr_handler = logging.StreamHandler(encoded_stderr)
stderr_handler.setLevel(logging.INFO)
logging.getLogger('bzr').addHandler(stderr_handler)
def remove_logger(self):
"""removes extra log handlers, only keeps the .bzr.log handler"""
self.logger_removed = True
del trace._bzr_logger.handlers[1:len(trace._bzr_logger.handlers)]
@redirect_output
def run_bzr(argv, workdir):
"""run a regular bzr command"""
return _run_bzr(argv, workdir, commands.main)
@redirect_output
def run_bzr_xml(argv, workdir):
"""run a bzr command, but handle errors using XMLError"""
return _run_bzr(argv, workdir, custom_commands_main)
def _run_bzr(argv, workdir, func):
"""Actually executes the command and build the response."""
try:
os.chdir(workdir)
exitval = func(argv)
sys.stderr.flush()
sys.stdout.flush()
if isinstance(exitval, Fault):
return_val = exitval
else:
# use a Binary object to wrap the output to avoid NULL and other
# non xmlrpc (or client xml parsers) friendly chars
out = Binary(data=sys.stdout.getvalue())
return_val = (exitval, out, sys.stderr.getvalue())
os.chdir(run_dir)
return return_val
except:
import traceback
traceback.print_exc(file=sys.__stderr__)
raise
def custom_commands_main(argv):
"""custom commands.main that handle errors using XMLError"""
import bzrlib.ui
bzrlib.ui.ui_factory = bzrlib.ui.make_ui_for_terminal(
sys.stdin, sys.stdout, sys.stderr)
try:
_argv = []
for a in argv[1:]:
if isinstance(a, str):
a = a.decode(bzrlib.osutils.get_user_encoding())
_argv.append(a)
argv = _argv
ret = commands.run_bzr(argv)
return ret
except errors.BzrError, e:
raise Fault(42, str(XMLError(e)))
except Exception, e:
traceback.print_exc(file=sys.__stderr__)
raise Fault(32, str(XMLError(e)))
def register_functions(server):
"""register functions exposed via xmlrpc."""
server.register_function(run_bzr, 'run_bzr_command')
server.register_function(run_bzr_xml, 'run_bzr')
import search
if search.is_available:
server.register_function(search.search, 'search')
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