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Make XMLRPC proxy object callback semantics saner

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This commit is contained in:
Dan Williams 2007-05-02 23:58:14 -04:00
parent 7774073276
commit f0205fde5c
1 changed files with 51 additions and 51 deletions
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102
sugar/p2p/network.py
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@ -33,9 +33,6 @@ import SimpleHTTPServer
import SocketServer import SocketServer
RESULT_FAILED = 0
RESULT_SUCCESS = 1
__authinfos = {} __authinfos = {}
def _add_authinfo(authinfo): def _add_authinfo(authinfo):
@ -187,17 +184,14 @@ class GlibURLDownloader(gobject.GObject):
def start(self): def start(self):
self._info = urllib.urlopen(self._url) self._info = urllib.urlopen(self._url)
self._fname = _get_filename_from_headers(info.headers) self._suggested_fname = _get_filename_from_headers(info.headers)
if not self._fname: import tempfile
import tempfile garbage, path = urllib.splittype(url)
garbage, path = urllib.splittype(url) garbage, path = urllib.splithost(path or "")
garbage, path = urllib.splithost(path or "") path, garbage = urllib.splitquery(path or "")
path, garbage = urllib.splitquery(path or "") path, garbage = urllib.splitattr(path or "")
path, garbage = urllib.splitattr(path or "") suffix = os.path.splitext(path)[1]
suffix = os.path.splitext(path)[1] (outf, self._fname) = tempfile.mkstemp(suffix=suffix, dir=self._destdir)
(outf, self._fname) = tempfile.mkstemp(suffix=suffix, dir=self._destdir)
else:
outf = open(os.path.join(self._destdir, self._fname), "w")
fcntl.fcntl(self._info.fp.fileno(), fcntl.F_SETFD, os.O_NDELAY) fcntl.fcntl(self._info.fp.fileno(), fcntl.F_SETFD, os.O_NDELAY)
self._srcid = gobject.io_add_watch(self._info.fp.fileno(), gobject.IO_IN, self._read_next_chunk) self._srcid = gobject.io_add_watch(self._info.fp.fileno(), gobject.IO_IN, self._read_next_chunk)
@ -221,14 +215,15 @@ class GlibURLDownloader(gobject.GObject):
def _read_next_chunk(self, source, condition): def _read_next_chunk(self, source, condition):
if not (condition & gobject.IO_IN): if not (condition & gobject.IO_IN):
self.cleanup() self.cleanup()
self.emit("finished", None) os.remove(self._fname)
self.emit("finished", None, None)
return False return False
data = info.fp.read(self.CHUNK_SIZE) data = info.fp.read(self.CHUNK_SIZE)
count = outf.write(data) count = outf.write(data)
if len(data) < self.CHUNK_SIZE: if len(data) < self.CHUNK_SIZE:
self.cleanup() self.cleanup()
self.emit("finished", self._fname) self.emit("finished", self._fname, self._suggested_fname)
return False return False
return True return True
@ -319,8 +314,6 @@ class GlibHTTP(httplib.HTTP):
def connect(self, host=None, port=None): def connect(self, host=None, port=None):
httplib.HTTP.connect(self, host, port) httplib.HTTP.connect(self, host, port)
self._conn.sock.setblocking(0) self._conn.sock.setblocking(0)
def get_sock(self):
return self._conn.sock
class GlibXMLRPCTransport(xmlrpclib.Transport): class GlibXMLRPCTransport(xmlrpclib.Transport):
"""Integrate the request with the glib mainloop rather than blocking.""" """Integrate the request with the glib mainloop rather than blocking."""
@ -349,7 +342,7 @@ class GlibXMLRPCTransport(xmlrpclib.Transport):
# @param verbose Debugging flag. # @param verbose Debugging flag.
# @return Parsed response. # @return Parsed response.
def start_request(self, host, handler, request_body, verbose=0, request_cb=None, user_data=None): def start_request(self, host, handler, request_body, verbose=0, reply_handler=None, error_handler=None, user_data=None):
"""Do the first half of the request by sending data to the remote """Do the first half of the request by sending data to the remote
server. The bottom half bits get run when the remote server's response server. The bottom half bits get run when the remote server's response
actually comes back.""" actually comes back."""
@ -365,10 +358,10 @@ class GlibXMLRPCTransport(xmlrpclib.Transport):
self.send_content(h, request_body) self.send_content(h, request_body)
# Schedule a GIOWatch so we don't block waiting for the response # Schedule a GIOWatch so we don't block waiting for the response
gobject.io_add_watch(h.get_sock(), gobject.IO_IN, self._finish_request, gobject.io_add_watch(h._conn.sock, gobject.IO_IN, self._finish_request,
h, host, handler, verbose, request_cb, user_data) h, host, handler, verbose, reply_handler, error_handler, user_data)
def _finish_request(self, source, condition, h, host, handler, verbose, request_cb, user_data): def _finish_request(self, source, condition, h, host, handler, verbose, reply_handler=None, error_handler=None, user_data=None):
"""Parse and return response when the remote server actually returns it.""" """Parse and return response when the remote server actually returns it."""
if not (condition & gobject.IO_IN): if not (condition & gobject.IO_IN):
return True return True
@ -379,17 +372,18 @@ class GlibXMLRPCTransport(xmlrpclib.Transport):
if err[0] != 104: if err[0] != 104:
raise socket.error(err) raise socket.error(err)
else: else:
gobject.idle_add(request_cb, RESULT_FAILED, None, user_data) if error_handler:
gobject.idle_add(error_handler, err, user_data)
return False return False
if errcode != 200: if errcode != 200:
raise xmlrpclib.ProtocolError(host + handler, errcode, errmsg, headers) raise xmlrpclib.ProtocolError(host + handler, errcode, errmsg, headers)
self.verbose = verbose self.verbose = verbose
response = self._parse_response(h.getfile(), h.get_sock()) response = self._parse_response(h.getfile(), h._conn.sock)
if request_cb: if reply_handler:
if len(response) == 1: response = response[0]
response = response[0] response.append(user_data)
gobject.idle_add(request_cb, RESULT_SUCCESS, response, user_data) gobject.idle_add(reply_handler, *response)
return False return False
class _Method: class _Method:
@ -402,8 +396,8 @@ class _Method:
self.__name = name self.__name = name
def __getattr__(self, name): def __getattr__(self, name):
return _Method(self.__send, "%s.%s" % (self.__name, name)) return _Method(self.__send, "%s.%s" % (self.__name, name))
def __call__(self, request_cb, user_data, *args): def __call__(self, *args, **kwargs):
return self.__send(self.__name, request_cb, user_data, args) return self.__send(self.__name, *args, **kwargs)
class GlibServerProxy(xmlrpclib.ServerProxy): class GlibServerProxy(xmlrpclib.ServerProxy):
@ -442,25 +436,30 @@ class GlibServerProxy(xmlrpclib.ServerProxy):
if not self._handler: if not self._handler:
self._handler = "/RPC2" self._handler = "/RPC2"
def __request(self, methodname, request_cb, user_data, params): def __request(self, methodname, *args, **kwargs):
"""Call the method on the remote server. We just start the request here """Call the method on the remote server. We just start the request here
and the transport itself takes care of scheduling the response callback and the transport itself takes care of scheduling the response callback
when the remote server returns the response. We don't want to block anywhere.""" when the remote server returns the response. We don't want to block anywhere."""
request = xmlrpclib.dumps(params, methodname, encoding=self._encoding, request = xmlrpclib.dumps(args, methodname, encoding=self._encoding,
allow_none=self._allow_none) allow_none=self._allow_none)
reply_hdl = kwargs.get("reply_handler")
err_hdl = kwargs.get("error_handler")
udata = kwargs.get("user_data")
try: try:
response = self._transport.start_request( response = self._transport.start_request(
self._host, self._host,
self._handler, self._handler,
request, request,
verbose=self._verbose, verbose=self._verbose,
request_cb=request_cb, reply_handler=reply_hdl,
user_data=user_data error_handler=err_hdl,
user_data=udata
) )
except socket.error, exc: except socket.error, exc:
gobject.idle_add(request_cb, RESULT_FAILED, None, user_data) if err_hdl:
gobject.idle_add(err_hdl, exc, udata)
def __getattr__(self, name): def __getattr__(self, name):
# magic method dispatcher # magic method dispatcher
@ -523,33 +522,34 @@ class GroupClient(object):
self._send_sock.sendto(data, (self._address, self._port)) self._send_sock.sendto(data, (self._address, self._port))
class Test(object): class Test(object):
def test(self, arg1): def test(self, arg1, arg2):
print "Request got %s" % arg1 print "Request got %s, %s" % (arg1, arg2)
return "success" return "success", "bork"
def xmlrpc_test_cb(response, user_data=None): def xmlrpc_success_cb(response, resp2, loop):
print "Response was %s, user_data was %s" % (response, user_data) print "Response was %s %s" % (response, resp2)
import gtk loop.quit()
gtk.main_quit()
def xmlrpc_error_cb(err, loop):
print "Error: %s" % err
loop.quit()
def xmlrpc_test(): def xmlrpc_test(loop):
client = GlibServerProxy("http://127.0.0.1:8888") client = GlibServerProxy("http://127.0.0.1:8888")
client.test(xmlrpc_test_cb, "bar", "test data") client.test("bar", "baz",
reply_handler=xmlrpc_success_cb,
error_handler=xmlrpc_error_cb,
user_data=loop)
def main(): def main():
import gtk loop = gobject.MainLoop()
server = GlibXMLRPCServer(("", 8888)) server = GlibXMLRPCServer(("", 8888))
inst = Test() inst = Test()
server.register_instance(inst) server.register_instance(inst)
gobject.idle_add(xmlrpc_test, loop)
gobject.idle_add(xmlrpc_test)
try: try:
gtk.main() loop.run()
except KeyboardInterrupt: except KeyboardInterrupt:
print 'Ctrl+C pressed, exiting...' print 'Ctrl+C pressed, exiting...'
print "Done." print "Done."