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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Added Xen-API-style error handling for INTERNAL_ERROR and
# HG changeset patch
# User Ewan Mellor <ewan@xxxxxxxxxxxxx>
# Date 1166787569 0
# Node ID e45948c4dba4aab330f09b53c40cacd3ded2b4b9
# Parent 0d0e13ff1adfd55862f6d79438549f5f0d6b2c03
Added Xen-API-style error handling for INTERNAL_ERROR and
MESSAGE_METHOD_UNKNOWN. Only add the Xen-API methods to the official Xen-API
XML-RPC server, not to the legacy one.
Signed-off-by: Ewan Mellor <ewan@xxxxxxxxxxxxx>
---
tools/python/xen/util/xmlrpclib2.py | 38 ++++++++++++++++++++-------
tools/python/xen/xend/server/SrvServer.py | 12 ++++----
tools/python/xen/xend/server/XMLRPCServer.py | 15 ++++++----
3 files changed, 45 insertions(+), 20 deletions(-)
diff -r 0d0e13ff1adf -r e45948c4dba4 tools/python/xen/util/xmlrpclib2.py
--- a/tools/python/xen/util/xmlrpclib2.py Fri Dec 22 11:38:05 2006 +0000
+++ b/tools/python/xen/util/xmlrpclib2.py Fri Dec 22 11:39:29 2006 +0000
@@ -20,6 +20,7 @@ An enhanced XML-RPC client/server interf
An enhanced XML-RPC client/server interface for Python.
"""
+import re
import string
import fcntl
from types import *
@@ -163,8 +164,10 @@ class TCPXMLRPCServer(SocketServer.Threa
class TCPXMLRPCServer(SocketServer.ThreadingMixIn, SimpleXMLRPCServer):
allow_reuse_address = True
- def __init__(self, addr, allowed, requestHandler=None,
+ def __init__(self, addr, allowed, xenapi, requestHandler=None,
logRequests = 1):
+ self.xenapi = xenapi
+
if requestHandler is None:
requestHandler = XMLRPCRequestHandler
SimpleXMLRPCServer.__init__(self, addr,
@@ -182,7 +185,7 @@ class TCPXMLRPCServer(SocketServer.Threa
flags |= fcntl.FD_CLOEXEC
fcntl.fcntl(client.fileno(), fcntl.F_SETFD, flags)
return (client, addr)
-
+
def _marshaled_dispatch(self, data, dispatch_method = None):
params, method = xmlrpclib.loads(data)
if False:
@@ -214,12 +217,29 @@ class TCPXMLRPCServer(SocketServer.Threa
except xmlrpclib.Fault, fault:
response = xmlrpclib.dumps(fault)
except Exception, exn:
- import xen.xend.XendClient
- log.exception(exn)
- response = xmlrpclib.dumps(
- xmlrpclib.Fault(xen.xend.XendClient.ERROR_INTERNAL, str(exn)))
-
+ if self.xenapi:
+ if _is_not_supported(exn):
+ errdesc = ['MESSAGE_METHOD_UNKNOWN', method]
+ else:
+ log.exception('Internal error handling %s', method)
+ errdesc = ['INTERNAL_ERROR', str(exn)]
+ response = xmlrpclib.dumps(
+ ({ "Status": "Failure",
+ "ErrorDescription": errdesc },),
+ methodresponse = 1)
+ else:
+ log.exception('Internal error handling %s', method)
+ import xen.xend.XendClient
+ response = xmlrpclib.dumps(
+ xmlrpclib.Fault(xen.xend.XendClient.ERROR_INTERNAL,
str(exn)))
return response
+
+
+notSupportedRE = re.compile(r'method "(.*)" is not supported')
+def _is_not_supported(exn):
+ m = notSupportedRE.search(exn[0])
+ return m is not None
+
# This is a XML-RPC server that sits on a Unix domain socket.
# It implements proper support for allow_reuse_address by
@@ -235,10 +255,10 @@ class UnixXMLRPCServer(TCPXMLRPCServer):
class UnixXMLRPCServer(TCPXMLRPCServer):
address_family = socket.AF_UNIX
- def __init__(self, addr, allowed, logRequests = 1):
+ def __init__(self, addr, allowed, xenapi, logRequests = 1):
mkdir.parents(os.path.dirname(addr), stat.S_IRWXU, True)
if self.allow_reuse_address and os.path.exists(addr):
os.unlink(addr)
- TCPXMLRPCServer.__init__(self, addr, allowed,
+ TCPXMLRPCServer.__init__(self, addr, allowed, xenapi,
UnixXMLRPCRequestHandler, logRequests)
diff -r 0d0e13ff1adf -r e45948c4dba4 tools/python/xen/xend/server/SrvServer.py
--- a/tools/python/xen/xend/server/SrvServer.py Fri Dec 22 11:38:05 2006 +0000
+++ b/tools/python/xen/xend/server/SrvServer.py Fri Dec 22 11:39:29 2006 +0000
@@ -198,16 +198,18 @@ def _loadConfig(servers, root, reload):
if len(addrport) == 1:
if addrport[0] == 'unix':
- servers.add(XMLRPCServer(auth,
+ servers.add(XMLRPCServer(auth, True,
path = XEN_API_SOCKET,
hosts_allowed = allowed))
else:
servers.add(
- XMLRPCServer(auth, True, '', int(addrport[0]),
+ XMLRPCServer(auth, True, True, '',
+ int(addrport[0]),
hosts_allowed = allowed))
else:
addr, port = addrport
- servers.add(XMLRPCServer(auth, True, addr, int(port),
+ servers.add(XMLRPCServer(auth, True, True, addr,
+ int(port),
hosts_allowed = allowed))
except ValueError, exn:
log.error('Xen-API server configuration %s is invalid.', api_cfg)
@@ -215,10 +217,10 @@ def _loadConfig(servers, root, reload):
log.error('Xen-API server configuration %s is invalid.', api_cfg)
if xroot.get_xend_tcp_xmlrpc_server():
- servers.add(XMLRPCServer(XendAPI.AUTH_PAM, True))
+ servers.add(XMLRPCServer(XendAPI.AUTH_PAM, False, True))
if xroot.get_xend_unix_xmlrpc_server():
- servers.add(XMLRPCServer(XendAPI.AUTH_PAM))
+ servers.add(XMLRPCServer(XendAPI.AUTH_PAM, False))
def create():
diff -r 0d0e13ff1adf -r e45948c4dba4
tools/python/xen/xend/server/XMLRPCServer.py
--- a/tools/python/xen/xend/server/XMLRPCServer.py Fri Dec 22 11:38:05
2006 +0000
+++ b/tools/python/xen/xend/server/XMLRPCServer.py Fri Dec 22 11:39:29
2006 +0000
@@ -89,8 +89,8 @@ exclude = ['domain_create', 'domain_rest
exclude = ['domain_create', 'domain_restore']
class XMLRPCServer:
- def __init__(self, auth, use_tcp=False, host = "localhost", port = 8006,
- path = XML_RPC_SOCKET, hosts_allowed = None):
+ def __init__(self, auth, use_xenapi, use_tcp=False, host = "localhost",
+ port = 8006, path = XML_RPC_SOCKET, hosts_allowed = None):
self.use_tcp = use_tcp
self.port = port
self.host = host
@@ -100,7 +100,7 @@ class XMLRPCServer:
self.ready = False
self.running = True
self.auth = auth
- self.xenapi = XendAPI.XendAPI(auth)
+ self.xenapi = use_xenapi and XendAPI.XendAPI(auth) or None
def run(self):
authmsg = (self.auth == XendAPI.AUTH_NONE and
@@ -115,11 +115,13 @@ class XMLRPCServer:
self.port, authmsg)
self.server = TCPXMLRPCServer((self.host, self.port),
self.hosts_allowed,
+ self.xenapi is not None,
logRequests = False)
else:
log.info("Opening Unix domain socket XML-RPC server on %s%s",
self.path, authmsg)
self.server = UnixXMLRPCServer(self.path, self.hosts_allowed,
+ self.xenapi is not None,
logRequests = False)
except socket.error, exn:
log.error('Cannot start server: %s!', exn.args[1])
@@ -133,9 +135,10 @@ class XMLRPCServer:
# and has the 'api' attribute.
for meth_name in dir(self.xenapi):
- meth = getattr(self.xenapi, meth_name)
- if meth_name[0] != '_' and callable(meth) and hasattr(meth, 'api'):
- self.server.register_function(meth, getattr(meth, 'api'))
+ if meth_name[0] != '_':
+ meth = getattr(self.xenapi, meth_name)
+ if callable(meth) and hasattr(meth, 'api'):
+ self.server.register_function(meth, getattr(meth, 'api'))
# Legacy deprecated xm xmlrpc api
# --------------------------------------------------------------------
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