Switch client to JSON-RPC

Modify ipalib.rpc to support JSON-RPC in addition to XML-RPC.
This is done by subclassing and extending xmlrpclib, because
our existing code relies on xmlrpclib internals.

The URI to use is given in the new jsonrpc_uri env variable. When
it is not given, it is generated from xmlrpc_uri by replacing
/xml with /json.

The rpc_json_uri env variable existed before, but was unused,
undocumented and not set the install scripts.
This patch removes it in favor of jsonrpc_uri (for consistency
with xmlrpc_uri).

Add the rpc_protocol env variable to control the protocol
IPA uses. rpc_protocol defaults to 'jsonrpc', but may be changed
to 'xmlrpc'.
Make backend.Executioner and tests use the backend specified by
rpc_protocol.

For compatibility with unwrap_xml, decoding JSON now gives tuples
instead of lists.

Design: http://freeipa.org/page/V3/JSON-RPC
Ticket: https://fedorahosted.org/freeipa/ticket/3299

1 files changed, 4 insertions, 4 deletions

diff --git a/ipatests/test_xmlrpc/xmlrpc_test.py b/ipatests/test_xmlrpc/xmlrpc_test.py
index 2d12bcb3..04d69475 100644
--- a/ipatests/test_xmlrpc/xmlrpc_test.py
+++ b/ipatests/test_xmlrpc/xmlrpc_test.py
@@ -86,8 +86,8 @@ def fuzzy_set_ci(s):
     return Fuzzy(test=lambda other: set(x.lower() for x in other) == set(y.lower() for y in s))
 
 try:
-    if not api.Backend.xmlclient.isconnected():
-        api.Backend.xmlclient.connect(fallback=False)
+    if not api.Backend.rpcclient.isconnected():
+        api.Backend.rpcclient.connect(fallback=False)
     res = api.Command['user_show'](u'notfound')
 except errors.NetworkError:
     server_available = False
@@ -163,8 +163,8 @@ class XMLRPC_test(object):
                                 (cls.__module__, api.env.xmlrpc_uri))
 
     def setUp(self):
-        if not api.Backend.xmlclient.isconnected():
-            api.Backend.xmlclient.connect(fallback=False)
+        if not api.Backend.rpcclient.isconnected():
+            api.Backend.rpcclient.connect(fallback=False)
 
     def tearDown(self):
         """