[pysearpc] Support json return type. (#33)

* [pysearpc] Support json return type.

* Added tests for json return type

pysearpc/client.py

@@ -85,6 +85,19 @@ def _fret_objlist(ret_str):
 
     return l
 
+def _fret_json(ret_str):
+    try:
+        dicts = json.loads(ret_str)
+    except:
+        raise SearpcError('Invalid response format')
+
+    if dicts.has_key('err_code'):
+        raise SearpcError(dicts['err_msg'])
+
+    if dicts['ret']:
+        return dicts['ret']
+    else:
+        return None
 
 def searpc_func(ret_type, param_types):
 
@@ -101,6 +114,8 @@ def searpc_func(ret_type, param_types):
             fret = _fret_int
         elif ret_type == "string":
             fret = _fret_string
+        elif ret_type == "json":
+            fret = _fret_json
         else:
             raise SearpcError('Invial return type')
 

pysearpc/test_pysearpc.py

@@ -22,6 +22,10 @@ def init_server():
     searpc_server.create_service(SVCNAME)
     searpc_server.register_function(SVCNAME, add, 'add')
     searpc_server.register_function(SVCNAME, mul, 'multi')
+    searpc_server.register_function(SVCNAME, json_func, 'json_func')
+
+def json_func(a, b):
+    return {'a': a, 'b': b}
 
 
 class DummyTransport(SearpcTransport):
@@ -40,6 +44,10 @@ class RpcMixin(object):
     def multi(self, x, y):
         pass
 
+    @searpc_func("json", ["string", "int"])
+    def json_func(self, x, y):
+        pass
+
 class DummyRpcClient(SearpcClient, RpcMixin):
     def __init__(self):
         self.transport = DummyTransport()
@@ -86,6 +94,9 @@ class SearpcTest(unittest.TestCase):
         v = client.multi('abc', 2)
         self.assertEqual(v, 'abcabc')
 
+        v = client.json_func(1, 2)
+        self.assertEqual(v, json_func(1, 2))
+
 def setup_logging(level=logging.INFO):
     kw = {
         # 'format': '[%(asctime)s][%(pathname)s]: %(message)s',