ipalib.config: Don't autoconvert values to float

When api.env is loaded, strings that "look like" floats got
auto-converted to floats.
This is wrong, as the conversion to float can lose precision.
Case in point: the api_version (e.g. '2.88') should never be
interpreted as float.

Do not automatically convert to float.

We have two numeric options: startup_timeout and wait_for_dns.
wait_for_dns is already converted to int when used in the code.
Convert startup_timeout to float explicitly when used, so
configuration that specified it with a decimal point continues
to work.

Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>

ipalib/config.py

@@ -259,11 +259,6 @@ class Env(object):
                 value = int(value)
             elif key == 'basedn':
                 value = DN(value)
-            else:
-                try:
-                    value = float(value)
-                except (TypeError, ValueError):
-                    pass
         assert type(value) in (unicode, int, float, bool, NoneType, DN)
         object.__setattr__(self, key, value)
         self.__d[key] = value

ipapython/ipautil.py

@@ -1135,6 +1135,7 @@ def wait_for_open_ports(host, ports, timeout=0):
     in seconds may be specified to limit the wait. If the timeout is
     exceeded, socket.timeout exception is raised.
     """
+    timeout = float(timeout)
     if not isinstance(ports, (tuple, list)):
         ports = [ports]
 
@@ -1156,6 +1157,7 @@ def wait_for_open_socket(socket_name, timeout=0):
     Wait until the specified socket on the local host is open. Timeout
     in seconds may be specified to limit the wait.
     """
+    timeout = float(timeout)
     op_timeout = time.time() + timeout
 
     while True:

ipapython/platform/fedora16/service.py

@@ -152,7 +152,7 @@ class Fedora16CAService(Fedora16Service):
                 'The httpd proxy is not installed, wait on local port')
             use_proxy = False
         root_logger.debug('Waiting until the CA is running')
-        timeout = api.env.startup_timeout
+        timeout = float(api.env.startup_timeout)
         op_timeout = time.time() + timeout
         while time.time() < op_timeout:
             try:

ipatests/test_ipalib/test_config.py

@@ -43,8 +43,7 @@ good_vars = (
     ('trailing_whitespace', u' value  ', u'value'),
     ('an_int', 42, 42),
     ('int_repr', ' 42 ', 42),
-    ('a_float', 3.14, 3.14),
-    ('float_repr', ' 3.14 ', 3.14),
+    ('not_a_float', '3.14', u'3.14'),
     ('true', True, True),
     ('true_repr', ' True ', True),
     ('false', False, False),
@@ -406,7 +405,7 @@ class test_Env(ClassChecker):
         assert o.yes is True
         assert o.no is False
         assert o.number == 42
-        assert o.floating == 3.14
+        assert o.floating == '3.14'
 
     def new(self, in_tree=False):
         """