On 03/11/2016 09:16 AM, David Kupka wrote:
Current version (0.5.0) of python-augeas is missing copy() method. Use
dkupka/python-augeas copr repo before new version it's build and
available in the official repos.
Hi David,
TLDR: NACK :D.
Here are high-level remarks to discuss:
Maybe it would be a good idea to move ipaaugeas/changeconf and ntp to
ipaplatform since it is dealing with (sorta) platform specific
behavior (ntp vs. chrony vs. whatever we will have for timesync in the
future). CC'ing Jan for thoughts.
Also regarding patches 0096-0097, we could have platform specific
TimeDateService object that could wrap NTP/chrony management. for
example, the task namespace functions in Pathc 0096 could be
reimplemented as a methods of the service (RedhatTimeDateService,
FedoraTimeDateService etc.) and then called in a platform-agnostic
manner.
Here are some comments regarding code:
Patch 0095:
1.)
+ IPA_CUSTOM_AUGEAS_LENSES_DIR = '/usr/share/augeas/lenses/ipa/'
Do not forget to add this directory to %install and %files spection of
the spec file so that it is correctly added to RPM build.
2.)
please separate import of system-wide and IPA-specific modules by
blank line
+import collections
+from augeas import Augeas
+from ipaplatform.paths import paths
+from ipapython.ipa_log_manager import root_logger
3.) the call to parent's __new__ should have signature 'super(aug_obj,
cls).__new__(*args, **kwargs)'
+ cls._instance = super(aug_obj, cls).__new__(cls, *args,
**kwargs)
4.)
+ raise RuntimeError('Augeas lenses was loaded. Could not
add more'
+ 'lenses.')
Should be 'Augeas lenses _were_ loaded'
5.)
+ if lens in self.lenses:
+ raise RuntimeError('Lens %s already added.' % lens)
+ self.lenses.append(lens)
+ load_path = '/augeas/load/{0}'.format(lens
Shouldn't the following code use os.path,join to construct the
load_path?
6.) I would prefer the following indentation style in the add_lens()
method
@@ -65,9 +65,9 @@ class aug_obj(object):
for conf_file in conf_files:
self._aug.set(os.path.join(load_path, 'incl[0]'),
conf_file)
self.tree['old'] = self.tree.get(conf_file, None)
- self.tree[conf_file] = aug_node(self._aug,
- os.path.join('/files',
- conf_file[1:]))
+ self.tree[conf_file] = aug_node(
+ self._aug, os.path.join('/files', conf_file[1:])
+ )
7.) I would also prefer if the hardcoded paths like '/augeas/load',
'files', and '//error' would be made into either module variables or
class members.
8.)
+ def load(self):
+ if self._loaded:
+ raise RuntimeError('Augeas lenses was loaded. Could not
add more'
+ 'lenses.')
Fix the excpetion text in the same way as in 4.)
9.)
+ errors = self._aug.match(os.path.join('//error'))
is the os.path.join necessary here?
10.) I guess you can rewrite the error message in load() method using
list comprehension:
@@ -76,9 +76,9 @@ class aug_obj(object):
self._aug.load()
errors = self._aug.match(os.path.join('//error'))
if errors:
- err_msg = ""
- for error in errors:
- err_msg += ("{}: {}".format(error,
self._aug.get(error)))
+ err_msg = '\n'.join(
+ ["{}: {}".format(e, self._aug.get(e)) for e in errors]
+ )
raise RuntimeError(err_msg)
self._loaded = True
11.)
+class aug_node(collections.MutableMapping):
+ """ Single augeas node.
+ Can be handled as python dict().
+ """
+ def __init__(self, aug, path):
+ self._aug = aug
+ if path and os.path.isabs(path):
+ self._path = path
+ else:
+ self._tmp = _tmp_path(aug, path)
+ self._path = self._tmp.path
Isn't it better to change signature of __init__ to:
def __init__(self, aug, path=None):
and then test whether path is None?
12.)
def __setitem__(self, key, node):
+ target = os.path.join(self._path, key)
+ end = '{0}[0]'.format(os.path.join(self._path, key))
+ if self._aug.match(target):
+ self._aug.remove(target)
+ target_list = aug_list(self._aug, target)
+ for src_node in aug_list(node._aug, node._path):
+ target_list.append(src_node)
The 'end' variable is declared but not used.
13.)
+
+ def __len__(self):
+ return len(self._aug.match('{0}/*'.format(self._path)))
+
+ def __iter__(self):
+ for key in self._aug.match('{0}/*'.format(self._path)):
+ yield self._aug.label(key)
+ raise StopIteration()
+
Shouldn't we construct paths using os.path.join for the sake of
consistency?
14.)
+ def __bool__(self):
+ return (bool(len(self)) or bool(self.value))
The parentheses around the boolean expression are not needed
15.)
+class aug_list(collections.MutableSequence):
+ """Augeas NODESET.
+ Can be handled as a list().
+ """
+ def __init__(self, aug, path):
+ self._aug = aug
+ if path and os.path.isabs(path):
+ self._path = path
+ else:
+ self._tmp = _tmp_path(aug, path)
+ self._path = self._tmp.path
I would use 'path=None' int he signature and then test whether 'path
is not None'.
16.)
+ if not self._aug.match(target):
+ raise IndexError()
It would be nice if you could put some basic error message into the
raised exceptions, like "node index out of range" or something like
that
17.)
+ elif isinstance(index, slice):
+ label = self._path.split('/')[-1]
you could use os.path.basename() to get the leaf node.
18.)
+ replace = range_target[:len(node)]
+ delete = create = []
Be careful here as you create two references to the same empty list
object, which is probably not what you wanted.
19.)
+ try:
+ create_start = range_target[-1]+1
+ except IndexError:
+ create_start = self._idx_pos(index.start)
+ create_stop = create_start+len(node)-len(replace)
+ create = list(range(create_start, create_stop))
Please respect PEP8 and put spaces around arithmetic operators in
assignments.
Also it would be nice to have at least a minimal test suite for this
module, but that may be a separate ticket.
patch 0096:
1.) please fix the commit message
2.) please use new-style license header in ipapython/ntp.py
3.)
+ return ("Conflicting Time&Date synchroniztion service '%s'
is "
+ "currently enabled and/or running on the system."
+ % self.conflicting_service)
Please fix the typo in the error message.
4.)
+ service = services.service(self.service_name)
+ if sstore:
+ if sstore.get_state('ntp', 'enabled') is None:
+ sstore.backup_state('ntp', 'enabled',
service.is_enabled())
+
+ if fstore:
+ if not fstore.has_file(self.conf_file):
+ fstore.backup_file(self.conf_file)
the conditions in the 'if' statement can be merged into single AND
expression
5.)
+ self._store_service_state(sstore, fstore)
+ if sstore:
+ sstore.backup_state('ntp', "enabled",
service.is_enabled())
+
+ if fstore:
+ fstore.backup_file(self.conf_file)
I think these checks are redundant here.
6.)
+ # In such case it is OK to fail
+ try:
+ restored = fstore.restore_file(self.conf_file)
+ except Exception:
+ pass
Instead of 'pass' it would be better to set restored to False so that
you don't hit NameError later.
7.)
+
+ def configure_client(self, ntp_servers=[], sstore=None,
fstore=None):
+ self.server_options['burst'] = None
+ self.server_options['iburst'] = None
I would rather set these instance variables in __init__() than here.
8.)
+ def configure_client(self, ntp_servers=[], sstore=None,
fstore=None):
+ self.conf_file = paths.CHRONY_CONF
self.conf_file is already defined in constructor.
9.)
+ self.server_options['iburst'] = None
this should be moved to __init__()
10.)
+ with ipaaugeas.aug_obj() as aug:
+ try:
+ aug.add_lens(self.lens, [self.conf_file])
+ aug.load()
+ except RuntimeError as e:
+ raise NTPConfigurationError(e)
This code is repeated quite a few times, maybe it would be a good idea
to factor it out to a method of NTPService object.
Patch 0097:
1.) please fix a typo here:
+ description="Disble any other Time synchronization services."
2.)
+ installutils, kra, krbinstance, memcacheinstance, ntpinstance,
you have 2 spaces before 'ntpinstance'
