postgresql-setup.git - Unnamed repository; edit this file 'description' to name the repository.

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author	Pavel Raiskup <praiskup@redhat.com>	2015-02-10 13:24:16 +0100
committer	Pavel Raiskup <praiskup@redhat.com>	2015-02-10 13:46:33 +0100
commit	bea99d7e37e57d209a146505313280c38c8548f1 (patch)
tree	dd83745f83b300e4a7158e6f7ab8d3b2351fdcf3 /postgresql-dtrace.patch
parent	a494c5b62cd9a22a6a2b3a6cdc49e36af4e8d9bc (diff)

legacy-scripts: generate them from single template

As we do not consider the postgresql@ unit variants (that would require libexec/initscripts/legacy-actions/postgresql@CONCRETE symlink to the default legacy-scripts directory), there is no need to do run-time checks. * Makefile.am (upgrade): Create from legacy-sysv-script.in template. (initdb): Likewise. (systemdlegacyscripts_DATA): Substitute with .. (systemdlegacyscripts_SCRIPTS): .. this to have execute bit after installation. (GENERATED_FILES): Add _SCRIPTS variant for systemdlegacyscripts. * legacy-sysv-script.in: New unified template for legacy scripts. * initdb.in: Remove. * upgrade.in: Likewise. * NEWS: Document.

Diffstat (limited to 'postgresql-dtrace.patch')

0 files changed, 0 insertions, 0 deletions

# Authors: # Jason Gerard DeRose <jderose@redhat.com> # # Copyright (C) 2008 Red Hat # see file 'COPYING' for use and warranty information # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ Plugin framework. The classes in this module make heavy use of Python container emulation. If you are unfamiliar with this Python feature, see http://docs.python.org/ref/sequence-types.html """ import re import sys import inspect import threading import os from os import path import subprocess import optparse import errors import textwrap from config import Env import util import text from text import _ from base import ReadOnly, NameSpace, lock, islocked, check_name from constants import DEFAULT_CONFIG from ipapython.ipa_log_manager import * from ipapython.version import VERSION, API_VERSION # FIXME: Updated constants.TYPE_ERROR to use this clearer format from wehjit: TYPE_ERROR = '%s: need a %r; got a %r: %r' def is_production_mode(obj): """ If the object has self.env.mode defined and that mode is production return True, otherwise return False. """ if getattr(obj, 'env', None) is None: return False if getattr(obj.env, 'mode', None) is None: return False return obj.env.mode == 'production' class Registry(object): """A decorator that makes plugins available to the API Usage:: register = Registry() @register() class obj_mod(...): ... For forward compatibility, make sure that the module-level instance of this object is named "register". """ # TODO: Instead of auto-loading when plugin modules are imported, # plugins should be stored in this object. # The API should examine it and load plugins explicitly. def __call__(self): from ipalib import api def decorator(cls): api.register(cls) return cls return decorator class SetProxy(ReadOnly): """ A read-only container with set/sequence behaviour. This container acts as a proxy to an actual set-like object (a set, frozenset, or dict) that is passed to the constructor. To the extent possible in Python, this underlying set-like object cannot be modified through the SetProxy... which just means you wont do it accidentally. """ def __init__(self, s): """ :param s: The target set-like object (a set, frozenset, or dict) """ allowed = (set, frozenset, dict) if type(s) not in allowed: raise TypeError('%r not in %r' % (type(s), allowed)) self.__s = s if not is_production_mode(self): lock(self) def __len__(self): """ Return the number of items in this container. """ return len(self.__s) def __iter__(self): """ Iterate (in ascending order) through keys. """ for key in sorted(self.__s): yield key def __contains__(self, key): """ Return True if this container contains ``key``. :param key: The key to test for membership. """ return key in self.__s class DictProxy(SetProxy): """ A read-only container with mapping behaviour. This container acts as a proxy to an actual mapping object (a dict) that is passed to the constructor. To the extent possible in Python, this underlying mapping object cannot be modified through the DictProxy... which just means you wont do it accidentally. Also see `SetProxy`. """ def __init__(self, d): """ :param d: The target mapping object (a dict) """ if type(d) is not dict: raise TypeError('%r is not %r' % (type(d), dict)) self.__d = d super(DictProxy, self).__init__(d) def __getitem__(self, key): """ Return the value corresponding to ``key``. :param key: The key of the value you wish to retrieve. """ return self.__d[key] def __call__(self): """ Iterate (in ascending order by key) through values. """ for key in self: yield self.__d[key] class MagicDict(DictProxy): """ A mapping container whose values can be accessed as attributes. For example: >>> magic = MagicDict({'the_key': 'the value'}) >>> magic['the_key'] 'the value' >>> magic.the_key 'the value' This container acts as a proxy to an actual mapping object (a dict) that is passed to the constructor. To the extent possible in Python, this underlying mapping object cannot be modified through the MagicDict... which just means you wont do it accidentally. Also see `DictProxy` and `SetProxy`. """ def __getattr__(self, name): """ Return the value corresponding to ``name``. :param name: The name of the attribute you wish to retrieve. """ try: return self[name] except KeyError: raise AttributeError('no magic attribute %r' % name) class Plugin(ReadOnly): """ Base class for all plugins. """ finalize_early = True label = None def __init__(self): self.__api = None self.__finalize_called = False self.__finalized = False self.__finalize_lock = threading.RLock() cls = self.__class__ self.name = cls.__name__ self.module = cls.__module__ self.fullname = '%s.%s' % (self.module, self.name) self.bases = tuple( '%s.%s' % (b.__module__, b.__name__) for b in cls.__bases__ ) self.doc = _(cls.__doc__) if not self.doc.msg: self.summary = '<%s>' % self.fullname else: self.summary = unicode(self.doc).split('\n\n', 1)[0].strip() log_mgr.get_logger(self, True) if self.label is None: self.label = text.FixMe(self.name + '.label') if not isinstance(self.label, text.LazyText): raise TypeError( TYPE_ERROR % ( self.fullname + '.label', text.LazyText, type(self.label), self.label ) ) def __get_api(self): """ Return `API` instance passed to `set_api()`. If `set_api()` has not yet been called, None is returned. """ return self.__api api = property(__get_api) def finalize(self): """ Finalize plugin initialization. This method calls `_on_finalize()` and locks the plugin object. Subclasses should not override this method. Custom finalization is done in `_on_finalize()`. """ with self.__finalize_lock: assert self.__finalized is False if self.__finalize_called: # No recursive calls! return self.__finalize_called = True self._on_finalize() self.__finalized = True if not is_production_mode(self): lock(self) def _on_finalize(self): """ Do custom finalization. This method is called from `finalize()`. Subclasses can override this method in order to add custom finalization. """ pass def ensure_finalized(self): """ Finalize plugin initialization if it has not yet been finalized. """ with self.__finalize_lock: if not self.__finalized: self.finalize() class finalize_attr(object): """ Create a stub object for plugin attribute that isn't set until the finalization of the plugin initialization. When the stub object is accessed, it calls `ensure_finalized()` to make sure the plugin initialization is finalized. The stub object is expected to be replaced with the actual attribute value during the finalization (preferably in `_on_finalize()`), otherwise an `AttributeError` is raised. This is used to implement on-demand finalization of plugin initialization. """ __slots__ = ('name', 'value') def __init__(self, name, value=None): self.name = name self.value = value def __get__(self, obj, cls): if obj is None or obj.api is None: return self.value obj.ensure_finalized() try: return getattr(obj, self.name) except RuntimeError: # If the actual attribute value is not set in _on_finalize(), # getattr() calls __get__() again, which leads to infinite # recursion. This can happen only if the plugin is written # badly, so advise the developer about that instead of giving # them a generic "maximum recursion depth exceeded" error. raise AttributeError( "attribute '%s' of plugin '%s' was not set in finalize()" % (self.name, obj.name) ) def set_api(self, api): """ Set reference to `API` instance. """ assert self.__api is None, 'set_api() can only be called once' assert api is not None, 'set_api() argument cannot be None' self.__api = api if not isinstance(api, API): return for name in api: assert not hasattr(self, name) setattr(self, name, api[name]) for name in ('env', 'context'): if hasattr(api, name): assert not hasattr(self, name) setattr(self, name, getattr(api, name)) def call(self, executable, *args): """ Call ``executable`` with ``args`` using subprocess.call(). If the call exits with a non-zero exit status, `ipalib.errors.SubprocessError` is raised, from which you can retrieve the exit code by checking the SubprocessError.returncode attribute. This method does *not* return what ``executable`` sent to stdout... for that, use `Plugin.callread()`. """ argv = (executable,) + args self.debug('Calling %r', argv) code = subprocess.call(argv) if code != 0: raise errors.SubprocessError(returncode=code, argv=argv) def __repr__(self): """ Return 'module_name.class_name()' representation. This representation could be used to instantiate this Plugin instance given the appropriate environment. """ return '%s.%s()' % ( self.__class__.__module__, self.__class__.__name__ ) class Registrar(DictProxy): """ Collects plugin classes as they are registered. The Registrar does not instantiate plugins... it only implements the override logic and stores the plugins in a namespace per allowed base class. The plugins are instantiated when `API.finalize()` is called. """ def __init__(self, *allowed): """ :param allowed: Base classes from which plugins accepted by this Registrar must subclass. """ self.__allowed = dict((base, {}) for base in allowed) self.__registered = set() super(Registrar, self).__init__( dict(self.__base_iter()) ) def __base_iter(self): for (base, sub_d) in self.__allowed.iteritems(): if not is_production_mode(self): assert inspect.isclass(base) name = base.__name__ if not is_production_mode(self): assert not hasattr(self, name) setattr(self, name, MagicDict(sub_d)) yield (name, base) def __findbases(self, klass): """ Iterates through allowed bases that ``klass`` is a subclass of. Raises `errors.PluginSubclassError` if ``klass`` is not a subclass of any allowed base. :param klass: The plugin class to find bases for. """ if not is_production_mode(self): assert inspect.isclass(klass) found = False for (base, sub_d) in self.__allowed.iteritems(): if issubclass(klass, base): found = True yield (base, sub_d) if not found: raise errors.PluginSubclassError( plugin=klass, bases=self.__allowed.keys() ) def __call__(self, klass, override=False): """ Register the plugin ``klass``. :param klass: A subclass of `Plugin` to attempt to register. :param override: If true, override an already registered plugin. """ if not inspect.isclass(klass): raise TypeError('plugin must be a class; got %r' % klass) # Raise DuplicateError if this exact class was already registered: if klass in self.__registered: raise errors.PluginDuplicateError(plugin=klass) # Find the base class or raise SubclassError: for (base, sub_d) in self.__findbases(klass): # Check override: if klass.__name__ in sub_d: if not override: # Must use override=True to override: raise errors.PluginOverrideError( base=base.__name__, name=klass.__name__, plugin=klass, ) else: if override: # There was nothing already registered to override: raise errors.PluginMissingOverrideError( base=base.__name__, name=klass.__name__, plugin=klass, ) # The plugin is okay, add to sub_d: sub_d[klass.__name__] = klass # The plugin is okay, add to __registered: self.__registered.add(klass) class API(DictProxy): """ Dynamic API object through which `Plugin` instances are accessed. """ def __init__(self, *allowed): self.__d = dict() self.__done = set() self.register = Registrar(*allowed) self.env = Env() super(API, self).__init__(self.__d)


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