Author: reinhard
Date: 2009-10-18 12:59:43 -0500 (Sun, 18 Oct 2009)
New Revision: 9986
Added:
trunk/gnue-common/src/base/config.py
trunk/gnue-common/src/datasources/backends.py
Removed:
trunk/gnue-common/src/base/utils.py
Modified:
trunk/gnue-common/src/apps/GBaseApp.py
trunk/gnue-common/src/base/log.py
trunk/gnue-common/src/datasources/ConnectionTriggerObj.py
trunk/gnue-common/src/datasources/GConnections.py
trunk/gnue-common/src/datasources/GDataSource.py
Log:
Use new configuration management module for backends.conf (formerly known as
connections.conf).
issue146 testing
Modified: trunk/gnue-common/src/apps/GBaseApp.py
===================================================================
--- trunk/gnue-common/src/apps/GBaseApp.py 2009-10-18 17:51:05 UTC (rev
9985)
+++ trunk/gnue-common/src/apps/GBaseApp.py 2009-10-18 17:59:43 UTC (rev
9986)
@@ -43,7 +43,7 @@
from gnue.common.base.i18n import utranslate as u_
from gnue.common.apps import GConfig, GDebug
-from gnue.common.datasources import GConnections
+from gnue.common.datasources import backends, GConnections
from gnue.common.apps.CommandOption import CommandOption
@@ -381,32 +381,19 @@
lhOptions['_password'] = self.OPTIONS['password']
if self.OPTIONS['connections']:
- self.connections_file = self.OPTIONS['connections']
+ connections_file = self.OPTIONS['connections']
elif os.environ.has_key('GNUE_CONNECTIONS'):
- self.connections_file = os.environ['GNUE_CONNECTIONS']
+ connections_file = os.environ['GNUE_CONNECTIONS']
else:
- self.connections_file = os.path.join(paths.config,
+ connections_file = os.path.join(paths.config,
"connections.conf")
- assert log.debug('Connection Definition: "%s"' %
- self.connections_file)
+ backends.initialize_backends(connections_file)
- try:
- self.connections = GConnections.GConnections( \
- self.connections_file, loginOptions = lhOptions)
+ self.connections = GConnections.GConnections(
+ connections_file, loginOptions = lhOptions)
- except GConnections.InvalidFormatError, msg:
- raise errors.AdminError, \
- u_("Unable to load the connections definition file.\n\n"
- "The connections file is in an invalid format.\n%s") \
- % msg
- except IOError:
- raise StartupError, \
- u_("Unable to load the connections definition file: %s.") \
- % self.connections_file
-
-
# -------------------------------------------------------------------------
# Run the program
# -------------------------------------------------------------------------
Copied: trunk/gnue-common/src/base/config.py (from rev 9984,
trunk/gnue-common/src/base/utils.py)
===================================================================
--- trunk/gnue-common/src/base/config.py (rev 0)
+++ trunk/gnue-common/src/base/config.py 2009-10-18 17:59:43 UTC (rev
9986)
@@ -0,0 +1,171 @@
+# GNU Enterprise Common Library - Configuration file management
+#
+# Copyright 2001-2009 Free Software Foundation
+#
+# This file is part of GNU Enterprise
+#
+# GNU Enterprise 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, or (at your option) any later version.
+#
+# GNU Enterprise 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 program; see the file COPYING. If not,
+# write to the Free Software Foundation, Inc., 59 Temple Place
+# - Suite 330, Boston, MA 02111-1307, USA.
+#
+# $Id$
+
+"""
+Configuration file management.
+"""
+
+import ConfigParser
+import os.path
+import urllib
+
+from gnue import paths
+from gnue.common.base import errors
+
+__all__ = ['Config', 'config_files', 'ConfigParserError']
+
+
+# =============================================================================
+# Configuration file
+# =============================================================================
+
+class Config(ConfigParser.ConfigParser):
+ """
+ The configuration for a configuration realm.
+
+ The configuration realm can be understood as the configuration file name
+ without the .conf ending. However, for each configuration realm, several
+ files are scanned sequentially according to the L{config_files} function.
+
+ As an improvement to the standard Python ConfigParser module, this parser
+ can also handle network URLs instead of local files.
+
+ All errors happening during configuration file parsing are considered to be
+ of group 'admin'.
+ """
+
+ def __init__(self, realm, additional_url=None):
+ """
+ Scan the configuration for the given realm.
+
+ @param realm: Configuration realm (the name of the configuration file
+ without the .conf ending).
+ @type realm: string
+ """
+ # We may not import log at the beginning of this file since log imports
+ # this module.
+ from gnue.common.base import log
+
+ url_list = config_files(realm)
+
+ # TODO: location of old configuration file (gnue.conf,
+ # connections.conf), deprecate with 0.8, remove with 0.9
+ if additional_url is not None:
+ url_list.insert(0, additional_url)
+
+ ConfigParser.ConfigParser.__init__(self)
+
+ for url in url_list:
+ log.info("Reading configuration for %(realm)s from %(url)s" % {
+ 'realm': realm,
+ 'url': url})
+ try:
+ handle = urllib.urlopen(url)
+ self.readfp (handle)
+ except StandardError:
+ (group, name, message, detail) = errors.get_exception()
+ group = 'admin' # Redirect exceptions to 'admin' group.
+ raise ConfigParserError(group, name, message, detail)
+
+
+# =============================================================================
+# Global functions
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Return a list of config files to use
+# -----------------------------------------------------------------------------
+
+def config_files(realm):
+ """
+ Return a list of filenames to parse for a specific configuration realm.
+
+ The list contains all existing config files in the following order of
+ directories searched:
+ 1. system configuration file (usually /etc/gnue/*.conf)
+ 2. system configuration directory (usually /etc/gnue/*.d/)
+ 3. user configuration (~/.gnue/*.conf)
+ 4. local configuration (etc/*.conf)
+ 5. environment variable location ($GNUE_*_CONF)
+ 6. fixed system configuration (/etc/gnue/*.conf.fixed)
+ The practical use for 6. is to define configuration entries that cannot be
+ overwritten by normal users.
+
+ For example, if realm is C{backends}, on a standard install on a POSIX
+ system, the file would be searched in:
+ 1. C{/etc/gnue/backends.conf}
+ 2. C{/etc/gnue/backends.d/*}
+ 3. C{~/.gnue/backends.conf}
+ 4. C{etc/backends.conf} (from the current directory)
+ 5. the content of the C{GNUE_BACKENDS_CONF} environment variable
+ 6. C{/etc/gnue/backends.conf.fixed}
+
+ @param realm: name of the configuration file without the .conf ending
+ @type realm: string
+ @return: list of full path names of configuration files to parse
+ @rtype: string
+ """
+
+ files = []
+
+ # 1. system configuration file (usually /etc/gnue/*.conf)
+ files.append(os.path.join(paths.config, realm + '.conf'))
+
+ # 2. system configuration directory (usually /etc/gnue/*.d/)
+ confdir = os.path.join(paths.config, realm + '.d')
+ if os.path.isdir(confdir):
+ indir = os.listdir(confdir)
+ indir.sort()
+ files.extend([os.path.join(confdir, f) for f in indir])
+
+ # 3. user configuration (~/.gnue/*.conf)
+ if os.environ.has_key('HOME'):
+ files.append(os.path.join(os.environ['HOME'], '.gnue', realm +
'.conf'))
+
+ # 4. local configuration (etc/*.conf)
+ files.append(os.path.join('etc', realm + '.conf'))
+
+ # 5. environment variable location ($GNUE_*)
+ if os.environ.has_key('GNUE_' + realm.upper() + '_CONF'):
+ files.append(os.environ['GNUE_' + realm.upper() + '_CONF'])
+
+ # 6. fixed system configuration (/etc/gnue/*.conf.fixed)
+ files.append(os.path.join(paths.config, realm + '.conf.fixed'))
+
+ return [f for f in files if os.path.isfile(f)]
+
+
+# =============================================================================
+# Exceptions
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Error in configuration file
+# -----------------------------------------------------------------------------
+
+class ConfigParserError(errors.RemoteError):
+ """
+ Error parsing configuration file.
+ """
+
+ pass
Modified: trunk/gnue-common/src/base/log.py
===================================================================
--- trunk/gnue-common/src/base/log.py 2009-10-18 17:51:05 UTC (rev 9985)
+++ trunk/gnue-common/src/base/log.py 2009-10-18 17:59:43 UTC (rev 9986)
@@ -102,7 +102,7 @@
import traceback
from gnue.common.lib import modules
-from gnue.common.base import errors, utils
+from gnue.common.base import config, errors
__all__ = ['logged_f', 'deprecated_f',
'logged_f_n', 'deprecated_f_n',
@@ -759,7 +759,7 @@
# Configure logging through configuration files, or use standard
configuration
# if no configuration files available.
- config_files = utils.config_files('log')
+ config_files = config.config_files('log')
if config_files:
logging.config.fileConfig(config_files)
else:
Deleted: trunk/gnue-common/src/base/utils.py
===================================================================
--- trunk/gnue-common/src/base/utils.py 2009-10-18 17:51:05 UTC (rev 9985)
+++ trunk/gnue-common/src/base/utils.py 2009-10-18 17:59:43 UTC (rev 9986)
@@ -1,96 +0,0 @@
-# GNU Enterprise Common Library - Basic Utilities
-#
-# Copyright 2001-2009 Free Software Foundation
-#
-# This file is part of GNU Enterprise
-#
-# GNU Enterprise 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, or (at your option) any later version.
-#
-# GNU Enterprise 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 program; see the file COPYING. If not,
-# write to the Free Software Foundation, Inc., 59 Temple Place
-# - Suite 330, Boston, MA 02111-1307, USA.
-#
-# $Id$
-
-"""
-The C{utils} module provides some very basic although GNU Enterprise specific
-utility functions.
-"""
-
-import os.path
-
-from gnue import paths
-
-__all__ = ['config_files']
-
-
-# -----------------------------------------------------------------------------
-# Return a list of config files to use
-# -----------------------------------------------------------------------------
-
-def config_files(name):
- """
- Return a list of filenames to parse for a specific configuration file.
-
- The list contains all existing config files in the following order of
- directories searched:
- 1. system configuration file (usually /etc/gnue/*.conf)
- 2. system configuration directory (usually /etc/gnue/*.d/)
- 3. user configuration (~/.gnue/*.conf)
- 4. local configuration (etc/*.conf)
- 5. environment variable location ($GNUE_*_CONF)
- 6. fixed system configuration (/etc/gnue/*.conf.fixed)
- The practical use for 6. is to define configuration entries that cannot be
- overwritten by normal users.
-
- For example, if name is C{backends}, on a standard install on a POSIX
- system, the file would be searched in:
- 1. C{/etc/gnue/backends.conf}
- 2. C{/etc/gnue/backends.d/*}
- 3. C{~/.gnue/backends.conf}
- 4. C{etc/backends.conf} (from the current directory)
- 5. the content of the C{GNUE_BACKENDS_CONF} environment variable
- 6. C{/etc/gnue/backends.conf.fixed}
-
- @param name: name of the configuration file without the .conf ending
- @type name: string
- @return: list of full path names of configuration files to parse
- @rtype: string
- """
-
- files = []
-
- # 1. system configuration file (usually /etc/gnue/*.conf)
- files.append(os.path.join(paths.config, name + '.conf'))
-
- # 2. system configuration directory (usually /etc/gnue/*.d/)
- confdir = os.path.join(paths.config, name + '.d')
- if os.path.isdir(confdir):
- indir = os.listdir(confdir)
- indir.sort()
- files.extend([os.path.join(confdir, f) for f in indir])
-
- # 3. user configuration (~/.gnue/*.conf)
- if os.environ.has_key('HOME'):
- files.append(os.path.join(os.environ['HOME'], '.gnue', name + '.conf'))
-
- # 4. local configuration (etc/*.conf)
- files.append(os.path.join('etc', name + '.conf'))
-
- # 5. environment variable location ($GNUE_*)
- if os.environ.has_key('GNUE_' + name.upper() + '_CONF'):
- files.append(os.environ['GNUE_' + name.upper() + '_CONF'])
-
- # 6. fixed system configuration (/etc/gnue/*.conf.fixed)
- files.append(os.path.join(paths.config, name + '.conf.fixed'))
-
- return [f for f in files if os.path.isfile(f)]
Modified: trunk/gnue-common/src/datasources/ConnectionTriggerObj.py
===================================================================
--- trunk/gnue-common/src/datasources/ConnectionTriggerObj.py 2009-10-18
17:51:05 UTC (rev 9985)
+++ trunk/gnue-common/src/datasources/ConnectionTriggerObj.py 2009-10-18
17:59:43 UTC (rev 9986)
@@ -32,7 +32,9 @@
from gnue.common.definitions import GObjects
+from gnue.common.datasources import backends
+
# =============================================================================
# Connection wrapper object
# =============================================================================
@@ -89,7 +91,7 @@
namespace, because they will be handled like XML elements defined within
the root element.
"""
- for name in connections.getConnectionNames():
+ for name in backends.BACKENDS.sections():
try:
conn = connections.getConnection(name)
except:
@@ -105,7 +107,7 @@
Adds all the connection names to the global trigger namespace. DEPRECIATED.
"""
- for name in connections.getConnectionNames ():
+ for name in connections.backends.BACKENDS.sections():
try:
conn = connections.getConnection (name)
except:
Modified: trunk/gnue-common/src/datasources/GConnections.py
===================================================================
--- trunk/gnue-common/src/datasources/GConnections.py 2009-10-18 17:51:05 UTC
(rev 9985)
+++ trunk/gnue-common/src/datasources/GConnections.py 2009-10-18 17:59:43 UTC
(rev 9986)
@@ -24,19 +24,14 @@
Connection manager system.
"""
-from ConfigParser import *
-from ConfigParser import RawConfigParser # is not in __all__
-
import copy
import locale
import netrc
from gnue.common.base import errors, log, plugin
from gnue.common.utils.FileUtils import openResource, dyn_import
-from gnue.common.datasources import Exceptions, GLoginHandler
+from gnue.common.datasources import backends, Exceptions, GLoginHandler
-import warnings
-
# =============================================================================
# Exceptions
# =============================================================================
@@ -46,10 +41,8 @@
Connection name not found in connections.conf.
"""
def __init__ (self, name, file):
- msg = u_("The connections file does not contain a definition "
- "for \"%(connection)s\".\n\nFile: %(file)s") \
- % {'connection': name,
- 'file' : file}
+ msg = u_("No backend definition for '%(connection)s'.") % {
+ 'connection': name}
errors.AdminError.__init__ (self, msg)
# -----------------------------------------------------------------------------
@@ -85,17 +78,13 @@
"""
Class that loads connection definition files and maintains
database connections.
-
- If you pass GConnections an "eventHandler" instance, it will generate a
- Connections:Connect(name, base) when a new connection is created.
"""
# ---------------------------------------------------------------------------
# Constructor
# ---------------------------------------------------------------------------
- def __init__ (self, location, loginHandler = None, loginOptions = {},
- eventhandler = None):
+ def __init__ (self, location, loginHandler = None, loginOptions = {}):
"""
Create a new GConnections instance.
@@ -103,7 +92,6 @@
@param loginHandler: Instance of a L{GLoginHandler.LoginHandler}
descendant to ask the user for login data.
@param loginOptions: Default data for the login handler.
- @param eventhandler: Event handler to notify about new connections.
"""
# These 4 may not be private as they are used by appserver to clone the
@@ -111,67 +99,14 @@
self._location = location
self._loginHandler = loginHandler
self._loginOptions = loginOptions
- self._eventHandler = eventhandler
- # Primary connection names and their parameters
- self.__primaries = {}
-
- # Alias connection names and their parameters
- self.__aliases = {}
-
- # All connection names and their parameters
- self.__definitions = {}
-
# Dictionary of authenticated users per connection name.
self.__authenticatedUsers = {}
# Dictionary of open connections (GConnection objects) per connection name.
self.__openConnections = {}
- # Parse the connections.conf file
- parser = RawConfigParser ()
- if len (self._location):
- fileHandle = openResource (self._location)
-
- try:
- parser.readfp (fileHandle)
-
- except DuplicateSectionError:
- tmsg = u_("The connections file has duplicate source definitions."
- "\n\nFile: %s") % location
- raise InvalidFormatError, tmsg
- except MissingSectionHeaderError:
- tmsg = u_("The connections file has no source definitions."
- "\n\nFile: %s") % location
- raise InvalidFormatError, tmsg
- except Exception:
- tmsg = u_("The connections file cannot be parsed."
- "\n\nFile: %s") % location
- raise InvalidFormatError, tmsg
-
- # Read all the sections into a dict
- # and make a note of all alias names
- for section in parser.sections ():
- self.__primaries [section] = {}
- for att in parser.options (section):
- if att == 'aliases':
- for alias in ((parser.get (section,att)).lower ()).split ():
- self.__aliases [alias] = section
- else:
- self.__primaries [section] [att] = parser.get (section, att)
-
- # Fill in any aliases with their parameters
- for alias in self.__aliases.keys():
- section = self.__aliases [alias]
- self.__aliases [alias] = copy.copy (self.__primaries [section])
- self.__aliases [alias] ['_alias_of'] = section
-
- # Create the dictionary with both primaries and aliases
- self.__definitions.update (self.__aliases)
- self.__definitions.update (self.__primaries)
-
-
# ---------------------------------------------------------------------------
# Set the login handler for opening connections
# ---------------------------------------------------------------------------
@@ -185,110 +120,52 @@
# ---------------------------------------------------------------------------
- # Check if a parameter is given for a connection
+ # Returns a list of connection names
# ---------------------------------------------------------------------------
- def hasConnectionParameters (self, connection_name):
+ def getConnectionNames (self):
"""
- Check if the given connection name exists in the connections.conf file.
+ DEPRECATED: use backends.BACKENDS.sections() instead.
"""
- return self.__definitions.has_key (connection_name)
+ return backends.BACKENDS.sections()
+ getConnectionNames = log.deprecated_f(getConnectionNames)
- # ---------------------------------------------------------------------------
- # Get a parameter for a connection
- # ---------------------------------------------------------------------------
- def getConnectionParameter (self, connection_name, attribute, default =
None):
- """
- Read a parameter from the connections.conf file.
- """
-
- try:
- definition = self.__definitions [connection_name]
- try:
- return definition [attribute]
- except:
- return default
- except KeyError:
- raise NotFoundError, (connection_name, self._location)
-
-
# ---------------------------------------------------------------------------
- # Returns a list of connection names
- # ---------------------------------------------------------------------------
-
- def getConnectionNames (self, includeAliases = True):
- """
- Return a list of all connections from the connections.conf file.
-
- @param includeAliases: Whether or not to include connection aliases.
- @return: List with all connection names.
- """
-
- if includeAliases:
- return self.__definitions.keys ()
- else:
- return self.__primaries.keys ()
-
-
- # ---------------------------------------------------------------------------
# Returns an dictionary of dictionaries describing all connections
# ---------------------------------------------------------------------------
- def getAllConnectionParameters (self, includeAliases = 1):
+ def getAllConnectionParameters (self):
"""
- Return a dictionary of all connections from the connections.conf file.
-
- @param includeAliases: Whether or not to include connection aliases.
- @return: Dictionary where the keys are connection names and the values are
- dictionaries with all connection parameters.
+ DEPRECATED: use backends.BACKENDS instead.
"""
- if includeAliases:
- return copy.deepcopy (self.__definitions)
- else:
- return copy.deepcopy (self.__primaries)
+ result = {}
+ for section in backends.BACKENDS.sections():
+ result[section] = dict(backends.BACKENDS.items(section))
+ getAllConnectionParameters = log.deprecated_f(getAllConnectionParameters)
+
# ---------------------------------------------------------------------------
# Returns a dictionary describing a connection
# ---------------------------------------------------------------------------
def getConnectionParameters (self, connection_name):
"""
- Return the parameter dictionary for a given connection.
-
- @return: Dictionary with parameter name and parameter value.
+ DEPRECATED: use backends.BACKENDS.items(connection_name) instead.
"""
- try:
- return copy.deepcopy (self.__definitions [connection_name])
- except KeyError:
- raise NotFoundError, (connection_name, self._location)
+ if not backends.BACKENDS.has_section(connection_name):
+ raise NotFoundError(connection_name)
+ return dict(backends.BACKENDS.items(connection_name))
- # ---------------------------------------------------------------------------
- # Add a connection entry (session specific; i.e., doesn't add
- # to the connections.conf file, but to the current instance's
- # list of available connections.
- # ---------------------------------------------------------------------------
+ getConnectionParameters = log.deprecated_f(getConnectionParameters)
- def addConnectionSpecification (self, name, parameters):
- """
- Add a session specific connection entry.
- With this function, a temporary connection definition can be inserted
- without having to change the connections.conf file.
-
- @param name: Connection name.
- @param parameters: Connection parameters as a dictionary.
- """
-
- self.__definitions [name.lower ()] = copy.copy (parameters)
-
-
# ---------------------------------------------------------------------------
# get a connection instance and optionally log into it
# ---------------------------------------------------------------------------
@@ -320,8 +197,11 @@
# This will throw a GConnections.NotFoundError if an unknown connection
# name is specified. The calling method should catch this exception and
# handle it properly (exit w/message)
- parameters = self.getConnectionParameters (connection_base)
+ if not backends.BACKENDS.has_section(connection_base):
+ raise NotFoundError(connection_base)
+ parameters = dict(backends.BACKENDS.items(connection_base))
+
driver = parameters ['provider'].lower ().replace ('/', '.')
dbdriver = plugin.find (driver, 'gnue.common.datasources.drivers',
'Connection')
@@ -457,10 +337,13 @@
checkFields = fields
needFieldConversion = False
- descr = self.getConnectionParameter (connection_base, 'comment', '')
+ if backends.BACKENDS.has_option(connection_base, 'comment'):
+ descr = backends.BACKENDS.get(connection_basename, 'comment')
+ else:
+ descr = connection_base
text = u_('Login required for %(newline)s"%(description)s"') \
% {'newline': len (descr) and '\n' or '',
- 'description': descr or connection_base}
+ 'description': descr}
title = u_("GNU Enterprise: Login to %s") % connection_base
header = [(text, None, 'label', None, None, []),
@@ -511,10 +394,6 @@
# of open connections
self.__openConnections [connection_name] = connection
- if self._eventHandler:
- self._eventHandler.dispatchEvent ('Connections:Connect',
- name = connection_name, base = connection_base)
-
# Done
connection.__connected = True
Modified: trunk/gnue-common/src/datasources/GDataSource.py
===================================================================
--- trunk/gnue-common/src/datasources/GDataSource.py 2009-10-18 17:51:05 UTC
(rev 9985)
+++ trunk/gnue-common/src/datasources/GDataSource.py 2009-10-18 17:59:43 UTC
(rev 9986)
@@ -31,7 +31,7 @@
from gnue.common.definitions import GObjects, GParser, GParserHelpers
from gnue.common import events
from gnue.common.formatting import GTypecast
-from gnue.common.datasources import Exceptions, GConditions, GConnections
+from gnue.common.datasources import backends, Exceptions, GConditions,
GConnections
# =============================================================================
@@ -1069,12 +1069,10 @@
# Add our database connection information to the connections
# manager, then let it handle everything from there.
- root = self.findParentOfType (None)
- root._instance.connections.addConnectionSpecification (self.name, {
- 'name': self.name,
- 'provider': self.provider,
- 'dbname': self.dbname,
- 'host': self.host })
+ backends.BACKENDS.add_section(self.name)
+ backends.BACKENDS.set(self.name, 'provider', self.provider)
+ backends.BACKENDS.set(self.name, 'dbname', self.dbname)
+ backends.BACKENDS.set(self.name, 'host', self.host)
# =============================================================================
Added: trunk/gnue-common/src/datasources/backends.py
===================================================================
--- trunk/gnue-common/src/datasources/backends.py
(rev 0)
+++ trunk/gnue-common/src/datasources/backends.py 2009-10-18 17:59:43 UTC
(rev 9986)
@@ -0,0 +1,76 @@
+# GNU Enterprise Common Library - Database Backends Management
+#
+# Copyright 2009-2009 Free Software Foundation
+#
+# This file is part of GNU Enterprise.
+#
+# GNU Enterprise 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, or (at your option) any later version.
+#
+# GNU Enterprise 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 program; see the file COPYING. If not,
+# write to the Free Software Foundation, Inc., 59 Temple Place
+# - Suite 330, Boston, MA 02111-1307, USA.
+#
+# $Id$
+
+"""
+Management of available database backends.
+"""
+
+from gnue.common.base import config, log
+
+__all__ = ['BACKENDS']
+
+
+# =============================================================================
+# Configuration object mirroring backends.conf
+# =============================================================================
+
+class __BackendsConfig(config.Config):
+
+ def __init__(self, additional_url=None):
+
+ config.Config.__init__(self, 'backends', additional_url)
+
+ # For all aliases, clone the whole section.
+ for section in self.sections():
+ if self.has_option(section, 'aliases'):
+ log.deprecated(
+ "Backend definition for %(section)s uses 'aliases'" % {
+ 'section': section})
+ for alias in self.get(section, 'aliases').split():
+ self.add_section(alias)
+ for (option, value) in self.items(section):
+ if option != 'aliases':
+ self.set(alias, option, value)
+
+# -----------------------------------------------------------------------------
+
+BACKENDS = None
+
+# =============================================================================
+# Module initialization
+# =============================================================================
+
+def initialize_backends(additional_url=None):
+ """
+ Initialize the module by loading the configuration files.
+ """
+
+ global BACKENDS
+ BACKENDS = __BackendsConfig(additional_url)
+
+
+if __name__ == '__main__':
+
+ #initialize_backends() # TODO: Can initialize here when additional_url
+ # has been removed
+ pass
Property changes on: trunk/gnue-common/src/datasources/backends.py
___________________________________________________________________
Name: svn:keywords
+ Id
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