[Zope-Checkins] CVS: ZODB3/ZODB - config.xml:1.1.4.1 config.py:1.1.4.1

[Jeremy Hylton]

Update of /cvs-repository/ZODB3/ZODB
In directory cvs.zope.org:/tmp/cvs-serv29246

Added Files:
      Tag: zconfig-schema-devel-branch
	config.xml config.py 
Log Message:
Some preliminary code to create databases from config files
(added on the right branch this time)


=== Added File ZODB3/ZODB/config.xml ===
<schema type="database">

  <sectiongroup type="storage">

    <sectiontype type="filestorage">
      <key name="path" datatype="str" required="yes"/>
      <key name="create" datatype="boolean" default="true"/>
      <key name="read_only" datatype="boolean" default="false"/>
      <key name="stop" datatype="str"/>
      <key name="quota" datatype="integer"/>
    </sectiontype>

    <sectiontype type="mappingstorage">
      <key name="name" datatype="str" default="Mapping Storage"/>
    </sectiontype>

    <sectiontype type="zeoclient">
      <key name="addr" datatype="str" required="yes"/>
      <key name="storage" datatype="str" default="1"/>
      <key name="cache_size" datatype="integer" default="20000000"/>
      <key name="name" datatype="str" default=""/>
      <key name="client" datatype="str"/>
      <key name="var" datatype="str"/>
      <key name="min_disconnect_poll" datatype="integer" default="5"/>
      <key name="max_disconnect_poll" datatype="integer" default="300"/>
      <key name="wait" datatype="boolean" default="on"/>
      <key name="read_only" datatype="boolean" default="off"/>
      <key name="read_only_fallback" datatype="boolean" default="off"/>
    </sectiontype>

  </sectiongroup>

      <section type="storage" name="boo" attribute="storage"/>
      <key name="cache_size" datatype="integer" default="5000"/>
      <key name="pool_size" datatype="integer" default="7"/>
      <key name="version_pool_size" datatype="integer" default="3"/>
      <key name="version_cache_size" datatype="integer" default="100"/>

</schema>


=== Added File ZODB3/ZODB/config.py ===
##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
#
##############################################################################
"""Open database and storage from a configuration.

$Id: config.py,v 1.1.4.1 2003/01/02 22:40:10 jeremy Exp $"""

import os
import StringIO

import ZConfig

import ZODB

schema_path = os.path.join(ZODB.__path__[0], "config.xml")
_schema = None

def getSchema():
    global _schema
    if _schema is None:
        _schema = ZConfig.loadSchema(schema_path)
    return _schema

def databaseFromString(s):
    return databaseFromFile(StringIO.StringIO(s))

def databaseFromFile(f):
    config, handle = ZConfig.loadConfigFile(getSchema(), f)
    return databaseFromConfig(config)

def databaseFromURL(url):
    config, handler = ZConfig.loadConfig(getSchema(), url)
    return databaseFromConfig(config)

def databaseFromConfig(config):
    return ZODB.DB(storageFromConfig(config.storage),
                   pool_size=config.pool_size,
                   cache_size=config.cache_size,
                   version_pool_size=config.version_pool_size,
                   version_cache_size=config.version_cache_size)

class StorageOpener:

    def fromConfig(self, config):
        meth = getattr(self, config.__type__.name)
        return meth(config)

    def mappingstorage(self, config):
        from ZODB.MappingStorage import MappingStorage
        return MappingStorage(config.name)

    def filestorage(self, config):
        from ZODB.FileStorage import FileStorage
        return FileStorage(config.path,
                           create=config.create,
                           read_only=config.read_only,
                           stop=config.stop,
                           quota=config.quota)

storageFromConfig = StorageOpener().fromConfig