配置文件系统存储的方法

iw.recipe.fss的Python项目详细描述


支持的选项

配方支持以下选项:

形态
配置文件的文件系统路径。需要完整的路径 文件。
zope实例
独立zope实例或zeo客户端的文件系统路径列表 实例。一条线路。
存储

构建的FSS配置列表。 第一行是全局配置。以下是佐佩的台词 路径特定配置。

每条线都建立在以下模型上:
命名zope路径fss策略存储文件系统路径 备份文件系统路径

前两个参数是必需的。其他是按顺序需要的:如果 您需要定义存储文件系统路径您必须定义fss策略。 这是基于空间的配置:不要在参数中使用空格。

名称
这部分配置的名称
Zope路径
zodb中的绝对路径
fss_策略(可选)
目录(默认)、平面、站点1和站点2之间的策略
存储文件系统路径(可选)
存储活动文件的文件系统路径。默认路径为 $buildout_path/var/fss_storage_u$name
备份文件系统路径(可选)
存储文件备份的文件系统路径。默认路径为 $buildout路径/var/fss\u备份名

示例:

[fss]
recipe = iw.recipe.fss
## Deprecated
#conf = ${zopeinstance:location}/etc/plone-filesystemstorage.conf
# Replacement for 'conf' option
zope-instances =
    ${zeoclient1:location}
    ${zeoclient2:location}
storages =
# The first is always generic
    global /
# Others are always specific
    pone_flat /site flat /somewhere/files /somewhere/files_backup

示例用法

配方由buildout调用,让我们创建一个它的实例 构建模拟上下文:

>>> from zc.buildout.testing import *
>>> import os; join = os.path.join
>>> data_dir = join(test_dir, 'data')
>>> data2_dir = join(test_dir, 'data2')
>>> bin_dir = join(data_dir, 'bin')
>>> var_dir = join(data_dir, 'var2')
>>> conf_dir = join(data_dir, 'etc')
>>> conf2_dir = join(data2_dir, 'etc')
>>> buildout = {'zeoclient1': {'location': data_dir},
...         'zeoclient2': {'location': data2_dir},
...         'buildout': {'bin-directory': bin_dir}}
>>> name = 'fss'
>>> options = {'zope-instances': '''
...        %(zeoclient1_location)s
...        %(zeoclient2_location)s
...        ''' % {'zeoclient1_location': data_dir, 'zeoclient2_location': data2_dir},
...        'storages': """
...         global /
...         storage2 /site/storage2 flat
...         storage3 /site/storage3 flat %(var)s/storage
...         storage4 /site/storage4 flat %(var)s/sub/storage %(var)s/sub/backup
...         """ % {'var': var_dir}}

创建配方:

>>> from iw.recipe.fss import Recipe
>>> recipe = Recipe(buildout, name, options)

运行它:

>>> paths = list(recipe.install())

正在检查创建的文件。我们不希望这个配方列出创建的目录,所以 在卸载的情况下,它们不会被删除:

>>> paths.sort()
>>> paths
['...data/etc/plone-filesystemstorage.conf', '...data2/etc/plone-filesystemstorage.conf']

检查conf文件:

>>> conf = open(join(conf_dir,
...                  'plone-filesystemstorage.conf'))
>>> print conf.read()
# FSS conf file generated by iw.recipe.fss
<BLANKLINE>
# main storage global for /
storage-path /.../data/var/fss_storage_global
backup-path /.../data/var/fss_backup_global
storage-strategy directory
<BLANKLINE>
# storage storage2
<site /site/storage2>
 storage-path /.../data/var/fss_storage_storage2
 backup-path /.../data/var/fss_backup_storage2
 storage-strategy flat
</site>
<BLANKLINE>
# storage storage3
<site /site/storage3>
 storage-path /.../data/var2/storage
 backup-path /.../data/var/fss_backup_storage3
 storage-strategy flat
</site>
<BLANKLINE>
# storage storage4
<site /site/storage4>
 storage-path /.../sub/storage
 backup-path /.../sub/backup
 storage-strategy flat
</site>
<BLANKLINE>
<BLANKLINE>

检查conf文件:

>>> conf = open(join(conf2_dir,
...                  'plone-filesystemstorage.conf'))
>>> print conf.read()
# FSS conf file generated by iw.recipe.fss
<BLANKLINE>
# main storage global for /
storage-path /.../data/var/fss_storage_global
backup-path /.../data/var/fss_backup_global
storage-strategy directory
<BLANKLINE>
# storage storage2
<site /site/storage2>
 storage-path /.../data/var/fss_storage_storage2
 backup-path /.../data/var/fss_backup_storage2
 storage-strategy flat
</site>
<BLANKLINE>
# storage storage3
<site /site/storage3>
 storage-path /.../data/var2/storage
 backup-path /.../data/var/fss_backup_storage3
 storage-strategy flat
</site>
<BLANKLINE>
# storage storage4
<site /site/storage4>
 storage-path /.../sub/storage
 backup-path /.../sub/backup
 storage-strategy flat
</site>
<BLANKLINE>
<BLANKLINE>
< H2>现有数据

让我们用数据填满数据文件夹:

>>> storage_dir = join(var_dir, 'storage')
>>> data = 'xxxx'
>>> f = open(join(storage_dir, 'data'), 'w')
>>> f.write(data)
>>> f.close()

>>> ls(storage_dir)
- data

让我们重新运行配方:

>>> paths = list(recipe.install())

让我们确保没有返回现有路径 配方,否则zc.buildout可能会将它们视为新文件。 我们应该得到的唯一新文件是conf文件,因为 它是唯一一个每次都被重写的:

>>> paths
['...plone-filesystemstorage.conf']

我们不应该泄露数据:

>>> ls(storage_dir)
- data

>>> for path in paths:
...     try:
...         os.rmdir(path)
...     except:
...         os.remove(path)

替代配置

尝试使用conf选项:

>>> buildout = {'instance': {'location': data_dir},
...         'buildout': {'bin-directory': bin_dir}}
>>> name = 'fss'
>>> options = {'conf': join(conf_dir,
...                         'plone-filesystemstorage.conf'),
...        'storages': """
...         global /
...         storage2 /site/storage2 flat
...         """ % {'var': var_dir}}
>>> recipe = Recipe(buildout, name, options)
>>> paths = list(recipe.install())

检查conf文件:

>>> conf = open(join(conf_dir,
...                  'plone-filesystemstorage.conf'))
>>> print conf.read()
# FSS conf file generated by iw.recipe.fss
<BLANKLINE>
# main storage global for /
storage-path /.../data/var/fss_storage_global
backup-path /.../data/var/fss_backup_global
storage-strategy directory
<BLANKLINE>
# storage storage2
<site /site/storage2>
 storage-path /.../data/var/fss_storage_storage2
 backup-path /.../data/var/fss_backup_storage2
 storage-strategy flat
</site>
<BLANKLINE>

尝试不使用conf或zope实例选项:

>>> buildout = {'instance': {'location': data_dir},
...         'buildout': {'bin-directory': bin_dir}}
>>> name = 'fss'
>>> options = {'storages': """
...         global /
...         storage2 /site/storage2 flat
...         """ % {'var': var_dir}}
>>> recipe = Recipe(buildout, name, options)
>>> paths = list(recipe.install())

检查conf文件:

>>> conf = open(join(conf_dir,
...                  'plone-filesystemstorage.conf'))
>>> print conf.read()
# FSS conf file generated by iw.recipe.fss
<BLANKLINE>
# main storage global for /
storage-path /.../data/var/fss_storage_global
backup-path /.../data/var/fss_backup_global
storage-strategy directory
<BLANKLINE>
# storage storage2
<site /site/storage2>
 storage-path /.../data/var/fss_storage_storage2
 backup-path /.../data/var/fss_backup_storage2
 storage-strategy flat
</site>
<BLANKLINE>

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