Metadata-Version: 1.0
Name: zc.recipe.deployment
Version: 0.9.0
Summary: ZC Buildout recipe for Unix deployments
Home-page: http://www.python.org/pypi/zc.recipe.deployment
Author: Jim Fulton
Author-email: jim@zope.com
License: ZPL 2.1
Description: ***********************
        Unix Deployment Support
        ***********************
        
        .. contents::
        
        The zc.recipe.deployment recipe provides support for deploying
        applications with multiple processes on Unix systems. (Perhaps support
        for other systems will be added later.) It creates directories to hold
        application instance configuration, log and run-time files.  It also
        sets or reads options that can be read by other programs to find out
        where to place files:
        
        crontab-directory
            The name of the directory in which cron jobs should be placed.
            This is /etc/cron.d.
        
        etc-directory
            The name of the directory where configuration files should be
            placed.  This is /etc/NAME, where NAME is the deployment
            name.
        
        log-directory
            The name of the directory where application instances should write
            their log files.  This is /var/log/NAME, where NAME is
            the deployment name.
        
        logrotate-directory
            The name of the directory where logrotate configuration files
            should be placed, typically, /etc/logrotate.d.
        
        run-directory
            The name of the directory where application instances should put
            their run-time files such as pid files and inter-process
            communication socket files.  This is /var/run/NAME, where
            NAME is the deployment name.
        
        rc-directory
            The name of the directory where run-control scripts should be
            installed.  This is /etc/init.d.
        
        The etc, log, and run directories are created in such a way that the
        directories are owned by the user specified in the user option and are
        writable by the user and the user's group.
        
        Changes
        *******
        
        0.9.0 (2011-11-21)
        ==================
        
        - Fixed test dependencies.
        
        - Using Python's ``doctest`` module instead of deprecated
          ``zope.testing.doctest``.
        
        - Added a directory option for configuration to override default etc
          directory.
        
        
        0.8.0 (2010-05-18)
        ==================
        
        Features Added
        --------------
        
        Added recipe for updating configuration files that may shared by
        multiple applications.
        
        0.7.1 (2010-03-05)
        ==================
        
        Bugs fixed
        ----------
        
        - Fixed a serious bug that cause buildouts to fail when using new
          versions of the deployment recipe with older buildouts.
        
        - Made uninstall more tolerant of directories it's about to delete
          already being deleted.
        
        0.7.0 (2010-02-01)
        ==================
        
        Features Added
        --------------
        
        You can now specify a user for crontab entries that is different than
        a deployment user.
        
        0.6 (2008-02-01)
        ================
        
        Features Added
        --------------
        
        Added the ability to specify a name independent of the section name.
        Also, provide a name option for use by recipes.
        
        Important note to recipe authors: Recipes should use the deployment
        name option rather than the deployment name when computing names of
        generated files.
        
        0.5 (Mar 23, 2007)
        ==================
        
        Features Added
        --------------
        
        Added recipe for generating crontab files in /etc/cron.d.
        
        0.4 (Mar 22, 2007)
        ==================
        
        Features Added
        --------------
        
        - Added setting for the logrotate configuration directories.
        
        Bugs Fixed
        ----------
        
        - The documentation gave the wrong name for the crontab-directory option.
        
        0.3 (Feb 14, 2007)
        ==================
        
        Features Added
        --------------
        
        - Added a configuration recipe for creating configuration files.
        
        0.2.1 (Feb 13, 2007)
        ====================
        
        - Fixed bug in setup file.
        
        0.2 (Feb 7, 2007)
        =================
        
        Bugs Fixed
        ----------
        
        - Non-empty log and run directories were deleated in un- and
          re-install.
        
        Detailed Documentation
        **********************
        
        Using the deployment recipe is pretty simple. Jusr specify a
        deployment name, specified via the part name, and a deployment user.
        
        Let's add a deployment to a sample buildout:
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo
            ...
            ... [foo]
            ... prefix = %s
            ... recipe = zc.recipe.deployment
            ... user = %s
            ... etc-user = %s
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
        
        Note that we are providing a prefix and an etc-user here.  These options
        default to '/' and 'root', respectively.
        
        Now we can see that directories named foo in PREFIX/etc, PREFIX/var/log and
        PREFIX/var/run have been created:
        
            >>> import os
            >>> print ls(os.path.join(sample_buildout, 'etc/foo'))
            drwxr-xr-x USER GROUP PREFIX/etc/foo
        
            >>> print ls(os.path.join(sample_buildout, 'var/log/foo'))
            drwxr-xr-x USER GROUP PREFIX/var/log/foo
        
            >>> print ls(os.path.join(sample_buildout, 'var/run/foo'))
            drwxr-x--- USER GROUP PREFIX/var/run/foo
        
        By looking at .installed.cfg, we can see the options available for use
        by other recipes:
        
            >>> cat('.installed.cfg') # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE
            [buildout]
            ...
            [foo]
            __buildout_installed__ =
            ...
            crontab-directory = PREFIX/etc/cron.d
            etc-directory = PREFIX/etc/foo
            etc-user = USER
            log-directory = PREFIX/var/log/foo
            logrotate-directory = PREFIX/etc/logrotate.d
            name = foo
            prefix = PREFIX
            rc-directory = PREFIX/etc/init.d
            recipe = zc.recipe.deployment
            run-directory = PREFIX/var/run/foo
            user = USER
        
        If we uninstall, then the directories are removed.
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/foo'.
        
            >>> import os
            >>> os.path.exists(os.path.join(sample_buildout, 'etc/foo'))
            False
            >>> os.path.exists(os.path.join(sample_buildout, 'var/log/foo'))
            False
            >>> os.path.exists(os.path.join(sample_buildout, 'var/run/foo'))
            False
        
        The log and run directories are only removed if they are empty.
        To see that, we'll put a file in each of the directories created:
        
            >>> print system(join('bin', 'buildout')),
            ... # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
        
            >>> write(os.path.join(sample_buildout, 'etc/foo/x'), '')
            >>> write(os.path.join(sample_buildout, 'var/log/foo/x'), '')
            >>> write(os.path.join(sample_buildout, 'var/run/foo/x'), '')
        
        And then uninstall:
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Can't remove non-empty directory 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Can't remove non-empty directory 'PREFIX/var/run/foo'.
        
            >>> os.path.exists(os.path.join(sample_buildout, 'etc/foo'))
            False
        
            >>> print ls(os.path.join(sample_buildout, 'var/log/foo'))
            drwxr-xr-x USER GROUP PREFIX/var/log/foo
        
            >>> print ls(os.path.join(sample_buildout, 'var/run/foo'))
            drwxr-x--- USER GROUP PREFIX/var/run/foo
        
        Here we see that the var and run directories are kept. The etc
        directory is discarded because only buildout recipes should write to
        it and all of its data are expendible.
        
        If we reinstall, remove the files, and uninstall, then the directories
        are removed:
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Updating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Updating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
        
            >>> os.remove(os.path.join(sample_buildout, 'var/log/foo/x'))
            >>> os.remove(os.path.join(sample_buildout, 'var/run/foo/x'))
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/foo'.
        
            >>> os.path.exists('' + os.path.join(sample_buildout, 'PREFIX/etc/foo'))
            False
            >>> os.path.exists('' + os.path.join(sample_buildout, 'PREFIX/var/log/foo'))
            False
            >>> os.path.exists('' + os.path.join(sample_buildout, 'PREFIX/var/run/foo'))
            False
        
        Deployment Name
        ===============
        
        The deployment name is used for naming generated files and directories.
        The deployment name defaults to the section name, but the deployment
        name can be specified explicitly:
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... name = bar
            ... user = %s
            ... etc-user = %s
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/bar',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/bar',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/bar',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
        
        
            >>> print ls(os.path.join(sample_buildout, 'etc/bar'))
            drwxr-xr-x USER GROUP PREFIX/etc/bar
        
            >>> print ls(os.path.join(sample_buildout, 'var/log/bar'))
            drwxr-xr-x USER GROUP PREFIX/var/log/bar
        
            >>> print ls(os.path.join(sample_buildout, 'var/run/bar'))
            drwxr-x--- USER GROUP PREFIX/var/run/bar
        
            >>> cat('.installed.cfg') # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE
            [buildout]
            installed_develop_eggs =
            parts = foo
            <BLANKLINE>
            [foo]
            __buildout_installed__ =
            ...
            crontab-directory = PREFIX/etc/cron.d
            etc-directory = PREFIX/etc/bar
            etc-user = USER
            log-directory = PREFIX/var/log/bar
            logrotate-directory = PREFIX/etc/logrotate.d
            name = bar
            prefix = PREFIX
            rc-directory = PREFIX/etc/init.d
            recipe = zc.recipe.deployment
            run-directory = PREFIX/var/run/bar
            user = USER
        
        Note (here and earlier) that the options include the name option,
        which defaults to the part name.  Other parts that use the deployment
        name should use the name option rather than the part name.
        
        Configuration files
        ===================
        
        Normally, configuration files are created by specialized recipes.
        Sometimes, it's useful to specify configuration files in a buildout
        configuration file.  The zc.recipe.deployment:configuration recipe can be
        used to do that.
        
        Let's add a configuration file to our buildout:
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo x.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [x.cfg]
            ... recipe = zc.recipe.deployment:configuration
            ... text = xxx
            ...        yyy
            ...        zzz
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/bar'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/bar'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/bar'.
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
            Installing x.cfg.
        
        By default, the configuration is installed as a part:
        
            >>> cat('parts', 'x.cfg')
            xxx
            yyy
            zzz
        
        If a deployment is specified, then the file is placed in the
        deployment etc directory:
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo x.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [x.cfg]
            ... recipe = zc.recipe.deployment:configuration
            ... text = xxx
            ...        yyy
            ...        zzz
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling x.cfg.
            Updating foo.
            Installing x.cfg.
            zc.recipe.deployment:
                Updating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
        
            >>> os.path.exists(join('parts', 'x.cfg'))
            False
        
            >>> cat(os.path.join(sample_buildout, 'etc/foo/x.cfg'))
            xxx
            yyy
            zzz
        
        If a directory is specified, then the file is placed in the directory.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo x.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [x.cfg]
            ... recipe = zc.recipe.deployment:configuration
            ... text = xxx
            ...        yyy
            ...        zzz
            ... directory = etc/foobar
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling x.cfg.
            Updating foo.
            Installing x.cfg.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foobar',
                mode 755, user 'USER', group 'GROUP'
        
            >>> os.path.exists(join('parts', 'x.cfg'))
            False
            >>> os.path.exists(join(sample_buildout, 'etc/foo/x.cfg'))
            False
        
            >>> cat(os.path.join(sample_buildout, 'etc/foobar/x.cfg'))
            xxx
            yyy
            zzz
        
        A directory option works only with a deployment option.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo x.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [x.cfg]
            ... recipe = zc.recipe.deployment:configuration
            ... text = xxx
            ...        yyy
            ...        zzz
            ... directory = etc/foobar
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')),
            Uninstalling x.cfg.
            Updating foo.
            Installing x.cfg.
        
            >>> os.path.exists(join('parts', 'x.cfg'))
            True
            >>> os.path.exists(join(sample_buildout, 'etc/foobar/x.cfg'))
            False
        
            >>> cat('parts', 'x.cfg')
            xxx
            yyy
            zzz
        
        We can read data from a file rather than specifying in the
        configuration:
        
            >>> write('x.in', '1\n2\n3\n')
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo x.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [x.cfg]
            ... recipe = zc.recipe.deployment:configuration
            ... file = x.in
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling x.cfg.
            Updating foo.
            Installing x.cfg.
            zc.recipe.deployment:
                Updating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
        
            >>> cat(os.path.join(sample_buildout, 'etc/foo/x.cfg'))
            1
            2
            3
        
        The recipe sets a location option that can be used by other recipes:
        
            >>> cat('.installed.cfg') # doctest: +ELLIPSIS
            [buildout]
            ...
            [x.cfg]
            ...
            location = PREFIX/etc/foo/x.cfg
            ...
        
        Cron support
        ============
        
        The crontab recipe provides support for creating crontab files.  It
        uses a times option to specify times to run the command and a command
        option containing the command.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo cron
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [cron]
            ... recipe = zc.recipe.deployment:crontab
            ... times = 30 23 * * *
            ... command = echo hello world!
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')),
            Uninstalling x.cfg.
            Updating foo.
            Installing cron.
        
        This example creates PREFIX/etc/cron.d/foo-cron
        
            >>> open(os.path.join(sample_buildout, 'etc/cron.d/foo-cron')).read()
            '30 23 * * *\tUSER\techo hello world!\n'
        
        .. make sure cron recipe honors deployment name option:
        
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo cron
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... name = bar
            ... user = %s
            ... etc-user = %s
            ...
            ... [cron]
            ... recipe = zc.recipe.deployment:crontab
            ... times = 30 23 * * *
            ... command = echo hello world!
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling cron.
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/foo'.
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/bar',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/bar',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/bar',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
            Installing cron.
        
            >>> open(os.path.join(sample_buildout, 'etc/cron.d/bar-cron')).read()
            '30 23 * * *\tUSER\techo hello world!\n'
        
        The crontab recipe gets its  user from the buildout's deployment by default,
        but it doesn't have to.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo cron
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... name = bar
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [cron]
            ... recipe = zc.recipe.deployment:crontab
            ... times = 30 23 * * *
            ... user = bob
            ... command = echo hello world!
            ... deployment = foo
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling cron.
            Updating foo.
            Installing cron.
        
            >>> open('etc/cron.d/bar-cron').read()
            '30 23 * * *\tbob\techo hello world!\n'
        
        
        .. edge case
        
            uninstall with no stored prefix
        
            >>> installed = [l for l in open('.installed.cfg')
            ...              if not l.startswith('prefix =')]
            >>> open('.installed.cfg', 'w').write(''.join(installed))
        
            uninstall with some directories already gone:
        
            >>> rmdir(sample_buildout, 'etc', 'bar')
            >>> rmdir(sample_buildout, 'var', 'run')
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts =
            ... ''')
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling cron.
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/var/log/bar'.
        
        
        .. cleanup
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
        
            >>> os.path.exists(os.path.join(sample_buildout, 'etc/cron.d/bar-cron'))
            False
        
        
        SharedConfig
        ============
        
        This recipe can be used to update configuration files that are shared by
        multiple applications. The absolute path of the file must be specified. Also,
        the configuration files must accept comments that start with "#".
        
        Like the configuration recipe, the content to add in the configuration file can
        be provided using the "text" or the "file" option.
        
        First let's create a file that will be used as the shared configuration file.
        
            >>> open('y.cfg', 'w').write(
            ... '''Some
            ... existing
            ... configuration
            ... ''')
        
        We now create our buildout configuration and use the "sharedconfig" recipe and
        run buildout.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo y.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [y.cfg]
            ... recipe = zc.recipe.deployment:sharedconfig
            ... path = y.cfg
            ... deployment = foo
            ... text = xxx
            ...        yyy
            ...        zzz
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Updating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Updating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Updating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
            Installing y.cfg.
        
            >>> print open('y.cfg', 'r').read()
            Some
            existing
            configuration
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            xxx
            yyy
            zzz
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        Running buildout again without modifying the configuration leaves the file the
        same.
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Updating foo.
            Updating y.cfg.
        
            >>> print open('y.cfg', 'r').read()
            Some
            existing
            configuration
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            xxx
            yyy
            zzz
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        If we add some more lines to the file
        
            >>> open('y.cfg', 'a').write(
            ... '''Some
            ... additional
            ... configuration
            ... ''')
        
        and run buildout again, but this time after modifying the configuration for
        "y.cfg", the sections will be moved to the end of the file.
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo y.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [y.cfg]
            ... recipe = zc.recipe.deployment:sharedconfig
            ... path = y.cfg
            ... deployment = foo
            ... text = 111
            ...        222
            ...        333
            ... ''' % (sample_buildout, user, user))
        
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling y.cfg.
            Running uninstall recipe.
            Updating foo.
            Installing y.cfg.
        
            >>> print open('y.cfg', 'r').read()
            Some
            existing
            configuration
            Some
            additional
            configuration
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            111
            222
            333
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        The text to append to the shared configuration file can also be provided via a
        file.
        
            >>> write('x.cfg', '''
            ... [foo]
            ... a = 1
            ... b = 2
            ...
            ... [log]
            ... c = 1
            ... ''')
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo y.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [y.cfg]
            ... recipe = zc.recipe.deployment:sharedconfig
            ... path = %s/etc/z.cfg
            ... deployment = foo
            ... file = x.cfg
            ... ''' % (sample_buildout, user, user, sample_buildout))
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            While:
              Installing.
              Getting section y.cfg.
              Initializing part y.cfg.
            Error: Path 'PREFIX/etc/z.cfg' does not exist
        
        Oops. The path of the configuration file must exist. Let's create one.
        
            >>> write(join(sample_buildout, 'etc', 'z.cfg'), '')
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling y.cfg.
            Running uninstall recipe.
            Updating foo.
            Installing y.cfg.
        
            >>> print open(join(sample_buildout, 'etc', 'z.cfg'), 'r').read()
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            <BLANKLINE>
            [foo]
            a = 1
            b = 2
            <BLANKLINE>
            [log]
            c = 1
            <BLANKLINE>
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        While uninstalling, only the lines that the recipe installed are removed.
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
            Uninstalling y.cfg.
            Running uninstall recipe.
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/foo'.
        
        But the files are not deleted.
        
            >>> os.path.exists('y.cfg')
            True
        
            >>> print open('y.cfg', 'r').read()
            Some
            existing
            configuration
            Some
            additional
            configuration
            <BLANKLINE>
        
            >>> os.path.exists(join(sample_buildout, 'etc', 'z.cfg'))
            True
        
            >>> print open(join(sample_buildout, 'etc', 'z.cfg'), 'r').read()
            <BLANKLINE>
        
        
        Edgecases
        ---------
        
        The SharedConfig recipe checks to see if the current data in the file ends with
        a new line. If it doesn't exist it adds one. This is in addition to the blank
        line the recipe adds before the section to enhance readability.
        
            >>> open('anotherconfig.cfg', 'w').write('one')
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo y.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [y.cfg]
            ... recipe = zc.recipe.deployment:sharedconfig
            ... path = anotherconfig.cfg
            ... deployment = foo
            ... text = I predict that there will be a blank line above this.
            ... ''' % (sample_buildout, user, user))
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Installing foo.
            zc.recipe.deployment:
                Creating 'PREFIX/etc/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/log/foo',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/var/run/foo',
                mode 750, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/cron.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/init.d',
                mode 755, user 'USER', group 'GROUP'
            zc.recipe.deployment:
                Creating 'PREFIX/etc/logrotate.d',
                mode 755, user 'USER', group 'GROUP'
            Installing y.cfg.
        
            >>> print open('anotherconfig.cfg').read()
            one
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            I predict that there will be a blank line above this.
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        But the recipe doesn't add a new line if there was one already at the end.
        
            >>> open('anotherconfig.cfg', 'w').write('ends with a new line\n')
            >>> print open('anotherconfig.cfg').read()
            ends with a new line
            <BLANKLINE>
        
        We modify the buildout configuration so that "install" is invoked again:
        
            >>> write('buildout.cfg',
            ... '''
            ... [buildout]
            ... parts = foo y.cfg
            ...
            ... [foo]
            ... recipe = zc.recipe.deployment
            ... prefix = %s
            ... user = %s
            ... etc-user = %s
            ...
            ... [y.cfg]
            ... recipe = zc.recipe.deployment:sharedconfig
            ... path = anotherconfig.cfg
            ... deployment = foo
            ... text = there will still be only a single blank line above.
            ... ''' % (sample_buildout, user, user))
            >>> print system(join('bin', 'buildout')), # doctest: +NORMALIZE_WHITESPACE
            Uninstalling y.cfg.
            Running uninstall recipe.
            Updating foo.
            Installing y.cfg.
        
            >>> print open('anotherconfig.cfg').read()
            ends with a new line
            <BLANKLINE>
            #[foo_y.cfg DO NOT MODIFY LINES FROM HERE#
            there will still be only a single blank line above.
            #TILL HERE foo_y.cfg]#
            <BLANKLINE>
        
        If we uninstall the file, the data will be the same as "original_data":
        
            >>> print system(join('bin', 'buildout')+' buildout:parts='),
            Uninstalling y.cfg.
            Running uninstall recipe.
            Uninstalling foo.
            Running uninstall recipe.
            zc.recipe.deployment: Removing 'PREFIX/etc/foo'
            zc.recipe.deployment: Removing 'PREFIX/etc/cron.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/init.d'.
            zc.recipe.deployment: Removing 'PREFIX/etc/logrotate.d'.
            zc.recipe.deployment: Removing 'PREFIX/var/log/foo'.
            zc.recipe.deployment: Removing 'PREFIX/var/run/foo'.
        
            >>> print open('anotherconfig.cfg').read()
            ends with a new line
            <BLANKLINE>
        
        Download
        **********************
        
Keywords: deployment build
Platform: UNKNOWN
