diff options
Diffstat (limited to 'src/lib/Bcfg2/Server/Plugins/Cfg/CfgJinja2Generator.py')
-rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Cfg/CfgJinja2Generator.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib/Bcfg2/Server/Plugins/Cfg/CfgJinja2Generator.py b/src/lib/Bcfg2/Server/Plugins/Cfg/CfgJinja2Generator.py new file mode 100644 index 000000000..e36ee78aa --- /dev/null +++ b/src/lib/Bcfg2/Server/Plugins/Cfg/CfgJinja2Generator.py @@ -0,0 +1,52 @@ +""" The CfgJinja2Generator allows you to use the `Jinja2 +<http://jinja.pocoo.org/>`_ templating system to generate +:ref:`server-plugins-generators-cfg` files. """ + +import Bcfg2.Options +from Bcfg2.Server.Plugin import PluginExecutionError, \ + DefaultTemplateDataProvider, get_template_data +from Bcfg2.Server.Plugins.Cfg import CfgGenerator + +try: + from jinja2 import Template + HAS_JINJA2 = True +except ImportError: + HAS_JINJA2 = False + + +class DefaultJinja2DataProvider(DefaultTemplateDataProvider): + """ Template data provider for Jinja2 templates. Jinja2 and + Genshi currently differ over the value of the ``path`` variable, + which is why this is necessary. """ + + def get_template_data(self, entry, metadata, template): + rv = DefaultTemplateDataProvider.get_template_data(self, entry, + metadata, template) + rv['path'] = rv['name'] + return rv + + +class CfgJinja2Generator(CfgGenerator): + """ The CfgJinja2Generator allows you to use the `Jinja2 + <http://jinja.pocoo.org/>`_ templating system to generate + :ref:`server-plugins-generators-cfg` files. """ + + #: Handle .jinja2 files + __extensions__ = ['jinja2'] + + #: Low priority to avoid matching host- or group-specific + #: .crypt.jinja2 files + __priority__ = 50 + + def __init__(self, fname, spec): + CfgGenerator.__init__(self, fname, spec) + if not HAS_JINJA2: + raise PluginExecutionError("Jinja2 is not available") + __init__.__doc__ = CfgGenerator.__init__.__doc__ + + def get_data(self, entry, metadata): + template = Template(self.data.decode(Bcfg2.Options.setup.encoding)) + return template.render( + get_template_data(entry, metadata, self.name, + default=DefaultJinja2DataProvider())) + get_data.__doc__ = CfgGenerator.get_data.__doc__ |