diff options
Diffstat (limited to 'src/lib/Bcfg2/Server/Plugins/Properties.py')
-rw-r--r-- | src/lib/Bcfg2/Server/Plugins/Properties.py | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/lib/Bcfg2/Server/Plugins/Properties.py b/src/lib/Bcfg2/Server/Plugins/Properties.py new file mode 100644 index 000000000..680881858 --- /dev/null +++ b/src/lib/Bcfg2/Server/Plugins/Properties.py @@ -0,0 +1,76 @@ +import os +import re +import sys +import copy +import logging +import lxml.etree +import Bcfg2.Server.Plugin + +logger = logging.getLogger('Bcfg2.Plugins.Properties') + +class PropertyFile(Bcfg2.Server.Plugin.StructFile): + """Class for properties files.""" + def write(self): + """ Write the data in this data structure back to the property + file """ + if self.validate_data(): + try: + open(self.name, + "wb").write(lxml.etree.tostring(self.xdata, + pretty_print=True)) + return True + except IOError: + err = sys.exc_info()[1] + logger.error("Failed to write %s: %s" % (self.name, err)) + return False + else: + return False + + def validate_data(self): + """ ensure that the data in this object validates against the + XML schema for this property file (if a schema exists) """ + schemafile = self.name.replace(".xml", ".xsd") + if os.path.exists(schemafile): + try: + schema = lxml.etree.XMLSchema(file=schemafile) + except: + logger.error("Failed to process schema for %s" % self.name) + return False + else: + # no schema exists + return True + + if not schema.validate(self.xdata): + logger.error("Data for %s fails to validate; run bcfg2-lint for " + "more details" % self.name) + return False + else: + return True + + +class PropDirectoryBacked(Bcfg2.Server.Plugin.DirectoryBacked): + __child__ = PropertyFile + patterns = re.compile(r'.*\.xml$') + + +class Properties(Bcfg2.Server.Plugin.Plugin, + Bcfg2.Server.Plugin.Connector): + """ + The properties plugin maps property + files into client metadata instances. + """ + name = 'Properties' + + def __init__(self, core, datastore): + Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore) + Bcfg2.Server.Plugin.Connector.__init__(self) + try: + self.store = PropDirectoryBacked(self.data, core.fam) + except OSError: + e = sys.exc_info()[1] + self.logger.error("Error while creating Properties store: %s %s" % + (e.strerror, e.filename)) + raise Bcfg2.Server.Plugin.PluginInitError + + def get_additional_data(self, _): + return copy.copy(self.store.entries) |