1 files changed, 40 insertions, 0 deletions
diff --git a/src/lib/Bcfg2/Server/Lint/GroupPatterns.py b/src/lib/Bcfg2/Server/Lint/GroupPatterns.py
new file mode 100644
index 000000000..8a0ab4f18
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Lint/GroupPatterns.py
@@ -0,0 +1,40 @@
+import sys
+from Bcfg2.Server.Lint import ServerPlugin
+from Bcfg2.Server.Plugins.GroupPatterns import PatternMap
+
+
+class GroupPatterns(ServerPlugin):
+    """ ``bcfg2-lint`` plugin to check all given :ref:`GroupPatterns
+    <server-plugins-grouping-grouppatterns>` patterns for validity.
+    This is simply done by trying to create a
+    :class:`Bcfg2.Server.Plugins.GroupPatterns.PatternMap` object for
+    each pattern, and catching exceptions and presenting them as
+    ``bcfg2-lint`` errors."""
+
+    def Run(self):
+        cfg = self.core.plugins['GroupPatterns'].config
+        for entry in cfg.xdata.xpath('//GroupPattern'):
+            groups = [g.text for g in entry.findall('Group')]
+            self.check(entry, groups, ptype='NamePattern')
+            self.check(entry, groups, ptype='NameRange')
+
+    @classmethod
+    def Errors(cls):
+        return {"pattern-fails-to-initialize": "error"}
+
+    def check(self, entry, groups, ptype="NamePattern"):
+        """ Check a single pattern for validity """
+        if ptype == "NamePattern":
+            pmap = lambda p: PatternMap(p, None, groups)
+        else:
+            pmap = lambda p: PatternMap(None, p, groups)
+
+        for el in entry.findall(ptype):
+            pat = el.text
+            try:
+                pmap(pat)
+            except:  # pylint: disable=W0702
+                err = sys.exc_info()[1]
+                self.LintError("pattern-fails-to-initialize",
+                               "Failed to initialize %s %s for %s: %s" %
+                               (ptype, pat, entry.get('pattern'), err))