Added helper for reading a custom-prefix.

This will allow classification (by human eyes) of raised-alerts.

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/custodian/util/prefix.rb b/lib/custodian/util/prefix.rb
new file mode 100644
index 0000000..743a422
--- /dev/null
+++ b/lib/custodian/util/prefix.rb
@@ -0,0 +1,42 @@
+
+
+#
+#  This class allows a custom-prefix to be prepended to any alert
+#  subjects.
+#
+module Custodian
+
+  module Util
+
+    class Prefix
+
+
+      #
+      # Return the custom-prefix to use, if any.
+      #
+      def Prefix.text()
+        # Default to no prefix.
+        default = ""
+
+        # Look for matches - last one wins.
+        Dir.glob( "/store/clients/*/custodian-prefix.cfg" ).each do |file|
+          begin
+            default = File.read( file )
+          rescue Errno::EACCES
+            # Permission-denied.
+          end
+        end
+
+        # Remove any newline characters
+        default.gsub!( /[\r\n]/, '' )
+
+        # Truncate, if required.
+        max = 32
+        default = default[0...max] if ( default.length > max )
+
+        default
+      end
+
+    end
+  end
+end