initial checkin

diff --git a/sfa/util/topology.py b/sfa/util/topology.py
new file mode 100644 (file)
index 0000000..bd7eb18
--- /dev/null
+++ b/sfa/util/topology.py
@@ -0,0 +1,40 @@
+##
+# SFA Topology Info
+#
+# This module holds topology configuration for SFA. It is implemnted as a 
+# list of site_id tuples
+
+import os.path
+import traceback
+from sfa.util.sfalogging import logger
+
+class Topology(set):
+    """
+    Parse the topology configuration file. 
+    """
+
+    #def __init__(self, config_file = "/etc/sfa/topology"):
+    def __init__(self, config_file = "/tmp/topology"):
+        set.__init__(self) 
+        self.config_file = None
+        self.config_path = None
+        self.load(config_file)
+
+    def load(self, config_file):
+        try:
+            
+            self.config_file = config_file
+            # path to configuration data
+            self.config_path = os.path.dirname(config_file)
+            # load the links
+            f = open(config_file, 'r')
+            for line in f:
+                ignore = line.find('#')
+                if ignore > -1:
+                    line = line[0:ignore]
+                tup = line.split()
+                if len(tup) > 1:
+                    self.add((tup[0], tup[1]))    
+        except Exception, e:
+            logger.log_exc("Could not find or load the configuration file: %s" % config_file)
+            raise