Use compressed index on save/load

influxgraph/classes/finder.py

@@ -30,6 +30,7 @@
 from logging.handlers import WatchedFileHandler
 import itertools
 import gc
+import gzip
 
 try:
     import statsd
@@ -510,7 +511,7 @@ def save_index(self):
         if not self.index_path:
             return
         try:
-            with open(self.index_path, 'wt') as index_fh:
+            with gzip.GzipFile(self.index_path, 'wt') as index_fh:
                 self.index.to_file(index_fh)
         except IOError as ex:
             logger.error("Error writing to index file %s - %s",
@@ -524,7 +525,7 @@ def load_index(self):
             return
         logger.info("Loading index from file %s", self.index_path,)
         try:
-            index_fh = open(self.index_path, 'rt')
+            index_fh = gzip.GzipFile(self.index_path, 'rt')
         except Exception as ex:
             logger.error("Error reading index file %s - %s", self.index_path, ex)
             return