vRouter: prevent fh leakage and use buffered writes in DataBags

Author: Ronald van Zantvoort

systemvm/patches/debian/config/opt/cloud/bin/cs/CsConfig.py

@@ -26,7 +26,7 @@ class CsConfig(object):
     A class to cache all the stuff that the other classes need
     """
     __LOG_FILE = "/var/log/cloud.log"
-    __LOG_LEVEL = "DEBUG"
+    __LOG_LEVEL = "INFO"
     __LOG_FORMAT = "%(asctime)s %(levelname)-8s %(message)s"
     cl = None
 

systemvm/patches/debian/config/opt/cloud/bin/merge.py

@@ -47,28 +47,29 @@ def load(self):
         data = self.bdata
         if not os.path.exists(self.DPATH):
             os.makedirs(self.DPATH)
-        self.fpath = self.DPATH + '/' + self.key + '.json'
+        self.fpath = os.path.join(self.DPATH, self.key + '.json')
+
         try:
-            handle = open(self.fpath)
+            with open(self.fpath, 'r') as _fh:
+                logging.debug("Loading data bag type %s", self.key)
+                data = json.load(_fh)
         except IOError:
             logging.debug("Creating data bag type %s", self.key)
             data.update({"id": self.key})
-        else:
-            logging.debug("Loading data bag type %s",  self.key)
-            data = json.load(handle)
-            handle.close()
-        self.dbag = data
+        finally:
+            self.dbag = data
 
     def save(self, dbag):
         try:
-            handle = open(self.fpath, 'w')
+            with open(self.fpath, 'w') as _fh:
+                logging.debug("Writing data bag type %s", self.key)
+                json.dump(
+                    dbag, _fh,
+                    sort_keys=True,
+                    indent=2
+                )
         except IOError:
             logging.error("Could not write data bag %s", self.key)
-        else:
-            logging.debug("Writing data bag type %s", self.key)
-            logging.debug(dbag)
-        jsono = json.dumps(dbag, indent=4, sort_keys=True)
-        handle.write(jsono)
 
     def getDataBag(self):
         return self.dbag

systemvm/patches/debian/config/opt/cloud/bin/update_config.py

@@ -27,7 +27,7 @@
 import json
 from cs.CsVmPassword import *
 
-logging.basicConfig(filename='/var/log/cloud.log', level=logging.DEBUG, format='%(asctime)s  %(filename)s %(funcName)s:%(lineno)d %(message)s')
+logging.basicConfig(filename='/var/log/cloud.log', level=logging.INFO, format='%(asctime)s  %(filename)s %(funcName)s:%(lineno)d %(message)s')
 
 # first commandline argument should be the file to process
 if (len(sys.argv) != 2):