Fix occasional NPEs in Connection manager

[controller.git] / opendaylight / protocol_plugins / openflow / src / main / java / org / opendaylight / controller / protocol_plugin / openflow / internal / OFStatisticsManager.java

diff --git a/opendaylight/protocol_plugins/openflow/src/main/java/org/opendaylight/controller/protocol_plugin/openflow/internal/OFStatisticsManager.java b/opendaylight/protocol_plugins/openflow/src/main/java/org/opendaylight/controller/protocol_plugin/openflow/internal/OFStatisticsManager.java
index 3ab38cc41f6db686b273864801c238f3cb36eb11..48b46eac85b9fc467387fc6454e21bb156d74796 100644 (file)
--- a/opendaylight/protocol_plugins/openflow/src/main/java/org/opendaylight/controller/protocol_plugin/openflow/internal/OFStatisticsManager.java
+++ b/opendaylight/protocol_plugins/openflow/src/main/java/org/opendaylight/controller/protocol_plugin/openflow/internal/OFStatisticsManager.java
@@ -63,12 +63,11 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * It periodically polls the different OF statistics from the OF switches and
- * caches them for quick retrieval for the above layers' modules It also
- * provides an API to directly query the switch about the statistics
+ * Periodically polls the different OF statistics from the OF switches, caches
+ * them, and publishes results towards SAL. It also provides an API to directly
+ * query the switch for any specific statistics.
  */
-public class OFStatisticsManager implements IOFStatisticsManager,
-IInventoryShimExternalListener, CommandProvider {
+public class OFStatisticsManager implements IOFStatisticsManager, IInventoryShimExternalListener, CommandProvider {
     private static final Logger log = LoggerFactory.getLogger(OFStatisticsManager.class);
     private static final int INITIAL_SIZE = 64;
     private static final long FLOW_STATS_PERIOD = 10000;