tree 2b9e896b2f1ff916c846a3535e3e1af3b6e09ef4
parent 905b840780917b14931ce9de8e200e8493fa39b4
author Shad Ansari <shad@opennetworking.org> 1530603772 +0000
committer Shad Ansari <shad@opennetworking.org> 1530603772 +0000

VOL-1030 Ignore bulk flow update if OLT is operational down.

This seems to fix voltha from 'hanging' when the openolt
driver is killed. Not entirely certain why - but it appears
that, when the gRPC connection is lost, the logical device's
state is made to be down. This causes ONOS to delete flows
trigerring the bulk flow update to the adapter. The adapter
attempts to make gRPC calls to the driver which fail after
connection timeouts. Likely twisted thread is busy with
the flow programming causing voltha to hang.

Change-Id: I9f07479f85ce2bf6cffe40c663581c013c897495