Send flow export drops in Vrouter UVE

[Ashok Singh]

One of the custormer wants a way of knowing when flow sampling or sandesh drops caused them to not see some flows.
We have information about sandesh drops in the Generator UVE, but we also need information about flow sampling in the vrouter UVE. For long flows, its OK if some flow samples were missed, and long as at least one sample was seen for the flow.

So, this is the proposal – when you evict a flow from the flow table, you need a way of checking whether at least one sample has been or is being sent for this flow.
If this check fails, you increment a counter. This counter can be sent periodically in the vrouter UVE

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/20192
Submitter: Ashok Singh (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/20192
Committed: http://github.org/Juniper/contrail-controller/commit/dadd3634643d52fd1c9bff8d92e6767a074ce3cf
Submitter: Zuul
Branch: R3.0

commit dadd3634643d52fd1c9bff8d92e6767a074ce3cf
Author: ashoksingh <email address hidden>
Date: Fri May 13 15:37:54 2016 +0530

Send Flow Export drop count in Vrouter UVE

Export count of flows for which we haven't exported any samples in Vrouter UVE. This information is also made available in introspect.
Also export total number of flow samples dropped and samples dropped due to disable of flow-export.

Change-Id: I8b8dd1a9ef8d9a3fa505f3acd9576962f68f81b6
Closes-Bug: #1581445

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/20692
Submitter: Ashok Singh (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/20692
Committed: http://github.org/Juniper/contrail-controller/commit/68e689d684cef2574f3397cd3ab155d512f2fc92
Submitter: Zuul
Branch: master

commit 68e689d684cef2574f3397cd3ab155d512f2fc92
Author: ashoksingh <email address hidden>
Date: Fri May 27 10:15:44 2016 +0530

Send Flow Export drop count in Vrouter UVE

Export count of flows for which we haven't exported any samples in Vrouter UVE. This information is also made available in introspect.
Also export total number of flow samples dropped and samples dropped due to disable of flow-export.

Change-Id: I1305e7f367de7bfcc160928aa8bfda771db74121
Closes-Bug: #1581445