config: avoid reading mapping from useragent-kv if subnet uuid already known

[Hampapur Ajay]

At https://github.com/Juniper/contrail-controller/blob/master/src/config/vnc_openstack/vnc_openstack/neutron_plugin_db.py#L1336

        subnet_key = self._subnet_vnc_get_key(subnet_vnc, net_obj.uuid)
        sn_id = self._subnet_vnc_read_or_create_mapping(id=subnet_vnc.subnet_uuid,
                                                        key=subnet_key)

        sn_q_dict['id'] = sn_id

Reading of sn_id via useragent keyvalue datastore is only needed in for old subnets (before schema supported subnet_uuid). Doing this unconditionally causes net-list to slow down at scale.

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/7055
Committed: http://github.org/Juniper/contrail-controller/commit/5b753500d0d2f652488c981d14e7f63aa6717542
Submitter: Zuul
Branch: R1.10

commit 5b753500d0d2f652488c981d14e7f63aa6717542
Author: Hampapur Ajay <email address hidden>
Date: Thu Jan 22 21:39:00 2015 -0800

Do not read subnet-uuid from useragent kv if not necessary.

Since we don't check+store in useragent-kv for subnet mapping
in common case, handle this when neutron is asked about a subnet
it doesn't know (created by contrail API/UI) and do the mapping
store in the exception case.

Change-Id: Ia5531059b3eaecc3cff2bf5a3de671aad0a17bc3
Closes-Bug: #1413864
(cherry picked from commit a7bdf2fee2a8b8ba916a2e62a8317fb851b407a7)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/6525
Committed: http://github.org/Juniper/contrail-controller/commit/a7bdf2fee2a8b8ba916a2e62a8317fb851b407a7
Submitter: Zuul
Branch: master

commit a7bdf2fee2a8b8ba916a2e62a8317fb851b407a7
Author: Hampapur Ajay <email address hidden>
Date: Thu Jan 22 21:39:00 2015 -0800

Do not read subnet-uuid from useragent kv if not necessary.

Since we don't check+store in useragent-kv for subnet mapping
in common case, handle this when neutron is asked about a subnet
it doesn't know (created by contrail API/UI) and do the mapping
store in the exception case.

Change-Id: Ia5531059b3eaecc3cff2bf5a3de671aad0a17bc3
Closes-Bug: #1413864

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/7051
Committed: http://github.org/Juniper/contrail-controller/commit/bef10574842feebe6df1d79ec26319017ac3d0c9
Submitter: Zuul
Branch: R2.1

commit bef10574842feebe6df1d79ec26319017ac3d0c9
Author: Hampapur Ajay <email address hidden>
Date: Thu Jan 22 21:39:00 2015 -0800

Do not read subnet-uuid from useragent kv if not necessary.

Since we don't check+store in useragent-kv for subnet mapping
in common case, handle this when neutron is asked about a subnet
it doesn't know (created by contrail API/UI) and do the mapping
store in the exception case.

Change-Id: Ia5531059b3eaecc3cff2bf5a3de671aad0a17bc3
Closes-Bug: #1413864
(cherry picked from commit a7bdf2fee2a8b8ba916a2e62a8317fb851b407a7)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/7045
Committed: http://github.org/Juniper/contrail-controller/commit/9eeeb0b8e7d4afdfc4d64d40e23c7c013cd12ecc
Submitter: Zuul
Branch: R2.0

commit 9eeeb0b8e7d4afdfc4d64d40e23c7c013cd12ecc
Author: Hampapur Ajay <email address hidden>
Date: Thu Jan 22 21:39:00 2015 -0800

Do not read subnet-uuid from useragent kv if not necessary.

Since we don't check+store in useragent-kv for subnet mapping
in common case, handle this when neutron is asked about a subnet
it doesn't know (created by contrail API/UI) and do the mapping
store in the exception case.

Change-Id: Ia5531059b3eaecc3cff2bf5a3de671aad0a17bc3
Closes-Bug: #1413864
(cherry picked from commit a7bdf2fee2a8b8ba916a2e62a8317fb851b407a7)