ovn-octavia-provider/devstack/settings
Brian Haley c6cee92073 Spawn long-running processes in the driver agent
The OVN Octavia provider driver in the OvnProviderHelper
class caches these attributes:

    ovn_nbdb_api_for_events
    ovn_nb_idl_for_events
    ovn_nbdb_api

to not re-create things each time OVN IDL that is used for
handling events is called.

We should be using the Octavia Driver Provider Agent framework
instead to not have those long-running IDLs in the API process.

This change:
- Creates driver provider agent and registers its entry point
- While setting up the driver agent instance, start IDL that
  will handle events
- Stop caching ovn_nbdb_api, ovn_nb_idl_for_events and
  ovn_nbdb_api_for_events in the OvnProviderHelper class

Change-Id: I0034a48997bd6b95e1b51bfcbd56e8372b35e62f
Closes-bug: #1871355
2020-04-23 11:03:36 -04:00

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OCTAVIA_DIR=${OCTAVIA_DIR:-"${DEST}/octavia"}
OCTAVIA_CONF_DIR=${OCTAVIA_CONF_DIR:-"/etc/octavia"}
OCTAVIA_PROVIDER_DRIVERS=${OCTAVIA_PROVIDER_DRIVERS:-"amphora:Amphora,ovn:OVN"}
OCTAVIA_PROVIDER_AGENTS=${OCTAVIA_PROVIDER_AGENTS:-"ovn"}
OVN_OCTAVIA_PROVIDER_DIR=$DEST/ovn-octavia-provider