tree 76800b8add85f0d0001151d00917541e52f7c40f
parent 4fd9ea5fffe391036e39b4cc4d2ba335077668f1
author Matt Jeanneret <mj3580@att.com> 1575751571 -0500
committer Matt Jeanneret <mj3580@att.com> 1584978851 -0400

VOL-724 VOL-2106 Return of MIB external storage

- New lazy writer in-memory storage class.  Lazy writes mib_db_dict to etcd if dirty. No need to write for every set()
  This is the preferred storage class and enables adapter restart/reconciliation

- New Twisted etcd storage class.  defers to threads given etcd3 blocks.  should improve performance.

- Totally refactored mib_ext_db and mib_alarm_ext_db.
  Before they were totally unusable, but now _ext_db can be used if chosen.  Warning, they do not use the Twisted etcd storage given
  the ripple effect change through most of openomci needed.  So they use the blocking etcd3.  With 100s of onu this
  will cause timeouts.
  Given every set() is a write to etcd use of these classes should be discouraged for performance.

- Modifed mib template task to used async twisted etcd class.  Also update db interface api to include new template functions

- No longer de-jsonify certain complex attributes in in-memory dict_db.
  they must be escaped json string in the field in order for mib storage/recovery to work

Change-Id: I1b77e48ca4185542fa19016200a6cdd5daca0764