Storing of historical data from server to Elastic search.
- users still able to create their own service that match Elasic API.
- we do not introduce new dependencies to Zabbix and user free to choose service implementation language.
- our support is limited to API.
1. It is required to implement initial elastic schema creation script that will describe all documents and document fields required for Zabbix to work.
2. Change API to match Elastic.
Out of scope, future improvements:
1. allow configuration of data storage per value type
2. allow callbacks to enrich the data with Item name, ID and Host name, ID.