Document how to add the full text search to ocis

[micbar]

Description

The infinite Scale single binary includes a "ready-to-use" search service. This indexes the all files metadata in ocis (file names. folder names, tags)

The search service can also index file content when admins add a third party dependency for the content parsig.

Scope

Deployment example: ocis wopi

Relevant Lines

• https://github.com/owncloud/ocis/blob/master/deployments/examples/ocis_wopi/docker-compose.yml#L218-L222

• https://github.com/owncloud/ocis/blob/master/deployments/examples/ocis_wopi/docker-compose.yml#L76-L77

• [ ] Document what the default features of the search service are (metadata indexing)

• [ ] Document what needs to be done do add content indexing

  • [ ] Add Apache tika as a extra container (https://tika.apache.org/)
  • [ ] Explain how to configure the ocis search service to use tika
  • [ ] Short notice about how this increases the index size
  • [ ] Explain how and when to use the re-index command
  • [ ] Impacts and handling of a growing index size

Missing artifacts

• [x] Needs Readme.md for the search service

[mmattel]

References: https://github.com/owncloud/ocis/issues/5481 (Search Service - wopi - docker compose - TIKA URL) https://github.com/owncloud/ocis/issues/5482 (Search service envvar questions)

[mmattel]

need to reopen as #366 was only a part of the game

[mmattel]

Fust for further reading: Index considerations Estimating the size of the FTS index