Support for Gerrit 3

[fdegir]

Description

We at Nordix Community intend to start prototyping with Eiffel.

One of the aspects we want to try out is to publish SCM events (EiffelSourceChangeCreatedEvent and
EiffelSourceChangeSubmittedEvent) from Nordix Community Gerrit Instance.

However, the current version of Gerrit supported by eiffel-gerrit-plugin seems to be 2.X and we use Gerrit 3.4.1 in Nordix Community.

We are wondering if community has plans to introduce support for later versions of Gerrit API?
If so, where can we learn more about this effort and contribute?
If not, how can we contribute this support?

This issue is related to an existing issue, #25, aiming to enable introducing support for different versions of Gerrit API, however that issue hasn't received any answers yet.

Motivation

There are different users of the plugin that requires support for different version of gerrit api.

Exemplification

Communities support different versions depending on the users' needs and sometimes this support is introduced by the users themselves.

Benefits

Different versions of Gerrit can be supported, increasing the adoption of the plugin and Eiffel in general.

Possible Drawbacks

More versions to maintain.

[fdegir]

/cc @m-linner-ericsson @e-backmark-ericsson @magnusbaeck

[sselberg]

We had the same needs (Gerrit 3.4.1), and are also aiming to model full git DAGs with Eiffel, which this plugin doesn't do.
Hence we are in the process of developing an Eiffel event producing plugin that we aim to Open-Source to the Gerrit community once it's up and running and the worst bugs are sorted out.
Time-schedule for open-source is not set but with a little luck it could be done before Q1 2022 (no promises).

[fdegir]

This is great to hear @sselberg.
Please let me know if/when you need an additional tester to what you are working on so we can try and pass our feedback.

[m-linner-ericsson]

The main reason for writing the plugin for 2.14 was for use of that specific version. Now things change so we'll see if we can update the plugin.

[sselberg]

@fdegir it took a while but we have now started the process of Open Source:ing the internal plugin that we have been running in production for > 2 years.
Will be announced in the Gerrit community within a couple of weeks:
https://groups.google.com/forum/#!forum/repo-discuss

[e-backmark-ericsson]

Once that plugin is published, it should also be added to our landscape on https://eiffel-community.github.io/community.html

[sselberg]

Plugin is now contributed to the Gerrit community:
https://gerrit-review.googlesource.com/admin/repos/plugins/events-eiffel,general

[SantoshNC68]

I was thinking to patch the existing eiffel-gerrit-plugin, but it is better to maintain a single project.
Should we go with the above gerrit plugin or do we still continue to keep this eiffel-gerrit-plugin?

[e-backmark-ericsson]

Not sure. I haven't verified if the newly contributed Gerrit plugin is compatible with the one we implemented in this repo some time back. If they are not fully compatible there could be a reason to keep both. Until we know that, I believe it would make sense to keep this plugin updated with new Gerrit releases.