RFR: bot: add liveness handler

[Erik Joelsson]

On Wed, 12 May 2021 19:40:38 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Hi all,
>> 
>> please review this patch that adds a liveness handler to the bot runner's HTTP server. The liveness handler, typically acting on the `/healthz` path, returns `200` if everything is well and `500` otherwise.
>> 
>> Thanks,
>> Erik
>
> bot/src/main/java/org/openjdk/skara/bot/BotRunner.java line 241:
> 
>> 239: 
>> 240:     boolean isHealthy() {
>> 241:         return true;
> 
> I think this implementation is a tad optimistic regarding the health of the runner. :) But I also think defining healthy can be tricky.

I don't have any better idea right now. We may want to revisit this later.

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PR: https://git.openjdk.java.net/skara/pull/1155