CLI - Provide an option to accept a connection info when launching Hawtio via CLI

[tadayosi]

There are requests to run a Hawtio instance with a preconfigured connection that is automatically connected with the console, such as https://github.com/orgs/hawtio/discussions/3730. We can satisfy these requests if the CLI (hawtio-jbang) provides an option to specify a connection URL for the remote Jolokia endpoint at start.

hawtio --connection http://localhost:8080/hawtio/jolokia

This option should also help better integrating Hawtio with Kaoto. Kaoto can pass the connection URL to the Hawtio CLI to launch it automatically connecting to a specific remote Camel instance.

[tadayosi]

cc @grgrzybek @lordrip

[eshepelyuk]

It would be great if this option accept multiple values, something like this

hawtio --connection serviceA=https://servicea.io/jolokia/ \
    --connection serviceB=http://localhost:8080/jolokia/

[tadayosi]

@eshepelyuk But one Hawtio instance can only handle one connection by design. You'd need to run multiple Hawtio instances with different ports.

[eshepelyuk]

@eshepelyuk But one Hawtio instance can only handle one connection by design. You'd need to run multiple Hawtio instances with different ports.

but in UI i can add many connections

[tadayosi]

but in UI i can add many connections

Ah, yes you are right. The connection is managed in the session storage so propably we can open a different browser tab per connection to handle multiple connections in parallel. Let's see if we can support the multiple connections request as well. Thanks for your input!