Making kamel CLI 90% faster on remote clusters

[nicolaferraro]

Fix #792

Latest released version:

[nferraro@localhost camel-k]$ time kamel-1.0.0-M1 run examples/routes.groovy
integration "routes" created

real    0m16.353s
user    0m0.794s
sys     0m0.068s

With this change:

[nferraro@localhost camel-k]$ time kamel run examples/routes.groovy
integration "routes" created

real    0m1.898s
user    0m0.508s
sys     0m0.036s

I.e. from 16 seconds to just ~ 2 seconds.

This is fast because it does not initialize all kubernetes custom resources available in the cluster (~50 on a standard OpenShift installation) but focuses on the 5 resource groups that our CLI needs.

Only drawback is that we should remember to sync the set of allowed API groups (you get a unknown-resource error in case you use a new group from the CLI client).

Release Note

Improved kamel CLI experience with remote clusters (90% faster)

[astefanutti]

Very useful when doing demos at conferences with bad wifi and clusters thousand kilometers away 😉.

[nicolaferraro]

Very useful when doing demos at conferences with bad wifi and clusters thousand kilometers away .

You can call it "Conference Driven Development" 😆