This version contains the following:
1. wraps the main root Kn command to support plugin
2. plugins are any executable in kn's config new pluginDir
variable which defaults to $PATH
3. plugins must have name kn-*
4. 'kn plugin list' sub-command to list found kn plugins
5. skips any kn plugins found with name that match core
commands, e.g., kn-service would be ignored
6. can execute any valid kn plugins found, e.g.,
`kn valid` where the plugin file `kn-valid` is in path
specified in 2.
7. unit tests (using gotest.tools)
And is missing:
1. integration tests
2. plugin install command
3. plugin repository command
4. plugin / Knative server version negotiation
5. anything else we agree on in plugin req doc
I plan to create issues for the things missing so we don't
end up with an even bigger PR. It's already big as is but is a
good MVP as per plugins requirement doc.
Explores all sub-commands from root and adds a RunE for all
commands that are groups with child commands and without a RunE.
The added RunE will return the correct errors when the command
is called with empty sub-command or with an unknown sub-command.
It will also print the command help message first.
Added a gotest.tools test for root.go.
dr.max