These are mostly helper code for setting up env vars. There is a single
file copied verbatim, although much of this downward api stuff is a
copy. We may want to pull this out and do a direct copy of the the code
so it is easier to update and work with upstream to have a shared
package that lives outside of k8s.io/kubernetes for downward api.
Try to stop depending on kubernetes/kubenetes. Copy golang/expansion
into the virtual-kubelet repo. The upstream code looks super stable, so
there is little harm to copy it here.
Signed-off-by: Miek Gieben <miek@miek.nl>
This copies and pastes the loop that used to exist in
func populateEnvironmentVariables(..) {
...
for _, env := range container.Env {
... <--- This code
}
}
Into getEnvironmentVariableValue. getEnvironmentVariableValue
returns val, err, where val is a pointer to a string
to indicate optionality.
This creates a new package -- podutils. The env var related code
doesn't really have any business being part of the node package,
and to create a separation of concerns, faster tests, and just
general code isolation and cleanliness, we can move the env
var related code into this package. This change is purely hygiene,
and not logic related.
For node, the package is under internal, because the constructor
references manager, which is an internal package.
