Get fetches value from the provided environment variable NOTE: This is an implementation of EnvironmentGetter.

GetOrDefault fetches value from the provided environment variable which on empty returns the defaultValue NOTE: os.Getenv is used here instead of os.LookupEnv because it is not required to know if the environment variable is defined on the system.

Lookup looks up an environment variable NOTE: This is an implementation of EnvironmentLookup.

LookupOrFalse looks up an environment variable and returns a string "false" if environment variable is not present.

Set sets the provided environment variable NOTE: This is an implementation of EnvironmentSetter.

Truthy returns boolean based on the environment variable's value The lookup value can be truthy (i.e.

KubeConfig is the ENV variable to fetch kubernetes kubeconfig.

KubeMaster is the ENV variable to fetch kubernetes master's address.

EnvironmentGetter abstracts fetching value from an environment variable.

EnvironmentLookup abstracts looking up an environment variable.

EnvironmentSetter abstracts setting of environment variable.