View Source Kubereq.Step.LabelSelector (kubereq v0.1.7)
Req step to format label selectors.
Label selectors are used to filter list and watch operations by resource labels. The concept is explained on the Kubernetes documentation Labels and Selectors
The functions for listing and watching resources accept an option
:label_selectors
as a list of strings or tuples.
Equality-based requirements
The following are equivalent label selectors for equality:
"environment = production"
{"environment", "production"}
{"environment", {:eq, "production"}}
The following are equivalent label selectors for inequality:
"tier != frontend"
{"tier", {:neq, "frontend"}}
{"tier", {:ne, "frontend"}}
Set-based requirements
The following are equivalent label selectors for In
requirements:
"environment in (production, qa)"
{"environment", ["production", "qa"]}
{"environment", {:in, ["production", "qa"]}}
The following are equivalent label selectors for NotIn
requirements:
"tier notin (frontend, backend)"
{"tier", {:notin, ["frontend", "backend"]}}
{"tier", {:not_in, ["frontend", "backend"]}}
The following are equivalent label selectors for Exists
requirements:
"partition"
{"partition"}
{"partition", :exists}
The following are equivalent label selectors for not DoesNotExist
requirements:
"!partition"
{"!partition"}
{"partition", :notexists}
{"partition", :not_exists}
Summary
Functions
@spec attach(Req.Request.t()) :: Req.Request.t()