Lookup containerPort number by its named port name.

Lookup containerPort number from Service port number It implements the handling of resolving container named port, as well as ignoring targetPort when clusterIP=None It returns an error when a named port can't find a match (with -1 returned), or when the service does not declare such port (with the input port number returned).

ParseFileSource parses the source given.

ParseLiteralSource parses the source key=val pair into its component pieces.

ParseRFC3339 parses an RFC3339 date in either RFC3339Nano or RFC3339 format.