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.