WaitHeader

The Wow-Wait and Wow-Wait-Timeout headers.

plan := hop (">" hop)*
hop  := "accepted" ["(" ctx ")"]
      | "committed" ["(" ctx ")"]
      | "snapshot" ["(" ctx ")"]
      | "handled(" [ctx "/"] subscription ")"

Keywords are case-insensitive and white space around the tokens is ignored: handled(order/payment-saga) > committed(inventory). A subscription is named as in the Manifest and may hold dots (processor.function), so the context of a handled hop is set apart by /. handled(wow.snapshot) is the same hop as snapshot. The timeout is <n>ms, <n>s, <n>m or an ISO-8601 duration (PT10S), and positive.

format prints a plan as parse reads it, the inverse of parse.