DispatchStepDecorator

Wraps a single step of the dispatch chain so instrumentation can measure it.

A decorator is handed each named step, a middleware or the reducer, and returns a replacement that does whatever timing or bookkeeping it needs around the original.

Usage:

val decorator = DispatchStepDecorator { name, step ->
    { action ->
        val start = currentTimeMillis()
        try {
            step(action)
        } finally {
            println("$name took ${currentTimeMillis() - start}ms")
        }
    }
}

See also