func downstreamFn(chain ChainSpec, ctx context.ContextSpec) handleStateFn {
mods := chain.GetModules()
pin := chain.GetCursor()
for i := pin; i >= 0; i-- {
resp, err := mods[i].ProcessResponse(ctx)
if resp != nil {
//log.Printf("Module: %s writing response ...", mods[i].GetId())
ctx.SetHttpResponse(resp)
}
if err != nil {
ctx.SetError(err)
}
}
return finishedFn
}
func upstreamFn(chain ChainSpec, ctx context.ContextSpec) handleStateFn {
mods := chain.GetModules()
for i, mod := range mods {
resp, err := mod.ProcessRequest(ctx)
chain.SetCursor(i)
if resp != nil {
//log.Printf("Module: %s writing response ...", mods[i].GetId())
ctx.SetHttpResponse(resp)
return downstreamFn
}
if err != nil {
//log.Printf("Module: %s found error ...", mods[i].GetId())
ctx.SetError(err)
return errorFoundFn
}
}
log.Printf("Error. At least one module must to respond")
ctx.SetError(errors.FromStatus(http.StatusNoContent))
return errorFoundFn
}