// Rcv method of the composed handler.
func (c *ComposedHandler) Rcv(msg bh.Msg, ctx bh.RcvContext) error {
var err error
for i := range c.Handlers {
if c.Isolate {
rctx := composedRcvContext{RcvContext: ctx, prefix: strconv.Itoa(i)}
err = c.callRcv(c.Handlers[i], msg, rctx)
} else {
err = c.callRcv(c.Handlers[i], msg, ctx)
}
switch c.Composer(msg, ctx, err) {
case Abort:
ctx.AbortTx()
return nil
case Commit:
ctx.CommitTx()
return nil
case Continue:
if i == len(c.Handlers)-1 {
if err == nil {
ctx.CommitTx()
} else {
ctx.AbortTx()
}
return nil
}
case ContinueOrAbort:
if i == len(c.Handlers)-1 {
ctx.AbortTx()
return nil
}
}
}
return nil
}