func (comm *Comm) SendFirst(res *cluster.ResolveResult, message *Message) {
node := res.GetFirst()
if node != nil {
comm.SendNode(node, message)
return
}
log.Fatal("Couldn't send message (%s) to first (%s). No node found.\n", message, node)
}
func (comm *Comm) SendOne(res *cluster.ResolveResult, message *Message) {
// TODO: Round robin
node := res.GetOnline(0)
if node != nil {
comm.SendNode(node, message)
return
}
log.Fatal("Couldn't send the message (%s) to one. No node found.\n", message)
}
func (fss *FsService) sendToReplicaNode(resolv *cluster.ResolveResult, req_cb func(node *cluster.Node) *comm.Message) chan os.Error {
toSyncCount := resolv.Count() - 1 // minus one for the master
var syncError os.Error = nil
myNodeId := fss.cluster.MyNode.Id
errChan := make(chan os.Error, 1) // channel used to return data to the messageor
c := make(chan bool, toSyncCount) // channel used to wait for all replicas
if toSyncCount > 0 {
go func() {
for i := 0; i < resolv.Count(); i++ {
node := resolv.Get(i)
if node.Status == cluster.Status_Online && node.Id != myNodeId {
// get the new message
req := req_cb(node)
req.Timeout = 1000 // TODO: Config
req.OnResponse = func(message *comm.Message) {
log.Debug("%d: FSS: Received acknowledge message for message %s\n", fss.cluster.MyNode.Id, req)
c <- true
}
req.OnTimeout = func(last bool) (retry bool, handled bool) {
// TODO: Retry it!
syncError = comm.ErrorTimeout
log.Error("%d: FSS: Couldn't send message to replicate node %s because of a timeout for message %s\n", fss.cluster.MyNode.Id, node, req)
c <- true
return true, false
}
req.OnError = func(message *comm.Message, syncError os.Error) {
log.Error("%d: FSS: Received an error while sending to replica %s for message %s: %d %s\n", fss.cluster.MyNode.Id, req, node, syncError)
c <- true
}
fss.comm.SendNode(node, req)
}
}
// wait for nodes to sync the handoff
for i := 0; i < toSyncCount; i++ {
<-c
}
errChan <- syncError
}()
} else {
errChan <- nil
}
return errChan
}