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controller.go
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controller.go
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package sputnik
var _ BlockCommunicator = &controller{}
type controller struct {
descriptor BlockDescriptor
block *Block
actBlks activeBlocks
mpr *msgProcessor
}
func attachController(resp string, actBlks activeBlocks) {
abl, _ := actBlks.getABl(resp)
cn := new(controller)
cn.descriptor = abl.descriptor
cn.block = abl.block
cn.mpr = newMsgProcessor(cn.block.onMsg)
cn.actBlks = actBlks
abl.controller = cn
}
func (cn *controller) Communicator(resp string) (bc BlockCommunicator, exists bool) {
abl, exists := cn.actBlks.getABl(resp)
if !exists {
return nil, false
}
return abl.controller, true
}
func (cn *controller) Descriptor() BlockDescriptor {
return cn.descriptor
}
func (cn *controller) Send(msg Msg) bool {
if msg == nil {
return false
}
if cn.block.onMsg == nil {
return false
}
sok := cn.mpr.submit(msg)
return sok
}
func (cn *controller) ServerConnected(sc ServerConnection) bool {
if cn.block.onConnect == nil {
return false
}
go cn.block.onConnect(sc)
return true
}
func (cn *controller) serverDisconnected() bool {
if cn.block.onDisconnect == nil {
return false
}
go cn.block.onDisconnect()
return true
}
func (cn *controller) Finish() {
icn := cn.actBlks[0].controller
resp := cn.descriptor.Responsibility
// This message will be processed by initiator:
fm := make(Msg)
fm["__name"] = finishedMsg
fm["__resp"] = resp
// Dedicate goroutine for finish of the block
go func(fn Finish, bc BlockCommunicator, m Msg, pr *msgProcessor) {
fn(false)
if pr != nil {
pr.cancel()
}
icn.Send(fm) // Send message to initiator about finished block
}(cn.block.finish, icn, fm, cn.mpr)
return
}