mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-12-23 13:25:39 +00:00
start migrating switch to the actor model
This commit is contained in:
Arceliar
parent
b337228aa4
commit
498bc395e2
@ -19,6 +19,8 @@ import (
|
||||
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
|
||||
"github.com/yggdrasil-network/yggdrasil-go/src/util"
|
||||
|
||||
"github.com/Arceliar/phony"
|
||||
)
|
||||
|
||||
const (
|
||||
@ -172,12 +174,13 @@ type switchTable struct {
|
||||
data switchData //
|
||||
updater atomic.Value // *sync.Once
|
||||
table atomic.Value // lookupTable
|
||||
phony.Actor // Owns the below
|
||||
packetIn chan []byte // Incoming packets for the worker to handle
|
||||
idleIn chan switchPort // Incoming idle notifications from peer links
|
||||
admin chan func() // Pass a lambda for the admin socket to query stuff
|
||||
queues switch_buffers // Queues - not atomic so ONLY use through admin chan
|
||||
queueTotalMaxSize uint64 // Maximum combined size of queues
|
||||
toRouter chan []byte // Packets to be sent to the router
|
||||
idle map[switchPort]time.Time // idle peers
|
||||
}
|
||||
|
||||
// Minimum allowed total size of switch queues.
|
||||
@ -199,7 +202,7 @@ func (t *switchTable) init(core *Core) {
|
||||
t.idleIn = make(chan switchPort, 1024)
|
||||
t.admin = make(chan func())
|
||||
t.queueTotalMaxSize = SwitchQueueTotalMinSize
|
||||
t.toRouter = make(chan []byte, 1)
|
||||
t.idle = make(map[switchPort]time.Time)
|
||||
}
|
||||
|
||||
// Safely gets a copy of this node's locator.
|
||||
@ -653,12 +656,13 @@ func (t *switchTable) bestPortForCoords(coords []byte) switchPort {
|
||||
// Handle an incoming packet
|
||||
// Either send it to ourself, or to the first idle peer that's free
|
||||
// Returns true if the packet has been handled somehow, false if it should be queued
|
||||
func (t *switchTable) handleIn(packet []byte, idle map[switchPort]time.Time) bool {
|
||||
func (t *switchTable) _handleIn(packet []byte, idle map[switchPort]time.Time) bool {
|
||||
coords := switch_getPacketCoords(packet)
|
||||
closer := t.getCloser(coords)
|
||||
if len(closer) == 0 {
|
||||
// TODO? call the router directly, and remove the whole concept of a self peer?
|
||||
t.toRouter <- packet
|
||||
self := t.core.peers.getPorts()[0]
|
||||
self.sendPacketsFrom(t, [][]byte{packet})
|
||||
return true
|
||||
}
|
||||
var best *peer
|
||||
@ -731,7 +735,7 @@ type switch_buffers struct {
|
||||
closer []closerInfo // Scratch space
|
||||
}
|
||||
|
||||
func (b *switch_buffers) cleanup(t *switchTable) {
|
||||
func (b *switch_buffers) _cleanup(t *switchTable) {
|
||||
for streamID, buf := range b.bufs {
|
||||
// Remove queues for which we have no next hop
|
||||
packet := buf.packets[0]
|
||||
@ -773,14 +777,14 @@ func (b *switch_buffers) cleanup(t *switchTable) {
|
||||
// Handles incoming idle notifications
|
||||
// Loops over packets and sends the newest one that's OK for this peer to send
|
||||
// Returns true if the peer is no longer idle, false if it should be added to the idle list
|
||||
func (t *switchTable) handleIdle(port switchPort) bool {
|
||||
func (t *switchTable) _handleIdle(port switchPort) bool {
|
||||
to := t.core.peers.getPorts()[port]
|
||||
if to == nil {
|
||||
return true
|
||||
}
|
||||
var packets [][]byte
|
||||
var psize int
|
||||
t.queues.cleanup(t)
|
||||
t.queues._cleanup(t)
|
||||
now := time.Now()
|
||||
for psize < 65535 {
|
||||
var best string
|
||||
@ -824,79 +828,52 @@ func (t *switchTable) handleIdle(port switchPort) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
// The switch worker does routing lookups and sends packets to where they need to be
|
||||
func (t *switchTable) doWorker() {
|
||||
sendingToRouter := make(chan []byte, 1)
|
||||
go func() {
|
||||
// Keep sending packets to the router
|
||||
self := t.core.peers.getPorts()[0]
|
||||
for bs := range sendingToRouter {
|
||||
// TODO remove this ugly mess of goroutines if/when the switch becomes an actor
|
||||
<-self.SyncExec(func() { self._sendPackets([][]byte{bs}) })
|
||||
func (t *switchTable) _packetIn(bytes []byte) {
|
||||
// Try to send it somewhere (or drop it if it's corrupt or at a dead end)
|
||||
if !t._handleIn(bytes, t.idle) {
|
||||
// There's nobody free to take it right now, so queue it for later
|
||||
packet := switch_packetInfo{bytes, time.Now()}
|
||||
streamID := switch_getPacketStreamID(packet.bytes)
|
||||
buf, bufExists := t.queues.bufs[streamID]
|
||||
buf.packets = append(buf.packets, packet)
|
||||
buf.size += uint64(len(packet.bytes))
|
||||
t.queues.size += uint64(len(packet.bytes))
|
||||
// Keep a track of the max total queue size
|
||||
if t.queues.size > t.queues.maxsize {
|
||||
t.queues.maxsize = t.queues.size
|
||||
}
|
||||
}()
|
||||
go func() {
|
||||
// Keep taking packets from the idle worker and sending them to the above whenever it's idle, keeping anything extra in a (fifo, head-drop) buffer
|
||||
var buf [][]byte
|
||||
var size int
|
||||
for {
|
||||
bs := <-t.toRouter
|
||||
size += len(bs)
|
||||
buf = append(buf, bs)
|
||||
for len(buf) > 0 {
|
||||
select {
|
||||
case bs := <-t.toRouter:
|
||||
size += len(bs)
|
||||
buf = append(buf, bs)
|
||||
for size > int(t.queueTotalMaxSize) {
|
||||
size -= len(buf[0])
|
||||
util.PutBytes(buf[0])
|
||||
buf = buf[1:]
|
||||
}
|
||||
case sendingToRouter <- buf[0]:
|
||||
size -= len(buf[0])
|
||||
buf = buf[1:]
|
||||
}
|
||||
t.queues.bufs[streamID] = buf
|
||||
if !bufExists {
|
||||
// Keep a track of the max total queue count. Only recalculate this
|
||||
// when the queue is new because otherwise repeating len(dict) might
|
||||
// cause unnecessary processing overhead
|
||||
if len(t.queues.bufs) > t.queues.maxbufs {
|
||||
t.queues.maxbufs = len(t.queues.bufs)
|
||||
}
|
||||
}
|
||||
}()
|
||||
t.queues._cleanup(t)
|
||||
}
|
||||
}
|
||||
|
||||
func (t *switchTable) _idleIn(port switchPort) {
|
||||
// Try to find something to send to this peer
|
||||
if !t._handleIdle(port) {
|
||||
// Didn't find anything ready to send yet, so stay idle
|
||||
t.idle[port] = time.Now()
|
||||
}
|
||||
}
|
||||
|
||||
// The switch worker does routing lookups and sends packets to where they need to be
|
||||
func (t *switchTable) doWorker() {
|
||||
t.queues.switchTable = t
|
||||
t.queues.bufs = make(map[string]switch_buffer) // Packets per PacketStreamID (string)
|
||||
idle := make(map[switchPort]time.Time) // this is to deduplicate things
|
||||
for {
|
||||
//t.core.log.Debugf("Switch state: idle = %d, buffers = %d", len(idle), len(t.queues.bufs))
|
||||
select {
|
||||
case bytes := <-t.packetIn:
|
||||
// Try to send it somewhere (or drop it if it's corrupt or at a dead end)
|
||||
if !t.handleIn(bytes, idle) {
|
||||
// There's nobody free to take it right now, so queue it for later
|
||||
packet := switch_packetInfo{bytes, time.Now()}
|
||||
streamID := switch_getPacketStreamID(packet.bytes)
|
||||
buf, bufExists := t.queues.bufs[streamID]
|
||||
buf.packets = append(buf.packets, packet)
|
||||
buf.size += uint64(len(packet.bytes))
|
||||
t.queues.size += uint64(len(packet.bytes))
|
||||
// Keep a track of the max total queue size
|
||||
if t.queues.size > t.queues.maxsize {
|
||||
t.queues.maxsize = t.queues.size
|
||||
}
|
||||
t.queues.bufs[streamID] = buf
|
||||
if !bufExists {
|
||||
// Keep a track of the max total queue count. Only recalculate this
|
||||
// when the queue is new because otherwise repeating len(dict) might
|
||||
// cause unnecessary processing overhead
|
||||
if len(t.queues.bufs) > t.queues.maxbufs {
|
||||
t.queues.maxbufs = len(t.queues.bufs)
|
||||
}
|
||||
}
|
||||
t.queues.cleanup(t)
|
||||
}
|
||||
<-t.SyncExec(func() { t._packetIn(bytes) })
|
||||
case port := <-t.idleIn:
|
||||
// Try to find something to send to this peer
|
||||
if !t.handleIdle(port) {
|
||||
// Didn't find anything ready to send yet, so stay idle
|
||||
idle[port] = time.Now()
|
||||
}
|
||||
<-t.SyncExec(func() { t._idleIn(port) })
|
||||
case f := <-t.admin:
|
||||
f()
|
||||
case e := <-t.reconfigure:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user