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Refactor event system

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This commit is contained in:
adman
2026-03-08 13:56:36 +01:00
parent 2eee7bde24
commit 165075ea02
7 changed files with 97 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
client/client.go
+1 -1
View File
@@ -15,7 +15,7 @@ func Connect(addr string) (ret *proto.Conn, err error) {
return
}
ret.SetState(proto_base.Handshaking)
ret.CompressionThreshold = -1
ret.SetCompressionThreshold(-1)
ret.Actor = proto_base.Client
ret.Conn, err = net.Dial("tcp", addr)
if err != nil {
client/login.go
+1 -1
View File
@@ -80,7 +80,7 @@ func (s *LoginClient) OnStart(_ event.Start) (err error) {
}
func (s *LoginClient) OnCompress(compress *v1_21_8.LoginToClientPacketCompress) (err error) {
s.CompressionThreshold = compress.Threshold
s.SetCompressionThreshold(compress.Threshold)
return
}
event/event_bus.go
+26 -1
View File
@@ -2,16 +2,27 @@
package event
import (
"context"
"errors"
"fmt"
"log/slog"
"reflect"
"strings"
"time"
)
const (
LoopsPerSecond = 100 // i dunno seems reasonable
TimePerLoop = time.Second / LoopsPerSecond
)
type Loop struct {
handlerFunctions map[reflect.Type][]reflect.Value
Handlers []any
Ctx context.Context
ErrChan chan error
cancel context.CancelFunc
}
type Unhandled struct {
@@ -107,15 +118,18 @@ func (l *Loop) Fire(event any) (err error) {
return
}
func (l *Loop) Start() (err error) {
func (l *Loop) startLoop() (err error) {
_ = *l // exit early on nil loop
l.UpdateHandlerFunctions()
err = l.Fire(Start{})
for err == nil {
tickStartTime := time.Now()
err = l.Fire(Tick{})
if err != nil {
break
}
time.Sleep(TimePerLoop - time.Since(tickStartTime))
}
if errors.Is(err, HandlerDoneErr{}) {
err = errors.Unwrap(err)
@@ -126,3 +140,14 @@ func (l *Loop) Start() (err error) {
}
return
}
func (l *Loop) Start() (err error) {
l.ErrChan = make(chan error)
l.Ctx, l.cancel = context.WithCancel(context.Background())
go func() {
l.ErrChan <- l.startLoop()
}()
err = <-l.ErrChan
l.cancel()
return
}
proto/connection.go
+42 -2
View File
@@ -16,6 +16,7 @@ import (
var BadPacketTypeError = errors.New("bad packet type")
var BadPacketIdError = errors.New("bad packet id")
var PacketNotFullyDecodedError = errors.New("packet not fully decoded")
var ErrContextDone = errors.New("context done")
// UnCodablePacket represents a packet that could not be decoded.
type UnCodablePacket struct {
@@ -42,6 +43,25 @@ type Conn struct {
Actor proto_base.Actor
Version string
ProtocolVersion int32
receiveRoutine bool
packetCh chan proto_base.EncodeDecodeAble
}
func (c *Conn) ReceiveJob() {
for {
select {
case <-c.Ctx.Done():
return
default:
packet, err := c.Receive()
if err != nil {
c.ErrChan <- err
return
}
c.packetCh <- packet
}
}
}
func (c *Conn) SetState(state proto_base.State) {
@@ -62,10 +82,17 @@ func (c *Conn) SetVersion(version string) (err error) {
if err != nil {
return
}
c.ProtocolVersion = int32(versionData.Version)
c.ProtocolVersion = versionData.Version
return
}
func (c *Conn) ActivateReceiveRoutine() {
c.receiveRoutine = true
c.packetCh = make(chan proto_base.EncodeDecodeAble, 100) // i dunno how many to buffer 100 seems reasonable
go c.ReceiveJob()
}
func (c *Conn) Send(packet proto_base.EncodeDecodeAble) (err error) {
slog.Debug("send", "actor", c.Actor, "packet", fmt.Sprintf("%#v", packet))
switch packet := packet.(type) {
@@ -120,12 +147,25 @@ func (c *Conn) Receive() (packet proto_base.EncodeDecodeAble, err error) {
}
func (c *Conn) OnTick(_ event.Tick) (err error) {
packet, err := c.Receive()
var packet proto_base.EncodeDecodeAble
if c.receiveRoutine {
select {
case packet = <-c.packetCh:
slog.Debug("receive", "actor", c.Actor, "packet", fmt.Sprintf("%#v", packet))
err = c.Loop.Fire(packet)
case <-c.Ctx.Done():
err = ErrContextDone
return
default:
}
} else {
packet, err = c.Receive()
if err != nil {
return
}
slog.Debug("receive", "actor", c.Actor, "packet", fmt.Sprintf("%#v", packet))
err = c.Loop.Fire(packet)
}
return
}
proto/raw_conn.go
+19 -4
View File
@@ -8,6 +8,7 @@ import (
"errors"
"io"
"net"
"sync"
"github.com/admin-else/strom/crypto"
"github.com/admin-else/strom/proto_base"
@@ -17,15 +18,29 @@ type RawConn struct {
net.Conn
R io.Reader
W io.Writer
CompressionThreshold int32
compressionThreshold int32
CompressionThresholdMut sync.RWMutex
}
func (c *RawConn) SetCompressionThreshold(threshold int32) {
c.CompressionThresholdMut.Lock()
defer c.CompressionThresholdMut.Unlock()
c.compressionThreshold = threshold
}
func (c *RawConn) GetCompressionThreshold() int32 {
c.CompressionThresholdMut.RLock()
defer c.CompressionThresholdMut.RUnlock()
return c.compressionThreshold
}
func (c *RawConn) SendRaw(rawPacketBytes []byte) (err error) {
//fmt.Println("send:", rawPacketBytes)
var packetBytes []byte
if c.CompressionThreshold > 0 {
threshold := c.GetCompressionThreshold()
if threshold > 0 {
packetBuffer := bytes.NewBuffer(nil)
if int32(len(rawPacketBytes)) >= c.CompressionThreshold {
if int32(len(rawPacketBytes)) >= threshold {
err = proto_base.EncodeVarInt(packetBuffer, int32(len(rawPacketBytes)))
if err != nil {
return
@@ -80,7 +95,7 @@ func (c *RawConn) ReceiveRaw() (packetBytes []byte, err error) {
return
}
rawPacketBuffer := bytes.NewBuffer(rawPacketBytes)
if c.CompressionThreshold > 0 {
if c.GetCompressionThreshold() > 0 {
var packetLen int32
packetLen, err = proto_base.DecodeVarInt(rawPacketBuffer)
if err != nil {
server/login_server.go
+1 -5
View File
@@ -90,10 +90,6 @@ func (l *LoginServer) SetCompressionThreshold(threshold int32) (err error) {
func (l *LoginServer) OnLoginStart(packet *v1_21_8.LoginToServerPacketLoginStart) (err error) {
l.Requested = NameAndUUID{packet.Username, packet.PlayerUUID}
//err = l.SetCompressionThreshold(l.CompressionThreshold)
//if err != nil {
// return
//}
if l.Given == nil {
l.Given = &l.Requested
}
@@ -124,7 +120,7 @@ func (l *LoginServer) OnCycle(_ event.Tick) (err error) {
return
}
func (s *LoginServer) OnClose(_ event.Close) (err error) {
func (l *LoginServer) OnClose(_ event.Close) (err error) {
return
}
server/server.go
+1 -1
View File
@@ -14,7 +14,7 @@ func Servee(c net.Conn) (ret *proto.Conn) {
ret = &proto.Conn{}
_ = ret.SetVersion("1.21.8") // cant fail
ret.SetState(proto_base.Handshaking)
ret.CompressionThreshold = -1
ret.SetCompressionThreshold(-1)
ret.Actor = proto_base.Servee
ret.Conn = c
ret.R = c