mirror of
https://github.com/jwetzell/showbridge-go.git
synced 2026-04-26 21:05:30 +00:00
110 lines
2.3 KiB
Go
110 lines
2.3 KiB
Go
package module
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import (
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"context"
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"errors"
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"log/slog"
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"net"
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"time"
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"github.com/jwetzell/psn-go"
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"github.com/jwetzell/showbridge-go/internal/common"
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"github.com/jwetzell/showbridge-go/internal/config"
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)
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type PSNClient struct {
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config config.ModuleConfig
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conn *net.UDPConn
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ctx context.Context
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router common.RouteIO
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decoder *psn.Decoder
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logger *slog.Logger
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cancel context.CancelFunc
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}
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func init() {
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RegisterModule(ModuleRegistration{
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Type: "psn.client",
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Title: "PosiStageNet Client",
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New: func(config config.ModuleConfig) (common.Module, error) {
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return &PSNClient{config: config, decoder: psn.NewDecoder(), logger: CreateLogger(config)}, nil
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},
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})
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}
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func (pc *PSNClient) Id() string {
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return pc.config.Id
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}
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func (pc *PSNClient) Type() string {
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return pc.config.Type
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}
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func (pc *PSNClient) Start(ctx context.Context) error {
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pc.logger.Debug("running")
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router, ok := ctx.Value(common.RouterContextKey).(common.RouteIO)
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if !ok {
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return errors.New("psn.client unable to get router from context")
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}
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pc.router = router
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moduleContext, cancel := context.WithCancel(ctx)
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pc.ctx = moduleContext
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pc.cancel = cancel
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addr, err := net.ResolveUDPAddr("udp", "236.10.10.10:56565")
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if err != nil {
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return err
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}
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client, err := net.ListenMulticastUDP("udp", nil, addr)
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if err != nil {
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return err
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}
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defer client.Close()
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pc.conn = client
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buffer := make([]byte, 2048)
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for {
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select {
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case <-pc.ctx.Done():
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// TODO(jwetzell): cleanup?
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pc.logger.Debug("done")
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return nil
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default:
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pc.conn.SetDeadline(time.Now().Add(time.Millisecond * 200))
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numBytes, _, err := pc.conn.ReadFromUDP(buffer)
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if err != nil {
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//NOTE(jwetzell) we hit deadline
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if opErr, ok := err.(*net.OpError); ok && opErr.Timeout() {
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continue
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}
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return err
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}
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if numBytes > 0 {
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message := buffer[:numBytes]
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err := pc.decoder.Decode(message)
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if err != nil {
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pc.logger.Error("problem decoding psn traffic", "error", err)
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}
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if pc.router != nil {
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// TODO(jwetzell): better input handling
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for _, tracker := range pc.decoder.Trackers {
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pc.router.HandleInput(pc.ctx, pc.Id(), tracker)
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}
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} else {
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pc.logger.Error("has no router")
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}
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}
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}
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}
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}
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func (pc *PSNClient) Stop() {
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pc.cancel()
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}
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