partial subscriptions

not really partial. they just happen per peripheral now

telemetry/data.go

@@ -23,13 +23,6 @@ type FieldMapper struct {
 	Transform func(any) uint64
 }
 
-// VirtualField will derive data from telemetry primitives
-// So fuel per lap predictions, compound gauge lights and so on
-type VirtualField interface {
-	Process(td *TelemetryData)
-	EnsureSubscribed() []FieldID
-}
-
 // NOTE: Update the iracing SDK to write data to the same map ALWAYS, then
 // I can bind that address and read directly from there on the transform
 
@@ -228,16 +221,18 @@ func GetFieldID(name string) (FieldID, bool) {
 }
 
 // TelemetryData is
-// I need to find a way of having the values be per window or some other
 type TelemetryData struct {
 	Values              [MaxFields]TelemetryField
-	ActiveBinds         []BoundField
-	VirtualBinds        []VirtualField
+	ActiveBinds         map[FieldID]BoundField
+	VirtualBinds        map[string]VirtualField
 	InitialTime         time.Time
 	PenultimateDataPoll time.Time
 	LastDataPoll        time.Time
 }
 
 func NewTelemetryData() *TelemetryData {
-	return &TelemetryData{}
+	return &TelemetryData{
+		ActiveBinds:  make(map[FieldID]BoundField, MaxFields),
+		VirtualBinds: make(map[string]VirtualField),
+	}
 }

telemetry/fuel_calculator.go

@@ -5,6 +5,8 @@ import (
 	"log/slog"
 	"strconv"
 	"sync"
+
+	"esdi/constants"
 )
 
 // NOTE: for managing fuel consumption and predictions we need to filter out
@@ -264,3 +266,7 @@ func (fc *FuelCalculator) resetHistory() {
 func (fc *FuelCalculator) EnsureSubscribed() []FieldID {
 	return []FieldID{FuelLevel, LapNumber}
 }
+
+func (fc *FuelCalculator) Name() string {
+	return constants.FuelCalculatorName
+}

telemetry/provider.go

@@ -6,7 +6,7 @@ import "time"
 type TelemetryProvider interface {
 	StopStream()
 	Stream() (<-chan TelemetryData, error)
-	Subscribe([]FieldID)
+	Subscribe([]FieldID) []string
 	IsAlive(time.Duration) bool
 	Name() string
 	Close()

telemetry/rpm_lights.go

@@ -1,5 +1,7 @@
 package telemetry
 
+import "esdi/constants"
+
 type RPMLights struct {
 	State string
 }
@@ -28,3 +30,7 @@ func (rl *RPMLights) Process(td *TelemetryData) {
 func (rl *RPMLights) EnsureSubscribed() []FieldID {
 	return []FieldID{RPM}
 }
+
+func (rl *RPMLights) Name() string {
+	return constants.RPMLightsName
+}

telemetry/virtual_field.go

@@ -0,0 +1,9 @@
+package telemetry
+
+// VirtualField will derive data from telemetry primitives
+// So fuel per lap predictions, compound gauge lights and so on
+type VirtualField interface {
+	Name() string
+	Process(td *TelemetryData)
+	EnsureSubscribed() []FieldID
+}