use default config

cmd/poktrolld/cmd/config.go

@@ -21,12 +21,10 @@ type PoktrollAppConfig struct {
 }
 
 // poktrollAppConfigDefaults sets default values to render in `app.toml`.
-// Checkout `customAppConfigTemplate()` for additional information about each setting.
+// Checkout `customAppConfigTemplate()` for additional information about each config parameter.
 func poktrollAppConfigDefaults() PoktrollAppConfig {
 	return PoktrollAppConfig{
-		Telemetry: telemetry.PoktrollTelemetryConfig{
-			CardinalityLevel: "medium",
-		},
+		Telemetry: telemetry.DefaultConfig(),
 	}
 }
 
@@ -104,7 +102,6 @@ func initCometBFTConfig() *cmtcfg.Config {
 // return "", nil if no custom configuration is required for the application.
 // TODO_MAINNET: Reconsider values - check `app.toml` for possible options.
 func initAppConfig() (string, interface{}) {
-	// The following code snippet is just for reference.
 	type CustomAppConfig struct {
 		serverconfig.Config `mapstructure:",squash"`
 		Poktroll            PoktrollAppConfig `mapstructure:"poktroll"`
@@ -140,6 +137,7 @@ func initAppConfig() (string, interface{}) {
 	srvCfg.GRPC.Enable = true
 	srvCfg.GRPCWeb.Enable = true
 
+	// Create the custom config with both server and poktroll configs
 	customAppConfig := CustomAppConfig{
 		Config:   *srvCfg,
 		Poktroll: poktrollAppConfigDefaults(),

telemetry/defaults.go

@@ -0,0 +1,14 @@
+package telemetry
+
+// Default configuration values for telemetry
+const (
+	// DefaultCardinalityLevel represents the default cardinality level for metrics collection
+	DefaultCardinalityLevel = "medium"
+)
+
+// DefaultConfig returns the default telemetry configuration
+func DefaultConfig() PoktrollTelemetryConfig {
+	return PoktrollTelemetryConfig{
+		CardinalityLevel: DefaultCardinalityLevel,
+	}
+}

telemetry/telemetry.go

@@ -11,16 +11,31 @@ import (
 // Set once on initialization and remains constant during runtime.
 var globalTelemetryConfig PoktrollTelemetryConfig
 
-// PoktrollTelemetryConfig represents the telemetry protion of the custom poktroll config section in `app.toml`.
+// PoktrollTelemetryConfig represents the telemetry portion of the custom poktroll config section in `app.toml`.
 type PoktrollTelemetryConfig struct {
 	CardinalityLevel string `mapstructure:"cardinality-level"`
 }
 
 // New sets the globalTelemetryConfig for telemetry package.
 func New(appOpts servertypes.AppOptions) error {
-	// Extract the map from appOpts.
-	// `poktroll.telemetry` comes from `app.toml` which is parsed into a map.
-	telemetryMap := appOpts.Get("poktroll.telemetry").(map[string]interface{})
+	// Get the poktroll config section. If it doesn't exist, use defaults
+	poktrollConfig := appOpts.Get("poktroll")
+	if poktrollConfig == nil {
+		globalTelemetryConfig = DefaultConfig()
+		return nil
+	}
+
+	// Try to get the telemetry subsection
+	poktrollMap, ok := poktrollConfig.(map[string]interface{})
+	if !ok {
+		return fmt.Errorf("invalid poktroll config format: expected map[string]interface{}, got %T", poktrollConfig)
+	}
+
+	telemetryMap, ok := poktrollMap["telemetry"].(map[string]interface{})
+	if !ok {
+		globalTelemetryConfig = DefaultConfig()
+		return nil
+	}
 
 	// Use mapstructure to decode the map into the struct
 	if err := mapstructure.Decode(telemetryMap, &globalTelemetryConfig); err != nil {