Eigenda client subsystem logger (#136)

* format: middleware function signatures for better readability

* chore: wrap an error for easier debugging

* chore: give eigenda-client its own logger with subsystem label

server/load_store.go

@@ -95,7 +95,7 @@ func LoadStoreRouter(ctx context.Context, cfg CLIConfig, log log.Logger) (store.
 	} else {
 		var client *clients.EigenDAClient
 		log.Info("Using EigenDA backend")
-		client, err = clients.NewEigenDAClient(log, daCfg.ClientConfig)
+		client, err = clients.NewEigenDAClient(log.With("subsystem", "eigenda-client"), daCfg.ClientConfig)
 		if err != nil {
 			return nil, err
 		}

server/server.go

@@ -58,8 +58,10 @@ func NewServer(host string, port int, router store.IRouter, log log.Logger,
 }
 
 // WithMetrics is a middleware that records metrics for the route path.
-func WithMetrics(handleFn func(http.ResponseWriter, *http.Request) (commitments.CommitmentMeta, error),
-	m metrics.Metricer) func(http.ResponseWriter, *http.Request) error {
+func WithMetrics(
+	handleFn func(http.ResponseWriter, *http.Request) (commitments.CommitmentMeta, error),
+	m metrics.Metricer,
+) func(http.ResponseWriter, *http.Request) error {
 	return func(w http.ResponseWriter, r *http.Request) error {
 		recordDur := m.RecordRPCServerRequest(r.Method)
 
@@ -71,8 +73,10 @@ func WithMetrics(handleFn func(http.ResponseWriter, *http.Request) (commitments.
 }
 
 // WithLogging is a middleware that logs the request method and URL.
-func WithLogging(handleFn func(http.ResponseWriter, *http.Request) error,
-	log log.Logger) func(http.ResponseWriter, *http.Request) {
+func WithLogging(
+	handleFn func(http.ResponseWriter, *http.Request) error,
+	log log.Logger,
+) func(http.ResponseWriter, *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		log.Info("request", "method", r.Method, "url", r.URL)
 		err := handleFn(w, r)

store/eigenda.go

@@ -143,7 +143,7 @@ func (e EigenDAStore) Verify(key []byte, value []byte) error {
 	// verify kzg data commitment
 	err = e.verifier.VerifyCommitment(cert.BlobHeader.Commitment, encodedBlob)
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to verify commitment: %w", err)
 	}
 
 	// verify DA certificate against on-chain