misc(cel-shed): add a data hash exists | get helper to cel-shed

cmd/cel-shed/hash_presence.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"context"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"github.com/celestiaorg/celestia-node/nodebuilder"
+	"github.com/celestiaorg/celestia-node/share"
+	"github.com/celestiaorg/celestia-node/share/eds"
+
+	"github.com/spf13/cobra"
+)
+
+var path string
+
+func init() {
+	rootCmd.PersistentFlags().StringVar(&path, "node.store", "", "Path to the node store")
+}
+
+var hashCmd = &cobra.Command{
+	Use:   "hash [command] [root hash]",
+	Short: "Commands to interact with EDS hashes",
+	Args:  cobra.ExactArgs(2),
+	RunE: func(_ *cobra.Command, args []string) error {
+		command := args[0]
+
+		hexData, err := hex.DecodeString(args[1])
+		if err != nil {
+			return fmt.Errorf("failed to decode hex string: %w", err)
+		}
+		rootHash := share.DataHash(hexData)
+
+		nodestore, err := nodebuilder.OpenStore(path, nil)
+		if err != nil {
+			return err
+		}
+		defer func() {
+			err = errors.Join(err, nodestore.Close())
+		}()
+
+		datastore, err := nodestore.Datastore()
+		if err != nil {
+			return err
+		}
+
+		store, err := eds.NewStore(eds.DefaultParameters(), path, datastore)
+		if err != nil {
+			return err
+		}
+		err = store.Start(context.Background())
+		if err != nil {
+			fmt.Println("Error starting store:", err)
+			return err
+		}
+
+		switch command {
+		case "has", "exists":
+			exists, err := store.Has(context.Background(), rootHash)
+			if err != nil {
+				fmt.Println("Error checking for root hash:", err)
+				return err
+			}
+
+			if exists {
+				fmt.Printf("Root hash %s exists.\n", rootHash)
+			} else {
+				fmt.Printf("Root hash %s does not exist.\n", rootHash)
+			}
+		case "get":
+			eds, err := store.Get(context.Background(), rootHash)
+			if err != nil {
+				return err
+			}
+
+			fmt.Printf("Retrieved EDS for root hash %s\n", rootHash)
+
+			output, err := json.MarshalIndent(eds, "", "  ")
+			if err != nil {
+				return err
+			}
+
+			fmt.Println(string(output))
+		default:
+			return fmt.Errorf("unknown command: %s", command)
+		}
+
+		return nil
+	},
+}

cmd/cel-shed/main.go

@@ -10,7 +10,7 @@ import (
 )
 
 func init() {
-	rootCmd.AddCommand(p2pCmd, headerCmd, edsStoreCmd)
+	rootCmd.AddCommand(p2pCmd, hashCmd, headerCmd, edsStoreCmd)
 }
 
 var rootCmd = &cobra.Command{