Metadata serialization issue

[lucasoares]

I'm using the token-metadata client to fetch metadata from tokens. The strings decoded from the data returned by the chain contain additional 0x00 bytes; I don't know if it should.

Example:

	resp, err := client.GetAccountInfoWithOpts(ctx, metadataAddress, &rpc.GetAccountInfoOpts{
		Commitment: rpc.CommitmentType(defaultRpc.Commitment),
		Encoding:   "base64",
	})

	if err != nil {
		return nil, fmt.Errorf("failed to get metadata account info: %w", err)
	}

	metadata := new(token_metadata.Metadata)
	err = bin.NewBorshDecoder(resp.Value.Data.GetBinary()).Decode(metadata)

The result of metadata.Data.Name (or other data, like symbol), for example, will always have a length of 32:

fmt.Printf("Token name from metadata (%d): %s\n", len(metadata.Data.Name), metadata.Data.Name)

Results into:

Token name from metadata (32): Ansem's World

If I print the value with a string interpreter to show 0x00 bytes, it shows as:

name="Ansem's World\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"

What do you think is the best way to deal with it? Is this the default behavior for the NewBorshDecoder?

[SubZzzzzz]

Did you find an answer ?? am interested by that

[SubZzzzzz]

mintAddress := solana.MustPublicKeyFromBase58(tokenAddress)

	resp, err := rpcClient.GetAccountInfo(context.Background(), mintAddress)

	if err != nil {
		fmt.Errorf("failed to get metadata account info: %w", err)
	}

	metadata := new(token_metadata.Metadata)
	decoded := bin.NewBorshDecoder(resp.Value.Data.GetBinary())
	err = decoded.Decode(&metadata)
	fmt.Println("Is mutable : ", metadata.IsMutable)
	fmt.Println("Token name : ", metadata.Data.Name)
	fmt.Println("Token Symbol : ", metadata.Data.Symbol)
	fmt.Println("Token Creator : ", metadata.Data.Creators)
	fmt.Println("Token Uri : ", metadata.Data.Uri)

I tried your way and for bonk for example i'd get :

Is mutable :  false
Token name :  
Token Symbol :  
Token Creator :  <nil>
Token Uri :  

If anyone could indicate me what am doing wrong would be lovely

[lucasoares]

If anyone could indicate me what am doing wrong would be lovely

Do you have issues with getting the metadata by itself or with \x00 bytes in the string values? If you are having issues getting the metadata, follow the examples: https://github.com/gagliardetto/metaplex-go/tree/main/examples

But if it is the same issue as mine (which should be, because you are replying in this github issue) for now I'm manually replacing \x00 bytes in the result.

[SubZzzzzz]

Thanks it helped.