Solana: Where to find latest syntax for Rust metaplex to add metadata to spl token?
I can provide you with an article on how to add metadata to SPL (Solana Token) using Rust and Metaplex.
Adding Metadata to Spl Tokens with Rust and Metaplex
In this article, we will explore how to add metadata to Solana tokens using Rust and the Metaplex protocol. This is particularly useful for creating non-fungible assets that require unique identifiers or information about their ownership.
Prerequisites
Before starting, make sure you have the following installed:
- Rust (version 1.62 or later)
- Metaplex (version 0.9.0 or later)
You can install these using Cargo, the Rust package manager:
cargo install --dev solana-sdk
Setting up a Solana Node
To use Metaplex with your Solana node, you’ll need to set one up. Here’s how:
- Install the
solana-clipackage and create a new Solana account on the CLI:
solana login
- Create a new program using the
solana-programpackage:
solana program new my_program --rust-sdk-version=1.62 --type Program Rust
Creating a New Token
Let’s create a new token with some metadata:
my_token.rs
use solana_program::{
account_info::next_account_info,
entrypoint::ProgramResult,
msg,
};
use std::hash::{Hash, Hasher};
pub struct MyToken {
pub id: u64,
pub name: String,
pub description: String,
}
impl MyToken {
pub fn new(id: u64, name: String, description: String) -> Self {
Self { id, name, description }
}
pub fn to_account_info(&self) -> AccountInfo {
AccountInfo::new(
self.id as u128,
&self.name.to_bytes(),
&self.description.to_bytes(),
)
}
}
impl std::fmt::Display for MyToken {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "{} ({})", self.id, self.name)
}
}
Creating a Metadata Struct
Let’s create a new struct to hold our token’s metadata:
use solana_program::{
account_info::{ next_account_info, AccountInfo },
entrypoint::ProgramResult,
msg,
};
use std::hash::{Hash, Hasher};
pub struct Metadata {
pub id: u64,
pub name: String,
pub description: String,
}
impl Metadata {
pub fn new(id: u64, name: String, description: String) -> Self {
Self { id, name, description }
}
pub fn to_account_info(&self) -> AccountInfo {
AccountInfo::new(
self.id as u128,
&self.name.to_bytes(),
&self.description.to_bytes(),
)
}
}
Creating a Metadata Struct from a Solana Program
Now let’s create a new program that generates metadata for our token:
“`rust
use solana_program::{
account_info::next_account_info,
entrypoint::ProgramResult,
msg,
};
use std::hash::{Hash, Hasher};
pub struct MetadataGenerator {
pub id: u64,
}
impl MetadataGenerator {
pub fn new(id: u64) -> Self {
Self { id }
}
pub fn generate_metadata(&self, metadata: &Metadata) -> ProgramResult {
let account_info = next_account_info();
let metadata_struct = Metadata::new(self.id, metadata.name.clone(), metadata.description.clone());
msg!(“Generating metadata for token {}”, self.id);
// Store the metadata in a Solana ledger
// For now, we’ll just print it out
println!(“Generated metadata: {:?}”, metadata_struct.
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