Phát triển chương trình bằng Rust

cargo init hello_world --lib

cd hello_world

cargo add solana-program@1.18.26

[lib]
crate-type = ["cdylib", "lib"]

[package]
name = "hello_world"
version = "0.1.0"
edition = "2021"

[lib]
crate-type = ["cdylib", "lib"]

[dependencies]
solana-program = "1.18.26"

use solana_program::{
    account_info::AccountInfo, entrypoint, entrypoint::ProgramResult, msg, pubkey::Pubkey,
};

entrypoint!(process_instruction);

pub fn process_instruction(
    _program_id: &Pubkey,
    _accounts: &[AccountInfo],
    _instruction_data: &[u8],
) -> ProgramResult {
    msg!("Hello, world!");
    Ok(())
}

cargo build-sbf

solana address -k ./target/deploy/hello_world-keypair.json

4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz

cargo add solana-program-test@1.18.26 --dev
cargo add solana-sdk@1.18.26 --dev
cargo add tokio --dev

#[cfg(test)]
mod test {
    use solana_program_test::*;
    use solana_sdk::{
        instruction::Instruction, pubkey::Pubkey, signature::Signer, transaction::Transaction,
    };

    #[tokio::test]
    async fn test_hello_world() {
        let program_id = Pubkey::new_unique();
        let mut program_test = ProgramTest::default();
        program_test.add_program("hello_world", program_id, None);
        let (mut banks_client, payer, recent_blockhash) = program_test.start().await;
        // Create instruction
        let instruction = Instruction {
            program_id,
            accounts: vec![],
            data: vec![],
        };
        // Create transaction with instruction
        let mut transaction = Transaction::new_with_payer(&[instruction], Some(&payer.pubkey()));

        // Sign transaction
        transaction.sign(&[&payer], recent_blockhash);

        let transaction_result = banks_client.process_transaction(transaction).await;
        assert!(transaction_result.is_ok());
    }
}

cargo test-sbf

running 1 test
[2024-10-18T21:24:54.889570000Z INFO  solana_program_test] "hello_world" SBF program from /hello_world/target/deploy/hello_world.so, modified 35 seconds, 828 ms, 268 µs and 398 ns ago
[2024-10-18T21:24:54.974294000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM invoke [1]
[2024-10-18T21:24:54.974814000Z DEBUG solana_runtime::message_processor::stable_log] Program log: Hello, world!
[2024-10-18T21:24:54.976848000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM consumed 140 of 200000 compute units
[2024-10-18T21:24:54.976868000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM success
test test::test_hello_world ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s

solana config set -ul

Config File: /.config/solana/cli/config.yml
RPC URL: http://localhost:8899
WebSocket URL: ws://localhost:8900/ (computed)
Keypair Path: /.config/solana/id.json
Commitment: confirmed

solana-test-validator

solana program deploy ./target/deploy/hello_world.so

Program Id: 4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz
Signature:
5osMiNMiDZGM7L1e2tPHxU8wdB8gwG8fDnXLg5G7SbhwFz4dHshYgAijk4wSQL5cXiu8z1MMou5kLadAQuHp7ybH

mkdir -p examples
touch examples/client.rs

[[example]]
name = "client"
path = "examples/client.rs"

cargo add solana-client@1.18.26 --dev

use solana_client::rpc_client::RpcClient;
use solana_sdk::{
    commitment_config::CommitmentConfig,
    instruction::Instruction,
    pubkey::Pubkey,
    signature::{Keypair, Signer},
    transaction::Transaction,
};
use std::str::FromStr;

#[tokio::main]
async fn main() {
    // Program ID (replace with your actual program ID)
    let program_id = Pubkey::from_str("4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz").unwrap();

    // Connect to the Solana devnet
    let rpc_url = String::from("http://127.0.0.1:8899");
    let client = RpcClient::new_with_commitment(rpc_url, CommitmentConfig::confirmed());

    // Generate a new keypair for the payer
    let payer = Keypair::new();

    // Request airdrop
    let airdrop_amount = 1_000_000_000; // 1 SOL
    let signature = client
        .request_airdrop(&payer.pubkey(), airdrop_amount)
        .expect("Failed to request airdrop");

    // Wait for airdrop confirmation
    loop {
        let confirmed = client.confirm_transaction(&signature).unwrap();
        if confirmed {
            break;
        }
    }

    // Create the instruction
    let instruction = Instruction::new_with_borsh(
        program_id,
        &(),    // Empty instruction data
        vec![], // No accounts needed
    );

    // Add the instruction to new transaction
    let mut transaction = Transaction::new_with_payer(&[instruction], Some(&payer.pubkey()));
    transaction.sign(&[&payer], client.get_latest_blockhash().unwrap());

    // Send and confirm the transaction
    match client.send_and_confirm_transaction(&transaction) {
        Ok(signature) => println!("Transaction Signature: {}", signature),
        Err(err) => eprintln!("Error sending transaction: {}", err),
    }
}

solana address -k ./target/deploy/hello_world-keypair.json

#[tokio::main]
async fn main() {
-     let program_id = Pubkey::from_str("4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz").unwrap();
+     let program_id = Pubkey::from_str("YOUR_PROGRAM_ID).unwrap();
    }
}

cargo run --example client

Transaction Signature: 54TWxKi3Jsi3UTeZbhLGUFX6JQH7TspRJjRRFZ8NFnwG5BXM9udxiX77bAACjKAS9fGnVeEazrXL4SfKrW7xZFYV

pub fn process_instruction(
    _program_id: &Pubkey,
    _accounts: &[AccountInfo],
    _instruction_data: &[u8],
) -> ProgramResult {
-   msg!("Hello, world!");
+   msg!("Hello, Solana!");
    Ok(())
}

cargo test-sbf

running 1 test
[2024-10-23T19:28:28.842639000Z INFO  solana_program_test] "hello_world" SBF program from /code/misc/delete/hello_world/target/deploy/hello_world.so, modified 4 minutes, 31 seconds, 435 ms, 566 µs and 766 ns ago
[2024-10-23T19:28:28.934854000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM invoke [1]
[2024-10-23T19:28:28.936735000Z DEBUG solana_runtime::message_processor::stable_log] Program log: Hello, Solana!
[2024-10-23T19:28:28.938774000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM consumed 140 of 200000 compute units
[2024-10-23T19:28:28.938793000Z DEBUG solana_runtime::message_processor::stable_log] Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM success
test test::test_hello_world ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s

cargo build-sbf

solana program deploy ./target/deploy/hello_world.so

cargo run --example client

solana program close 4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz
--bypass-warning

Closed Program Id 4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz, 0.1350588 SOL
reclaimed

Error: Program 4Ujf5fXfLx2PAwRqcECCLtgDxHKPznoJpa43jUBxFfMz has been closed, use
a new Program Id

solana-keygen new -o ./target/deploy/hello_world-keypair.json --force