94 lines
3.1 KiB
Rust
94 lines
3.1 KiB
Rust
use {
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jsonrpc_core::{Error, Result},
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solana_account_decoder::{
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parse_account_data::AccountAdditionalData, parse_token::get_token_account_mint, UiAccount,
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UiAccountData, UiAccountEncoding,
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},
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solana_rpc_client_api::response::RpcKeyedAccount,
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solana_runtime::bank::Bank,
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solana_sdk::{
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account::{AccountSharedData, ReadableAccount},
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pubkey::Pubkey,
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},
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spl_token_2022::{extension::StateWithExtensions, state::Mint},
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std::{collections::HashMap, sync::Arc},
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};
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pub fn get_parsed_token_account(
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bank: Arc<Bank>,
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pubkey: &Pubkey,
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account: AccountSharedData,
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) -> UiAccount {
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let additional_data = get_token_account_mint(account.data())
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.and_then(|mint_pubkey| get_mint_owner_and_decimals(&bank, &mint_pubkey).ok())
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.map(|(_, decimals)| AccountAdditionalData {
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spl_token_decimals: Some(decimals),
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});
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UiAccount::encode(
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pubkey,
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&account,
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UiAccountEncoding::JsonParsed,
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additional_data,
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None,
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)
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}
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pub fn get_parsed_token_accounts<I>(
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bank: Arc<Bank>,
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keyed_accounts: I,
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) -> impl Iterator<Item = RpcKeyedAccount>
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where
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I: Iterator<Item = (Pubkey, AccountSharedData)>,
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{
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let mut mint_decimals: HashMap<Pubkey, u8> = HashMap::new();
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keyed_accounts.filter_map(move |(pubkey, account)| {
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let additional_data = get_token_account_mint(account.data()).map(|mint_pubkey| {
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let spl_token_decimals = mint_decimals.get(&mint_pubkey).cloned().or_else(|| {
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let (_, decimals) = get_mint_owner_and_decimals(&bank, &mint_pubkey).ok()?;
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mint_decimals.insert(mint_pubkey, decimals);
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Some(decimals)
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});
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AccountAdditionalData { spl_token_decimals }
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});
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let maybe_encoded_account = UiAccount::encode(
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&pubkey,
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&account,
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UiAccountEncoding::JsonParsed,
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additional_data,
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None,
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);
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if let UiAccountData::Json(_) = &maybe_encoded_account.data {
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Some(RpcKeyedAccount {
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pubkey: pubkey.to_string(),
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account: maybe_encoded_account,
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})
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} else {
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None
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}
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})
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}
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/// Analyze a mint Pubkey that may be the native_mint and get the mint-account owner (token
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/// program_id) and decimals
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pub fn get_mint_owner_and_decimals(bank: &Arc<Bank>, mint: &Pubkey) -> Result<(Pubkey, u8)> {
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if mint == &spl_token::native_mint::id() {
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Ok((spl_token::id(), spl_token::native_mint::DECIMALS))
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} else {
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let mint_account = bank.get_account(mint).ok_or_else(|| {
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Error::invalid_params("Invalid param: could not find mint".to_string())
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})?;
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let decimals = get_mint_decimals(mint_account.data())?;
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Ok((*mint_account.owner(), decimals))
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}
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}
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fn get_mint_decimals(data: &[u8]) -> Result<u8> {
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StateWithExtensions::<Mint>::unpack(data)
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.map_err(|_| {
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Error::invalid_params("Invalid param: Token mint could not be unpacked".to_string())
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})
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.map(|mint| mint.base.decimals)
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}
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