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Return token amounts as floats (#11370) 

* Return token amounts as floats

* Floating-point equality

* Return float and raw token amounts

* Fix decimals and token rpcs for native-mint tokens

* Fixup docs and review comments
This commit is contained in:
Tyera Eulberg 2020-08-05 00:48:09 -06:00 committed by GitHub
parent 14339dec0a
commit 86e3f96f16
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5 changed files with 152 additions and 64 deletions
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9
account-decoder/src/parse_token.rs
View File

@ -7,11 +7,18 @@ use spl_token_v1_0::{
};
use std::{mem::size_of, str::FromStr};
// A helper function to convert spl_token_v1_0::id() as spl_sdk::pubkey::Pubkey to solana_sdk::pubkey::Pubkey
// A helper function to convert spl_token_v1_0::id() as spl_sdk::pubkey::Pubkey to
// solana_sdk::pubkey::Pubkey
pub fn spl_token_id_v1_0() -> Pubkey {
Pubkey::from_str(&spl_token_v1_0::id().to_string()).unwrap()
}
// A helper function to convert spl_token_v1_0::native_mint::id() as spl_sdk::pubkey::Pubkey to
// solana_sdk::pubkey::Pubkey
pub fn spl_token_v1_0_native_mint() -> Pubkey {
Pubkey::from_str(&spl_token_v1_0::native_mint::id().to_string()).unwrap()
}
pub fn parse_token(data: &[u8]) -> Result<TokenAccountType, ParseAccountError> {
let mut data = data.to_vec();
if data.len() == size_of::<Account>() {

8
client/src/rpc_client.rs
View File

@ -734,7 +734,7 @@ impl RpcClient {
})
}
pub fn get_token_account_balance(&self, pubkey: &Pubkey) -> ClientResult<u64> {
pub fn get_token_account_balance(&self, pubkey: &Pubkey) -> ClientResult<RpcTokenAmount> {
Ok(self
.get_token_account_balance_with_commitment(pubkey, CommitmentConfig::default())?
.value)
@ -744,7 +744,7 @@ impl RpcClient {
&self,
pubkey: &Pubkey,
commitment_config: CommitmentConfig,
) -> RpcResult<u64> {
) -> RpcResult<RpcTokenAmount> {
self.send(
RpcRequest::GetTokenAccountBalance,
json!([pubkey.to_string(), commitment_config]),
@ -841,7 +841,7 @@ impl RpcClient {
})
}
pub fn get_token_supply(&self, mint: &Pubkey) -> ClientResult<u64> {
pub fn get_token_supply(&self, mint: &Pubkey) -> ClientResult<RpcTokenAmount> {
Ok(self
.get_token_supply_with_commitment(mint, CommitmentConfig::default())?
.value)
@ -851,7 +851,7 @@ impl RpcClient {
&self,
mint: &Pubkey,
commitment_config: CommitmentConfig,
) -> RpcResult<u64> {
) -> RpcResult<RpcTokenAmount> {
self.send(
RpcRequest::GetTokenSupply,
json!([mint.to_string(), commitment_config]),

12
client/src/rpc_response.rs
View File

@ -9,6 +9,7 @@ use solana_sdk::{
use std::{collections::HashMap, net::SocketAddr};
pub type RpcResult<T> = client_error::Result<Response<T>>;
pub type RpcAmount = String;
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct RpcResponseContext {
@ -220,9 +221,18 @@ pub struct RpcStakeActivation {
pub inactive: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct RpcTokenAmount {
pub ui_amount: f64,
pub decimals: u8,
pub amount: RpcAmount,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct RpcTokenAccountBalance {
pub address: String,
pub amount: u64,
#[serde(flatten)]
pub amount: RpcTokenAmount,
}

171
core/src/rpc.rs
View File

@ -8,7 +8,10 @@ use crate::{
use bincode::{config::Options, serialize};
use jsonrpc_core::{Error, Metadata, Result};
use jsonrpc_derive::rpc;
use solana_account_decoder::{parse_token::spl_token_id_v1_0, UiAccount, UiAccountEncoding};
use solana_account_decoder::{
parse_token::{spl_token_id_v1_0, spl_token_v1_0_native_mint},
UiAccount, UiAccountEncoding,
};
use solana_client::{
rpc_config::*,
rpc_filter::{Memcmp, MemcmpEncodedBytes, RpcFilterType},
@ -50,7 +53,7 @@ use solana_transaction_status::{
ConfirmedBlock, ConfirmedTransaction, TransactionStatus, UiTransactionEncoding,
};
use solana_vote_program::vote_state::{VoteState, MAX_LOCKOUT_HISTORY};
use spl_token_v1_0::state::Account as TokenAccount;
use spl_token_v1_0::state::{Account as TokenAccount, Mint};
use std::{
cmp::{max, min},
collections::{HashMap, HashSet},
@ -838,7 +841,7 @@ impl JsonRpcRequestProcessor {
&self,
pubkey: &Pubkey,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>> {
) -> Result<RpcResponse<RpcTokenAmount>> {
let bank = self.bank(commitment);
let account = bank.get_account(pubkey).ok_or_else(|| {
Error::invalid_params("Invalid param: could not find account".to_string())
@ -850,11 +853,14 @@ impl JsonRpcRequestProcessor {
));
}
let mut data = account.data.to_vec();
let balance = spl_token_v1_0::state::unpack(&mut data)
.map_err(|_| {
let token_account =
spl_token_v1_0::state::unpack::<TokenAccount>(&mut data).map_err(|_| {
Error::invalid_params("Invalid param: not a v1.0 Token account".to_string())
})
.map(|account: &mut TokenAccount| account.amount)?;
})?;
let mint = &Pubkey::from_str(&token_account.mint.to_string())
.expect("Token account mint should be convertible to Pubkey");
let (_, decimals) = get_mint_owner_and_decimals(&bank, &mint)?;
let balance = token_amount_to_ui_amount(token_account.amount, decimals);
Ok(new_response(&bank, balance))
}
@ -862,16 +868,15 @@ impl JsonRpcRequestProcessor {
&self,
mint: &Pubkey,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>> {
) -> Result<RpcResponse<RpcTokenAmount>> {
let bank = self.bank(commitment);
let mint_account = bank.get_account(mint).ok_or_else(|| {
Error::invalid_params("Invalid param: could not find mint".to_string())
})?;
if mint_account.owner != spl_token_id_v1_0() {
let (mint_owner, decimals) = get_mint_owner_and_decimals(&bank, mint)?;
if mint_owner != spl_token_id_v1_0() {
return Err(Error::invalid_params(
"Invalid param: not a v1.0 Token mint".to_string(),
));
}
let filters = vec![
// Filter on Mint address
RpcFilterType::Memcmp(Memcmp {
@ -882,7 +887,7 @@ impl JsonRpcRequestProcessor {
// Filter on Token Account state
RpcFilterType::DataSize(size_of::<TokenAccount>() as u64),
];
let supply = get_filtered_program_accounts(&bank, &mint_account.owner, filters)
let supply = get_filtered_program_accounts(&bank, &mint_owner, filters)
.map(|(_pubkey, account)| {
let mut data = account.data.to_vec();
spl_token_v1_0::state::unpack(&mut data)
@ -890,6 +895,7 @@ impl JsonRpcRequestProcessor {
.unwrap_or(0)
})
.sum();
let supply = token_amount_to_ui_amount(supply, decimals);
Ok(new_response(&bank, supply))
}
@ -899,10 +905,8 @@ impl JsonRpcRequestProcessor {
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<Vec<RpcTokenAccountBalance>>> {
let bank = self.bank(commitment);
let mint_account = bank.get_account(mint).ok_or_else(|| {
Error::invalid_params("Invalid param: could not find mint".to_string())
})?;
if mint_account.owner != spl_token_id_v1_0() {
let (mint_owner, decimals) = get_mint_owner_and_decimals(&bank, mint)?;
if mint_owner != spl_token_id_v1_0() {
return Err(Error::invalid_params(
"Invalid param: not a v1.0 Token mint".to_string(),
));
@ -918,19 +922,27 @@ impl JsonRpcRequestProcessor {
RpcFilterType::DataSize(size_of::<TokenAccount>() as u64),
];
let mut token_balances: Vec<RpcTokenAccountBalance> =
get_filtered_program_accounts(&bank, &mint_account.owner, filters)
get_filtered_program_accounts(&bank, &mint_owner, filters)
.map(|(address, account)| {
let mut data = account.data.to_vec();
let amount = spl_token_v1_0::state::unpack(&mut data)
.map(|account: &mut TokenAccount| account.amount)
.unwrap_or(0);
let amount = token_amount_to_ui_amount(amount, decimals);
RpcTokenAccountBalance {
address: address.to_string(),
amount,
}
})
.collect();
token_balances.sort_by(|a, b| a.amount.cmp(&b.amount).reverse());
token_balances.sort_by(|a, b| {
a.amount
.amount
.parse::<u64>()
.unwrap()
.cmp(&b.amount.amount.parse::<u64>().unwrap())
.reverse()
});
token_balances.truncate(NUM_LARGEST_ACCOUNTS);
Ok(new_response(&bank, token_balances))
}
@ -1077,15 +1089,13 @@ fn get_token_program_id_and_mint(
) -> Result<(Pubkey, Option<Pubkey>)> {
match token_account_filter {
TokenAccountsFilter::Mint(mint) => {
let mint_account = bank.get_account(&mint).ok_or_else(|| {
Error::invalid_params("Invalid param: could not find mint".to_string())
})?;
if mint_account.owner != spl_token_id_v1_0() {
let (mint_owner, _) = get_mint_owner_and_decimals(&bank, &mint)?;
if mint_owner != spl_token_id_v1_0() {
return Err(Error::invalid_params(
"Invalid param: not a v1.0 Token mint".to_string(),
));
}
Ok((mint_account.owner, Some(mint)))
Ok((mint_owner, Some(mint)))
}
TokenAccountsFilter::ProgramId(program_id) => {
if program_id == spl_token_id_v1_0() {
@ -1099,6 +1109,41 @@ fn get_token_program_id_and_mint(
}
}
/// Analyze a mint Pubkey that may be the native_mint and get the mint-account owner (token
/// program_id) and decimals
fn get_mint_owner_and_decimals(bank: &Arc<Bank>, mint: &Pubkey) -> Result<(Pubkey, u8)> {
if mint == &spl_token_v1_0_native_mint() {
// Uncomment the following once spl_token is bumped to a version that includes native_mint::DECIMALS
// Ok((spl_token_id_v1_0(), spl_token_v1_0::native_mint::DECIMALS))
Ok((spl_token_id_v1_0(), 9))
} else {
let mint_account = bank.get_account(mint).ok_or_else(|| {
Error::invalid_params("Invalid param: could not find mint".to_string())
})?;
let decimals = get_mint_decimals(&mint_account.data)?;
Ok((mint_account.owner, decimals))
}
}
fn get_mint_decimals(data: &[u8]) -> Result<u8> {
let mut data = data.to_vec();
spl_token_v1_0::state::unpack(&mut data)
.map_err(|_| {
Error::invalid_params("Invalid param: Token mint could not be unpacked".to_string())
})
.map(|mint: &mut Mint| mint.decimals)
}
fn token_amount_to_ui_amount(amount: u64, decimals: u8) -> RpcTokenAmount {
// Use `amount_to_ui_amount()` once spl_token is bumped to a version that supports it: https://github.com/solana-labs/solana-program-library/pull/211
let amount_decimals = amount as f64 / 10_usize.pow(decimals as u32) as f64;
RpcTokenAmount {
ui_amount: amount_decimals,
decimals,
amount: amount.to_string(),
}
}
#[rpc]
pub trait RpcSol {
type Metadata;
@ -1382,7 +1427,7 @@ pub trait RpcSol {
meta: Self::Metadata,
pubkey_str: String,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>>;
) -> Result<RpcResponse<RpcTokenAmount>>;
#[rpc(meta, name = "getTokenSupply")]
fn get_token_supply(
@ -1390,7 +1435,7 @@ pub trait RpcSol {
meta: Self::Metadata,
mint_str: String,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>>;
) -> Result<RpcResponse<RpcTokenAmount>>;
#[rpc(meta, name = "getTokenLargestAccounts")]
fn get_token_largest_accounts(
@ -2015,7 +2060,7 @@ impl RpcSol for RpcSolImpl {
meta: Self::Metadata,
pubkey_str: String,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>> {
) -> Result<RpcResponse<RpcTokenAmount>> {
debug!(
"get_token_account_balance rpc request received: {:?}",
pubkey_str
@ -2029,7 +2074,7 @@ impl RpcSol for RpcSolImpl {
meta: Self::Metadata,
mint_str: String,
commitment: Option<CommitmentConfig>,
) -> Result<RpcResponse<u64>> {
) -> Result<RpcResponse<RpcTokenAmount>> {
debug!("get_token_supply rpc request received: {:?}", mint_str);
let mint = verify_pubkey(mint_str)?;
meta.get_token_supply(&mint, commitment)
@ -4353,7 +4398,7 @@ pub mod tests {
mint,
owner,
delegate: COption::Some(delegate),
amount: 42,
amount: 420,
is_initialized: true,
is_native: false,
delegated_amount: 30,
@ -4367,27 +4412,7 @@ pub mod tests {
let token_account_pubkey = Pubkey::new_rand();
bank.store_account(&token_account_pubkey, &token_account);
let req = format!(
r#"{{"jsonrpc":"2.0","id":1,"method":"getTokenAccountBalance","params":["{}"]}}"#,
token_account_pubkey,
);
let res = io.handle_request_sync(&req, meta.clone());
let result: Value = serde_json::from_str(&res.expect("actual response"))
.expect("actual response deserialization");
let balance: u64 = serde_json::from_value(result["result"]["value"].clone()).unwrap();
assert_eq!(balance, 42);
// Test non-existent token account
let req = format!(
r#"{{"jsonrpc":"2.0","id":1,"method":"getTokenAccountBalance","params":["{}"]}}"#,
Pubkey::new_rand(),
);
let res = io.handle_request_sync(&req, meta.clone());
let result: Value = serde_json::from_str(&res.expect("actual response"))
.expect("actual response deserialization");
assert!(result.get("error").is_some());
// Add the mint, plus another token account to ensure getTokenSupply sums all mint accounts
// Add the mint
let mut mint_data = [0; size_of::<Mint>()];
let mint_state: &mut Mint =
spl_token_v1_0::state::unpack_unchecked(&mut mint_data).unwrap();
@ -4403,6 +4428,32 @@ pub mod tests {
..Account::default()
};
bank.store_account(&Pubkey::from_str(&mint.to_string()).unwrap(), &mint_account);
let req = format!(
r#"{{"jsonrpc":"2.0","id":1,"method":"getTokenAccountBalance","params":["{}"]}}"#,
token_account_pubkey,
);
let res = io.handle_request_sync(&req, meta.clone());
let result: Value = serde_json::from_str(&res.expect("actual response"))
.expect("actual response deserialization");
let balance: RpcTokenAmount =
serde_json::from_value(result["result"]["value"].clone()).unwrap();
let error = f64::EPSILON;
assert!((balance.ui_amount - 4.2).abs() < error);
assert_eq!(balance.amount, 420.to_string());
assert_eq!(balance.decimals, 2);
// Test non-existent token account
let req = format!(
r#"{{"jsonrpc":"2.0","id":1,"method":"getTokenAccountBalance","params":["{}"]}}"#,
Pubkey::new_rand(),
);
let res = io.handle_request_sync(&req, meta.clone());
let result: Value = serde_json::from_str(&res.expect("actual response"))
.expect("actual response deserialization");
assert!(result.get("error").is_some());
// Add another token account to ensure getTokenSupply sums all mint accounts
let other_token_account_pubkey = Pubkey::new_rand();
bank.store_account(&other_token_account_pubkey, &token_account);
@ -4413,8 +4464,12 @@ pub mod tests {
let res = io.handle_request_sync(&req, meta.clone());
let result: Value = serde_json::from_str(&res.expect("actual response"))
.expect("actual response deserialization");
let supply: u64 = serde_json::from_value(result["result"]["value"].clone()).unwrap();
assert_eq!(supply, 2 * 42);
let supply: RpcTokenAmount =
serde_json::from_value(result["result"]["value"].clone()).unwrap();
let error = f64::EPSILON;
assert!((supply.ui_amount - 2.0 * 4.2).abs() < error);
assert_eq!(supply.amount, (2 * 420).to_string());
assert_eq!(supply.decimals, 2);
// Test non-existent mint address
let req = format!(
@ -4669,11 +4724,19 @@ pub mod tests {
vec![
RpcTokenAccountBalance {
address: token_with_different_mint_pubkey.to_string(),
amount: 42,
amount: RpcTokenAmount {
ui_amount: 0.42,
decimals: 2,
amount: "42".to_string(),
}
},
RpcTokenAccountBalance {
address: token_with_smaller_balance.to_string(),
amount: 10,
amount: RpcTokenAmount {
ui_amount: 0.1,
decimals: 2,
amount: "10".to_string(),
}
}
]
);

16
docs/src/apps/jsonrpc-api.md
View File

@ -1031,7 +1031,11 @@ Returns the token balance of an SPL Token account.
#### Results:
- `RpcResponse<u64>` - RpcResponse JSON object with `value` field set to the balance
The result will be an RpcResponse JSON object with `value` equal to a JSON object containing:
- `uiAmount: <f64>` - the balance, using mint-prescribed decimals
- `amount: <string>` - the raw balance without decimals, a string representation of u64
- `decimals: <u8>` - number of base 10 digits to the right of the decimal place
#### Example:
@ -1039,7 +1043,7 @@ Returns the token balance of an SPL Token account.
// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getTokenAccountBalance", "params": ["7fUAJdStEuGbc3sM84cKRL6yYaaSstyLSU4ve5oovLS7"]}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1114},"value":9864,"id":1}
{"jsonrpc":"2.0","result":{"context":{"slot":1114},"value":{"uiAmount":98.64,"amount":"9864","decimals":2},"id":1}
```
### getTokenAccountsByDelegate
@ -1125,7 +1129,11 @@ Returns the total supply of an SPL Token type.
#### Results:
- `RpcResponse<u64>` - RpcResponse JSON object with `value` field set to the total token supply
The result will be an RpcResponse JSON object with `value` equal to a JSON object containing:
- `uiAmount: <f64>` - the total token supply, using mint-prescribed decimals
- `amount: <string>` - the raw total token supply without decimals, a string representation of u64
- `decimals: <u8>` - number of base 10 digits to the right of the decimal place
#### Example:
@ -1133,7 +1141,7 @@ Returns the total supply of an SPL Token type.
// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getTokenSupply", "params": ["3wyAj7Rt1TWVPZVteFJPLa26JmLvdb1CAKEFZm3NY75E"]}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1114},"value":100000,"id":1}
{"jsonrpc":"2.0","result":{"context":{"slot":1114},"value":{"uiAmount":1000.0,"amount":"100000","decimals":2},"id":1}
```
### getTransactionCount