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runtime: use leader schedule epoch to serve
sol_get_epoch_stake (#3279
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| [package] | ||
| name = "solana-sbf-syscall-get-epoch-stake" | ||
| version = { workspace = true } | ||
| description = { workspace = true } | ||
| authors = { workspace = true } | ||
| repository = { workspace = true } | ||
| homepage = { workspace = true } | ||
| license = { workspace = true } | ||
| edition = { workspace = true } | ||
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|
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| [dependencies] | ||
| solana-program = { workspace = true } | ||
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||
| [lib] | ||
| crate-type = ["cdylib"] |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,39 @@ | ||
| //! Example Rust-based SBF program that tests the `sol_get_epoch_stake` | ||
| //! syscall. | ||
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| extern crate solana_program; | ||
| use solana_program::{ | ||
| account_info::AccountInfo, | ||
| entrypoint::ProgramResult, | ||
| epoch_stake::{get_epoch_stake_for_vote_account, get_epoch_total_stake}, | ||
| msg, | ||
| program::set_return_data, | ||
| pubkey::Pubkey, | ||
| }; | ||
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| solana_program::entrypoint_no_alloc!(process_instruction); | ||
| pub fn process_instruction( | ||
| _program_id: &Pubkey, | ||
| accounts: &[AccountInfo], | ||
| _instruction_data: &[u8], | ||
| ) -> ProgramResult { | ||
| // Total stake. | ||
| let total_stake = get_epoch_total_stake(); | ||
| assert_ne!(total_stake, 0); | ||
| msg!("Total Stake: {}", total_stake); | ||
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| // Vote accounts. | ||
| let check_vote_account_stake = |i: usize| { | ||
| let vote_address = accounts[i].key; | ||
| let vote_stake = get_epoch_stake_for_vote_account(vote_address); | ||
| assert_ne!(vote_stake, 0); | ||
| msg!("Vote Stake for account {}: {}", i, vote_stake); | ||
| }; | ||
| check_vote_account_stake(0); | ||
| check_vote_account_stake(1); | ||
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| // For good measure, set the return data to total stake. | ||
| set_return_data(&total_stake.to_le_bytes()); | ||
|
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| Ok(()) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| #![cfg(feature = "sbf_rust")] | ||
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| use { | ||
| solana_runtime::{ | ||
| bank::Bank, | ||
| bank_client::BankClient, | ||
| epoch_stakes::EpochStakes, | ||
| genesis_utils::{ | ||
| create_genesis_config_with_vote_accounts, GenesisConfigInfo, ValidatorVoteKeypairs, | ||
| }, | ||
| loader_utils::load_upgradeable_program_and_advance_slot, | ||
| }, | ||
| solana_sdk::{ | ||
| instruction::{AccountMeta, Instruction}, | ||
| message::Message, | ||
| signature::{Keypair, Signer}, | ||
| transaction::{SanitizedTransaction, Transaction}, | ||
| }, | ||
| solana_vote::vote_account::VoteAccount, | ||
| solana_vote_program::vote_state::create_account_with_authorized, | ||
| std::collections::HashMap, | ||
| }; | ||
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| #[test] | ||
| fn test_syscall_get_epoch_stake() { | ||
| solana_logger::setup(); | ||
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| // Two vote accounts with stake. | ||
| let stakes = vec![100_000_000, 500_000_000]; | ||
| let voting_keypairs = vec![ | ||
| ValidatorVoteKeypairs::new_rand(), | ||
| ValidatorVoteKeypairs::new_rand(), | ||
| ]; | ||
| let total_stake: u64 = stakes.iter().sum(); | ||
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| let GenesisConfigInfo { | ||
| genesis_config, | ||
| mint_keypair, | ||
| .. | ||
| } = create_genesis_config_with_vote_accounts(1_000_000_000, &voting_keypairs, stakes.clone()); | ||
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| let mut bank = Bank::new_for_tests(&genesis_config); | ||
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| // Intentionally overwrite the bank epoch with no stake, to ensure the | ||
| // syscall gets the _current_ epoch stake based on the leader schedule | ||
| // (N + 1). | ||
| let epoch_stakes_epoch_0 = EpochStakes::new_for_tests( | ||
| voting_keypairs | ||
| .iter() | ||
| .map(|keypair| { | ||
| let node_id = keypair.node_keypair.pubkey(); | ||
| let authorized_voter = keypair.vote_keypair.pubkey(); | ||
| let vote_account = VoteAccount::try_from(create_account_with_authorized( | ||
| &node_id, | ||
| &authorized_voter, | ||
| &node_id, | ||
| 0, | ||
| 100, | ||
| )) | ||
| .unwrap(); | ||
| (authorized_voter, (0, vote_account)) // No stake. | ||
| }) | ||
| .collect::<HashMap<_, _>>(), | ||
| 0, // Leader schedule epoch 0 | ||
| ); | ||
| bank.set_epoch_stakes_for_test(0, epoch_stakes_epoch_0); | ||
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| let (bank, bank_forks) = bank.wrap_with_bank_forks_for_tests(); | ||
| let mut bank_client = BankClient::new_shared(bank); | ||
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| let authority_keypair = Keypair::new(); | ||
| let (bank, program_id) = load_upgradeable_program_and_advance_slot( | ||
| &mut bank_client, | ||
| bank_forks.as_ref(), | ||
| &mint_keypair, | ||
| &authority_keypair, | ||
| "solana_sbf_syscall_get_epoch_stake", | ||
| ); | ||
| bank.freeze(); | ||
|
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| let instruction = Instruction::new_with_bytes( | ||
| program_id, | ||
| &[], | ||
| vec![ | ||
| AccountMeta::new_readonly(voting_keypairs[0].vote_keypair.pubkey(), false), | ||
| AccountMeta::new_readonly(voting_keypairs[1].vote_keypair.pubkey(), false), | ||
| ], | ||
| ); | ||
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| let blockhash = bank.last_blockhash(); | ||
| let message = Message::new(&[instruction], Some(&mint_keypair.pubkey())); | ||
| let transaction = Transaction::new(&[&mint_keypair], message, blockhash); | ||
| let sanitized_tx = SanitizedTransaction::from_transaction_for_tests(transaction); | ||
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| let result = bank.simulate_transaction(&sanitized_tx, false); | ||
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| assert!(result.result.is_ok()); | ||
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| let return_data_le_bytes: [u8; 8] = result.return_data.unwrap().data[0..8].try_into().unwrap(); | ||
| let total_stake_from_return_data = u64::from_le_bytes(return_data_le_bytes); | ||
| assert_eq!(total_stake_from_return_data, total_stake); | ||
| } |
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