509 lines
15 KiB
Rust
509 lines
15 KiB
Rust
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use {
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crate::stake::{
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config,
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program::id,
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state::{Authorized, Lockup, StakeAuthorize, StakeState},
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},
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crate::{
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clock::{Epoch, UnixTimestamp},
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decode_error::DecodeError,
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instruction::{AccountMeta, Instruction},
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pubkey::Pubkey,
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system_instruction, sysvar,
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},
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log::*,
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num_derive::{FromPrimitive, ToPrimitive},
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serde_derive::{Deserialize, Serialize},
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thiserror::Error,
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};
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/// Reasons the stake might have had an error
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#[derive(Error, Debug, Clone, PartialEq, FromPrimitive, ToPrimitive)]
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pub enum StakeError {
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#[error("not enough credits to redeem")]
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NoCreditsToRedeem,
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#[error("lockup has not yet expired")]
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LockupInForce,
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#[error("stake already deactivated")]
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AlreadyDeactivated,
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#[error("one re-delegation permitted per epoch")]
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TooSoonToRedelegate,
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#[error("split amount is more than is staked")]
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InsufficientStake,
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#[error("stake account with transient stake cannot be merged")]
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MergeTransientStake,
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#[error("stake account merge failed due to different authority, lockups or state")]
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MergeMismatch,
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#[error("custodian address not present")]
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CustodianMissing,
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#[error("custodian signature not present")]
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CustodianSignatureMissing,
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}
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impl<E> DecodeError<E> for StakeError {
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fn type_of() -> &'static str {
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"StakeError"
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}
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}
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#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
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pub enum StakeInstruction {
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/// Initialize a stake with lockup and authorization information
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///
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/// # Account references
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/// 0. [WRITE] Uninitialized stake account
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/// 1. [] Rent sysvar
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///
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/// Authorized carries pubkeys that must sign staker transactions
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/// and withdrawer transactions.
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/// Lockup carries information about withdrawal restrictions
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Initialize(Authorized, Lockup),
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/// Authorize a key to manage stake or withdrawal
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///
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/// # Account references
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/// 0. [WRITE] Stake account to be updated
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/// 1. [] Clock sysvar
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/// 2. [SIGNER] The stake or withdraw authority
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/// 3. Optional: [SIGNER] Lockup authority, if updating StakeAuthorize::Withdrawer before
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/// lockup expiration
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Authorize(Pubkey, StakeAuthorize),
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/// Delegate a stake to a particular vote account
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///
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/// # Account references
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/// 0. [WRITE] Initialized stake account to be delegated
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/// 1. [] Vote account to which this stake will be delegated
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/// 2. [] Clock sysvar
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/// 3. [] Stake history sysvar that carries stake warmup/cooldown history
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/// 4. [] Address of config account that carries stake config
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/// 5. [SIGNER] Stake authority
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///
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/// The entire balance of the staking account is staked. DelegateStake
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/// can be called multiple times, but re-delegation is delayed
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/// by one epoch
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DelegateStake,
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/// Split u64 tokens and stake off a stake account into another stake account.
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///
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/// # Account references
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/// 0. [WRITE] Stake account to be split; must be in the Initialized or Stake state
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/// 1. [WRITE] Uninitialized stake account that will take the split-off amount
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/// 2. [SIGNER] Stake authority
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Split(u64),
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/// Withdraw unstaked lamports from the stake account
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///
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/// # Account references
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/// 0. [WRITE] Stake account from which to withdraw
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/// 1. [WRITE] Recipient account
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/// 2. [] Clock sysvar
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/// 3. [] Stake history sysvar that carries stake warmup/cooldown history
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/// 4. [SIGNER] Withdraw authority
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/// 5. Optional: [SIGNER] Lockup authority, if before lockup expiration
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///
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/// The u64 is the portion of the stake account balance to be withdrawn,
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/// must be `<= StakeAccount.lamports - staked_lamports`.
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Withdraw(u64),
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/// Deactivates the stake in the account
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///
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/// # Account references
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/// 0. [WRITE] Delegated stake account
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/// 1. [] Clock sysvar
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/// 2. [SIGNER] Stake authority
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Deactivate,
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/// Set stake lockup
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///
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/// If a lockup is not active, the withdraw authority may set a new lockup
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/// If a lockup is active, the lockup custodian may update the lockup parameters
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///
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/// # Account references
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/// 0. [WRITE] Initialized stake account
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/// 1. [SIGNER] Lockup authority or withdraw authority
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SetLockup(LockupArgs),
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/// Merge two stake accounts.
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///
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/// Both accounts must have identical lockup and authority keys. A merge
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/// is possible between two stakes in the following states with no additional
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/// conditions:
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///
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/// * two deactivated stakes
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/// * an inactive stake into an activating stake during its activation epoch
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///
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/// For the following cases, the voter pubkey and vote credits observed must match:
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///
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/// * two activated stakes
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/// * two activating accounts that share an activation epoch, during the activation epoch
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///
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/// All other combinations of stake states will fail to merge, including all
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/// "transient" states, where a stake is activating or deactivating with a
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/// non-zero effective stake.
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///
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/// # Account references
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/// 0. [WRITE] Destination stake account for the merge
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/// 1. [WRITE] Source stake account for to merge. This account will be drained
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/// 2. [] Clock sysvar
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/// 3. [] Stake history sysvar that carries stake warmup/cooldown history
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/// 4. [SIGNER] Stake authority
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Merge,
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/// Authorize a key to manage stake or withdrawal with a derived key
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///
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/// # Account references
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/// 0. [WRITE] Stake account to be updated
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/// 1. [SIGNER] Base key of stake or withdraw authority
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/// 2. [] Clock sysvar
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/// 3. Optional: [SIGNER] Lockup authority, if updating StakeAuthorize::Withdrawer before
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/// lockup expiration
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AuthorizeWithSeed(AuthorizeWithSeedArgs),
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}
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#[derive(Default, Debug, Serialize, Deserialize, PartialEq, Clone, Copy)]
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pub struct LockupArgs {
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pub unix_timestamp: Option<UnixTimestamp>,
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pub epoch: Option<Epoch>,
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pub custodian: Option<Pubkey>,
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}
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#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
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pub struct AuthorizeWithSeedArgs {
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pub new_authorized_pubkey: Pubkey,
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pub stake_authorize: StakeAuthorize,
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pub authority_seed: String,
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pub authority_owner: Pubkey,
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}
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pub fn initialize(stake_pubkey: &Pubkey, authorized: &Authorized, lockup: &Lockup) -> Instruction {
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Instruction::new_with_bincode(
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id(),
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&StakeInstruction::Initialize(*authorized, *lockup),
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vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::rent::id(), false),
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],
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)
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}
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pub fn create_account_with_seed(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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base: &Pubkey,
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seed: &str,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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vec![
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system_instruction::create_account_with_seed(
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from_pubkey,
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stake_pubkey,
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base,
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seed,
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lamports,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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initialize(stake_pubkey, authorized, lockup),
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]
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}
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pub fn create_account(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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vec![
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system_instruction::create_account(
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from_pubkey,
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stake_pubkey,
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lamports,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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initialize(stake_pubkey, authorized, lockup),
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]
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}
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fn _split(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey,
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) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new(*split_stake_pubkey, false),
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AccountMeta::new_readonly(*authorized_pubkey, true),
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];
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Instruction::new_with_bincode(id(), &StakeInstruction::Split(lamports), account_metas)
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}
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pub fn split(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey,
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) -> Vec<Instruction> {
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vec![
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system_instruction::allocate(split_stake_pubkey, std::mem::size_of::<StakeState>() as u64),
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system_instruction::assign(split_stake_pubkey, &id()),
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_split(
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stake_pubkey,
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authorized_pubkey,
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lamports,
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split_stake_pubkey,
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),
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]
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}
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pub fn split_with_seed(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey, // derived using create_with_seed()
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base: &Pubkey, // base
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seed: &str, // seed
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) -> Vec<Instruction> {
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vec![
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system_instruction::allocate_with_seed(
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split_stake_pubkey,
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base,
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seed,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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_split(
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stake_pubkey,
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authorized_pubkey,
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lamports,
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split_stake_pubkey,
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),
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]
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}
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pub fn merge(
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destination_stake_pubkey: &Pubkey,
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source_stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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) -> Vec<Instruction> {
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let account_metas = vec![
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AccountMeta::new(*destination_stake_pubkey, false),
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AccountMeta::new(*source_stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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AccountMeta::new_readonly(sysvar::stake_history::id(), false),
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AccountMeta::new_readonly(*authorized_pubkey, true),
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];
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vec![Instruction::new_with_bincode(
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id(),
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&StakeInstruction::Merge,
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account_metas,
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)]
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}
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pub fn create_account_and_delegate_stake(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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vote_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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let mut instructions = create_account(from_pubkey, stake_pubkey, authorized, lockup, lamports);
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instructions.push(delegate_stake(
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stake_pubkey,
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&authorized.staker,
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vote_pubkey,
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));
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instructions
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}
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pub fn create_account_with_seed_and_delegate_stake(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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base: &Pubkey,
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seed: &str,
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vote_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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let mut instructions = create_account_with_seed(
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from_pubkey,
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stake_pubkey,
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base,
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seed,
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authorized,
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lockup,
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lamports,
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);
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instructions.push(delegate_stake(
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stake_pubkey,
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&authorized.staker,
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vote_pubkey,
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));
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instructions
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}
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pub fn authorize(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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new_authorized_pubkey: &Pubkey,
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stake_authorize: StakeAuthorize,
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custodian_pubkey: Option<&Pubkey>,
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) -> Instruction {
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let mut account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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AccountMeta::new_readonly(*authorized_pubkey, true),
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];
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if let Some(custodian_pubkey) = custodian_pubkey {
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account_metas.push(AccountMeta::new_readonly(*custodian_pubkey, true));
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}
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Instruction::new_with_bincode(
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id(),
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&StakeInstruction::Authorize(*new_authorized_pubkey, stake_authorize),
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account_metas,
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)
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}
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pub fn authorize_with_seed(
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stake_pubkey: &Pubkey,
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authority_base: &Pubkey,
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authority_seed: String,
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authority_owner: &Pubkey,
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new_authorized_pubkey: &Pubkey,
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stake_authorize: StakeAuthorize,
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custodian_pubkey: Option<&Pubkey>,
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) -> Instruction {
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let mut account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(*authority_base, true),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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];
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if let Some(custodian_pubkey) = custodian_pubkey {
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account_metas.push(AccountMeta::new_readonly(*custodian_pubkey, true));
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}
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let args = AuthorizeWithSeedArgs {
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new_authorized_pubkey: *new_authorized_pubkey,
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stake_authorize,
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authority_seed,
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authority_owner: *authority_owner,
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};
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Instruction::new_with_bincode(
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id(),
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&StakeInstruction::AuthorizeWithSeed(args),
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account_metas,
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)
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}
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pub fn delegate_stake(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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vote_pubkey: &Pubkey,
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) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(*vote_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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AccountMeta::new_readonly(sysvar::stake_history::id(), false),
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AccountMeta::new_readonly(config::id(), false),
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AccountMeta::new_readonly(*authorized_pubkey, true),
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];
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Instruction::new_with_bincode(id(), &StakeInstruction::DelegateStake, account_metas)
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}
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pub fn withdraw(
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stake_pubkey: &Pubkey,
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withdrawer_pubkey: &Pubkey,
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to_pubkey: &Pubkey,
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|
lamports: u64,
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|
custodian_pubkey: Option<&Pubkey>,
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) -> Instruction {
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let mut account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new(*to_pubkey, false),
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||
|
AccountMeta::new_readonly(sysvar::clock::id(), false),
|
||
|
AccountMeta::new_readonly(sysvar::stake_history::id(), false),
|
||
|
AccountMeta::new_readonly(*withdrawer_pubkey, true),
|
||
|
];
|
||
|
|
||
|
if let Some(custodian_pubkey) = custodian_pubkey {
|
||
|
account_metas.push(AccountMeta::new_readonly(*custodian_pubkey, true));
|
||
|
}
|
||
|
|
||
|
Instruction::new_with_bincode(id(), &StakeInstruction::Withdraw(lamports), account_metas)
|
||
|
}
|
||
|
|
||
|
pub fn deactivate_stake(stake_pubkey: &Pubkey, authorized_pubkey: &Pubkey) -> Instruction {
|
||
|
let account_metas = vec![
|
||
|
AccountMeta::new(*stake_pubkey, false),
|
||
|
AccountMeta::new_readonly(sysvar::clock::id(), false),
|
||
|
AccountMeta::new_readonly(*authorized_pubkey, true),
|
||
|
];
|
||
|
Instruction::new_with_bincode(id(), &StakeInstruction::Deactivate, account_metas)
|
||
|
}
|
||
|
|
||
|
pub fn set_lockup(
|
||
|
stake_pubkey: &Pubkey,
|
||
|
lockup: &LockupArgs,
|
||
|
custodian_pubkey: &Pubkey,
|
||
|
) -> Instruction {
|
||
|
let account_metas = vec![
|
||
|
AccountMeta::new(*stake_pubkey, false),
|
||
|
AccountMeta::new_readonly(*custodian_pubkey, true),
|
||
|
];
|
||
|
Instruction::new_with_bincode(id(), &StakeInstruction::SetLockup(*lockup), account_metas)
|
||
|
}
|
||
|
|
||
|
#[cfg(test)]
|
||
|
mod tests {
|
||
|
use super::*;
|
||
|
use crate::instruction::InstructionError;
|
||
|
|
||
|
#[test]
|
||
|
fn test_custom_error_decode() {
|
||
|
use num_traits::FromPrimitive;
|
||
|
fn pretty_err<T>(err: InstructionError) -> String
|
||
|
where
|
||
|
T: 'static + std::error::Error + DecodeError<T> + FromPrimitive,
|
||
|
{
|
||
|
if let InstructionError::Custom(code) = err {
|
||
|
let specific_error: T = T::decode_custom_error_to_enum(code).unwrap();
|
||
|
format!(
|
||
|
"{:?}: {}::{:?} - {}",
|
||
|
err,
|
||
|
T::type_of(),
|
||
|
specific_error,
|
||
|
specific_error,
|
||
|
)
|
||
|
} else {
|
||
|
"".to_string()
|
||
|
}
|
||
|
}
|
||
|
assert_eq!(
|
||
|
"Custom(0): StakeError::NoCreditsToRedeem - not enough credits to redeem",
|
||
|
pretty_err::<StakeError>(StakeError::NoCreditsToRedeem.into())
|
||
|
)
|
||
|
}
|
||
|
}
|