StakePoolProgram.decreaseValidatorStake constructor

StakePoolProgram.decreaseValidatorStake({ required SolAddress stakePool, required SolAddress staker, required SolAddress withdrawAuthority, required SolAddress validatorList, required SolAddress validatorStake, required SolAddress transientStake, required StakePoolDecreaseValidatorStakeLayout layout, })

(Staker only) Decrease active stake on a validator, eventually moving it to the reserve

Internally, this instruction splits a validator stake account into its corresponding transient stake account and deactivates it.

In order to rebalance the pool without taking custody, the staker needs a way of reducing the stake on a stake account. This instruction splits some amount of stake, up to the total activated stake, from the canonical validator stake account, into its "transient" stake account.

Implementation

factory StakePoolProgram.decreaseValidatorStake({
  /// Stake pool
  required SolAddress stakePool,

  /// Stake pool staker
  required SolAddress staker,

  /// Stake pool withdraw authority
  required SolAddress withdrawAuthority,

  /// Validator list
  required SolAddress validatorList,

  /// Canonical stake account to split from
  required SolAddress validatorStake,

  /// Transient stake account to receive split
  required SolAddress transientStake,
  required StakePoolDecreaseValidatorStakeLayout layout,
}) {
  return StakePoolProgram(
      layout: layout,
      keys: [
        stakePool.toReadOnly(),
        staker.toSigner(),
        withdrawAuthority.toReadOnly(),
        validatorList.toWritable(),
        validatorStake.toWritable(),
        transientStake.toWritable(),
        SystemProgramConst.sysvarClockPubkey.toReadOnly(),
        SystemProgramConst.sysvarRentPubkey.toReadOnly(),
        SystemProgramConst.programId.toReadOnly(),
        StakeProgramConst.programId.toReadOnly(),
      ],
      programId: StakePoolProgramConst.programId);
}