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Generalise `slash_validator` for phase 1 

Make `slash_validator` friendly to phase 1. This is a cosmetic change in the context of phase 0.
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Justin 2019-03-25 14:30:59 +00:00 committed by GitHub
parent 40aa82beb7
commit b7441e8ab7
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1 changed files with 17 additions and 12 deletions
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specs/core/0_beacon-chain.md
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@ -251,7 +251,8 @@ Code snippets appearing in `this style` are to be interpreted as Python code.
| Name | Value |
| - | - |
| `BASE_REWARD_QUOTIENT` | `2**5` (= 32) |
| `WHISTLEBLOWER_REWARD_QUOTIENT` | `2**9` (= 512) |
| `WHISTLEBLOWING_REWARD_QUOTIENT` | `2**9` (= 512) |
| `PROPOSER_REWARD_QUOTIENT` | `2**4` (= 16) |
| `ATTESTATION_INCLUSION_REWARD_QUOTIENT` | `2**3` (= 8) |
| `INACTIVITY_PENALTY_QUOTIENT` | `2**24` (= 16,777,216) |
| `MIN_PENALTY_QUOTIENT` | `2**5` (= 32) |
@ -1448,21 +1449,25 @@ def exit_validator(state: BeaconState, index: ValidatorIndex) -> None:
#### `slash_validator`
```python
def slash_validator(state: BeaconState, index: ValidatorIndex) -> None:
def slash_validator(state: BeaconState, slashed_index: ValidatorIndex, whitleblower_index: ValidatorIndex=None) -> None:
"""
Slash the validator with index ``index``.
Slash the validator with index ``slashed_index``.
Note that this function mutates ``state``.
"""
validator = state.validator_registry[index]
exit_validator(state, index)
state.latest_slashed_balances[get_current_epoch(state) % LATEST_SLASHED_EXIT_LENGTH] += get_effective_balance(state, index)
exit_validator(state, slashed_index)
state.validator_registry[slashed_index].slashed = True
state.validator_registry[slashed_index].withdrawable_epoch = get_current_epoch(state) + LATEST_SLASHED_EXIT_LENGTH
slashed_balance = get_effective_balance(state, slashed_index)
state.latest_slashed_balances[get_current_epoch(state) % LATEST_SLASHED_EXIT_LENGTH] += slashed_balance
whistleblower_index = get_beacon_proposer_index(state, state.slot)
whistleblower_reward = get_effective_balance(state, index) // WHISTLEBLOWER_REWARD_QUOTIENT
increase_balance(state, whistleblower_index, whistleblower_reward)
decrease_balance(state, index, whistleblower_reward)
validator.slashed = True
validator.withdrawable_epoch = get_current_epoch(state) + LATEST_SLASHED_EXIT_LENGTH
proposer_index = get_beacon_proposer_index(state, state.slot)
if whileblower_index is None:
whileblower_index = proposer_index
whistleblowing_reward = slashed_balance // WHISTLEBLOWING_REWARD_QUOTIENT
proposer_reward = whistleblowing_reward // PROPOSER_REWARD_QUOTIENT
increase_balance(state, proposer_index, proposer_reward)
increase_balance(state, whitleblower_index, whistleblowing_reward - proposer_reward)
decrease_balance(state, slashed_index, whistleblower_reward)
```
#### `prepare_validator_for_withdrawal`