Add constants

Author: hwwhww

eth/beacon/state_machines/__init__.py

@@ -0,0 +1,38 @@
+from typing import (
+    NamedTuple,
+)
+
+from eth.typing import (
+    Address,
+)
+
+
+BeaconConfig = NamedTuple(
+    'BeaconConfig',
+    (
+        ('SHARD_COUNT', int),  # shards
+        ('DEPOSIT_SIZE', int),  # ETH
+        ('MIN_ONLINE_DEPOSIT_SIZE', int),  # ETH
+        ('DEPOSIT_CONTRACT_ADDRESS', Address),
+        ('TARGET_COMMITTEE_SIZE', int),  # validators
+        ('GENESIS_TIME', int),  # seconds
+        ('SLOT_DURATION', int),  # seconds
+        ('CYCLE_LENGTH', int),  # slots
+        ('MIN_VALIDATOR_SET_CHANGE_INTERVAL', int),  # slots
+        ('SHARD_PERSISTENT_COMMITTEE_CHANGE_PERIOD', int),  # slots
+        ('MIN_ATTESTATION_INCLUSION_DELAY', int),  # slots
+        ('RANDAO_SLOTS_PER_LAYER', int),  # slots
+        ('SQRT_E_DROP_TIME', int),  # slots
+        ('WITHDRAWALS_PER_CYCLE', int),  # validators
+        ('MIN_WITHDRAWAL_PERIOD', int),  # slots
+        ('DELETION_PERIOD', int),  # slots
+        ('COLLECTIVE_PENALTY_CALCULATION_PERIOD', int),  # slots
+        ('POW_RECEIPT_ROOT_VOTING_PERIOD', int),  # slots
+        ('SLASHING_WHISTLEBLOWER_REWARD_DENOMINATOR', int),
+        ('BASE_REWARD_QUOTIENT', int),
+        ('MAX_VALIDATOR_CHURN_QUOTIENT', int),
+        ('POW_CONTRACT_MERKLE_TREE_DEPTH', int),
+        ('LOGOUT_MESSAGE', str),
+        ('INITIAL_FORK_VERSION', int),
+    )
+)

eth/beacon/state_machines/configs.py

@@ -0,0 +1,32 @@
+from eth.constants import (
+    ZERO_ADDRESS,
+)
+from eth.beacon.state_machines.configs import BeaconConfig
+
+
+SERENITY_CONFIG = BeaconConfig(
+    SHARD_COUNT=2**10,  # = 1,024 shards
+    DEPOSIT_SIZE=2**5,  # = 32 ETH
+    MIN_ONLINE_DEPOSIT_SIZE=2**4,  # = 16 ETH
+    DEPOSIT_CONTRACT_ADDRESS=ZERO_ADDRESS,  # TODO: TBD
+    TARGET_COMMITTEE_SIZE=2**8,  # = 256 validators
+    GENESIS_TIME=0,  # TBD seconds
+    SLOT_DURATION=6,  # seconds
+    CYCLE_LENGTH=2**6,  # = 64 slots
+    MIN_VALIDATOR_SET_CHANGE_INTERVAL=2**8,  # = 256 slots
+    SHARD_PERSISTENT_COMMITTEE_CHANGE_PERIOD=2**17,  # = 131,072 slots
+    MIN_ATTESTATION_INCLUSION_DELAY=2**2,  # = 4 slots
+    RANDAO_SLOTS_PER_LAYER=2**12,  # = 4,096 slots
+    SQRT_E_DROP_TIME=2**18,  # = 262,144 slots
+    WITHDRAWALS_PER_CYCLE=2**2,  # = 4 validators
+    MIN_WITHDRAWAL_PERIOD=2**13,  # = 8,192 slots
+    DELETION_PERIOD=2**22,  # = 4,194,304 slots
+    COLLECTIVE_PENALTY_CALCULATION_PERIOD=2**20,  # = 1,048,576 slots
+    POW_RECEIPT_ROOT_VOTING_PERIOD=2**10,  # = 1024
+    SLASHING_WHISTLEBLOWER_REWARD_DENOMINATOR=2**9,  # = 512
+    BASE_REWARD_QUOTIENT=2**15,  # = 32,768
+    MAX_VALIDATOR_CHURN_QUOTIENT=2**5,  # = 32
+    POW_CONTRACT_MERKLE_TREE_DEPTH=2**5,  # =32
+    LOGOUT_MESSAGE="LOGOUT",
+    INITIAL_FORK_VERSION=0,
+)

eth/beacon/state_machines/forks/__init__.py

@@ -3,6 +3,7 @@
 import eth.utils.bls as bls
 from eth.utils.blake import blake
 
+from eth.beacon.state_machines.forks.serenity.configs import SERENITY_CONFIG
 
 DEFAULT_SHUFFLING_SEED = b'\00' * 32
 DEFAULT_RANDAO = b'\45' * 32
@@ -177,3 +178,126 @@ def num_validators():
 @pytest.fixture
 def init_validator_keys(pubkeys, num_validators):
     return pubkeys[:num_validators]
+
+
+#
+# config
+#
+@pytest.fixture
+def shard_count():
+    return SERENITY_CONFIG.SHARD_COUNT
+
+
+@pytest.fixture
+def deposit_size():
+    return SERENITY_CONFIG.DEPOSIT_SIZE
+
+
+@pytest.fixture
+def min_online_deposit_size():
+    return SERENITY_CONFIG.MIN_ONLINE_DEPOSIT_SIZE
+
+
+@pytest.fixture
+def deposit_contract_address():
+    return SERENITY_CONFIG.DEPOSIT_CONTRACT_ADDRESS
+
+
+@pytest.fixture
+def target_committee_size():
+    return SERENITY_CONFIG.TARGET_COMMITTEE_SIZE
+
+
+@pytest.fixture
+def genesis_time():
+    return SERENITY_CONFIG.GENESIS_TIME
+
+
+@pytest.fixture
+def slot_duration():
+    return SERENITY_CONFIG.SLOT_DURATION
+
+
+@pytest.fixture
+def cycle_length():
+    return SERENITY_CONFIG.CYCLE_LENGTH
+
+
+@pytest.fixture
+def min_validator_set_change_interval():
+    return SERENITY_CONFIG.MIN_VALIDATOR_SET_CHANGE_INTERVAL
+
+
+@pytest.fixture
+def shard_persistent_committee_change_period():
+    return SERENITY_CONFIG.SHARD_PERSISTENT_COMMITTEE_CHANGE_PERIOD
+
+
+@pytest.fixture
+def min_attestation_inclusion_delay():
+    return SERENITY_CONFIG.MIN_ATTESTATION_INCLUSION_DELAY
+
+
+@pytest.fixture
+def randao_slots_per_layer():
+    return SERENITY_CONFIG.RANDAO_SLOTS_PER_LAYER
+
+
+@pytest.fixture
+def sqrt_e_drop_time():
+    return SERENITY_CONFIG.SQRT_E_DROP_TIME
+
+
+@pytest.fixture
+def withdrawals_per_cycle():
+    return SERENITY_CONFIG.WITHDRAWALS_PER_CYCLE
+
+
+@pytest.fixture
+def min_withdrawal_period():
+    return SERENITY_CONFIG.MIN_WITHDRAWAL_PERIOD
+
+
+@pytest.fixture
+def deletion_period():
+    return SERENITY_CONFIG.DELETION_PERIOD
+
+
+@pytest.fixture
+def collective_penalty_calculation_period():
+    return SERENITY_CONFIG.COLLECTIVE_PENALTY_CALCULATION_PERIOD
+
+
+@pytest.fixture
+def pow_receipt_root_voting_period():
+    return SERENITY_CONFIG.POW_RECEIPT_ROOT_VOTING_PERIOD
+
+
+@pytest.fixture
+def slashing_whistleblower_reward_denominator():
+    return SERENITY_CONFIG.SLASHING_WHISTLEBLOWER_REWARD_DENOMINATOR
+
+
+@pytest.fixture
+def base_reward_quotient():
+    return SERENITY_CONFIG.BASE_REWARD_QUOTIENT
+
+
+@pytest.fixture
+def max_validator_churn_quotient():
+    return SERENITY_CONFIG.MAX_VALIDATOR_CHURN_QUOTIENT
+
+
+@pytest.fixture
+def pow_contract_merkle_tree_depth():
+    return SERENITY_CONFIG.POW_CONTRACT_MERKLE_TREE_DEPTH
+
+
+@pytest.fixture
+def logout_message():
+    return SERENITY_CONFIG.LOGOUT_MESSAGE
+
+
+@pytest.fixture
+def initial_fork_version():
+    return SERENITY_CONFIG.INITIAL_FORK_VERSION