def test_restart_with_reorg(w3, eth_tester, block_fetcher, report_callback):
coinbase1, coinbase2 = eth_tester.get_accounts()[:2]
# mine some common blocks
eth_tester.mine_blocks(2, coinbase=coinbase1)
# point of fork
fork_snapshot_id = eth_tester.take_snapshot()
# mine some blocks on fork A
early_fork_a_hashes = eth_tester.mine_blocks(2, coinbase=coinbase1)
fork_a_tip_snapshot_id = eth_tester.take_snapshot()
# mine on fork B
eth_tester.revert_to_snapshot(fork_snapshot_id)
eth_tester.mine_blocks(2, coinbase=coinbase2)
# fetch common and fork B
block_fetcher.fetch_and_insert_new_blocks()
report_callback.reset_mock()
# mine on fork A again
eth_tester.revert_to_snapshot(fork_a_tip_snapshot_id)
late_fork_a_hashes = eth_tester.mine_blocks(2, coinbase=coinbase1)
# restart block fetcher
restarted_block_fetcher = BlockFetcher(state=block_fetcher.state,
w3=w3,
db=block_fetcher.db)
restarted_block_fetcher.register_report_callback(report_callback)
restarted_block_fetcher.fetch_and_insert_new_blocks()
assert report_callback.call_args_list == [
call(w3.eth.getBlock(h))
for h in early_fork_a_hashes + late_fork_a_hashes
]
def test_restart_with_fetch(w3, eth_tester, block_fetcher, report_callback):
new_block_hashes = [0] # genesis
new_block_hashes.extend(eth_tester.mine_blocks(6))
reports = [call(w3.eth.getBlock(h)) for h in new_block_hashes]
block_fetcher.fetch_and_insert_new_blocks(max_number_of_blocks=4)
restarted_block_fetcher = BlockFetcher(block_fetcher.state, w3,
block_fetcher.db)
restarted_block_fetcher.register_report_callback(report_callback)
restarted_block_fetcher.fetch_and_insert_new_blocks(max_number_of_blocks=3)
assert report_callback.call_args_list == reports
def test_restart(w3, eth_tester, block_fetcher, report_callback):
eth_tester.mine_blocks(3)
block_fetcher.fetch_and_insert_new_blocks()
report_callback.reset_mock()
new_block_hashes = eth_tester.mine_blocks(3)
reports = [call(w3.eth.getBlock(h)) for h in new_block_hashes]
restarted_block_fetcher = BlockFetcher(block_fetcher.state, w3,
block_fetcher.db)
restarted_block_fetcher.register_report_callback(report_callback)
restarted_block_fetcher.fetch_and_insert_new_blocks()
assert report_callback.call_args_list == reports
def _initialize_reporters(self, app_state, skip_rate, offline_window_size):
if not isinstance(app_state, AppStateV2):
raise InvalidAppStateException()
self.block_fetcher = BlockFetcher(
state=app_state.block_fetcher_state,
w3=self.w3,
db=self.db,
max_reorg_depth=MAX_REORG_DEPTH,
initial_block_resolver=self.initial_block_resolver,
)
self.skip_reporter = SkipReporter(
state=app_state.skip_reporter_state,
primary_oracle=self.primary_oracle,
grace_period=GRACE_PERIOD,
)
self.offline_reporter = OfflineReporter(
state=app_state.offline_reporter_state,
primary_oracle=self.primary_oracle,
offline_window_size=offline_window_size,
allowed_skip_rate=skip_rate,
)
self.equivocation_reporter = EquivocationReporter(db=self.db)