async def test_fast_syncer(request, event_loop, chaindb_fresh, chaindb_20):
client_peer, server_peer = await get_directly_linked_peers(
request, event_loop, ETHPeer, FakeAsyncHeaderDB(chaindb_fresh.db),
ETHPeer, FakeAsyncHeaderDB(chaindb_20.db))
client_peer_pool = MockPeerPoolWithConnectedPeers([client_peer])
client = FastChainSyncer(FrontierTestChain(chaindb_fresh.db),
chaindb_fresh, client_peer_pool)
server = RegularChainSyncer(FrontierTestChain(chaindb_20.db), chaindb_20,
MockPeerPoolWithConnectedPeers([server_peer]))
asyncio.ensure_future(server.run())
def finalizer():
event_loop.run_until_complete(server.cancel())
# Yield control so that server.run() returns, otherwise asyncio will complain.
event_loop.run_until_complete(asyncio.sleep(0.1))
request.addfinalizer(finalizer)
# FastChainSyncer.run() will return as soon as it's caught up with the peer.
await asyncio.wait_for(client.run(), timeout=2)
head = chaindb_fresh.get_canonical_head()
assert head == chaindb_20.get_canonical_head()
# Now download the state for the chain's head.
state_downloader = StateDownloader(chaindb_fresh, chaindb_fresh.db,
head.state_root, client_peer_pool)
await asyncio.wait_for(state_downloader.run(), timeout=2)
assert head.state_root in chaindb_fresh.db
async def test_regular_syncer(request, event_loop, chaindb_fresh, chaindb_20):
client_peer, server_peer = await get_directly_linked_peers(
request, event_loop, ETHPeer, FakeAsyncHeaderDB(chaindb_fresh.db),
ETHPeer, FakeAsyncHeaderDB(chaindb_20.db))
client = RegularChainSyncer(FrontierTestChain(chaindb_fresh.db),
chaindb_fresh,
MockPeerPoolWithConnectedPeers([client_peer]))
server = RegularChainSyncer(FrontierTestChain(chaindb_20.db), chaindb_20,
MockPeerPoolWithConnectedPeers([server_peer]))
asyncio.ensure_future(server.run())
def finalizer():
event_loop.run_until_complete(
asyncio.gather(
client.cancel(),
server.cancel(),
loop=event_loop,
))
# Yield control so that client/server.run() returns, otherwise asyncio will complain.
event_loop.run_until_complete(asyncio.sleep(0.1))
request.addfinalizer(finalizer)
asyncio.ensure_future(client.run())
await wait_for_head(client.db, server.db.get_canonical_head())
head = client.db.get_canonical_head()
assert head.state_root in client.db.db
async def test_tx_sending(request, event_loop, chain_with_block_validation,
tx_validator):
# This test covers the communication end to end whereas the previous
# focusses on the rules of the transaction pool on when to send tx to whom
peer1, peer2 = await get_directly_linked_peers(
request,
event_loop,
)
peer2_subscriber = SamplePeerSubscriber()
peer2.add_subscriber(peer2_subscriber)
pool = TxPool(MockPeerPoolWithConnectedPeers([peer1, peer2]), tx_validator)
asyncio.ensure_future(pool.run())
def finalizer():
event_loop.run_until_complete(pool.cancel())
request.addfinalizer(finalizer)
txs = [create_random_tx(chain_with_block_validation)]
peer1.sub_proto.send_transactions(txs)
# Ensure that peer2 gets the transactions
peer, cmd, msg = await asyncio.wait_for(
peer2_subscriber.msg_queue.get(),
timeout=0.1,
)
assert peer == peer2
assert isinstance(cmd, Transactions)
assert msg[0].hash == txs[0].hash
async def test_syncer_proposing(request, event_loop):
# setup a-b topology
peer_a_b, peer_b_a = await get_directly_linked_sharding_peers(request, event_loop)
peer_a_b_subscriber = SamplePeerSubscriber()
peer_a_b.add_subscriber(peer_a_b_subscriber)
peer_pool_b = MockPeerPoolWithConnectedPeers([peer_b_a])
# setup shard dbs at b
shard_db = ShardDB(MemoryDB())
shard = Shard(shard_db, 0)
# start shard syncer
syncer = ShardSyncer(shard, peer_pool_b)
asyncio.ensure_future(syncer.run())
def finalizer():
event_loop.run_until_complete(syncer.cancel())
request.addfinalizer(finalizer)
# propose at b and check that it announces its proposal
await syncer.propose()
peer, cmd, msg = await asyncio.wait_for(
peer_a_b_subscriber.msg_queue.get(),
timeout=1,
)
assert peer == peer_a_b
assert isinstance(cmd, NewCollationHashes)
assert len(msg["collation_hashes_and_periods"]) == 1
proposed_hash = msg["collation_hashes_and_periods"][0][0]
# test that the collation has been added to the shard
shard.get_collation_by_hash(proposed_hash)
async def test_syncer_requests_new_collations(request, event_loop):
# setup a-b topology
peer_a_b, peer_b_a = await get_directly_linked_sharding_peers(request, event_loop)
peer_a_b_subscriber = SamplePeerSubscriber()
peer_a_b.add_subscriber(peer_a_b_subscriber)
peer_pool_b = MockPeerPoolWithConnectedPeers([peer_b_a])
# setup shard dbs at b
shard_db = ShardDB(MemoryDB())
shard = Shard(shard_db, 0)
# start shard syncer
syncer = ShardSyncer(shard, peer_pool_b)
asyncio.ensure_future(syncer.run())
def finalizer():
event_loop.run_until_complete(syncer.cancel())
request.addfinalizer(finalizer)
# notify b about new hashes at a and check that it requests them
hashes_and_periods = ((b"\xaa" * 32, 0),)
peer_a_b.sub_proto.send_new_collation_hashes(hashes_and_periods)
peer, cmd, msg = await asyncio.wait_for(
peer_a_b_subscriber.msg_queue.get(),
timeout=1,
)
assert peer == peer_a_b
assert isinstance(cmd, GetCollations)
assert msg["collation_hashes"] == (hashes_and_periods[0][0],)
async def test_skeleton_syncer(request, event_loop, chaindb_fresh,
chaindb_1000):
client_peer, server_peer = await get_directly_linked_peers(
request,
event_loop,
alice_headerdb=FakeAsyncHeaderDB(chaindb_fresh.db),
bob_headerdb=FakeAsyncHeaderDB(chaindb_1000.db))
client_peer_pool = MockPeerPoolWithConnectedPeers([client_peer])
client = FastChainSyncer(ByzantiumTestChain(chaindb_fresh.db),
chaindb_fresh, client_peer_pool)
server_peer_pool = MockPeerPoolWithConnectedPeers([server_peer])
server = RegularChainSyncer(
ByzantiumTestChain(chaindb_1000.db),
chaindb_1000,
server_peer_pool,
)
asyncio.ensure_future(server.run())
server_request_handler = ETHRequestServer(
FakeAsyncChainDB(chaindb_1000.db), server_peer_pool)
asyncio.ensure_future(server_request_handler.run())
client_peer.logger.info("%s is serving 1000 blocks", client_peer)
server_peer.logger.info("%s is syncing up 1000 blocks", server_peer)
def finalizer():
event_loop.run_until_complete(server.cancel())
# Yield control so that server.run() returns, otherwise asyncio will complain.
event_loop.run_until_complete(asyncio.sleep(0.1))
request.addfinalizer(finalizer)
# FastChainSyncer.run() will return as soon as it's caught up with the peer.
await asyncio.wait_for(client.run(), timeout=20)
head = chaindb_fresh.get_canonical_head()
assert head == chaindb_1000.get_canonical_head()
# Now download the state for the chain's head.
state_downloader = StateDownloader(chaindb_fresh, chaindb_fresh.db,
head.state_root, client_peer_pool)
await asyncio.wait_for(state_downloader.run(), timeout=20)
assert head.state_root in chaindb_fresh.db
async def test_regular_syncer(request, event_loop, chaindb_fresh, chaindb_20):
client_peer, server_peer = await get_directly_linked_peers(
request,
event_loop,
alice_headerdb=FakeAsyncHeaderDB(chaindb_fresh.db),
bob_headerdb=FakeAsyncHeaderDB(chaindb_20.db))
client = RegularChainSyncer(ByzantiumTestChain(chaindb_fresh.db),
chaindb_fresh,
MockPeerPoolWithConnectedPeers([client_peer]))
server_peer_pool = MockPeerPoolWithConnectedPeers([server_peer])
server = RegularChainSyncer(
ByzantiumTestChain(chaindb_20.db),
chaindb_20,
server_peer_pool,
)
asyncio.ensure_future(server.run())
server_request_handler = ETHRequestServer(FakeAsyncChainDB(chaindb_20.db),
server_peer_pool)
asyncio.ensure_future(server_request_handler.run())
server_peer.logger.info("%s is serving 20 blocks", server_peer)
client_peer.logger.info("%s is syncing up 20", client_peer)
def finalizer():
event_loop.run_until_complete(
asyncio.gather(
client.cancel(),
server.cancel(),
loop=event_loop,
))
# Yield control so that client/server.run() returns, otherwise asyncio will complain.
event_loop.run_until_complete(asyncio.sleep(0.1))
request.addfinalizer(finalizer)
asyncio.ensure_future(client.run())
await wait_for_head(chaindb_fresh, chaindb_20.get_canonical_head())
head = chaindb_fresh.get_canonical_head()
assert head.state_root in chaindb_fresh.db
async def test_new_collations_notification(request, event_loop):
# setup a-b-c topology
peer_a_b, peer_b_a = await get_directly_linked_sharding_peers(request, event_loop)
peer_b_c, peer_c_b = await get_directly_linked_sharding_peers(request, event_loop)
peer_c_b_subscriber = SamplePeerSubscriber()
peer_c_b.add_subscriber(peer_c_b_subscriber)
peer_pool_b = MockPeerPoolWithConnectedPeers([peer_b_a, peer_b_c])
# setup shard dbs at b
shard_db = ShardDB(MemoryDB())
shard = Shard(shard_db, 0)
# start shard syncer
syncer = ShardSyncer(shard, peer_pool_b)
asyncio.ensure_future(syncer.run())
def finalizer():
event_loop.run_until_complete(syncer.cancel())
request.addfinalizer(finalizer)
# send collation from a to b and check that c gets notified
c1 = next(collations)
peer_a_b.sub_proto.send_collations(0, [c1])
peer, cmd, msg = await asyncio.wait_for(
peer_c_b_subscriber.msg_queue.get(),
timeout=1,
)
assert peer == peer_c_b
assert isinstance(cmd, NewCollationHashes)
assert msg["collation_hashes_and_periods"] == ((c1.hash, c1.period),)
# check that c won't be notified about c1 again
c2 = next(collations)
peer_a_b.sub_proto.send_collations(0, [c1, c2])
peer, cmd, msg = await asyncio.wait_for(
peer_c_b_subscriber.msg_queue.get(),
timeout=1,
)
assert peer == peer_c_b
assert isinstance(cmd, NewCollationHashes)
assert msg["collation_hashes_and_periods"] == ((c2.hash, c2.period),)
async def test_peer_pool_iter(request, event_loop):
peer1, _ = await get_directly_linked_peers(request, event_loop)
peer2, _ = await get_directly_linked_peers(request, event_loop)
peer3, _ = await get_directly_linked_peers(request, event_loop)
pool = MockPeerPoolWithConnectedPeers([peer1, peer2, peer3])
peers = list([peer async for peer in pool])
assert len(peers) == 3
assert peer1 in peers
assert peer2 in peers
assert peer3 in peers
peers = []
asyncio.ensure_future(
peer2.disconnect(DisconnectReason.disconnect_requested))
async for peer in pool:
peers.append(peer)
assert len(peers) == 2
assert peer1 in peers
assert peer2 not in peers
assert peer3 in peers
async def bootstrap_test_setup(monkeypatch, request, event_loop, chain,
tx_validator):
peer1, peer2 = await get_directly_linked_peers(
request,
event_loop,
)
# We intercept sub_proto.send_transactions to record detailed information
# about which peer received what and was invoked how often.
peer1_txs_recorder = create_tx_recorder(monkeypatch, peer1)
peer2_txs_recorder = create_tx_recorder(monkeypatch, peer2)
pool = TxPool(MockPeerPoolWithConnectedPeers([peer1, peer2]), tx_validator)
asyncio.ensure_future(pool.run())
def finalizer():
event_loop.run_until_complete(pool.cancel())
request.addfinalizer(finalizer)
return peer1, peer1_txs_recorder, peer2, peer2_txs_recorder, pool
async def test_collation_requests(request, event_loop):
# setup two peers
sender, receiver = await get_directly_linked_sharding_peers(request, event_loop)
receiver_peer_pool = MockPeerPoolWithConnectedPeers([receiver])
# setup shard db for request receiving node
receiver_db = ShardDB(MemoryDB())
receiver_shard = Shard(receiver_db, 0)
# create three collations and add two to the shard of the receiver
# body is shared to avoid unnecessary chunk root calculation
body = zpad_right(b"body", COLLATION_SIZE)
chunk_root = calc_chunk_root(body)
c1 = Collation(CollationHeader(0, chunk_root, 0, zpad_right(b"proposer1", 20)), body)
c2 = Collation(CollationHeader(0, chunk_root, 1, zpad_right(b"proposer2", 20)), body)
c3 = Collation(CollationHeader(0, chunk_root, 2, zpad_right(b"proposer3", 20)), body)
for collation in [c1, c2]:
receiver_shard.add_collation(collation)
# start shard syncer
receiver_syncer = ShardSyncer(receiver_shard, receiver_peer_pool)
asyncio.ensure_future(receiver_syncer.run())
def finalizer():
event_loop.run_until_complete(receiver_syncer.cancel())
request.addfinalizer(finalizer)
cancel_token = CancelToken("test")
# request single collation
received_collations = await asyncio.wait_for(
sender.get_collations([c1.hash], cancel_token),
timeout=1,
)
assert received_collations == set([c1])
# request multiple collations
received_collations = await asyncio.wait_for(
sender.get_collations([c1.hash, c2.hash], cancel_token),
timeout=1,
)
assert received_collations == set([c1, c2])
# request no collations
received_collations = await asyncio.wait_for(
sender.get_collations([], cancel_token),
timeout=1,
)
assert received_collations == set()
# request unknown collation
received_collations = await asyncio.wait_for(
sender.get_collations([c3.hash], cancel_token),
timeout=1,
)
assert received_collations == set()
# request multiple collations, including unknown one
received_collations = await asyncio.wait_for(
sender.get_collations([c1.hash, c2.hash, c3.hash], cancel_token),
timeout=1,
)
assert received_collations == set([c1, c2])