171 lines
8 KiB
Python
171 lines
8 KiB
Python
import contextlib
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import typing
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import binascii
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import socket
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import asyncio
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from lbry.testcase import AsyncioTestCase
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from tests import dht_mocks
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from lbry.conf import Config
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from lbry.dht import constants
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from lbry.dht.node import Node
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from lbry.dht.peer import PeerManager, make_kademlia_peer
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from lbry.dht.blob_announcer import BlobAnnouncer
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from lbry.extras.daemon.storage import SQLiteStorage
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from unittest import skip
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class TestBlobAnnouncer(AsyncioTestCase):
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async def setup_node(self, peer_addresses, address, node_id):
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self.nodes: typing.Dict[int, Node] = {}
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self.advance = dht_mocks.get_time_accelerator(self.loop, self.loop.time())
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self.conf = Config()
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self.storage = SQLiteStorage(self.conf, ":memory:", self.loop, self.loop.time)
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await self.storage.open()
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self.peer_manager = PeerManager(self.loop)
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self.node = Node(self.loop, self.peer_manager, node_id, 4444, 4444, 3333, address)
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await self.node.start_listening(address)
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self.blob_announcer = BlobAnnouncer(self.loop, self.node, self.storage)
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for node_id, address in peer_addresses:
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await self.add_peer(node_id, address)
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self.node.joined.set()
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self.node._refresh_task = self.loop.create_task(self.node.refresh_node())
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async def add_peer(self, node_id, address, add_to_routing_table=True):
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n = Node(self.loop, PeerManager(self.loop), node_id, 4444, 4444, 3333, address)
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await n.start_listening(address)
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self.nodes.update({len(self.nodes): n})
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if add_to_routing_table:
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self.node.protocol.add_peer(
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make_kademlia_peer(
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n.protocol.node_id, n.protocol.external_ip, n.protocol.udp_port
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)
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)
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@contextlib.asynccontextmanager
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async def _test_network_context(self, peer_addresses=None):
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self.peer_addresses = peer_addresses or [
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(constants.generate_id(2), '1.2.3.2'),
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(constants.generate_id(3), '1.2.3.3'),
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(constants.generate_id(4), '1.2.3.4'),
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(constants.generate_id(5), '1.2.3.5'),
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(constants.generate_id(6), '1.2.3.6'),
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(constants.generate_id(7), '1.2.3.7'),
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(constants.generate_id(8), '1.2.3.8'),
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(constants.generate_id(9), '1.2.3.9'),
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]
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try:
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with dht_mocks.mock_network_loop(self.loop):
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await self.setup_node(self.peer_addresses, '1.2.3.1', constants.generate_id(1))
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yield
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finally:
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self.blob_announcer.stop()
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self.node.stop()
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for n in self.nodes.values():
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n.stop()
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async def chain_peer(self, node_id, address):
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previous_last_node = self.nodes[len(self.nodes) - 1]
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await self.add_peer(node_id, address, False)
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last_node = self.nodes[len(self.nodes) - 1]
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peer = last_node.protocol.get_rpc_peer(
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make_kademlia_peer(
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previous_last_node.protocol.node_id, previous_last_node.protocol.external_ip,
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previous_last_node.protocol.udp_port
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)
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)
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await peer.ping()
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return peer
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@skip("Something from a previous test is leaking into this test and causing it to fail intermittently")
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async def test_announce_blobs(self):
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blob1 = binascii.hexlify(b'1' * 48).decode()
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blob2 = binascii.hexlify(b'2' * 48).decode()
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async with self._test_network_context():
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await self.storage.add_blobs((blob1, 1024), (blob2, 1024), finished=True)
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await self.storage.db.execute(
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"update blob set next_announce_time=0, should_announce=1 where blob_hash in (?, ?)",
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(blob1, blob2)
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)
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to_announce = await self.storage.get_blobs_to_announce()
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self.assertEqual(2, len(to_announce))
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self.blob_announcer.start(batch_size=1) # so it covers batching logic
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# takes 60 seconds to start, but we advance 120 to ensure it processed all batches
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await self.advance(60.0 * 2)
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to_announce = await self.storage.get_blobs_to_announce()
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self.assertEqual(0, len(to_announce))
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self.blob_announcer.stop()
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# test that we can route from a poorly connected peer all the way to the announced blob
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await self.chain_peer(constants.generate_id(10), '1.2.3.10')
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await self.chain_peer(constants.generate_id(11), '1.2.3.11')
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await self.chain_peer(constants.generate_id(12), '1.2.3.12')
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await self.chain_peer(constants.generate_id(13), '1.2.3.13')
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await self.chain_peer(constants.generate_id(14), '1.2.3.14')
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await self.advance(61.0)
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last = self.nodes[len(self.nodes) - 1]
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search_q, peer_q = asyncio.Queue(loop=self.loop), asyncio.Queue(loop=self.loop)
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search_q.put_nowait(blob1)
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_, task = last.accumulate_peers(search_q, peer_q)
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found_peers = await peer_q.get()
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task.cancel()
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self.assertEqual(1, len(found_peers))
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self.assertEqual(self.node.protocol.node_id, found_peers[0].node_id)
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self.assertEqual(self.node.protocol.external_ip, found_peers[0].address)
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self.assertEqual(self.node.protocol.peer_port, found_peers[0].tcp_port)
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async def test_popular_blob(self):
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peer_count = 150
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addresses = [
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(constants.generate_id(i + 1), socket.inet_ntoa(int(i + 0x01000001).to_bytes(length=4, byteorder='big')))
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for i in range(peer_count)
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]
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blob_hash = b'1' * 48
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async with self._test_network_context(peer_addresses=addresses):
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total_seen = set()
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announced_to = self.nodes[0]
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for i in range(1, peer_count):
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node = self.nodes[i]
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kad_peer = make_kademlia_peer(
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node.protocol.node_id, node.protocol.external_ip, node.protocol.udp_port
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)
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await announced_to.protocol._add_peer(kad_peer)
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peer = node.protocol.get_rpc_peer(
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make_kademlia_peer(
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announced_to.protocol.node_id,
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announced_to.protocol.external_ip,
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announced_to.protocol.udp_port
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)
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)
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response = await peer.store(blob_hash)
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self.assertEqual(response, b'OK')
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peers_for_blob = await peer.find_value(blob_hash, 0)
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if i == 1:
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self.assertNotIn(blob_hash, peers_for_blob)
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self.assertEqual(peers_for_blob[b'p'], 0)
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else:
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self.assertEqual(len(peers_for_blob[blob_hash]), min(i - 1, constants.K))
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self.assertEqual(len(announced_to.protocol.data_store.get_peers_for_blob(blob_hash)), i)
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if i - 1 > constants.K:
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self.assertEqual(len(peers_for_blob[b'contacts']), constants.K)
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self.assertEqual(peers_for_blob[b'p'], ((i - 1) // (constants.K + 1)) + 1)
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seen = set(peers_for_blob[blob_hash])
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self.assertEqual(len(seen), constants.K)
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self.assertEqual(len(peers_for_blob[blob_hash]), len(seen))
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for pg in range(1, peers_for_blob[b'p']):
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page_x = await peer.find_value(blob_hash, pg)
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self.assertNotIn(b'contacts', page_x)
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page_x_set = set(page_x[blob_hash])
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self.assertEqual(len(page_x[blob_hash]), len(page_x_set))
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self.assertGreater(len(page_x_set), 0)
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self.assertSetEqual(seen.intersection(page_x_set), set())
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seen.intersection_update(page_x_set)
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total_seen.update(page_x_set)
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else:
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self.assertEqual(len(peers_for_blob[b'contacts']), i - 1)
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self.assertEqual(len(total_seen), peer_count - 2)
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