Merge branch 'random-topology-testing' of https://github.com/libp2p/py-libp2p into random-topology-testing

libp2p/pubsub/floodsub.py

@@ -78,9 +78,6 @@ class FloodSub(IPubsubRouter):
                             new_packet = rpc_pb2.RPC()
                             new_packet.publish.extend([message])
                             await stream.write(new_packet.SerializeToString())
-                        else:
-                            # Implies publish did not write
-                            print("publish did not write")
 
     def join(self, topic):
         """

libp2p/stream_muxer/mplex/mplex.py

@@ -60,7 +60,7 @@ class Mplex(IMuxedConn):
         # TODO: pass down timeout from user and use that
         if stream_id in self.buffers:
             try:
-                data = await asyncio.wait_for(self.buffers[stream_id].get(), timeout=8)
+                data = await asyncio.wait_for(self.buffers[stream_id].get(), timeout=5000)
                 return data
             except asyncio.TimeoutError:
                 return None

requirements_dev.txt

@@ -5,3 +5,4 @@ pytest-asyncio
 pylint
 grpcio
 grpcio-tools
+pyvis

tests/pubsub/test_floodsub.py

@@ -175,6 +175,8 @@ async def perform_test_from_obj(obj):
     topics_in_msgs_ordered = []
     messages = obj["messages"]
     tasks_publish = []
+
+    all_actual_msgs = {}
     for msg in messages:
         topics = msg["topics"]
 
@@ -196,7 +198,10 @@ async def perform_test_from_obj(obj):
         # TODO: Update message sender to be correct message sender before
         # adding msg_talk to this list
         for topic in topics:
-            topics_in_msgs_ordered.append((topic, msg_talk))
+            if topic in all_actual_msgs:
+                all_actual_msgs[topic].append(msg_talk.publish[0].SerializeToString())
+            else:
+                all_actual_msgs[topic] = [msg_talk.publish[0].SerializeToString()]
 
     # Allow time for publishing before continuing
     # await asyncio.sleep(0.4)
@@ -204,13 +209,22 @@ async def perform_test_from_obj(obj):
     await asyncio.gather(*tasks_publish)
 
     # Step 4) Check that all messages were received correctly.
-    # TODO: Check message sender too
-    for i in range(len(topics_in_msgs_ordered)):
-        topic, actual_msg = topics_in_msgs_ordered[i]
+    for topic in all_actual_msgs:
         for node_id in topic_map[topic]:
+            all_received_msgs_in_topic = []
+
+            # Add all messages to message received list for given node in given topic
+            while (queues_map[node_id][topic].qsize() > 0):
                 # Get message from subscription queue
-            msg_on_node_str = await queues_map[node_id][topic].get()
-            assert actual_msg.publish[0].SerializeToString() == msg_on_node_str.SerializeToString()
+                msg_on_node = (await queues_map[node_id][topic].get()).SerializeToString() 
+                all_received_msgs_in_topic.append(msg_on_node)
+
+            # Ensure each message received was the same as one sent
+            for msg_on_node in all_received_msgs_in_topic:
+                assert msg_on_node in all_actual_msgs[topic]
+
+            # Ensure same number of messages received as sent
+            assert len(all_received_msgs_in_topic) == len(all_actual_msgs[topic])
 
     # Success, terminate pending tasks.
     await cleanup()

tests/pubsub/test_random_topology.py

@@ -0,0 +1,383 @@
+import asyncio
+import multiaddr
+import pytest
+import random
+import pprint
+
+from pyvis.network import Network
+from tests.utils import cleanup
+from libp2p import new_node
+from libp2p.peer.peerinfo import info_from_p2p_addr
+from libp2p.pubsub.pb import rpc_pb2
+from libp2p.pubsub.pubsub import Pubsub
+from libp2p.pubsub.floodsub import FloodSub
+from utils import generate_message_id, generate_RPC_packet
+
+# pylint: disable=too-many-locals
+
+async def connect(node1, node2):
+    """
+    Connect node1 to node2
+    """
+    addr = node2.get_addrs()[0]
+    info = info_from_p2p_addr(addr)
+    await node1.connect(info)
+
+async def perform_test_from_obj(obj,timeout_len=2):
+    """
+    Perform a floodsub test from a test obj.
+    test obj are composed as follows:
+    
+    {
+        "supported_protocols": ["supported/protocol/1.0.0",...],
+        "adj_list": {
+            "node1": ["neighbor1_of_node1", "neighbor2_of_node1", ...],
+            "node2": ["neighbor1_of_node2", "neighbor2_of_node2", ...],
+            ...
+        },
+        "topic_map": {
+            "topic1": ["node1_subscribed_to_topic1", "node2_subscribed_to_topic1", ...]
+        },
+        "messages": [
+            {
+                "topics": ["topic1_for_message", "topic2_for_message", ...],
+                "data": "some contents of the message (newlines are not supported)",
+                "node_id": "message sender node id"
+            },
+            ...
+        ]
+    }
+    NOTE: In adj_list, for any neighbors A and B, only list B as a neighbor of A
+    or B as a neighbor of A once. Do NOT list both A: ["B"] and B:["A"] as the behavior
+    is undefined (even if it may work)
+    """
+
+    # Step 1) Create graph
+    adj_list = obj["adj_list"]
+    node_map = {}
+    floodsub_map = {}
+    pubsub_map = {}
+
+    supported_protocols = obj["supported_protocols"]
+
+    tasks_connect = []
+    for start_node_id in adj_list:
+        # Create node if node does not yet exist
+        if start_node_id not in node_map:
+            node = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
+            await node.get_network().listen(multiaddr.Multiaddr("/ip4/127.0.0.1/tcp/0"))
+
+            node_map[start_node_id] = node
+
+            floodsub = FloodSub(supported_protocols)
+            floodsub_map[start_node_id] = floodsub
+            pubsub = Pubsub(node, floodsub, start_node_id)
+            pubsub_map[start_node_id] = pubsub
+
+        # For each neighbor of start_node, create if does not yet exist,
+        # then connect start_node to neighbor
+        for neighbor_id in adj_list[start_node_id]:
+            # Create neighbor if neighbor does not yet exist
+            if neighbor_id not in node_map:
+                neighbor_node = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
+                await neighbor_node.get_network().listen(multiaddr.Multiaddr("/ip4/127.0.0.1/tcp/0"))
+                
+                node_map[neighbor_id] = neighbor_node
+
+                floodsub = FloodSub(supported_protocols)
+                floodsub_map[neighbor_id] = floodsub
+                pubsub = Pubsub(neighbor_node, floodsub, neighbor_id)
+                pubsub_map[neighbor_id] = pubsub
+
+            # Connect node and neighbor
+            # await connect(node_map[start_node_id], node_map[neighbor_id])
+            tasks_connect.append(asyncio.ensure_future(connect(node_map[start_node_id], node_map[neighbor_id])))
+    tasks_connect.append(asyncio.sleep(2))
+    await asyncio.gather(*tasks_connect)
+
+    # Allow time for graph creation before continuing
+    # await asyncio.sleep(0.25)
+
+    # Step 2) Subscribe to topics
+    queues_map = {}
+    topic_map = obj["topic_map"]
+
+    tasks_topic = []
+    tasks_topic_data = []
+    for topic in topic_map:
+        for node_id in topic_map[topic]:
+            """
+            # Subscribe node to topic
+            q = await pubsub_map[node_id].subscribe(topic)
+
+            # Create topic-queue map for node_id if one does not yet exist
+            if node_id not in queues_map:
+                queues_map[node_id] = {}
+
+            # Store queue in topic-queue map for node
+            queues_map[node_id][topic] = q
+            """
+            tasks_topic.append(asyncio.ensure_future(pubsub_map[node_id].subscribe(topic)))
+            tasks_topic_data.append((node_id, topic))
+    tasks_topic.append(asyncio.sleep(2))
+
+    # Gather is like Promise.all
+    responses = await asyncio.gather(*tasks_topic, return_exceptions=True)
+    for i in range(len(responses) - 1):
+        q = responses[i]
+        node_id, topic = tasks_topic_data[i]
+        if node_id not in queues_map:
+            queues_map[node_id] = {}
+
+        # Store queue in topic-queue map for node
+        queues_map[node_id][topic] = q
+
+    # Allow time for subscribing before continuing
+    # await asyncio.sleep(0.01)
+
+    # Step 3) Publish messages
+    topics_in_msgs_ordered = []
+    messages = obj["messages"]
+    tasks_publish = []
+
+    all_actual_msgs = {}
+    for msg in messages:
+        topics = msg["topics"]
+
+        data = msg["data"]
+        node_id = msg["node_id"]
+
+        # Get actual id for sender node (not the id from the test obj)
+        actual_node_id = str(node_map[node_id].get_id())
+
+        # Create correctly formatted message
+        msg_talk = generate_RPC_packet(actual_node_id, topics, data, generate_message_id())
+
+        # Publish message
+        # await floodsub_map[node_id].publish(actual_node_id, msg_talk.to_str())
+        tasks_publish.append(asyncio.ensure_future(floodsub_map[node_id].publish(\
+            actual_node_id, msg_talk.SerializeToString())))
+
+        # For each topic in topics, add topic, msg_talk tuple to ordered test list
+        # TODO: Update message sender to be correct message sender before
+        # adding msg_talk to this list
+        for topic in topics:
+            if topic in all_actual_msgs:
+                all_actual_msgs[topic].append(msg_talk.publish[0].SerializeToString())
+            else:
+                all_actual_msgs[topic] = [msg_talk.publish[0].SerializeToString()]
+
+    # Allow time for publishing before continuing
+    # await asyncio.sleep(0.4)
+    tasks_publish.append(asyncio.sleep(2))
+    await asyncio.gather(*tasks_publish)
+
+    # Step 4) Check that all messages were received correctly.
+    for topic in all_actual_msgs:
+        for node_id in topic_map[topic]:
+            all_received_msgs_in_topic = []
+
+            # Add all messages to message received list for given node in given topic
+            while (queues_map[node_id][topic].qsize() > 0):
+                # Get message from subscription queue
+                msg_on_node = (await queues_map[node_id][topic].get()).SerializeToString() 
+                all_received_msgs_in_topic.append(msg_on_node)
+
+            # Ensure each message received was the same as one sent
+            for msg_on_node in all_received_msgs_in_topic:
+                assert msg_on_node in all_actual_msgs[topic]
+
+            # Ensure same number of messages received as sent
+            assert len(all_received_msgs_in_topic) == len(all_actual_msgs[topic])
+
+def generate_test_obj_with_random_params(params):
+    return {
+        "num_nodes": random.randint(params["min_num_nodes"], params["max_num_nodes"]),
+        "density": random.uniform(0.01, params["max_density"]),
+        "num_topics": random.randint(1, params["max_num_topics"]),
+        "max_nodes_per_topic": random.randint(params["min_max_nodes_per_topic"], params["max_max_nodes_per_topic"]),
+        "max_msgs_per_topic": random.randint(params["min_max_msgs_per_topic"], params["max_max_msgs_per_topic"])
+    }
+
+def generate_random_topology(num_nodes, density, num_topics, max_nodes_per_topic, max_msgs_per_topic):
+    # Give nodes string labels so that perform_test_with_obj works correctly
+    # Note: "n" is appended so that visualizations work properly ('00' caused issues)
+    nodes = ["n" + str(i).zfill(2) for i in range(0,num_nodes)]
+
+    # Adjust max_nodes_per_topic if it exceeds number of nodes
+    max_nodes_per_topic = min(max_nodes_per_topic, num_nodes)
+
+    # 1) Generate random graph structure
+
+    # Create initial graph by connecting each node to its previous node
+    # This ensures the graph is connected
+    graph = {}
+
+    graph[nodes[0]] = []
+
+    max_num_edges = num_nodes * (num_nodes - 1) / 2
+    num_edges = 0
+
+    for i in range(1, len(nodes)):
+        prev = nodes[i - 1]
+        curr = nodes[i]
+
+        graph[curr] = [prev]
+        graph[prev].append(curr)
+        num_edges += 1
+
+    # Add random edges until density is hit
+    while num_edges / max_num_edges < density:
+        selected_nodes = random.sample(nodes, 2)
+
+        # Only add the nodes as neighbors if they are not already neighbors
+        if selected_nodes[0] not in graph[selected_nodes[1]]:
+            graph[selected_nodes[0]].append(selected_nodes[1])
+            graph[selected_nodes[1]].append(selected_nodes[0])
+            num_edges += 1
+
+    # 2) Pick num_topics random nodes to perform random walks at 
+    nodes_to_start_topics_from = random.sample(nodes, num_topics)
+
+    nodes_in_topic_list = []
+    for node in nodes_to_start_topics_from:
+        nodes_walked = []
+        curr = node
+        nodes_walked.append(curr)
+
+        # TODO: Pick random num of nodes per topic
+        while len(nodes_walked) < max_nodes_per_topic:
+            # Pick a random neighbor of curr to walk to
+            neighbors = graph[curr]
+            rand_num = random.randint(0, len(neighbors) - 1)
+            neighbor = neighbors[rand_num]
+            curr = neighbor
+            if curr not in nodes_walked:
+                nodes_walked.append(curr)
+
+        nodes_in_topic_list.append(nodes_walked)
+
+    # 3) Start creating test_obj
+    test_obj = {"supported_protocols": ["/floodsub/1.0.0"]}
+    test_obj["adj_list"] = graph
+    test_obj["topic_map"] = {}
+    for i in range(len(nodes_in_topic_list)):
+        test_obj["topic_map"][str(i)] = nodes_in_topic_list[i]
+
+    # 4) Finish creating test_obj by adding messages at random start nodes in each topic
+    test_obj["messages"] = []
+    for i in range(len(nodes_in_topic_list)):
+        nodes_in_topic = nodes_in_topic_list[i]
+        rand_num = random.randint(0, len(nodes_in_topic) - 1)
+        start_node = nodes_in_topic[rand_num]
+        for j in range(max_msgs_per_topic):
+            test_obj["messages"].append({
+                    "topics": [str(i)],
+                    "data": str(random.randint(0, 100000)),
+                    "node_id": str(start_node)
+                })
+
+    # 5) Return completed test_obj
+    return test_obj
+
+def create_graph(test_obj):
+    net = Network()
+    net.barnes_hut()
+
+    adj_list = test_obj["adj_list"]
+    # print(list(adj_list.keys()))
+    nodes_to_add = list(adj_list.keys())
+    net.add_nodes(nodes_to_add)
+    for node in adj_list:
+        neighbors = adj_list[node]
+        for neighbor in neighbors:
+            net.add_edge(node, neighbor)
+
+    net.show("random_topology.html")
+
+@pytest.mark.asyncio
+async def test_simple_random():
+    num_nodes = 5
+    density = 1
+    num_topics = 2
+    max_nodes_per_topic = 5
+    max_msgs_per_topic = 5
+    print("Generating random topology")
+    topology_test_obj = generate_random_topology(num_nodes, density, num_topics,\
+        max_nodes_per_topic, max_msgs_per_topic)
+
+    print("*****Topology Summary*****")
+    print("# nodes: " + str(num_nodes))
+    print("Density: " + str(density))
+    print("# topics: " + str(num_topics))
+    print("Nodes per topic: " + str(max_nodes_per_topic))
+    print("Msgs per topic: " + str(max_msgs_per_topic))
+    print("**************************")
+
+    print("Performing Test")
+    await perform_test_from_obj(topology_test_obj, timeout_len=20)
+    print("Test Completed")
+    print("Generating Graph")
+    create_graph(topology_test_obj)
+    print("Graph Generated")
+
+    # Success, terminate pending tasks.
+    await cleanup()
+
+@pytest.mark.asyncio
+async def test_random_10():
+    min_num_nodes = 8
+    max_num_nodes = 10
+    max_density = 0.4
+    max_num_topics = 5
+    min_max_nodes_per_topic = 10
+    max_max_nodes_per_topic = 20
+    min_max_msgs_per_topic = 10
+    max_max_msgs_per_topic = 20
+
+    num_random_tests = 10
+
+    summaries = []
+
+    params_to_generate_random_params = {
+                "min_num_nodes": min_num_nodes,
+                "max_num_nodes": max_num_nodes,
+                "max_density": max_density,
+                "max_num_topics": max_num_topics,
+                "min_max_nodes_per_topic": min_max_nodes_per_topic,
+                "max_max_nodes_per_topic": max_max_nodes_per_topic,
+                "min_max_msgs_per_topic": min_max_msgs_per_topic,
+                "max_max_msgs_per_topic": max_max_msgs_per_topic
+            }
+
+    for i in range(0, num_random_tests):
+        random_params = generate_test_obj_with_random_params(params_to_generate_random_params)
+
+        print("Generating random topology")
+        topology_test_obj = generate_random_topology(random_params["num_nodes"], random_params["density"],\
+            random_params["num_topics"], random_params["max_nodes_per_topic"], \
+            random_params["max_msgs_per_topic"])
+
+        summary = {
+            "num_nodes": random_params["num_nodes"],
+            "density": random_params["density"],
+            "num_topics": random_params["num_topics"],
+            "nodes_per_topics": random_params["max_nodes_per_topic"],
+            "msgs_per_topics": random_params["max_msgs_per_topic"]
+        }
+        summaries.append(pprint.pformat(summary, indent=4))
+
+        print("Performing Test")
+        await perform_test_from_obj(topology_test_obj, timeout_len=30)
+        print("Test Completed")
+        # print("Generating Graph")
+        # create_graph(topology_test_obj)
+        # print("Graph Generated")
+        print("***Test " + str(i + 1) + "/" + str(num_random_tests) + " Completed***")
+
+    with open('summaries.rand_test', 'a') as out_file:
+        out_file.write(pprint.pformat(summaries, indent=4))
+
+    # Success, terminate pending tasks.
+    await cleanup()
+