Gossipsub Simulations (#9)

* episub-sim

* network generation

* mainnet network generation

* no pretty print

* add small network for testing

* upgrade versions, make the thing compile

* checkpoint

* this is ridiculous

* make gen_topology reachable by testground

* add 16 instsances for testing

* add running command

* remove params

* pass new participants param

* update upstream reg

* update upstream reg

* put msg generation back in

* put publishing back in

* adding metrics

* record metrics on intervals

* add gossip max limit

* stop fghting testground. For now

* update README

* Revert "stop fghting testground. For now"

This reverts commit a976c5371b.

* use composition files to get the docker build context a layer up

* fix params and logs

* remove unused files

* cache workspace deps

* cache workspace deps _the right_ way

* updates

* some docs

* Update CI and remove root workspace

* Add duplicates, fix clippy, improve dash

* Reduce message sizes, some debugging

* Update dash and logs

* Add scripts folder

* Fix executor lockup

* fmt and clippy

* Add some docs

* Dot to mermaid

Co-authored-by: Diva M <divma@protonmail.com>

.dockerignore

@@ -0,0 +1,3 @@
+target/
+*.data
+*.tar.gz

.github/workflows/ci.yml

@@ -7,20 +7,25 @@ on:
       - main
 
 jobs:
-
   cargo-fmt:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        simulations: ["eth_consensus", "censoring", "smoke"]
     steps:
     - uses: actions/checkout@v2
     - name: Get latest version of stable rust
       run: rustup update stable
     - name: Check formatting with cargofmt
-      run: cargo fmt --all -- --check
+      run: cd "${{ matrix.simulations }}" && cargo fmt --all -- --check
 
   clippy:
+    needs: cargo-fmt
     name: clippy
     runs-on: ubuntu-latest
-    needs: cargo-fmt
+    strategy:
+      matrix:
+        simulations: ["eth_consensus", "censoring", "smoke"]
     steps:
     - uses: actions/checkout@v1
     - name: Install protoc
@@ -32,6 +37,6 @@ jobs:
     - name: Install Protoc
       uses: arduino/setup-protoc@64c0c85d18e984422218383b81c52f8b077404d3 # v1.1.2
     - name: Lint code for quality and style with Clippy
-      run: cargo clippy --workspace --tests -- -D warnings
+      run: cd "${{ matrix.simulations }}" && cargo clippy --workspace --tests -- -D warnings
     - name: Certify Cargo.lock freshness
-      run: git diff --exit-code Cargo.lock
+      run: cd "${{ matrix.simulations }}" && git diff --exit-code Cargo.lock

Cargo.toml

@@ -1,6 +0,0 @@
-[workspace]
-
-members = [
-    "smoke",
-    "censoring",
-]

README.md

@@ -41,6 +41,15 @@ be examined to determine their effectiveness.
 See the [censoring documentation](./censoring/README) for instructions on how to run
 the simulation.
 
+### [Ethereum Consensus](./eth_consensus/README.md)
+
+This is a simulation of the standard gossipsub network for various sizes of the
+Ethereum consensus layer. It can be used in some forms to model network traffic
+for the Ethereum consensus layer.
+
+See the [Ethereum consensus documentation](./eth_consensus/README) for instructions on how to run
+the simulation.
+
 ## Dashboards
 
 Grafana dashboards are provided for some of the simulations. These are provided

censoring/README.md

@@ -7,7 +7,7 @@ parameters to mitigate censoring attacks on gossipsub networks.
 ## Running the simulation
 
 ```shell
-testground run composition -f censoring/compositions/censoring.toml --wait
+testground run composition -f censoring/compositions/composition.toml --wait
 ```
 
 ## How the Simulation Works

docker-compose.yml

@@ -9,6 +9,7 @@ services:
       - ./grafana/datasources.yml:/etc/grafana/provisioning/datasources/datasources.yml
       - ./grafana/dashboards.yml:/etc/grafana/provisioning/dashboards/dashboards.yml
       - ./censoring/dashboards:/var/lib/grafana/dashboards/censoring
+      - ./eth_consensus/dashboards:/var/lib/grafana/dashboards/eth_consensus
 
 networks:
   # Connect containers to `testground-control` to access Testground-supplied containers.

eth_consensus/.dockerignore

@@ -0,0 +1,3 @@
+target/
+*.data
+*.tar.gz

eth_consensus/Cargo.toml

@@ -0,0 +1,26 @@
+[workspace]
+
+members = [
+	"simulation",
+    "utils/gen_topology",
+    "utils/gen_topology_files"
+]
+
+[workspace.dependencies]
+serde_json = "1.0"
+serde = "1.0"
+testground = "0.4.0"
+tokio = { version = "1.21.2", features = ["macros"] }
+tracing = "0.1.35"
+tracing-subscriber = { version = "0.3.14", features = ["env-filter"] }
+
+[patch]
+[patch.crates-io]
+types = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+eth2_ssz = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+eth2_ssz_types = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+eth2_serde_utils = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+tree_hash = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+eth2_hashing = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+eth2_ssz_derive = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }
+tree_hash_derive = { git = "https://github.com/divagant-martian/lighthouse", branch = "sizes" }

eth_consensus/Dockerfile

@@ -0,0 +1,32 @@
+# Get chef
+FROM rust:1.65-bullseye as chef
+WORKDIR test-plan
+RUN cargo install cargo-chef
+
+# Get chef to create a skeleton workspace
+FROM chef AS planner
+COPY ./plan .
+RUN cargo chef prepare --recipe-path recipe.json
+
+FROM chef as builder
+# Build dependencies
+RUN apt-get update && apt-get -y upgrade && apt-get install -y protobuf-compiler
+COPY --from=planner /test-plan/recipe.json ./recipe.json
+
+# Cache the deps using the fake workspace
+RUN cargo chef cook --release --recipe-path recipe.json
+
+# Get the real code
+COPY ./plan .
+
+# Enjoy
+RUN cargo build --release -p simulation
+
+FROM debian:bullseye-slim
+
+COPY --from=builder /test-plan/target/release/simulation /usr/local/bin/eth_consensus
+
+#ENV RUST_LOG=libp2p_gossipsub=debug,simulation=debug
+ENV RUST_LOG=simulation=info
+
+ENTRYPOINT ["eth_consensus"]

eth_consensus/README.md

@@ -0,0 +1,80 @@
+# Ethereum Consensus Simulation
+
+This simulation mimics the timing, frequency and sizes of messages that would usually
+occur on a normal Ethereum consensus gossipsub-network. The simulation can
+specify the number of validators and nodes on the network in an attempt to
+model various sizes of Ethereum consensus networks.
+
+## Running the Simulation
+
+This simulation can be run with the following command (from within the repos
+root directory):
+
+```sh
+testground run composition -f ./eth_consensus/compositions/composition.toml --wait
+```
+
+Various aspects of the simulation can be modified. Please read the `eth_consensus/manifest.toml` to understand test parameters and `eth_consensus/compositions/composition.toml` to modify them.
+
+
+## Influx DB Queries
+
+The results of the simulation are stored in an Influx DB instance. Queries
+inside grafana can be used to build dashboards. An example query is given:
+
+`SELECT derivative("count", 10s) FROM "topic_msg_recv_bytes" WHERE $timeFilter GROUP BY "hash", "instance_name", "run_id"`
+
+`derivative` = calculation of the rate
+`hash` the topic
+`instance_name` the number given to the instance inside the test run starting from 0
+`run_id` the id of the run
+
+## Controlling the Topology
+
+The topology of the network can be created and visualised using the `utils/gen_topology` and `utils/gen_topology_files` crate.
+
+The `gen_topology_files` binary can output json and dot files to visualise and
+understand the topology of the network to be created.
+
+There are a number of input parameters required for generating a network
+topology, each of these can be customised in the composition file
+`compositions/composition.toml`. 
+
+- `seed`: int - This is what is used to seed the random number generator and
+	can control differing variants of the topology by changing this number.
+- `total_validators`: int - This is the total number of validators to be used
+	within the network.
+- `total_node_with_vals`: int - The total number of nodes that will be assigned
+	validators
+- `min_peer_per_node`: int - The minimum number of connections per node to
+	target when generating the node topology
+- `max_peers_per_node`: int  - The maximum number of connections per node to
+	target when generating the node topology
+
+These parameters can be set in the composition in order to generate a specific
+topology for the simulation.
+
+To visualise the topology, a dot file and json file can be produced by running:
+```
+cargo run --bin gen_topology_file <seed> <total_validators>
+<total_node_with_vals> <min_peer_per_node> <max_peer_per_node>
+<output-dot-file> <output-json-file>
+```
+
+an example is:
+
+```
+cargo run --bin gen_topology_file 40 200 2 3 2 3 output.dot output.json
+```
+
+Which produces the following topology:
+
+```mermaid
+graph TD; 
+	0-->2;
+	0-->3;
+	1-->2;
+	2-->4;
+	3-->1;
+	4-->1;
+```

eth_consensus/compositions/composition.toml

@@ -0,0 +1,20 @@
+[metadata]
+name = "eth_consensus"
+
+[global]
+  builder = "docker:generic"
+  plan = "gossipsub-testground/eth_consensus"
+  case = "eth_consensus"
+  runner = "local:docker"
+
+  [global.build_config]
+    path = "./"
+
+[[groups]]
+  id = "main-instances"
+  instances = { count = 3 }
+
+  [groups.run]
+  # Check the plan (./eth_consensus/manifest.toml) to understand the meaning of each param
+  test_params = { seed = "40", no_val_percentage = "60", total_validators = "200", min_peers_per_node = "2", max_peers_per_node_inclusive = "3", run = "120" }
+

eth_consensus/manifest.toml

@@ -0,0 +1,23 @@
+name = "eth_consensus"
+
+[defaults]
+builder = "docker:generic"
+runner = "local:docker"
+disable_metrics = false
+
+[builders."docker:generic"]
+enabled = true
+
+[runners."local:docker"]
+enabled = true
+
+[[testcases]]
+name = "eth_consensus"
+instances = { min = 3, max = 100, default = 3 }
+  [testcases.params]
+  seed = { type = "int", desc = "Seed to use for the rng", default = 40 }
+  no_val_percentage = { type = "int", desc = "% of nodes without vals", default = 60 }
+  total_validators = { type = "int", desc = "number of validators", default = 200 }
+  min_peers_per_node = { type = "int", desc = "minimum number of peers to connect to", default = 2 }
+  max_peers_per_node_inclusive = { type = "int", desc = "maximum number of peers to connect to", default = 3 }
+  run = { type = "int", desc = "Time to run the emulation", default=120, unit="sec" }

eth_consensus/simulation/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "simulation"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = { version = "0.4.19", features = [ "std" ]}
+delay_map = "0.1.1"
+
+# libp2p = { version = "0.48.0", default-features = false, features = ["gossipsub", "dns-tokio", "tcp-tokio", "noise", "mplex", "yamux", "serde"] }
+prometheus-client = { git = "https://github.com/prometheus/client_rust.git", rev = "682b24ee8c6c857b76c0683b1dd7df5a97b75c27", features = ["protobuf"] }
+libp2p = { git = "https://github.com/ackintosh/rust-libp2p.git", branch = "prometheus-ptotobuf-support", default-features = false, features = ["gossipsub", "dns-tokio", "tcp-tokio", "noise", "mplex", "yamux", "serde"] }
+serde_json = "1.0"
+serde = "1.0"
+testground = "0.4.0"
+tokio = { version = "1.21.2", features = ["macros"] }
+tracing = "0.1.35"
+tracing-subscriber = { version = "0.3.14", features = ["env-filter"] }
+gen_topology = { path = "../utils/gen_topology" }
+futures = "0.3.24"
+npg = { git = "https://github.com/sigp/eth-npg", branch = "timing-change" }
+sha2 = "0.10.6"

eth_consensus/simulation/src/main.rs

@@ -0,0 +1,60 @@
+mod node_run;
+mod utils;
+
+use crate::utils::publish_and_collect;
+use libp2p::identity::Keypair;
+use libp2p::multiaddr::Protocol;
+use libp2p::{Multiaddr, PeerId};
+use serde::{Deserialize, Serialize};
+use testground::client::Client;
+use tracing::info;
+
+use std::collections::HashMap;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    if let Ok(env_filter) = tracing_subscriber::EnvFilter::try_from_default_env() {
+        tracing_subscriber::fmt().with_env_filter(env_filter).init();
+    }
+
+    let client = Client::new_and_init().await?;
+
+    let local_key = Keypair::generate_ed25519();
+    let peer_id = PeerId::from(local_key.public());
+    let multiaddr = {
+        let mut multiaddr = Multiaddr::from(
+            client
+                .run_parameters()
+                .data_network_ip()?
+                .expect("Should have an IP address for the data network"),
+        );
+        multiaddr.push(Protocol::Tcp(9000));
+        multiaddr
+    };
+
+    // The network definition starts at 0 and the testground sequences start at 1, so adjust
+    // accordingly.
+    let node_id = client.global_seq() as usize - 1;
+    info!("THIS IS MY NUMBER {node_id}");
+    let instance_info = InstanceInfo { peer_id, multiaddr };
+
+    let participants = {
+        let infos =
+            publish_and_collect("node_info", &client, (node_id, instance_info.clone())).await?;
+        info!("Found {}", infos.len());
+        infos
+            .into_iter()
+            .filter(|(other_node_id, _)| *other_node_id != node_id)
+            .collect::<HashMap<usize, InstanceInfo>>()
+    };
+
+    node_run::run(client, node_id, instance_info, participants, local_key).await?;
+
+    Ok(())
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+struct InstanceInfo {
+    peer_id: PeerId,
+    multiaddr: Multiaddr,
+}

eth_consensus/simulation/src/node_run.rs

@@ -0,0 +1,665 @@
+use crate::utils::{
+    queries_for_counter, queries_for_counter_join, queries_for_gauge, queries_for_histogram,
+    record_instance_info, BARRIER_LIBP2P_READY, BARRIER_TOPOLOGY_READY,
+};
+use crate::InstanceInfo;
+use chrono::{DateTime, Utc};
+use gen_topology::Params;
+use libp2p::core::muxing::StreamMuxerBox;
+use libp2p::core::upgrade::{SelectUpgrade, Version};
+use libp2p::dns::TokioDnsConfig;
+use libp2p::futures::StreamExt;
+use libp2p::gossipsub::metrics::Config;
+use libp2p::gossipsub::subscription_filter::AllowAllSubscriptionFilter;
+use libp2p::gossipsub::{
+    Gossipsub, GossipsubConfigBuilder, GossipsubEvent, GossipsubMessage, IdentTopic,
+    IdentityTransform, MessageAuthenticity, MessageId, PeerScoreParams, PeerScoreThresholds,
+    Topic as GossipTopic, ValidationMode,
+};
+use libp2p::identity::Keypair;
+use libp2p::mplex::MplexConfig;
+use libp2p::noise::NoiseConfig;
+use libp2p::swarm::{SwarmBuilder, SwarmEvent};
+use libp2p::tcp::{GenTcpConfig, TokioTcpTransport};
+use libp2p::yamux::YamuxConfig;
+use libp2p::PeerId;
+use libp2p::Swarm;
+use libp2p::Transport;
+use npg::slot_generator::{Subnet, ValId};
+use npg::{Generator, Message};
+use prometheus_client::encoding::proto::openmetrics_data_model::MetricSet;
+use prometheus_client::encoding::proto::EncodeMetric;
+use prometheus_client::registry::Registry;
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+use std::collections::{HashMap, HashSet};
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+use testground::client::Client;
+use tokio::time::{interval, Interval};
+use tracing::{debug, error, info};
+
+const ATTESTATION_SUBNETS: u64 = 4;
+const SYNC_SUBNETS: u64 = 4;
+const SLOTS_PER_EPOCH: u64 = 2;
+const SLOT_DURATION: u64 = 12;
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+enum Topic {
+    Blocks,
+    Attestations(u64),
+    Aggregates(u64),
+    SyncMessages(u64),
+    SignedContributionAndProof(u64),
+}
+
+impl From<Topic> for IdentTopic {
+    fn from(t: Topic) -> Self {
+        let rep = serde_json::to_string(&t).expect("json serialization of topics never fails");
+        GossipTopic::new(rep)
+    }
+}
+
+impl From<IdentTopic> for Topic {
+    fn from(t: IdentTopic) -> Self {
+        let repr = t.hash().into_string();
+        serde_json::from_str(&repr).expect("json deserialization of topics never fails")
+    }
+}
+
+pub(crate) fn parse_params(
+    instance_count: usize,
+    instance_params: HashMap<String, String>,
+) -> Result<(Duration, Params), Box<dyn std::error::Error>> {
+    let seed = instance_params
+        .get("seed")
+        .ok_or("seed is not specified.")?
+        .parse::<u64>()?;
+    let no_val_percentage = instance_params
+        .get("no_val_percentage")
+        .ok_or("`no_val_percentage` is not specified")?
+        .parse::<usize>()?
+        .min(100);
+    let total_validators = instance_params
+        .get("total_validators")
+        .ok_or("`total_validators` not specified")?
+        .parse::<usize>()
+        .map_err(|e| format!("Error reading total_validators {}", e))?;
+    let min_peers_per_node = instance_params
+        .get("min_peers_per_node")
+        .ok_or("`min_peers_per_node` not specified")?
+        .parse::<usize>()?;
+    let max_peers_per_node_inclusive = instance_params
+        .get("max_peers_per_node_inclusive")
+        .ok_or("`max_peers_per_node_inclusive` not specified")?
+        .parse::<usize>()?;
+    let total_nodes_without_vals = instance_count * no_val_percentage / 100;
+    let total_nodes_with_vals = instance_count - total_nodes_without_vals;
+    let run = instance_params
+        .get("run")
+        .ok_or("run is not specified.")?
+        .parse::<u64>()?;
+
+    let params = Params::new(
+        seed,
+        total_validators,
+        total_nodes_with_vals,
+        total_nodes_without_vals,
+        min_peers_per_node,
+        max_peers_per_node_inclusive,
+    )?;
+
+    Ok((Duration::from_secs(run), params))
+}
+
+pub(crate) async fn run(
+    client: Client,
+    node_id: usize,
+    instance_info: InstanceInfo,
+    participants: HashMap<usize, InstanceInfo>,
+    keypair: Keypair,
+) -> Result<(), Box<dyn std::error::Error>> {
+    let test_instance_count = client.run_parameters().test_instance_count;
+    let (run_duration, params) = parse_params(
+        test_instance_count as usize,
+        client.run_parameters().test_instance_params,
+    )?;
+
+    let (params, outbound_peers, validator_assignments) =
+        gen_topology::Network::generate(params)?.destructure();
+
+    info!(
+        "Running with params {params:?} and {} participants",
+        participants.len()
+    );
+    let validator_set = validator_assignments
+        .get(&node_id)
+        .cloned()
+        .unwrap_or_default();
+    info!("[{}] Validators on this node: {:?}", node_id, validator_set);
+    let validator_set: HashSet<ValId> =
+        validator_set.into_iter().map(|v| ValId(v as u64)).collect();
+
+    record_instance_info(
+        &client,
+        node_id,
+        &instance_info.peer_id,
+        &client.run_parameters().test_run,
+    )
+    .await?;
+
+    let registry: Registry<Box<dyn EncodeMetric>> = Registry::default();
+    let mut network = Network::new(
+        registry,
+        keypair,
+        node_id,
+        instance_info,
+        participants.clone(),
+        client.clone(),
+        validator_set,
+        params,
+    );
+
+    client
+        .signal_and_wait(BARRIER_TOPOLOGY_READY, test_instance_count)
+        .await?;
+
+    // Set up the listening address
+    network.start_libp2p().await;
+
+    client
+        .signal_and_wait(BARRIER_LIBP2P_READY, test_instance_count)
+        .await?;
+    // Dial the designated outbound peers
+    network.dial_peers(outbound_peers).await;
+
+    client
+        .signal_and_wait(
+            BARRIER_TOPOLOGY_READY,
+            client.run_parameters().test_instance_count,
+        )
+        .await?;
+
+    if let Err(e) = network.subscribe_topics() {
+        error!("[{}] Failed to subscribe to topics {e}", network.node_id);
+    };
+    network.run_sim(run_duration).await;
+
+    client.record_success().await?;
+    Ok(())
+}
+
+/// Set up an encrypted TCP transport over the Mplex and Yamux protocols.
+fn build_transport(keypair: &Keypair) -> libp2p::core::transport::Boxed<(PeerId, StreamMuxerBox)> {
+    let transport = TokioDnsConfig::system(TokioTcpTransport::new(
+        GenTcpConfig::default().nodelay(true),
+    ))
+    .expect("DNS config");
+
+    let noise_keys = libp2p::noise::Keypair::<libp2p::noise::X25519Spec>::new()
+        .into_authentic(keypair)
+        .expect("Signing libp2p-noise static DH keypair failed.");
+
+    transport
+        .upgrade(Version::V1)
+        .authenticate(NoiseConfig::xx(noise_keys).into_authenticated())
+        .multiplex(SelectUpgrade::new(
+            YamuxConfig::default(),
+            MplexConfig::default(),
+        ))
+        .timeout(Duration::from_secs(20))
+        .boxed()
+}
+
+// A context struct for passing information into the `record_metrics` function that can be spawned
+// into its own task.
+struct RecordMetricsInfo {
+    client: Arc<Client>,
+    metrics: MetricSet,
+    node_id: usize,
+    instance_info: InstanceInfo,
+    current: DateTime<Utc>,
+}
+
+pub(crate) struct Network {
+    /// Libp2p2 swarm.
+    swarm: Swarm<Gossipsub>,
+    /// Node id for this node, local to the test run.
+    node_id: usize,
+    /// This nodes contact info.
+    instance_info: InstanceInfo,
+    /// Metrics registry.
+    registry: Registry<Box<dyn EncodeMetric>>,
+    /// Information of every other participant in the network, indexed by their (local to the test
+    /// run) node_id.
+    participants: HashMap<usize, InstanceInfo>,
+    /// Testground client.
+    client: Arc<Client>,
+    /// Chronos time reported by testground as the start of the test run.
+    start_time: DateTime<Utc>,
+    /// Instant in which the simmulation starts running, according to the local time.
+    local_start_time: Instant,
+    /// How often metrics are recorded.
+    metrics_interval: Interval,
+    /// Generator of messages per slot.
+    messages_gen: Generator,
+}
+
+impl Network {
+    #[allow(clippy::too_many_arguments)]
+    fn new(
+        mut registry: Registry<Box<dyn EncodeMetric>>,
+        keypair: Keypair,
+        node_id: usize,
+        instance_info: InstanceInfo,
+        participants: HashMap<usize, InstanceInfo>,
+        client: Client,
+        validator_set: HashSet<ValId>,
+        params: Params,
+    ) -> Self {
+        let gossipsub = {
+            let gossip_message_id = move |message: &GossipsubMessage| {
+                MessageId::from(
+                    &Sha256::digest([message.topic.as_str().as_bytes(), &message.data].concat())
+                        [..20],
+                )
+            };
+
+            let gossipsub_config = GossipsubConfigBuilder::default()
+                .max_transmit_size(10 * 1_048_576) // gossip_max_size(true)
+                // .heartbeat_interval(Duration::from_secs(1))
+                .prune_backoff(Duration::from_secs(60))
+                .mesh_n(8)
+                .mesh_n_low(4)
+                .mesh_n_high(12)
+                .gossip_lazy(6)
+                .fanout_ttl(Duration::from_secs(60))
+                .history_length(12)
+                .max_messages_per_rpc(Some(500)) // Responses to IWANT can be quite large
+                .history_gossip(3)
+                // .validate_messages() // TODO: Reintroduce message validation delays
+                .validation_mode(ValidationMode::Anonymous)
+                .duplicate_cache_time(Duration::from_secs(SLOT_DURATION * SLOTS_PER_EPOCH + 1))
+                .message_id_fn(gossip_message_id)
+                .allow_self_origin(true)
+                .build()
+                .expect("valid gossipsub configuration");
+
+            let mut gs = Gossipsub::new_with_subscription_filter_and_transform(
+                MessageAuthenticity::Anonymous,
+                gossipsub_config,
+                Some((&mut registry, Config::default())),
+                AllowAllSubscriptionFilter {},
+                IdentityTransform {},
+            )
+            .expect("Valid configuration");
+
+            // Setup the scoring system.
+            let peer_score_params = PeerScoreParams::default();
+            gs.with_peer_score(peer_score_params, PeerScoreThresholds::default())
+                .expect("Valid score params and thresholds");
+
+            gs
+        };
+
+        let swarm = SwarmBuilder::new(
+            build_transport(&keypair),
+            gossipsub,
+            PeerId::from(keypair.public()),
+        )
+        .executor(Box::new(|future| {
+            tokio::spawn(future);
+        }))
+        .build();
+
+        info!(
+            "[{}] running with {} validators",
+            node_id,
+            validator_set.len()
+        );
+
+        let genesis_slot = 0;
+        let genesis_duration = Duration::ZERO;
+        let slot_duration = Duration::from_secs(SLOT_DURATION);
+        let slots_per_epoch = SLOTS_PER_EPOCH;
+        let sync_subnet_size = 2;
+        let target_aggregators = 14;
+
+        let messages_gen = Generator::builder()
+            .slot_clock(genesis_slot, genesis_duration, slot_duration)
+            .slots_per_epoch(slots_per_epoch)
+            .sync_subnet_size(sync_subnet_size)
+            .sync_committee_subnets(SYNC_SUBNETS)
+            .total_validators(params.total_validators() as u64)
+            .target_aggregators(target_aggregators)
+            .attestation_subnets(ATTESTATION_SUBNETS)
+            .build(validator_set)
+            .expect("need to adjust these params");
+
+        let start_time: DateTime<Utc> =
+            DateTime::parse_from_rfc3339(&client.run_parameters().test_start_time)
+                .expect("Correct time date format from testground")
+                .into();
+        let local_start_time = Instant::now();
+
+        Network {
+            swarm,
+            node_id,
+            instance_info,
+            participants,
+            client: Arc::new(client),
+            metrics_interval: interval(slot_duration / 3),
+            messages_gen,
+            start_time,
+            local_start_time,
+            registry,
+        }
+    }
+
+    async fn start_libp2p(&mut self) {
+        self.swarm
+            .listen_on(self.instance_info.multiaddr.clone())
+            .expect("Swarm starts listening");
+
+        match self.swarm.next().await.unwrap() {
+            SwarmEvent::NewListenAddr { address, .. } => {
+                assert_eq!(address, self.instance_info.multiaddr)
+            }
+            e => panic!("Unexpected event {:?}", e),
+        };
+    }
+
+    // Generates the necessary amount of information to record metrics.
+    fn record_metrics_info(&self) -> RecordMetricsInfo {
+        // Encode the metrics to an instance of the OpenMetrics protobuf format.
+        // https://github.com/OpenObservability/OpenMetrics/blob/main/proto/openmetrics_data_model.proto
+        let metrics = prometheus_client::encoding::proto::encode(&self.registry);
+
+        let elapsed = chrono::Duration::from_std(self.local_start_time.elapsed())
+            .expect("Durations are small");
+        let current = self.start_time + elapsed;
+
+        RecordMetricsInfo {
+            client: self.client.clone(),
+            metrics,
+            node_id: self.node_id,
+            instance_info: self.instance_info.clone(),
+            current,
+        }
+    }
+
+    pub async fn dial_peers(
+        &mut self,
+        outbound_peers: std::collections::BTreeMap<usize, Vec<usize>>,
+    ) {
+        let mut dialed_peers = 0;
+        if let Some(outbound_peers) = outbound_peers.get(&self.node_id) {
+            for peer_node_id in outbound_peers {
+                let InstanceInfo { peer_id, multiaddr } = self
+                    .participants
+                    .get(peer_node_id)
+                    .unwrap_or_else(|| {
+                        panic!("[{}] All outbound peers are participants of the network {peer_node_id} {:?}", self.node_id,self.participants.keys().collect::<Vec<_>>())
+                    })
+                    .clone();
+                info!(
+                    "[{}] dialing {} on {}",
+                    self.node_id, peer_node_id, multiaddr
+                );
+                if let Err(e) = self.swarm.dial(
+                    libp2p::swarm::dial_opts::DialOpts::peer_id(peer_id)
+                        .addresses(vec![multiaddr])
+                        .build(),
+                ) {
+                    panic!(
+                        "[{}] Dialing -> {} failed {}",
+                        self.node_id, peer_node_id, e
+                    );
+                }
+                dialed_peers += 1;
+            }
+        }
+        info!("[{}] dialed {} peers", self.node_id, dialed_peers);
+    }
+
+    async fn run_sim(&mut self, run_duration: Duration) {
+        let deadline = tokio::time::sleep(run_duration);
+        futures::pin_mut!(deadline);
+
+        loop {
+            tokio::select! {
+                _ = deadline.as_mut() => {
+                    // Sim complete
+                    break;
+                }
+                Some(m) = self.messages_gen.next() => {
+                    let payload = m.payload();
+                    let (topic, val) = match m {
+                        Message::BeaconBlock { proposer: ValId(v), slot: _ } => {
+                            (Topic::Blocks, v)
+
+                        },
+                        Message::AggregateAndProofAttestation { aggregator: ValId(v), subnet: Subnet(s), slot: _ } => {
+                            (Topic::Aggregates(s), v)
+                        },
+                        Message::Attestation { attester: ValId(v), subnet: Subnet(s), slot: _ } => {
+                            (Topic::Attestations(s), v)
+                        },
+                        Message::SignedContributionAndProof { validator: ValId(v), subnet: Subnet(s), slot: _ } => {
+                            (Topic::SignedContributionAndProof(s), v)
+                        },
+                        Message::SyncCommitteeMessage { validator: ValId(v), subnet: Subnet(s), slot: _ } => {
+                            (Topic::SyncMessages(s), v)
+                        },
+                    };
+                    if let Err(e) = self.publish(topic.clone(), val, &payload) {
+                        error!("Failed to publish message {e} to topic {topic:?}");
+                    }
+
+                }
+                // Record peer scores
+                _ = self.metrics_interval.tick() => {
+                    let metrics_info = self.record_metrics_info();
+                    // Spawn into its own task
+                    tokio::spawn(record_metrics(metrics_info));
+                }
+                event = self.swarm.select_next_some() => {
+                    match event {
+                        SwarmEvent::Behaviour(GossipsubEvent::Message { propagation_source,
+                    message_id: _,
+                    message,
+                        }
+                        ) => {
+                            let src_node = self.participants.iter().find(|(_k,v)| v.peer_id == propagation_source).map(|(k,_v)| k);
+                            if message.topic.as_str() == "\"Blocks\"" {
+                                    info!("[{}] Received block from: {:?}, size {}", self.node_id, src_node, message.data.len());
+                            }
+                        }
+                        _ =>  debug!("SwarmEvent: {:?}", event),
+                    }
+                }
+            }
+        }
+    }
+
+    fn publish(
+        &mut self,
+        topic: Topic,
+        validator: u64,
+        payload: &[u8],
+    ) -> Result<libp2p::gossipsub::MessageId, libp2p::gossipsub::error::PublishError> {
+        // simple tuples as messages
+        let msg =
+            serde_json::to_vec(&(validator, payload)).expect("json serialization never fails");
+        if let Topic::Blocks = topic {
+            info!(
+                "[{}] Publishing message topic: {}, size: {}",
+                self.node_id,
+                IdentTopic::from(topic.clone()),
+                msg.len()
+            );
+        }
+        let ident_topic: IdentTopic = topic.into();
+        self.swarm.behaviour_mut().publish(ident_topic, msg)
+    }
+
+    pub fn subscribe_topics(&mut self) -> Result<(), Box<dyn std::error::Error>> {
+        // blocks, attestations and aggregates, sync messages and aggregates
+        let blocks_topic: IdentTopic =
+            GossipTopic::new(serde_json::to_string(&Topic::Blocks).unwrap());
+        self.swarm.behaviour_mut().subscribe(&blocks_topic)?;
+        for subnet_n in 0..ATTESTATION_SUBNETS {
+            let attestation_subnet: IdentTopic = Topic::Attestations(subnet_n).into();
+            let aggregate_subnet: IdentTopic = Topic::Aggregates(subnet_n).into();
+            self.swarm.behaviour_mut().subscribe(&attestation_subnet)?;
+            self.swarm.behaviour_mut().subscribe(&aggregate_subnet)?;
+        }
+
+        for subnet_n in 0..SYNC_SUBNETS {
+            let sync_subnet: IdentTopic = Topic::SyncMessages(subnet_n).into();
+            let sync_aggregates: IdentTopic = Topic::SignedContributionAndProof(subnet_n).into();
+            self.swarm.behaviour_mut().subscribe(&sync_subnet)?;
+            self.swarm.behaviour_mut().subscribe(&sync_aggregates)?;
+        }
+        Ok(())
+    }
+}
+
+async fn record_metrics(info: RecordMetricsInfo) {
+    let run_id = &info.client.run_parameters().test_run;
+
+    // Encode the metrics to an instance of the OpenMetrics protobuf format.
+    // https://github.com/OpenObservability/OpenMetrics/blob/main/proto/openmetrics_data_model.proto
+    let metric_set = info.metrics;
+
+    let mut queries = vec![];
+    let current = info.current;
+    let node_id = info.node_id;
+
+    for family in metric_set.metric_families.iter() {
+        let q = match family.name.as_str() {
+            // ///////////////////////////////////
+            // Metrics per known topic
+            // ///////////////////////////////////
+            "topic_subscription_status" => queries_for_gauge(
+                &current,
+                family,
+                node_id,
+                &info.instance_info,
+                run_id,
+                "status",
+            ),
+            "topic_peers_counts" => queries_for_gauge(
+                &current,
+                family,
+                node_id,
+                &info.instance_info,
+                run_id,
+                "count",
+            ),
+            "invalid_messages_per_topic"
+            | "accepted_messages_per_topic"
+            | "ignored_messages_per_topic"
+            | "rejected_messages_per_topic" => {
+                queries_for_counter(&current, family, node_id, &info.instance_info, run_id)
+            }
+            // ///////////////////////////////////
+            // Metrics regarding mesh state
+            // ///////////////////////////////////
+            "mesh_peer_counts" => queries_for_gauge(
+                &current,
+                family,
+                info.node_id,
+                &info.instance_info,
+                run_id,
+                "count",
+            ),
+            "mesh_peer_inclusion_events" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            "mesh_peer_churn_events" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            // ///////////////////////////////////
+            // Metrics regarding messages sent/received
+            // ///////////////////////////////////
+            "topic_msg_sent_counts"
+            | "topic_msg_published"
+            | "topic_msg_sent_bytes"
+            | "topic_msg_recv_counts_unfiltered"
+            | "topic_msg_recv_counts"
+            | "topic_msg_recv_bytes" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            // ///////////////////////////////////
+            // Metrics related to scoring
+            // ///////////////////////////////////
+            "score_per_mesh" => {
+                queries_for_histogram(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            "scoring_penalties" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            // ///////////////////////////////////
+            // General Metrics
+            // ///////////////////////////////////
+            "peers_per_protocol" => queries_for_gauge(
+                &current,
+                family,
+                info.node_id,
+                &info.instance_info,
+                run_id,
+                "peers",
+            ),
+            "heartbeat_duration" => {
+                queries_for_histogram(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            // ///////////////////////////////////
+            // Performance metrics
+            // ///////////////////////////////////
+            "topic_iwant_msgs" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            "memcache_misses" => {
+                queries_for_counter(&current, family, info.node_id, &info.instance_info, run_id)
+            }
+            _ => unreachable!(),
+        };
+
+        queries.extend(q);
+    }
+
+    // We can't do joins in InfluxDB easily, so do some custom queries here to calculate
+    // duplicates.
+    let recvd_unfiltered = metric_set
+        .metric_families
+        .iter()
+        .find(|family| family.name.as_str() == "topic_msg_recv_counts_unfiltered");
+
+    if let Some(recvd_unfiltered) = recvd_unfiltered {
+        let recvd = metric_set
+            .metric_families
+            .iter()
+            .find(|family| family.name.as_str() == "topic_msg_recv_counts");
+        if let Some(recvd) = recvd {
+            let q = queries_for_counter_join(
+                &current,
+                recvd_unfiltered,
+                recvd,
+                "topic_msg_recv_duplicates",
+                info.node_id,
+                &info.instance_info,
+                run_id,
+                |a, b| a.saturating_sub(b),
+            );
+
+            queries.extend(q);
+        }
+    }
+
+    for query in queries {
+        if let Err(e) = info.client.record_metric(query).await {
+            error!("Failed to record metrics: {:?}", e);
+        }
+    }
+}

eth_consensus/simulation/src/utils.rs

@@ -0,0 +1,261 @@
+use crate::InstanceInfo;
+use chrono::{DateTime, Local, Utc};
+use libp2p::futures::StreamExt;
+use libp2p::PeerId;
+use prometheus_client::encoding::proto::openmetrics_data_model::counter_value;
+use prometheus_client::encoding::proto::openmetrics_data_model::gauge_value;
+use prometheus_client::encoding::proto::openmetrics_data_model::metric_point;
+use prometheus_client::encoding::proto::openmetrics_data_model::Metric;
+use prometheus_client::encoding::proto::openmetrics_data_model::MetricFamily;
+use prometheus_client::encoding::proto::HistogramValue;
+use serde::de::DeserializeOwned;
+use serde::Serialize;
+use std::borrow::Cow;
+use testground::client::Client;
+use testground::WriteQuery;
+
+// States for `barrier()`
+pub(crate) const BARRIER_LIBP2P_READY: &str = "Started libp2p";
+pub(crate) const BARRIER_TOPOLOGY_READY: &str = "Topology generated";
+
+// Tags for InfluxDB
+const TAG_INSTANCE_PEER_ID: &str = "instance_peer_id";
+const TAG_INSTANCE_NAME: &str = "instance_name";
+const TAG_RUN_ID: &str = "run_id";
+
+/// Publish info and collect it from the participants. The return value includes one published by
+/// myself.
+pub(crate) async fn publish_and_collect<T: Serialize + DeserializeOwned>(
+    topic: &'static str,
+    client: &Client,
+    info: T,
+) -> Result<Vec<T>, Box<dyn std::error::Error>> {
+    let instance_count = client.run_parameters().test_instance_count as usize;
+    let serialized = Cow::Owned(serde_json::to_value(&info)?);
+    client.publish(topic, serialized).await?;
+
+    let mut stream = client.subscribe(topic, instance_count * 2).await;
+
+    let mut vec: Vec<T> = Vec::with_capacity(instance_count);
+
+    for _ in 0..instance_count {
+        match stream.next().await {
+            Some(Ok(other)) => {
+                let info: T = serde_json::from_value(other)?;
+                vec.push(info);
+            }
+            Some(Err(e)) => return Err(Box::new(e)),
+            None => unreachable!(),
+        }
+    }
+
+    Ok(vec)
+}
+
+/// Create InfluxDB queries for Counter metrics.
+pub(crate) fn queries_for_counter(
+    datetime: &DateTime<Utc>,
+    family: &MetricFamily,
+    node_id: usize,
+    instance_info: &InstanceInfo,
+    run_id: &str,
+) -> Vec<WriteQuery> {
+    let mut queries = vec![];
+
+    for metric in family.metrics.iter() {
+        let mut query = WriteQuery::new((*datetime).into(), family.name.clone())
+            .add_tag(TAG_INSTANCE_PEER_ID, instance_info.peer_id.to_string())
+            .add_tag(TAG_INSTANCE_NAME, node_id.to_string())
+            .add_tag(TAG_RUN_ID, run_id.to_owned())
+            .add_field(
+                "count",
+                get_counter_value(metric).0.expect("should have int value"),
+            );
+
+        for l in &metric.labels {
+            query = query.add_tag(l.name.clone(), l.value.clone());
+        }
+
+        queries.push(query);
+    }
+
+    queries
+}
+
+/// Create InfluxDB queries joining counter metrics
+#[allow(clippy::too_many_arguments)]
+pub(crate) fn queries_for_counter_join(
+    datetime: &DateTime<Utc>,
+    family1: &MetricFamily,
+    family2: &MetricFamily,
+    name: &str,
+    node_id: usize,
+    instance_info: &InstanceInfo,
+    run_id: &str,
+    predicate: fn(u64, u64) -> u64,
+) -> Vec<WriteQuery> {
+    let mut queries = vec![];
+
+    for metric in family1.metrics.iter() {
+        // Match on metric values
+        let value = {
+            let current_val = get_counter_value(metric).0.expect("should have int value");
+            let other_val = family2
+                .metrics
+                .iter()
+                .find(|m2| {
+                    // match on all labels
+                    let mut found = true;
+                    for label in &metric.labels {
+                        if !m2
+                            .labels
+                            .iter()
+                            .any(|l| l.name == label.name && l.value == label.value)
+                        {
+                            found = false;
+                            break;
+                        }
+                    }
+                    found
+                })
+                .and_then(|m| get_counter_value(m).0);
+            other_val.map(|other| predicate(current_val, other))
+        };
+
+        if let Some(val) = value {
+            let mut query = WriteQuery::new((*datetime).into(), name)
+                .add_tag(TAG_INSTANCE_PEER_ID, instance_info.peer_id.to_string())
+                .add_tag(TAG_INSTANCE_NAME, node_id.to_string())
+                .add_tag(TAG_RUN_ID, run_id.to_owned())
+                .add_field("count", val);
+
+            for l in &metric.labels {
+                query = query.add_tag(l.name.clone(), l.value.clone());
+            }
+
+            queries.push(query);
+        }
+    }
+
+    queries
+}
+
+/// Create InfluxDB queries for Gauge metrics.
+pub(crate) fn queries_for_gauge(
+    datetime: &DateTime<Utc>,
+    family: &MetricFamily,
+    node_id: usize,
+    instance_info: &InstanceInfo,
+    run_id: &str,
+    field_name: &str,
+) -> Vec<WriteQuery> {
+    let mut queries = vec![];
+
+    for metric in family.metrics.iter() {
+        let mut query = WriteQuery::new((*datetime).into(), family.name.clone())
+            .add_tag(TAG_INSTANCE_PEER_ID, instance_info.peer_id.to_string())
+            .add_tag(TAG_INSTANCE_NAME, node_id.to_string())
+            .add_tag(TAG_RUN_ID, run_id.to_owned())
+            .add_field(
+                field_name,
+                get_gauge_value(metric).0.expect("should have int value"),
+            );
+
+        for l in &metric.labels {
+            query = query.add_tag(l.name.clone(), l.value.clone());
+        }
+
+        queries.push(query);
+    }
+
+    queries
+}
+
+/// Create InfluxDB queries for Histogram metrics.
+pub(crate) fn queries_for_histogram(
+    datetime: &DateTime<Utc>,
+    family: &MetricFamily,
+    node_id: usize,
+    instance_info: &InstanceInfo,
+    run_id: &str,
+) -> Vec<WriteQuery> {
+    let mut queries = vec![];
+
+    for metric in family.metrics.iter() {
+        let histogram = get_histogram_value(metric);
+        for bucket in histogram.buckets.iter() {
+            let mut query = WriteQuery::new((*datetime).into(), family.name.clone())
+                .add_tag(TAG_INSTANCE_PEER_ID, instance_info.peer_id.to_string())
+                .add_tag(TAG_INSTANCE_NAME, node_id.to_string())
+                .add_tag(TAG_RUN_ID, run_id.to_owned())
+                .add_field("count", bucket.count)
+                .add_field("upper_bound", bucket.upper_bound);
+
+            for l in &metric.labels {
+                query = query.add_tag(l.name.clone(), l.value.clone());
+            }
+            queries.push(query);
+        }
+    }
+
+    queries
+}
+
+fn get_gauge_value(metric: &Metric) -> (Option<i64>, Option<f64>) {
+    assert_eq!(1, metric.metric_points.len());
+
+    let metric_point = metric.metric_points.first().unwrap();
+    let metric_point_value = metric_point.value.as_ref().unwrap().clone();
+    match metric_point_value {
+        metric_point::Value::GaugeValue(gauge_value) => match gauge_value.value {
+            Some(gauge_value::Value::IntValue(i)) => (Some(i), None),
+            Some(gauge_value::Value::DoubleValue(f)) => (None, Some(f)),
+            _ => unreachable!(),
+        },
+        _ => unreachable!(),
+    }
+}
+
+pub(crate) fn get_counter_value(metric: &Metric) -> (Option<u64>, Option<f64>) {
+    assert_eq!(1, metric.metric_points.len());
+
+    let metric_point = metric.metric_points.first().unwrap();
+    let metric_point_value = metric_point.value.as_ref().unwrap().clone();
+    match metric_point_value {
+        metric_point::Value::CounterValue(counter_value) => match counter_value.total {
+            Some(counter_value::Total::IntValue(i)) => (Some(i), None),
+            Some(counter_value::Total::DoubleValue(f)) => (None, Some(f)),
+            _ => unreachable!(),
+        },
+        _ => unreachable!(),
+    }
+}
+
+fn get_histogram_value(metric: &Metric) -> HistogramValue {
+    assert_eq!(1, metric.metric_points.len());
+
+    let metric_point = metric.metric_points.first().unwrap();
+    let metric_point_value = metric_point.value.as_ref().unwrap().clone();
+    match metric_point_value {
+        metric_point::Value::HistogramValue(histogram_value) => histogram_value,
+        _ => unreachable!(),
+    }
+}
+
+/// Record an InstanceInfo to InfluxDB. This is useful on Grafana dashboard.
+pub(crate) async fn record_instance_info(
+    client: &Client,
+    node_id: usize,
+    peer_id: &PeerId,
+    run_id: &str,
+) -> Result<(), testground::errors::Error> {
+    let query = WriteQuery::new(Local::now().into(), "participants")
+        .add_tag(TAG_RUN_ID, run_id.to_owned())
+        // Add below as "field" not tag, because in InfluxQL, SELECT clause can't specify only tag.
+        // https://docs.influxdata.com/influxdb/v1.8/query_language/explore-data/#select-clause
+        // > The SELECT clause must specify at least one field when it includes a tag.
+        .add_field(TAG_INSTANCE_NAME, node_id.to_string())
+        .add_field(TAG_INSTANCE_PEER_ID, peer_id.to_string());
+
+    client.record_metric(query).await
+}

eth_consensus/utils/gen_topology/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "gen_topology"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+
+rand = "0.8.5"
+rand_chacha = "0.3.1"
+serde = { workspace = true, features = [ "derive" ]}

eth_consensus/utils/gen_topology/src/lib.rs

@@ -0,0 +1,280 @@
+use std::collections::{BTreeMap, BTreeSet, HashSet};
+use std::ops::RangeInclusive;
+
+use rand::seq::SliceRandom;
+use rand::Rng;
+use rand::SeedableRng;
+use rand_chacha::ChaCha8Rng;
+use serde::{Deserialize, Serialize};
+
+pub type NodeId = usize;
+pub type ValId = usize;
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Params {
+    seed: u64,
+    total_validators: usize,
+    total_nodes_with_vals: usize,
+    total_nodes: usize,
+    connections_range: RangeInclusive<usize>,
+}
+
+impl Params {
+    pub fn new(
+        seed: u64,
+        total_validators: usize,
+        total_nodes_with_vals: usize,
+        total_nodes_without_vals: usize,
+        min_peers_per_node: usize,
+        max_peers_per_node_inclusive: usize,
+    ) -> Result<Self, &'static str> {
+        let total_nodes = total_nodes_with_vals + total_nodes_without_vals;
+        if total_nodes_with_vals > total_nodes {
+            return Err("bad number of nodes with validators");
+        }
+
+        if total_nodes == 0 {
+            return Err("Empty network");
+        }
+
+        if total_validators == 0 {
+            return Err("no validators in the network");
+        }
+
+        let connections_range = min_peers_per_node..=max_peers_per_node_inclusive;
+        if connections_range.is_empty() {
+            return Err("bad connection range");
+        }
+
+        Ok(Self {
+            seed,
+            total_validators,
+            total_nodes_with_vals,
+            total_nodes,
+            connections_range,
+        })
+    }
+    pub fn seed(&self) -> u64 {
+        self.seed
+    }
+
+    pub fn total_validators(&self) -> usize {
+        self.total_validators
+    }
+
+    pub fn total_nodes_with_vals(&self) -> usize {
+        self.total_nodes_with_vals
+    }
+
+    pub fn total_nodes(&self) -> usize {
+        self.total_nodes
+    }
+
+    pub fn connections_range(&self) -> std::ops::RangeInclusive<usize> {
+        self.connections_range.clone()
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Network {
+    /// Params used to generate this network configuration. Stored to allow reproduction.
+    params: Params,
+    /// Validators managed by each node.
+    validator_assignments: BTreeMap<NodeId, BTreeSet<ValId>>,
+    /// Peers to connect to for each node.
+    outbound_peers: BTreeMap<NodeId, Vec<NodeId>>,
+}
+
+impl Network {
+    fn new(
+        params: Params,
+        validator_assignments: BTreeMap<NodeId, BTreeSet<ValId>>,
+        outbound_peers: BTreeMap<NodeId, Vec<NodeId>>,
+    ) -> Result<Self, String> {
+        let total_vals: usize = validator_assignments
+            .values()
+            .map(|validator_list| validator_list.len())
+            .sum();
+
+        //
+        // validator assignment checks
+        //
+
+        // first check that under possibility of repetition the number of validators is right
+        if total_vals != params.total_validators {
+            return Err(format!("the number of assigned validators does not match the expected number. Found {}, expected {}", total_vals, params.total_validators));
+        }
+
+        let assigned_vals: HashSet<&ValId> = validator_assignments
+            .values()
+            .flat_map(|validator_list| validator_list.iter())
+            .collect();
+        if assigned_vals.len() != total_vals {
+            return Err("a validator id was assigned more than once".to_string());
+        }
+
+        if assigned_vals.iter().max().expect("total_validators > 0")
+            != &&(params.total_validators - 1)
+        {
+            return Err("validator ids do not cover the expected range (wrong max)".to_string());
+        }
+
+        if assigned_vals.iter().min().expect("total_validators > 0") != &&0 {
+            return Err("validator ids do not cover the expected range (wrong min)".to_string());
+        }
+
+        //
+        // topology checks
+        //
+
+        let connected_peers: HashSet<NodeId> = outbound_peers
+            .iter()
+            .flat_map(|(peer_a, dialed_peers)| dialed_peers.iter().chain(Some(peer_a)))
+            .cloned()
+            .collect();
+        let expected_peers: HashSet<usize> = (0..params.total_nodes).collect();
+        if connected_peers != expected_peers {
+            return Err(format!(
+                "set of dialed peers and expected peers differ: missing {:?}",
+                expected_peers.difference(&connected_peers)
+            ));
+        }
+
+        println!("Connectedness should be checked with an external tool!");
+        Ok(Self {
+            params,
+            validator_assignments,
+            outbound_peers,
+        })
+    }
+
+    pub fn generate(params: Params) -> Result<Self, String> {
+        // Use a deterministic pseudo random number generator
+        let mut gen = ChaCha8Rng::seed_from_u64(params.seed);
+
+        let validator_assignments = {
+            // Assing validators to each node that has any validator at all
+            let mut all_validators = (0..params.total_validators).collect::<Vec<_>>();
+            let mut cuts: Vec<_> = all_validators
+                .choose_multiple(&mut gen, params.total_nodes_with_vals - 1)
+                .cloned()
+                .collect();
+            cuts.push(params.total_validators);
+            cuts.push(0);
+            all_validators.shuffle(&mut gen);
+            cuts.sort();
+
+            let validator_assignments: BTreeMap<NodeId, BTreeSet<ValId>> = cuts
+                .windows(2)
+                .enumerate()
+                .map(|(node_id, current_cut)| {
+                    // NOTE: this means the nodes that have validators are the first
+                    // `params.total_nodes_with_vals`. Since the node_id is an abstract construct not
+                    // used anywhere I don't think it's worth randomizing this part
+                    let start = current_cut[0];
+                    let end = current_cut[1];
+                    let assigned_vals: BTreeSet<ValId> =
+                        all_validators[start..end].iter().cloned().collect();
+                    (node_id, assigned_vals)
+                })
+                .collect();
+
+            validator_assignments
+        };
+
+        let outbound_peers = {
+            let mut outbound_peers: BTreeMap<NodeId, Vec<NodeId>> = BTreeMap::default();
+
+            // First build the set of all possible connections (a,b) ignoring connection direction
+            let mut all_connections: Vec<(usize, usize)> = (0..params.total_nodes)
+                .flat_map(|i| (i + 1..params.total_nodes).map(move |j| (i, j)))
+                .collect();
+
+            // Keep track of all connections (inbound and outbound) per peer.
+            // BTreeSet is useful for debugging with consistent order.
+            type IsOutbound = bool;
+            let mut topology = BTreeMap::<NodeId, (usize, BTreeMap<NodeId, IsOutbound>)>::default();
+
+            let connections_range = params.connections_range();
+
+            // for each node_id, generate a random expected number of connections within the given
+            // range
+            for p in 0..params.total_nodes {
+                // decide how many connections should the node have.
+                let num_peers = gen.gen_range(connections_range.clone());
+                // store the expected number of connections and a default map to keep track of the
+                // added connections.
+                topology.insert(p, (num_peers, BTreeMap::default()));
+            }
+
+            // Pick a random connection and add it if it's useful.
+            all_connections.shuffle(&mut gen);
+            while let Some((a, b)) = all_connections.pop() {
+                let (expected, current) = topology.get(&a).unwrap();
+                if current.len() >= *expected {
+                    continue;
+                }
+
+                let (expected, current) = topology.get(&b).unwrap();
+                if current.len() >= *expected {
+                    continue;
+                }
+
+                let from_a_to_b = gen.gen_ratio(3, 5);
+
+                topology.get_mut(&a).unwrap().1.insert(b, from_a_to_b);
+                topology.get_mut(&b).unwrap().1.insert(a, !from_a_to_b);
+
+                if from_a_to_b {
+                    outbound_peers.entry(a).or_default().push(b);
+                } else {
+                    outbound_peers.entry(b).or_default().push(a);
+                }
+            }
+
+            if topology
+                .values()
+                .any(|(_expected_connections, connections)| {
+                    !connections_range.contains(&connections.len())
+                })
+            {
+                // The _expected_connections number might not be reached for a few nodes. We really
+                // care about the number of connections being withing the set range. I haven't seen
+                // this happen so far.
+                eprintln!("Some nodes didn't reach the expected number of connections");
+            }
+            outbound_peers
+        };
+
+        Network::new(params, validator_assignments, outbound_peers)
+            .map_err(|e| format!("Network generation failed: {e}"))
+    }
+
+    pub fn outbound_peers(&self) -> &BTreeMap<NodeId, Vec<NodeId>> {
+        &self.outbound_peers
+    }
+
+    pub fn validator_assignments(&self) -> &BTreeMap<NodeId, BTreeSet<ValId>> {
+        &self.validator_assignments
+    }
+
+    pub fn params(&self) -> &Params {
+        &self.params
+    }
+
+    #[allow(clippy::type_complexity)]
+    pub fn destructure(
+        self,
+    ) -> (
+        Params,
+        BTreeMap<NodeId, Vec<NodeId>>,
+        BTreeMap<NodeId, BTreeSet<ValId>>,
+    ) {
+        let Network {
+            params,
+            validator_assignments,
+            outbound_peers,
+        } = self;
+        (params, outbound_peers, validator_assignments)
+    }
+}

eth_consensus/utils/gen_topology_files/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "gen_topology_files"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gen_topology = { path = "../gen_topology" }
+clap = { version = "4.0.10", features = ["derive"] }
+serde_json.workspace = true

eth_consensus/utils/gen_topology_files/src/main.rs

@@ -0,0 +1,65 @@
+use clap::Parser;
+extern crate gen_topology;
+use std::io::Write;
+
+#[derive(Parser)]
+pub struct RunParams {
+    seed: u64,
+    total_validators: usize,
+    total_nodes_with_vals: usize,
+    total_nodes: usize,
+    min_peers_per_node: usize,
+    max_peers_per_node_inc: usize,
+    dotfile_name: String,
+    config_file_name: String,
+}
+
+fn main() {
+    if let Err(e) = gen_and_save() {
+        eprintln!("{}", e);
+        std::process::exit(1)
+    }
+}
+
+fn gen_and_save() -> Result<(), String> {
+    let RunParams {
+        seed,
+        total_validators,
+        total_nodes_with_vals,
+        total_nodes,
+        min_peers_per_node,
+        max_peers_per_node_inc,
+        dotfile_name,
+        config_file_name,
+    } = RunParams::parse();
+    let params = gen_topology::Params::new(
+        seed,
+        total_validators,
+        total_nodes_with_vals,
+        total_nodes,
+        min_peers_per_node,
+        max_peers_per_node_inc,
+    )?;
+    let network = gen_topology::Network::generate(params)?;
+
+    // gen the dotfile
+    let mut file =
+        std::fs::File::create(dotfile_name).map_err(|e| format!("Failed to create dotfile {e}"))?;
+    writeln!(file, "digraph {{").map_err(|e| format!("Failed writing dotfile {e}"))?;
+    for (peer_a, dialed_peers) in network.outbound_peers() {
+        for peer_b in dialed_peers {
+            writeln!(file, "\t{peer_a} -> {peer_b};")
+                .map_err(|e| format!("Failed writing dotfile {e}"))?;
+        }
+    }
+    writeln!(file, "}}").map_err(|e| format!("Failed writing dotfile {e}"))?;
+
+    // gen the config file
+    let mut file = std::fs::File::create(config_file_name)
+        .map_err(|e| format!("Failed creating network file {e}"))?;
+    let network_rep = serde_json::to_string(&network)
+        .map_err(|e| format!("Failed to create network file {e}"))?;
+    write!(file, "{}", network_rep).map_err(|e| format!("Failed to write network file {e}"))?;
+
+    Ok(())
+}

grafana/dashboards.yml

@@ -13,4 +13,9 @@ providers:
    type: file
    options:
      path: /var/lib/grafana/dashboards/censoring/PeerScores.json
-
+ - name: 'Basic Gossipsub'
+   orgId: 1
+   folder: 'Eth Consensus'
+   type: file
+   options:
+     path: /var/lib/grafana/dashboards/eth_consensus/BasicGossipsub.json

scripts/clear_db.sh

@@ -0,0 +1,6 @@
+#! /bin/sh
+# This script is used to drop and re-create the InfluxDB docker container,
+# removing all past testground runs.
+
+docker rm -f testground-influxdb
+testground healthcheck --runner local:docker --fix

smoke/Dockerfile

@@ -1,6 +1,6 @@
 # This Dockerfile is for the `docker:generic` builder.
 # See https://docs.testground.ai/builder-library/docker-generic for details about the builder.
-FROM rust:1.62-bullseye as builder
+FROM rust:1.64-bullseye as builder
 WORKDIR /usr/src/test-plan
 
 # * `prost-build`, a dependency of `libp2p-gossipsub`, requires cmake.
@@ -16,6 +16,7 @@ RUN apt-get update && apt-get install -y cmake && apt-get install -y protobuf-co
 RUN mkdir -p ./plan/src/
 # This is a placeholder main function to build only the dependencies.
 RUN echo "fn main() { println!(\"If you see this message, you may want to clean up the target directory or the Docker build cache.\") }" > ./plan/src/main.rs
+
 COPY ./plan/Cargo.toml ./plan/
 RUN cd ./plan/ && cargo build --release
 
@@ -37,4 +38,4 @@ COPY --from=builder /usr/src/test-plan/plan/target/release/smoke /usr/local/bin/
 # Configure Logging
 # ENV RUST_LOG=libp2p_gossipsub=debug
 
-ENTRYPOINT ["smoke"]
+ENTRYPOINT ["smoke"]

smoke/manifest.toml

@@ -14,5 +14,5 @@ enabled = true
 name = "smoke"
 instances = { min = 2, max = 100, default = 2 }
 
-  [testcases.params]
+[testcases.params]
-  gossipsub_history_length = { type = "int", desc = "Number of heartbeats to keep in the `memcache`", default = 5 }
+gossipsub_history_length = { type = "int", desc = "Number of heartbeats to keep in the `memcache`", default = 5 }