Network funnel - work in progress

Step 1 of the network funnel

* network.json reader now tags throughput entries with their tree
  location and parents to whom data should be applied.
* Data flows "up the tree", giving totals all the way up.
* Simple network map page for displaying the data while it's worked
  on.

src/rust/Cargo.lock

@@ -1334,6 +1334,7 @@ dependencies = [
  "ip_network_table",
  "log",
  "serde",
+ "serde_json",
  "sha2",
  "thiserror",
  "toml 0.7.2",

src/rust/lqos_bus/src/bus/request.rs

@@ -111,6 +111,12 @@ pub enum BusRequest {
   /// Request that the Rust side of things validate the CSV
   ValidateShapedDevicesCsv,
 
+  /// Request details of part of the network tree
+  GetNetworkMap{
+    /// The parent of the map to retrieve
+    parent: usize
+  },
+
   /// If running on Equinix (the `equinix_test` feature is enabled),
   /// display a "run bandwidht test" link.
   #[cfg(feature = "equinix_tests")]

src/rust/lqos_bus/src/bus/response.rs

@@ -68,4 +68,7 @@ pub enum BusResponse {
   /// A string containing a JSON dump of a queue stats. Analagos to
   /// the response from `tc show qdisc`.
   RawQueueData(String),
+
+  /// Results from network map queries
+  NetworkMap(Vec<(usize, lqos_config::NetworkJsonNode)>),
 }

src/rust/lqos_config/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 thiserror = "1"
 toml = "0"
 serde = { version = "1.0", features = [ "derive" ] }
+serde_json = "1"
 csv = "1"
 ip_network_table = "0"
 ip_network = "0"

src/rust/lqos_config/src/lib.rs

@@ -11,12 +11,14 @@ mod etc;
 mod libre_qos_config;
 mod program_control;
 mod shaped_devices;
+mod network_json;
 
 pub use authentication::{UserRole, WebUsers};
 pub use etc::{BridgeConfig, BridgeInterface, BridgeVlan, EtcLqos, Tunables};
 pub use libre_qos_config::LibreQoSConfig;
 pub use program_control::load_libreqos;
 pub use shaped_devices::{ConfigShapedDevices, ShapedDevice};
+pub use network_json::{NetworkJson, NetworkJsonNode};
 
 /// Used as a constant in determining buffer preallocation
 pub const SUPPORTED_CUSTOMERS: usize = 16_000_000;

src/rust/lqos_config/src/network_json/mod.rs

@@ -0,0 +1,230 @@
+use crate::etc;
+use log::{error, info, warn};
+use serde::{Deserialize, Serialize};
+use serde_json::{Map, Value};
+use std::{
+  fs,
+  path::{Path, PathBuf},
+};
+use thiserror::Error;
+
+/// Describes a node in the network map tree.
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct NetworkJsonNode {
+  /// The node name, as it appears in `network.json`
+  pub name: String,
+
+  /// The maximum throughput allowed per `network.json` for this node
+  pub max_throughput: (u32, u32), // In mbps
+
+  /// Current throughput (in bytes/second) at this node
+  pub current_throughput: (u64, u64), // In bytes
+
+  /// Approximate RTTs reported for this level of the tree.
+  /// It's never going to be as statistically accurate as the actual
+  /// numbers, being based on medians.
+  pub rtts: Vec<f32>,
+
+  /// A list of indices in the `NetworkJson` vector of nodes
+  /// linking to parent nodes
+  pub parents: Vec<usize>,
+
+  /// The immediate parent node
+  pub immediate_parent: Option<usize>,
+}
+
+/// Holder for the network.json representation.
+/// This is condensed into a single level vector with index-based referencing
+/// for easy use in funnel calculations.
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct NetworkJson {
+  nodes: Vec<NetworkJsonNode>,
+}
+
+impl Default for NetworkJson {
+  fn default() -> Self {
+    Self::new()
+  }
+}
+
+impl NetworkJson {
+  /// Generates an empty network.json
+  pub fn new() -> Self {
+    Self { nodes: Vec::new() }
+  }
+
+  /// The path to the current `network.json` file, determined
+  /// by acquiring the prefix from the `/etc/lqos.conf` configuration
+  /// file.
+  pub fn path() -> Result<PathBuf, NetworkJsonError> {
+    let cfg =
+      etc::EtcLqos::load().map_err(|_| NetworkJsonError::ConfigLoadError)?;
+    let base_path = Path::new(&cfg.lqos_directory);
+    Ok(base_path.join("network.json"))
+  }
+
+  /// Does network.json exist?
+  pub fn exists() -> bool {
+    if let Ok(path) = Self::path() {
+      path.exists()
+    } else {
+      false
+    }
+  }
+
+  /// Attempt to load network.json from disk
+  pub fn load() -> Result<Self, NetworkJsonError> {
+    let mut nodes = vec![NetworkJsonNode {
+      name: "Root".to_string(),
+      max_throughput: (0, 0),
+      current_throughput: (0, 0),
+      parents: Vec::new(),
+      immediate_parent: None,
+      rtts: Vec::new(),
+    }];
+    if !Self::exists() {
+      return Err(NetworkJsonError::FileNotFound);
+    }
+    let path = Self::path()?;
+    let raw = fs::read_to_string(path)
+      .map_err(|_| NetworkJsonError::ConfigLoadError)?;
+    let json: Value = serde_json::from_str(&raw)
+      .map_err(|_| NetworkJsonError::ConfigLoadError)?;
+
+    // Start reading from the top. We are at the root node.
+    let parents = vec![0];
+    if let Value::Object(map) = &json {
+      for (key, value) in map.iter() {
+        if let Value::Object(inner_map) = value {
+          recurse_node(&mut nodes, key, inner_map, &parents, 0);
+        }
+      }
+    }
+
+    Ok(Self { nodes })
+  }
+
+  /// Find the index of a circuit_id
+  pub fn get_index_for_name(&self, name: &str) -> Option<usize> {
+    self.nodes.iter().position(|n| n.name == name)
+  }
+
+  /// Retrieve a cloned copy of a NetworkJsonNode entry, or None if there isn't
+  /// an entry at that index.
+  pub fn get_cloned_entry_by_index(
+    &self,
+    index: usize,
+  ) -> Option<NetworkJsonNode> {
+    self.nodes.get(index).cloned()
+  }
+
+  /// Retrieve a cloned copy of all children with a parent containing a specific
+  /// node index.
+  pub fn get_cloned_children(&self, index: usize) -> Vec<(usize, NetworkJsonNode)> {
+    self
+      .nodes
+      .iter()
+      .enumerate()
+      .filter(|(_i,n)| n.immediate_parent == Some(index))
+      .map(|(i, n)| (i, n.clone()))
+      .collect()
+  }
+
+  /// Find a circuit_id, and if it exists return its list of parent nodes
+  /// as indices within the network_json layout.
+  pub fn get_parents_for_circuit_id(
+    &self,
+    circuit_id: &str,
+  ) -> Option<Vec<usize>> {
+    self
+      .nodes
+      .iter()
+      .find(|n| n.name == circuit_id)
+      .map(|node| node.parents.clone())
+  }
+
+  /// Sets all current throughput values to zero
+  pub fn zero_throughput_and_rtt(&mut self) {
+    self.nodes.iter_mut().for_each(|n| {
+      n.current_throughput = (0, 0);
+      n.rtts.clear();
+    });
+  }
+
+  /// Add throughput numbers to node entries
+  pub fn add_throughput_cycle(
+    &mut self,
+    targets: &[usize],
+    bytes: (u64, u64),
+    median_rtt: f32,
+  ) {
+    for idx in targets {
+      // Safety first: use "get" to ensure that the node exists
+      if let Some(node) = self.nodes.get_mut(*idx) {
+        node.current_throughput.0 += bytes.0;
+        node.current_throughput.1 += bytes.1;
+        if median_rtt > 0.0 {
+          node.rtts.push(median_rtt);
+        }
+      } else {
+        warn!("No network tree entry for index {idx}");
+      }
+    }
+  }
+}
+
+fn json_to_u32(val: Option<&Value>) -> u32 {
+  if let Some(val) = val {
+    if let Some(n) = val.as_u64() {
+      n as u32
+    } else {
+      0
+    }
+  } else {
+    0
+  }
+}
+
+fn recurse_node(
+  nodes: &mut Vec<NetworkJsonNode>,
+  name: &str,
+  json: &Map<String, Value>,
+  parents: &[usize],
+  immediate_parent: usize,
+) {
+  info!("Mapping {name} from network.json");
+  let node = NetworkJsonNode {
+    parents: parents.to_vec(),
+    max_throughput: (
+      json_to_u32(json.get("downloadBandwidthMbps")),
+      json_to_u32(json.get("uploadBandwidthMbps")),
+    ),
+    current_throughput: (0, 0),
+    name: name.to_string(),
+    immediate_parent: Some(immediate_parent),
+    rtts: Vec::new(),
+  };
+
+  let my_id = nodes.len();
+  nodes.push(node);
+  let mut parents = parents.to_vec();
+  parents.push(my_id);
+
+  // Recurse children
+  for (key, value) in json.iter() {
+    let key_str = key.as_str();
+    if key_str != "uploadBandwidthMbps" && key_str != "downloadBandwidthMbps" {
+      if let Value::Object(value) = value {
+        recurse_node(nodes, key, value, &parents, my_id);
+      }
+    }
+  }
+}
+
+#[derive(Error, Debug)]
+pub enum NetworkJsonError {
+  #[error("Unable to find or load network.json")]
+  ConfigLoadError,
+  #[error("network.json not found or does not exist")]
+  FileNotFound,
+}

src/rust/lqos_node_manager/src/main.rs

@@ -10,6 +10,7 @@ use rocket_async_compression::Compression;
 mod auth_guard;
 mod config_control;
 mod queue_info;
+mod network_tree;
 
 // Use JemAllocator only on supported platforms
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
@@ -38,6 +39,7 @@ fn rocket() -> _ {
         static_pages::unknown_devices_page,
         static_pages::circuit_queue,
         config_control::config_page,
+        network_tree::tree_page,
         // Our JS library
         static_pages::lqos_js,
         static_pages::lqos_css,
@@ -77,6 +79,7 @@ fn rocket() -> _ {
         auth_guard::admin_check,
         static_pages::login_page,
         auth_guard::username,
+        network_tree::tree_entry,
         // Supporting files
         static_pages::bootsrap_css,
         static_pages::plotly_js,

src/rust/lqos_node_manager/src/network_tree.rs

@@ -0,0 +1,26 @@
+use lqos_bus::{bus_request, BusRequest, BusResponse};
+use lqos_config::NetworkJsonNode;
+use rocket::{fs::NamedFile, serde::json::Json};
+
+use crate::cache_control::NoCache;
+
+// Note that NoCache can be replaced with a cache option
+// once the design work is complete.
+#[get("/tree")]
+pub async fn tree_page<'a>() -> NoCache<Option<NamedFile>> {
+  NoCache::new(NamedFile::open("static/tree.html").await.ok())
+}
+
+#[get("/api/network_tree/<parent>")]
+pub async fn tree_entry(
+  parent: usize,
+) -> NoCache<Json<Vec<(usize, NetworkJsonNode)>>> {
+  let responses =
+    bus_request(vec![BusRequest::GetNetworkMap { parent }]).await.unwrap();
+  let result = match &responses[0] {
+    BusResponse::NetworkMap(nodes) => nodes.to_owned(),
+    _ => Vec::new(),
+  };
+
+  NoCache::new(Json(result))
+}

src/rust/lqos_node_manager/static/main.html

@@ -26,9 +26,9 @@
                         <a class="nav-link active" aria-current="page" href="/"><i class="fa fa-home"></i> Dashboard</a>
                     </li>
                     <li class="nav-item" id="currentLogin"></li>
-                    <!--<li class="nav-item">
-                        <a class="nav-link" href="#"><i class="fa fa-globe"></i> Network Layout</a>
-                    </li>-->
+                    <li class="nav-item">
+                        <a class="nav-link" href="/tree?parent=0"><i class="fa fa-globe"></i> Network Layout</a>
+                    </li>
                     <li class="nav-item">
                         <a class="nav-link" href="/shaped"><i class="fa fa-users"></i> Shaped Devices <span id="shapedCount" class="badge badge-pill badge-success green-badge">?</span></a>
                     </li>

src/rust/lqos_node_manager/static/tree.html

@@ -0,0 +1,129 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link href="/vendor/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="/vendor/solid.min.css">
+    <link rel="stylesheet" href="/lqos.css">
+    <title>LibreQoS - Local Node Manager</title>
+    <script src="/lqos.js"></script>
+    <script src="/vendor/plotly-2.16.1.min.js"></script>
+    <script src="/vendor/jquery.min.js"></script>
+    <script defer src="/vendor/bootstrap.bundle.min.js"></script>
+</head>
+<body class="bg-secondary">
+    <!-- Navigation -->
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+        <div class="container-fluid">
+            <a class="navbar-brand" href="/"><img src="/vendor/tinylogo.svg" alt="LibreQoS SVG Logo" width="25" height="25" />&nbsp;LibreQoS</a>
+            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <div class="collapse navbar-collapse" id="navbarSupportedContent">
+                <ul class="navbar-nav me-auto mb-2 mb-lg-0">
+                    <li class="nav-item">
+                        <a class="nav-link active" aria-current="page" href="/"><i class="fa fa-home"></i> Dashboard</a>
+                    </li>
+                    <li class="nav-item" id="currentLogin"></li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/tree?parent=0"><i class="fa fa-globe"></i> Network Layout</a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/shaped"><i class="fa fa-users"></i> Shaped Devices <span id="shapedCount" class="badge badge-pill badge-success green-badge">?</span></a>
+                    </li>
+                    <li class="nav-item">
+                        <a class="nav-link" href="/unknown"><i class="fa fa-address-card"></i> Unknown IPs <span id="unshapedCount" class="badge badge-warning orange-badge">?</span></a>
+                    </li>
+                </ul>
+            </div>
+
+            <ul class="navbar-nav ms-auto">
+                <li class="nav-item">
+                    <a class="nav-link" href="#" id="startTest"><i class="fa fa-flag-checkered"></i> Run Bandwidth Test</a>
+                </li>
+                <li class="nav-item ms-auto">
+                    <a class="nav-link" href="/config"><i class="fa fa-gear"></i> Configuration</a>
+                </li>
+                <li>
+                    <a class="nav-link btn btn-small" href="#" id="btnReload"><i class="fa fa-refresh"></i> Reload LibreQoS</a>
+                </li>
+            </ul>
+        </div>
+    </nav>
+
+    <div id="container" class="pad4">
+
+        <div class="row top-shunt">
+            <div class="col-sm-12 bg-light center-txt">
+                THIS NODE
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-sm-12 bg-light center-txt">
+                <div id="treeList"></div>
+            </div>
+        </div>
+
+    </div>
+
+    <footer>&copy; 2022-2023, LibreQoE LLC</footer>
+
+    <script>
+        let node = 0;
+
+        function getTree() {
+            $.get("/api/network_tree/" + node, (data) => {
+                //console.log(data);
+
+                let tbl = "<table class='table'>";
+                tbl += "<thead><th>Circuit</th><th>Limit</th><th>Download</th><th>Upload</th><th>RTT Latency</th></thead>";
+                for (let i=1; i<data.length; ++i) {
+                    tbl += "<tr>";
+                    tbl += "<td style='width: 20%'><a href='/tree?parent=" + encodeURI(data[i][0]) + "'>" + data[i][1].name + "</a></td>";
+                    if (data[i][1].max_throughput[0]==0 && data[i][1].max_throughput[1] == 0) {
+                        tbl += "<td>No Limit</td>";
+                    } else {
+                        let down = scaleNumber(data[i][1].max_throughput[0] * 1000000);
+                        let up = scaleNumber(data[i][1].max_throughput[1] * 1000000);
+                        tbl += "<td>" + down + " / " + up + "</td>";
+                    }
+                    let down = scaleNumber(data[i][1].current_throughput[0] * 8);
+                    let up = scaleNumber(data[i][1].current_throughput[1] * 8);
+                    tbl += "<td>" + down + "</td>";
+                    tbl += "<td>" + up + "</td>";
+                    let rtt = "-";
+                    if (data[i][1].rtts.length > 0) {
+                        let sum = 0;
+                        for (let j=0; j<data[i][1].rtts.length; ++j) {
+                            sum += data[i][1].rtts[j];
+                        }
+                        sum /= data[i][1].rtts.length;
+                        rtt = sum.toFixed(2) + " ms";
+                    }
+                    tbl += "<td>" + rtt + "</td>";
+                    tbl += "</tr>";
+                }
+                tbl += "</table>";
+                $("#treeList").html(tbl);
+            });
+            setTimeout(getTree, 1000);
+        }
+
+        function start() {
+            colorReloadButton();
+            updateHostCounts();
+            getTree();
+        }
+
+        const params = new Proxy(new URLSearchParams(window.location.search), {
+            get: (searchParams, prop) => searchParams.get(prop),
+        });
+        node = params.parent;
+
+        $(document).ready(start);
+    </script>
+
+</body>
+</html>

src/rust/lqosd/src/main.rs

@@ -3,8 +3,8 @@ mod ip_mapping;
 #[cfg(feature = "equinix_tests")]
 mod lqos_daht_test;
 mod program_control;
-mod throughput_tracker;
 mod shaped_devices_tracker;
+mod throughput_tracker;
 mod tuning;
 mod validation;
 use crate::{
@@ -64,7 +64,11 @@ async fn main() -> Result<()> {
   };
 
   // Spawn tracking sub-systems
-  join!(spawn_queue_structure_monitor(), shaped_devices_tracker::shaped_devices_watcher());
+  join!(
+    spawn_queue_structure_monitor(),
+    shaped_devices_tracker::shaped_devices_watcher(),
+    shaped_devices_tracker::network_json_watcher()
+  );
   throughput_tracker::spawn_throughput_monitor();
   spawn_queue_monitor();
 
@@ -156,7 +160,10 @@ fn handle_bus_requests(
       BusRequest::RequestLqosEquinixTest => lqos_daht_test::lqos_daht_test(),
       BusRequest::ValidateShapedDevicesCsv => {
         validation::validate_shaped_devices_csv()
-      }
+      },
+      BusRequest::GetNetworkMap { parent } => {
+        shaped_devices_tracker::get_one_network_map_layer(*parent)
+      },
     });
   }
 }

src/rust/lqosd/src/shaped_devices_tracker/mod.rs

@@ -1,10 +1,13 @@
 use anyhow::Result;
 use log::{error, info, warn};
+use lqos_bus::BusResponse;
 use lqos_config::ConfigShapedDevices;
 use lqos_utils::file_watcher::FileWatcher;
 use once_cell::sync::Lazy;
 use parking_lot::RwLock;
 use tokio::task::spawn_blocking;
+mod netjson;
+pub use netjson::*;
 
 pub static SHAPED_DEVICES: Lazy<RwLock<ConfigShapedDevices>> =
   Lazy::new(|| RwLock::new(ConfigShapedDevices::default()));
@@ -50,3 +53,14 @@ fn watch_for_shaped_devices_changing() -> Result<()> {
     info!("ShapedDevices watcher returned: {result:?}");
   }
 }
+
+pub fn get_one_network_map_layer(parent_idx: usize) -> BusResponse {
+  let net_json = NETWORK_JSON.read();
+  if let Some(parent) = net_json.get_cloned_entry_by_index(parent_idx) {
+    let mut nodes = vec![(parent_idx, parent)];
+    nodes.extend_from_slice(&net_json.get_cloned_children(parent_idx));
+    BusResponse::NetworkMap(nodes)
+  } else {
+    BusResponse::Fail("No such node".to_string())
+  }
+}

src/rust/lqosd/src/shaped_devices_tracker/netjson.rs

@@ -0,0 +1,47 @@
+use log::{info, error, warn};
+use lqos_config::NetworkJson;
+use lqos_utils::file_watcher::FileWatcher;
+use once_cell::sync::Lazy;
+use parking_lot::RwLock;
+use tokio::task::spawn_blocking;
+use anyhow::Result;
+
+pub static NETWORK_JSON: Lazy<RwLock<NetworkJson>> = Lazy::new(|| RwLock::new(NetworkJson::default()));
+
+pub async fn network_json_watcher() {
+  spawn_blocking(|| {
+    info!("Watching for network.kson changes");
+    let _ = watch_for_network_json_changing();
+  });
+}
+
+/// Fires up a Linux file system watcher than notifies
+/// when `network.json` changes, and triggers a reload.
+fn watch_for_network_json_changing() -> Result<()> {
+    let watch_path = NetworkJson::path();
+    if watch_path.is_err() {
+      error!("Unable to generate path for network.json");
+      return Err(anyhow::Error::msg(
+        "Unable to create path for network.json",
+      ));
+    }
+    let watch_path = watch_path.unwrap();
+  
+    let mut watcher = FileWatcher::new("network.json", watch_path);
+    watcher.set_file_exists_callback(load_network_json);
+    watcher.set_file_created_callback(load_network_json);
+    watcher.set_file_changed_callback(load_network_json);
+    loop {
+      let result = watcher.watch();
+      info!("network.json watcher returned: {result:?}");
+    }
+  }
+  
+  fn load_network_json() {
+    let njs = NetworkJson::load();
+    if let Ok(njs) = njs {
+        *NETWORK_JSON.write() = njs;
+    } else {
+        warn!("Unable to load network.json");
+    }
+  }

src/rust/lqosd/src/throughput_tracker/mod.rs

@@ -1,6 +1,6 @@
 mod throughput_entry;
 mod tracking_data;
-use crate::throughput_tracker::tracking_data::ThroughputTracker;
+use crate::{throughput_tracker::tracking_data::ThroughputTracker, shaped_devices_tracker::NETWORK_JSON};
 use log::{info, warn};
 use lqos_bus::{BusResponse, IpStats, TcHandle, XdpPpingResult};
 use lqos_sys::XdpIpAddress;
@@ -21,10 +21,11 @@ pub fn spawn_throughput_monitor() {
   std::thread::spawn(move || {
     periodic(interval_ms, "Throughput Monitor", &mut || {
       let mut throughput = THROUGHPUT_TRACKER.write();
-      throughput.copy_previous_and_reset_rtt();
+      let mut net_json = NETWORK_JSON.write();
+      throughput.copy_previous_and_reset_rtt(&mut net_json);
       throughput.apply_new_throughput_counters();
       throughput.apply_rtt_data();
-      throughput.update_totals();
+      throughput.update_totals(&mut net_json);
       throughput.next_cycle();
     });
   });

src/rust/lqosd/src/throughput_tracker/throughput_entry.rs

@@ -3,6 +3,7 @@ use lqos_bus::TcHandle;
 #[derive(Debug)]
 pub(crate) struct ThroughputEntry {
   pub(crate) circuit_id: Option<String>,
+  pub(crate) network_json_parents: Option<Vec<usize>>,
   pub(crate) first_cycle: u64,
   pub(crate) most_recent_cycle: u64,
   pub(crate) bytes: (u64, u64),

src/rust/lqosd/src/throughput_tracker/tracking_data.rs

@@ -2,6 +2,7 @@ use crate::shaped_devices_tracker::SHAPED_DEVICES;
 
 use super::{throughput_entry::ThroughputEntry, RETIRE_AFTER_SECONDS};
 use lqos_bus::TcHandle;
+use lqos_config::NetworkJson;
 use lqos_sys::{rtt_for_each, throughput_for_each, XdpIpAddress};
 use rayon::prelude::{IntoParallelRefMutIterator, ParallelIterator};
 use std::collections::HashMap;
@@ -28,7 +29,13 @@ impl ThroughputTracker {
     }
   }
 
-  pub(crate) fn copy_previous_and_reset_rtt(&mut self) {
+  pub(crate) fn copy_previous_and_reset_rtt(
+    &mut self,
+    netjson: &mut NetworkJson,
+  ) {
+    // Zero the previous funnel hierarchy current numbers
+    netjson.zero_throughput_and_rtt();
+
     // Copy previous byte/packet numbers and reset RTT data
     // We're using Rayon's "par_iter_mut" to spread the operation across
     // all CPU cores.
@@ -65,9 +72,37 @@ impl ThroughputTracker {
     circuit_id
   }
 
+  pub(crate) fn get_node_name_for_circuit_id(
+    circuit_id: Option<String>,
+  ) -> Option<String> {
+    if let Some(circuit_id) = circuit_id {
+      let shaped = SHAPED_DEVICES.read();
+      shaped
+        .devices
+        .iter()
+        .find(|d| d.circuit_id == circuit_id)
+        .map(|device| device.parent_node.clone())
+    } else {
+      None
+    }
+  }
+
+  pub(crate) fn lookup_network_parents(
+    circuit_id: Option<String>,
+  ) -> Option<Vec<usize>> {
+    if let Some(parent) = Self::get_node_name_for_circuit_id(circuit_id) {
+      let lock = crate::shaped_devices_tracker::NETWORK_JSON.read();
+      lock.get_parents_for_circuit_id(&parent)
+    } else {
+      None
+    }
+  }
+
   pub(crate) fn refresh_circuit_ids(&mut self) {
     self.raw_data.par_iter_mut().for_each(|(ip, data)| {
       data.circuit_id = Self::lookup_circuit_id(ip);
+      data.network_json_parents =
+        Self::lookup_network_parents(data.circuit_id.clone());
     });
   }
 
@@ -94,8 +129,10 @@ impl ThroughputTracker {
           entry.most_recent_cycle = cycle;
         }
       } else {
+        let circuit_id = Self::lookup_circuit_id(xdp_ip);
         let mut entry = ThroughputEntry {
-          circuit_id: Self::lookup_circuit_id(xdp_ip),
+          circuit_id: circuit_id.clone(),
+          network_json_parents: Self::lookup_network_parents(circuit_id),
           first_cycle: self.cycle,
           most_recent_cycle: 0,
           bytes: (0, 0),
@@ -135,7 +172,7 @@ impl ThroughputTracker {
     });
   }
 
-  pub(crate) fn update_totals(&mut self) {
+  pub(crate) fn update_totals(&mut self, net_json: &mut NetworkJson) {
     self.bytes_per_second = (0, 0);
     self.packets_per_second = (0, 0);
     self.shaped_bytes_per_second = (0, 0);
@@ -149,27 +186,43 @@ impl ThroughputTracker {
           v.packets.0.saturating_sub(v.prev_packets.0),
           v.packets.1.saturating_sub(v.prev_packets.1),
           v.tc_handle.as_u32() > 0,
+          &v.network_json_parents,
+          v.median_latency(),
         )
       })
-      .for_each(|(bytes_down, bytes_up, packets_down, packets_up, shaped)| {
-        self.bytes_per_second.0 =
-          self.bytes_per_second.0.checked_add(bytes_down).unwrap_or(0);
-        self.bytes_per_second.1 =
-          self.bytes_per_second.1.checked_add(bytes_up).unwrap_or(0);
-        self.packets_per_second.0 =
-          self.packets_per_second.0.checked_add(packets_down).unwrap_or(0);
-        self.packets_per_second.1 =
-          self.packets_per_second.1.checked_add(packets_up).unwrap_or(0);
-        if shaped {
-          self.shaped_bytes_per_second.0 = self
-            .shaped_bytes_per_second
-            .0
-            .checked_add(bytes_down)
-            .unwrap_or(0);
-          self.shaped_bytes_per_second.1 =
-            self.shaped_bytes_per_second.1.checked_add(bytes_up).unwrap_or(0);
-        }
-      });
+      .for_each(
+        |(bytes_down, bytes_up, packets_down, packets_up, shaped, parents, median_rtt)| {
+          self.bytes_per_second.0 =
+            self.bytes_per_second.0.checked_add(bytes_down).unwrap_or(0);
+          self.bytes_per_second.1 =
+            self.bytes_per_second.1.checked_add(bytes_up).unwrap_or(0);
+          self.packets_per_second.0 =
+            self.packets_per_second.0.checked_add(packets_down).unwrap_or(0);
+          self.packets_per_second.1 =
+            self.packets_per_second.1.checked_add(packets_up).unwrap_or(0);
+          if shaped {
+            self.shaped_bytes_per_second.0 = self
+              .shaped_bytes_per_second
+              .0
+              .checked_add(bytes_down)
+              .unwrap_or(0);
+            self.shaped_bytes_per_second.1 = self
+              .shaped_bytes_per_second
+              .1
+              .checked_add(bytes_up)
+              .unwrap_or(0);
+          }
+
+          // If we have parent node data, we apply it now
+          if let Some(parents) = parents {
+            net_json.add_throughput_cycle(
+              parents,
+              (self.bytes_per_second.0, self.bytes_per_second.1),
+              median_rtt,
+            )
+          }
+        },
+      );
   }
 
   pub(crate) fn next_cycle(&mut self) {