From d8ae36dc34250dd567e28fede1f1c01fdbb57d70 Mon Sep 17 00:00:00 2001
From: "Roman S. Borschel" <roman@parity.io>
Date: Mon, 14 Sep 2020 11:19:43 +0200
Subject: [PATCH 1/3] Further decouple SystemInterval values.

---
 backend/src/node.rs         | 22 ++++++++++++++++------
 backend/src/node/message.rs | 13 ++++++-------
 2 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/backend/src/node.rs b/backend/src/node.rs
index a359b9495..67aa43066 100644
--- a/backend/src/node.rs
+++ b/backend/src/node.rs
@@ -142,12 +142,22 @@ impl Node {
     }
 
     pub fn update_stats(&mut self, interval: &SystemInterval) -> Option<&NodeStats> {
-        if self.stats != interval.stats {
-            self.stats = interval.stats;
-            Some(&self.stats)
-        } else {
-            None
-        }
+      let mut changed = false;
+
+      if let Some(peers) = interval.peers {
+          self.stats.peers = peers;
+          changed = true;
+      }
+      if let Some(txcount) = interval.txcount {
+          self.stats.txcount = txcount;
+          changed = true;
+      }
+
+      if changed {
+          Some(&self.stats)
+      } else {
+          None
+      }
     }
 
     pub fn update_io(&mut self, interval: &SystemInterval) -> Option<&NodeIO> {
diff --git a/backend/src/node/message.rs b/backend/src/node/message.rs
index 9ce2afca2..ee4f2cc91 100644
--- a/backend/src/node/message.rs
+++ b/backend/src/node/message.rs
@@ -2,7 +2,7 @@ use actix::prelude::*;
 use chrono::{DateTime, Utc};
 use serde::Deserialize;
 use serde::de::IgnoredAny;
-use crate::node::{NodeDetails, NodeStats};
+use crate::node::NodeDetails;
 use crate::types::{Block, BlockNumber, BlockHash};
 
 #[derive(Deserialize, Debug, Message)]
@@ -63,14 +63,14 @@ pub struct SystemConnected {
 
 #[derive(Deserialize, Debug)]
 pub struct SystemInterval {
-    #[serde(flatten)]
-    pub stats: NodeStats,
+    pub peers: Option<u64>,
+    pub txcount: Option<u64>,
     pub bandwidth_upload: Option<f64>,
     pub bandwidth_download: Option<f64>,
     pub finalized_height: Option<BlockNumber>,
     pub finalized_hash: Option<BlockHash>,
     #[serde(flatten)]
-    pub block: Block,
+    pub block: Option<Block>,
     pub network_state: Option<IgnoredAny>,
     pub used_state_cache_size: Option<f32>,
 }
@@ -132,9 +132,8 @@ impl Block {
 impl Details {
     pub fn best_block(&self) -> Option<&Block> {
         match self {
-            Details::BlockImport(block) | Details::SystemInterval(SystemInterval { block, .. }) => {
-                Some(block)
-            }
+            Details::BlockImport(block) => Some(block),
+            Details::SystemInterval(SystemInterval { block, .. }) => block.as_ref(),
             _ => None,
         }
     }

From 5ecd6e2c4657697ed087a9d3eaa665645f5406fd Mon Sep 17 00:00:00 2001
From: Roman Borschel <romanb@users.noreply.github.com>
Date: Mon, 14 Sep 2020 17:04:38 +0200
Subject: [PATCH 2/3] Update backend/src/node.rs

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>
---
 backend/src/node.rs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/backend/src/node.rs b/backend/src/node.rs
index 67aa43066..2c94c57aa 100644
--- a/backend/src/node.rs
+++ b/backend/src/node.rs
@@ -145,12 +145,16 @@ impl Node {
       let mut changed = false;
 
       if let Some(peers) = interval.peers {
-          self.stats.peers = peers;
-          changed = true;
+          if peers != self.stats.peers {
+              self.stats.peers = peers;
+              changed = true;
+          }
       }
       if let Some(txcount) = interval.txcount {
-          self.stats.txcount = txcount;
-          changed = true;
+          if txcoint != self.stats.txcount {
+              self.stats.txcount = txcount;
+              changed = true;
+          }
       }
 
       if changed {

From a65250118e50ff7c805d28f73b8e9d0647c8c221 Mon Sep 17 00:00:00 2001
From: Roman Borschel <romanb@users.noreply.github.com>
Date: Mon, 14 Sep 2020 17:05:36 +0200
Subject: [PATCH 3/3] Update backend/src/node.rs

---
 backend/src/node.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/src/node.rs b/backend/src/node.rs
index 2c94c57aa..740b6907a 100644
--- a/backend/src/node.rs
+++ b/backend/src/node.rs
@@ -151,7 +151,7 @@ impl Node {
           }
       }
       if let Some(txcount) = interval.txcount {
-          if txcoint != self.stats.txcount {
+          if txcount != self.stats.txcount {
               self.stats.txcount = txcount;
               changed = true;
           }