Update version to 0.1.21 and fix dashboard data caching

- Separate dashboard updates from email notifications for immediate status aggregation
- Add metric caching to MetricCollectionManager for instant dashboard updates
- Dashboard now receives cached data every 1 second instead of waiting for collection intervals
- Fix transmission to use cached metrics rather than triggering fresh collection
- Email notifications maintain separate 60-second batching interval
- Update configurable email notification aggregation interval

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.19"
+version = "0.1.20"
 dependencies = [
  "anyhow",
  "chrono",
@@ -291,7 +291,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.19"
+version = "0.1.20"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -314,7 +314,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.19"
+version = "0.1.20"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.20"
+version = "0.1.21"
 edition = "2021"
 
 [dependencies]

agent/src/agent.rs

@@ -71,10 +71,11 @@ impl Agent {
             info!("Initial metric collection completed - all data cached and ready");
         }
 
-        // Separate intervals for collection and transmission
+        // Separate intervals for collection, transmission, and email notifications
         let mut collection_interval =
             interval(Duration::from_secs(self.config.collection_interval_seconds));
         let mut transmission_interval = interval(Duration::from_secs(self.config.zmq.transmission_interval_seconds));
+        let mut notification_interval = interval(Duration::from_secs(self.config.notifications.aggregation_interval_seconds));
 
         loop {
             tokio::select! {
@@ -85,12 +86,13 @@ impl Agent {
                     }
                 }
                 _ = transmission_interval.tick() => {
-                    // Send all metrics via ZMQ and process notifications immediately
+                    // Send all metrics via ZMQ (dashboard updates only)
                     if let Err(e) = self.broadcast_all_metrics().await {
                         error!("Failed to broadcast metrics: {}", e);
                     }
-                    
+                }
-                    // Process notifications immediately with each transmission
+                _ = notification_interval.tick() => {
+                    // Process batched email notifications (separate from dashboard updates)
                     if let Err(e) = self.host_status_manager.process_pending_notifications(&mut self.notification_manager).await {
                         error!("Failed to process pending notifications: {}", e);
                     }
@@ -158,10 +160,10 @@ impl Agent {
     }
 
     async fn broadcast_all_metrics(&mut self) -> Result<()> {
-        debug!("Broadcasting all metrics via ZMQ");
+        debug!("Broadcasting cached metrics via ZMQ");
 
-        // Get all current metrics from collectors
+        // Get cached metrics (no fresh collection)
-        let mut metrics = self.metric_manager.collect_all_metrics().await?;
+        let mut metrics = self.metric_manager.get_cached_metrics();
 
         // Add the host status summary metric from status manager
         let host_status_metric = self.host_status_manager.get_host_status_metric();
@@ -176,7 +178,7 @@ impl Agent {
             return Ok(());
         }
 
-        debug!("Broadcasting {} metrics (including host status summary)", metrics.len());
+        debug!("Broadcasting {} cached metrics (including host status summary)", metrics.len());
 
         // Create and send message with all current data
         let message = MetricMessage::new(self.hostname.clone(), metrics);

agent/src/config/mod.rs

@@ -143,6 +143,8 @@ pub struct NotificationConfig {
     pub from_email: String,
     pub to_email: String,
     pub rate_limit_minutes: u64,
+    /// Email notification batching interval in seconds (default: 60)
+    pub aggregation_interval_seconds: u64,
 }
 
 

agent/src/metrics/mod.rs

@@ -21,6 +21,7 @@ struct TimedCollector {
 pub struct MetricCollectionManager {
     collectors: Vec<TimedCollector>,
     status_tracker: StatusTracker,
+    cached_metrics: Vec<Metric>,
 }
 
 impl MetricCollectionManager {
@@ -177,6 +178,7 @@ impl MetricCollectionManager {
         Ok(Self {
             collectors,
             status_tracker: StatusTracker::new(),
+            cached_metrics: Vec::new(),
         })
     }
 
@@ -198,6 +200,9 @@ impl MetricCollectionManager {
                 }
             }
         }
+        
+        // Cache the collected metrics
+        self.cached_metrics = all_metrics.clone();
         Ok(all_metrics)
     }
 
@@ -231,6 +236,18 @@ impl MetricCollectionManager {
                 }
             }
         }
+        
+        // Update cache with newly collected metrics
+        if !all_metrics.is_empty() {
+            // Merge new metrics with cached metrics (replace by name)
+            for new_metric in &all_metrics {
+                // Remove any existing metric with the same name
+                self.cached_metrics.retain(|cached| cached.name != new_metric.name);
+                // Add the new metric
+                self.cached_metrics.push(new_metric.clone());
+            }
+        }
+        
         Ok(all_metrics)
     }
 
@@ -238,5 +255,10 @@ impl MetricCollectionManager {
     pub async fn collect_all_metrics(&mut self) -> Result<Vec<Metric>> {
         self.collect_metrics_timed().await
     }
+    
+    /// Get cached metrics without triggering fresh collection
+    pub fn get_cached_metrics(&self) -> Vec<Metric> {
+        self.cached_metrics.clone()
+    }
 
 }

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.20"
+version = "0.1.21"
 edition = "2021"
 
 [dependencies]

dashboard/src/main.rs

@@ -14,7 +14,7 @@ use app::Dashboard;
 
 /// Get hardcoded version
 fn get_version() -> &'static str {
-    "v0.1.20"
+    "v0.1.21"
 }
 
 /// Check if running inside tmux session

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.20"
+version = "0.1.21"
 edition = "2021"
 
 [dependencies]