feat: segregate traces by flowid (#760) - WIP

src/frontend/render/body.rs

@@ -10,7 +10,7 @@ use ratatui::Frame;
 pub fn render(f: &mut Frame<'_>, rec: Rect, app: &mut TuiApp) {
     if let Some(err) = app.selected_tracer_data.error() {
         bsod::render(f, rec, err);
-    } else if app.tracer_data().hops().is_empty() {
+    } else if app.tracer_data().hop_count() == 0 {
         splash::render(f, app, rec);
     } else if app.show_chart {
         chart::render(f, app, rec);

src/frontend/render/chart.rs

@@ -8,20 +8,19 @@ use ratatui::Frame;
 
 /// Render the ping history for all hops as a chart.
 pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
-    let selected_hop = app.table_state.selected().map_or_else(
-        || app.tracer_data().target_hop(),
-        |s| &app.tracer_data().hops()[s],
-    );
-    let samples = app.tui_config.max_samples / app.zoom_factor;
-    let series_data = app
-        .selected_tracer_data
-        .hops()
-        .iter()
-        .map(|hop| {
-            hop.samples()
+    let selected_index = app
+        .table_state
+        .selected()
+        .unwrap_or_else(|| app.tracer_data().target_index());
+    let sample_count = app.tui_config.max_samples / app.zoom_factor;
+    let hop_range = app.tracer_data().hop_range();
+    let series_data = hop_range
+        .map(|hindex| {
+            let samples = app.tracer_data().samples(hindex);
+            samples
                 .iter()
                 .enumerate()
-                .take(samples)
+                .take(sample_count)
                 .map(|(i, s)| (i as f64, (s.as_secs_f64() * 1000_f64)))
                 .collect::<Vec<_>>()
         })
@@ -43,9 +42,7 @@ pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
                 .marker(Marker::Braille)
                 .style(Style::default().fg({
                     match i {
-                        i if i + 1 == selected_hop.ttl() as usize => {
-                            app.tui_config.theme.hops_chart_selected_color
-                        }
+                        i if i == selected_index => app.tui_config.theme.hops_chart_selected_color,
                         _ => app.tui_config.theme.hops_chart_unselected_color,
                     }
                 }))
@@ -56,13 +53,16 @@ pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
         .x_axis(
             Axis::default()
                 .title("Samples")
-                .bounds([0_f64, samples as f64])
+                .bounds([0_f64, sample_count as f64])
                 .labels_alignment(Alignment::Right)
                 .labels(
-                    ["0".to_string(), format!("{samples} ({}x)", app.zoom_factor)]
-                        .into_iter()
-                        .map(Span::from)
-                        .collect(),
+                    [
+                        "0".to_string(),
+                        format!("{sample_count} ({}x)", app.zoom_factor),
+                    ]
+                    .into_iter()
+                    .map(Span::from)
+                    .collect(),
                 )
                 .style(Style::default().fg(app.tui_config.theme.hops_chart_axis_color)),
         )

src/frontend/render/header.rs

@@ -94,7 +94,7 @@ pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
             Span::raw(render_status(app)),
             Span::raw(format!(
                 ", discovered {} hops",
-                app.tracer_data().hops().len()
+                app.tracer_data().hop_count()
             )),
         ]),
     ];

src/frontend/render/histogram.rs

@@ -8,16 +8,18 @@ use std::time::Duration;
 
 /// Render a histogram of ping frequencies.
 pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
-    let target_hop = app.table_state.selected().map_or_else(
-        || app.tracer_data().target_hop(),
-        |s| &app.tracer_data().hops()[s],
-    );
-    let freq_data = sample_frequency(target_hop.samples());
+    let hindex = app
+        .table_state
+        .selected()
+        .unwrap_or_else(|| app.tracer_data().target_index());
+    let ttl = app.tracer_data().ttl(hindex);
+    let samples = app.tracer_data().samples(hindex);
+    let freq_data = sample_frequency(samples);
     let freq_data_ref: Vec<_> = freq_data.iter().map(|(b, c)| (b.as_str(), *c)).collect();
     let barchart = BarChart::default()
         .block(
             Block::default()
-                .title(format!("Frequency #{}", target_hop.ttl()))
+                .title(format!("Frequency #{ttl}"))
                 .style(
                     Style::default()
                         .bg(app.tui_config.theme.bg_color)

src/frontend/render/history.rs

@@ -6,17 +6,18 @@ use ratatui::Frame;
 
 /// Render the ping history for the final hop which is typically the target.
 pub fn render(f: &mut Frame<'_>, app: &TuiApp, rect: Rect) {
-    let selected_hop = app.selected_hop_or_target();
-    let data = selected_hop
-        .samples()
+    let hindex = app.selected_hop_or_target_index();
+    let samples = app.tracer_data().samples(hindex);
+    let ttl = app.tracer_data().ttl(hindex);
+    let data = samples
         .iter()
         .take(rect.width as usize)
         .map(|s| (s.as_secs_f64() * 1000_f64) as u64)
         .collect::<Vec<_>>();
     let history = Sparkline::default()
         .block(
             Block::default()
-                .title(format!("Samples #{}", selected_hop.ttl()))
+                .title(format!("Samples #{ttl}"))
                 .style(
                     Style::default()
                         .bg(app.tui_config.theme.bg_color)