feat: add tui-max-flows config

src/config.rs

@@ -231,6 +231,7 @@ pub struct TrippyConfig {
     pub dns_resolve_method: ResolveMethod,
     pub dns_lookup_as_info: bool,
     pub tui_max_samples: usize,
+    pub tui_max_flows: usize,
     pub tui_preserve_screen: bool,
     pub tui_refresh_rate: Duration,
     pub tui_privacy_max_ttl: u8,
@@ -413,6 +414,11 @@ impl TrippyConfig {
             cfg_file_tui.tui_max_samples,
             constants::DEFAULT_TUI_MAX_SAMPLES,
         );
+        let tui_max_flows = cfg_layer(
+            args.tui_max_flows,
+            cfg_file_tui.tui_max_flows,
+            constants::DEFAULT_TUI_MAX_FLOWS,
+        );
         let tui_preserve_screen = cfg_layer_bool_flag(
             args.tui_preserve_screen,
             cfg_file_tui.tui_preserve_screen,
@@ -599,6 +605,7 @@ impl TrippyConfig {
             dns_resolve_method,
             dns_lookup_as_info,
             tui_max_samples,
+            tui_max_flows,
             tui_preserve_screen,
             tui_refresh_rate,
             tui_privacy_max_ttl,
@@ -649,6 +656,7 @@ impl Default for TrippyConfig {
             dns_resolve_method: dns_resolve_method(constants::DEFAULT_DNS_RESOLVE_METHOD),
             dns_lookup_as_info: constants::DEFAULT_DNS_LOOKUP_AS_INFO,
             tui_max_samples: constants::DEFAULT_TUI_MAX_SAMPLES,
+            tui_max_flows: constants::DEFAULT_TUI_MAX_FLOWS,
             tui_preserve_screen: constants::DEFAULT_TUI_PRESERVE_SCREEN,
             tui_refresh_rate: duration(constants::DEFAULT_TUI_REFRESH_RATE),
             tui_privacy_max_ttl: constants::DEFAULT_TUI_PRIVACY_MAX_TTL,

src/config/cmd.rs

@@ -177,6 +177,10 @@ pub struct Args {
     #[arg(long, short = 's')]
     pub tui_max_samples: Option<usize>,
 
+    /// The maximum number of flows to show [default: 40]
+    #[arg(long)]
+    pub tui_max_flows: Option<usize>,
+
     /// Preserve the screen on exit [default: false]
     #[arg(long)]
     pub tui_preserve_screen: bool,

src/config/constants.rs

@@ -76,6 +76,9 @@ pub const DEFAULT_STRATEGY_READ_TIMEOUT: &str = "10ms";
 /// The default value for `tui-max-samples`.
 pub const DEFAULT_TUI_MAX_SAMPLES: usize = 256;
 
+/// The default value for `tui-max-flows`.
+pub const DEFAULT_TUI_MAX_FLOWS: usize = 64;
+
 /// The default value for `tui-preserve-screen`.
 pub const DEFAULT_TUI_PRESERVE_SCREEN: bool = false;
 

src/config/file.rs

@@ -213,6 +213,7 @@ impl Default for ConfigReport {
 #[serde(rename_all = "kebab-case", deny_unknown_fields)]
 pub struct ConfigTui {
     pub tui_max_samples: Option<usize>,
+    pub tui_max_flows: Option<usize>,
     pub tui_preserve_screen: Option<bool>,
     pub tui_refresh_rate: Option<String>,
     pub tui_privacy_max_ttl: Option<u8>,
@@ -228,6 +229,7 @@ impl Default for ConfigTui {
     fn default() -> Self {
         Self {
             tui_max_samples: Some(super::constants::DEFAULT_TUI_MAX_SAMPLES),
+            tui_max_flows: Some(super::constants::DEFAULT_TUI_MAX_FLOWS),
             tui_preserve_screen: Some(super::constants::DEFAULT_TUI_PRESERVE_SCREEN),
             tui_refresh_rate: Some(String::from(super::constants::DEFAULT_TUI_REFRESH_RATE)),
             tui_privacy_max_ttl: Some(super::constants::DEFAULT_TUI_PRIVACY_MAX_TTL),

src/frontend/config.rs

@@ -27,6 +27,8 @@ pub struct TuiConfig {
     pub max_addrs: Option<u8>,
     /// The maximum number of samples to record per hop.
     pub max_samples: usize,
+    /// The maximum number of flows to display.
+    pub max_flows: usize,
     /// The Tui color theme.
     pub theme: Theme,
     /// The Tui keyboard bindings.
@@ -46,6 +48,7 @@ impl TuiConfig {
         geoip_mode: GeoIpMode,
         max_addrs: Option<u8>,
         max_samples: usize,
+        max_flows: usize,
         tui_theme: TuiTheme,
         tui_bindings: &TuiBindings,
     ) -> Self {
@@ -60,6 +63,7 @@ impl TuiConfig {
             geoip_mode,
             max_addrs,
             max_samples,
+            max_flows,
             theme: Theme::from(tui_theme),
             bindings: Bindings::from(*tui_bindings),
         }

src/frontend/render/settings.rs

@@ -149,6 +149,7 @@ fn format_all_settings(app: &TuiApp) -> Vec<(&'static str, &'static str, Vec<Set
 fn format_tui_settings(app: &TuiApp) -> Vec<SettingsItem> {
     vec![
         SettingsItem::new("tui-max-samples", format!("{}", app.tui_config.max_samples)),
+        SettingsItem::new("tui-max-flows", format!("{}", app.tui_config.max_flows)),
         SettingsItem::new(
             "tui-preserve-screen",
             format!("{}", app.tui_config.preserve_screen),
@@ -419,7 +420,7 @@ fn format_theme_settings(app: &TuiApp) -> Vec<SettingsItem> {
 
 /// The name and number of items for each tabs in the setting dialog.
 pub const SETTINGS_TABS: [(&str, usize); 6] = [
-    ("Tui", 8),
+    ("Tui", 9),
     ("Trace", 15),
     ("Dns", 4),
     ("GeoIp", 1),

src/frontend/tui_app.rs

@@ -137,6 +137,7 @@ impl TuiApp {
             })
             .sorted_by(order_flows)
             .rev()
+            .take(self.tui_config.max_flows)
             .collect::<Vec<_>>();
     }
 

src/main.rs

@@ -314,6 +314,7 @@ fn make_tui_config(args: &TrippyConfig) -> TuiConfig {
         args.tui_geoip_mode,
         args.tui_max_addrs,
         args.tui_max_samples,
+        args.tui_max_flows,
         args.tui_theme,
         &args.tui_bindings,
     )

trippy-config-sample.toml

@@ -266,6 +266,9 @@ tui-max-addrs = 0
 # The maximum number of samples to record per hop [default: 256]
 tui-max-samples = 256
 
+# The maximum number of flows to show [default: 40]
+tui-max-flows = 64
+
 # Whether to preserve the screen on exit [default: false]
 tui-preserve-screen = false