protobuff Process list

BREAKING: Process list over WS is now Protocol Buffers; client required.
Agent: returns all processes (no server-side top-k); large payloads gzip-compressed.
Client: decodes protobuf (gz/raw), moves sorting/pagination to TUI.
Build: add prost/prost-build with vendored protoc; enable thin LTO, panic=abort, strip symbols.
Cleanup: cfg-gate Linux-only code; fix Clippy across platforms; tests updated (ws probe TLS CA).

socktop_agent/src/main.rs

@@ -3,6 +3,7 @@
 
 mod gpu;
 mod metrics;
+mod proto;
 mod sampler;
 mod state;
 mod types;

socktop_agent/src/metrics.rs

@@ -236,9 +236,9 @@ fn read_proc_jiffies(pid: u32) -> Option<u64> {
     Some(utime.saturating_add(stime))
 }
 
-/// Collect top processes (Linux variant): compute CPU% via /proc jiffies delta.
+/// Collect all processes (Linux): compute CPU% via /proc jiffies delta; sorting moved to client.
 #[cfg(target_os = "linux")]
-pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPayload {
+pub async fn collect_processes_all(state: &AppState) -> ProcessesPayload {
     // Fresh view to avoid lingering entries and select "no tasks" (no per-thread rows).
     let mut sys = System::new();
     sys.refresh_processes_specifics(
@@ -291,7 +291,7 @@ pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPay
             .collect();
         return ProcessesPayload {
             process_count: total_count,
-            top_processes: top_k_sorted(procs, k),
+            top_processes: procs,
         };
     }
 
@@ -317,13 +317,13 @@ pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPay
 
     ProcessesPayload {
         process_count: total_count,
-        top_processes: top_k_sorted(procs, k),
+        top_processes: procs,
     }
 }
 
-/// Collect top processes (non-Linux): use sysinfo's internal CPU% by doing a double refresh.
+/// Collect all processes (non-Linux): use sysinfo's internal CPU% by doing a double refresh.
 #[cfg(not(target_os = "linux"))]
-pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPayload {
+pub async fn collect_processes_all(state: &AppState) -> ProcessesPayload {
     use tokio::time::sleep;
 
     let mut sys = state.sys.lock().await;
@@ -354,8 +354,6 @@ pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPay
             mem_bytes: p.memory(),
         })
         .collect();
-
-    procs = top_k_sorted(procs, k);
     ProcessesPayload {
         process_count: total_count,
         top_processes: procs,
@@ -363,19 +361,4 @@ pub async fn collect_processes_top_k(state: &AppState, k: usize) -> ProcessesPay
 }
 
 // Small helper to select and sort top-k by cpu
-fn top_k_sorted(mut v: Vec<ProcessInfo>, k: usize) -> Vec<ProcessInfo> {
-    if v.len() > k {
-        v.select_nth_unstable_by(k, |a, b| {
-            b.cpu_usage
-                .partial_cmp(&a.cpu_usage)
-                .unwrap_or(std::cmp::Ordering::Equal)
-        });
-        v.truncate(k);
-    }
-    v.sort_by(|a, b| {
-        b.cpu_usage
-            .partial_cmp(&a.cpu_usage)
-            .unwrap_or(std::cmp::Ordering::Equal)
-    });
-    v
-}
+// Client now handles sorting/pagination.

socktop_agent/src/proto.rs

@@ -1,32 +1,5 @@
-use serde::{Deserialize, Serialize};
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct Metrics {
-    pub ts_unix_ms: i64,
-    pub host: String,
-    pub uptime_secs: u64,
-    pub cpu_overall: f32,
-    pub cpu_per_core: Vec<f32>,
-    pub load_avg: (f64, f64, f64),
-    pub mem_total_mb: u64,
-    pub mem_used_mb: u64,
-    pub swap_total_mb: u64,
-    pub swap_used_mb: u64,
-    pub net_aggregate: NetTotals,
-    pub top_processes: Vec<Proc>,
+// Generated protobuf modules live under OUT_DIR; include them here.
+// This module will expose socktop::Processes and socktop::Process types.
+pub mod pb {
+    include!(concat!(env!("OUT_DIR"), "/socktop.rs"));
 }
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct NetTotals {
-    pub rx_bytes: u64,
-    pub tx_bytes: u64,
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct Proc {
-    pub pid: i32,
-    pub name: String,
-    pub cpu: f32,
-    pub mem_mb: u64,
-    pub status: String,
-}

socktop_agent/src/ws.rs

@@ -10,7 +10,8 @@ use futures_util::StreamExt;
 use std::collections::HashMap;
 use std::io::Write;
 
-use crate::metrics::{collect_disks, collect_fast_metrics, collect_processes_top_k};
+use crate::metrics::{collect_disks, collect_fast_metrics, collect_processes_all};
+use crate::proto::pb;
 use crate::state::AppState;
 
 pub async fn ws_handler(
@@ -44,8 +45,39 @@ async fn handle_socket(mut socket: WebSocket, state: AppState) {
                 let _ = send_json(&mut socket, &d).await;
             }
             Message::Text(ref text) if text == "get_processes" => {
-                let p = collect_processes_top_k(&state, 50).await;
-                let _ = send_json(&mut socket, &p).await;
+                let payload = collect_processes_all(&state).await;
+                // Map to protobuf message
+                let rows: Vec<pb::Process> = payload
+                    .top_processes
+                    .into_iter()
+                    .map(|p| pb::Process {
+                        pid: p.pid,
+                        name: p.name,
+                        cpu_usage: p.cpu_usage,
+                        mem_bytes: p.mem_bytes,
+                    })
+                    .collect();
+                let pb = pb::Processes {
+                    process_count: payload.process_count as u64,
+                    rows,
+                };
+                let mut buf = Vec::with_capacity(8 * 1024);
+                if prost::Message::encode(&pb, &mut buf).is_err() {
+                    let _ = socket.send(Message::Close(None)).await;
+                } else {
+                    // compress if large
+                    if buf.len() <= 768 {
+                        let _ = socket.send(Message::Binary(buf)).await;
+                    } else {
+                        let mut enc = GzEncoder::new(Vec::new(), Compression::fast());
+                        if enc.write_all(&buf).is_ok() {
+                            let bin = enc.finish().unwrap_or(buf);
+                            let _ = socket.send(Message::Binary(bin)).await;
+                        } else {
+                            let _ = socket.send(Message::Binary(buf)).await;
+                        }
+                    }
+                }
             }
             Message::Close(_) => break,
             _ => {}