Files
socktop/socktop_agent/tests/process_details.rs
T
jasonwitty e4b0d9b9f6 fix(agent): GPU worker thread, async journalctl, correctness + cache fixes
Lightweight:
- GPU collection moves to a dedicated worker thread that owns the gfxinfo
  handle for the process lifetime. gfxinfo's active_gpu() runs a full NVML
  init/teardown (~20ms, blocking) and we were paying it on the async
  runtime for every collect — measured at ~80% of the agent's entire
  active CPU on a GPU machine. The handle holds Rc<Nvml> (not Send), so a
  thread + mpsc/oneshot channel pair confines it; a zero-total-VRAM reply
  is treated as a dead session (driver reload) and re-probed.
- journalctl now runs via tokio::process instead of blocking one of the
  two runtime workers for the duration of the subprocess.
- TtlCell (state.rs) replaces the four hand-rolled static TTL caches; a
  cached negative result now counts as fresh, so hosts with no matching
  temp sensor or GPU stop rescanning every request. Single lock+clone on
  the GPU cache hit path (was two).

Correctness:
- Process/child CPU times are now microseconds as documented; they were
  milliseconds, rendering 1000x too small next to (correct) thread times.
- Non-Linux per-process CPU%% clamps AFTER dividing by core count; a
  4-cores-busy process on an 8-core box reported 12.5% instead of 50%.
- Journal timestamps are real RFC 3339 UTC plus an additive timestamp_us
  field (sorting is now numeric); the old strings were Debug-formatted
  SystemTime mangled by string replace.
- Partition detection uses /sys/block on Linux: whole-disk filesystems on
  names like nvme0n1 or zram1 are no longer misclassified as partitions.
  One shared parent_disk_name() replaces two inline copies.
- New sampled_at_ms on the metrics payload (additive) records when the
  snapshot was actually collected, so clients can compute exact rates
  across the agent's TTL cache.

Security/robustness:
- key.pem is created 0600 (was umask default 0644, world-readable) and
  pre-1.51 keys are tightened on startup.
- Per-PID detail/journal caches now evict (60s max age, 64 entries max);
  they previously grew without bound under PID-walking clients.
- The two per-PID ws handlers collapse into one generic helper.
- /proc/<pid>/stat parsing unified in one comm-safe module.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-19 14:43:37 -07:00

90 lines
3.0 KiB
Rust

//! Tests for process detail collection functionality
use socktop_agent::metrics::{collect_journal_entries, collect_process_metrics};
use socktop_agent::state::AppState;
use std::process;
#[tokio::test]
async fn test_collect_process_metrics_self() {
// Test collecting metrics for our own process
let pid = process::id();
let state = AppState::new();
match collect_process_metrics(pid, &state).await {
Ok(response) => {
assert_eq!(response.process.pid, pid);
assert!(!response.process.name.is_empty());
// Command might be empty on some systems, so don't assert on it
assert!(response.cached_at > 0);
println!(
"✓ Process metrics collected for PID {}: {} ({})",
pid, response.process.name, response.process.command
);
}
Err(e) => {
// This might fail if sysinfo can't find the process, which is possible
println!("⚠ Warning: Failed to collect process metrics for self: {e}");
}
}
}
#[tokio::test]
async fn test_collect_journal_entries_self() {
// Test collecting journal entries for our own process
let pid = process::id();
match collect_journal_entries(pid).await {
Ok(response) => {
assert!(response.cached_at > 0);
println!(
"✓ Journal entries collected for PID {}: {} entries",
pid, response.total_count
);
if !response.entries.is_empty() {
let entry = &response.entries[0];
println!(" Latest entry: {}", entry.message);
}
}
Err(e) => {
// This might fail if journalctl is not available or restricted
println!("⚠ Warning: Failed to collect journal entries for self: {e}");
}
}
}
#[tokio::test]
async fn test_collect_process_metrics_invalid_pid() {
// Test with an invalid PID
let invalid_pid = 999999;
let state = AppState::new();
match collect_process_metrics(invalid_pid, &state).await {
Ok(_) => {
println!("⚠ Warning: Unexpectedly found process for invalid PID {invalid_pid}");
}
Err(e) => {
println!("✓ Correctly failed for invalid PID {invalid_pid}: {e}");
assert!(e.contains("not found"));
}
}
}
#[tokio::test]
async fn test_collect_journal_entries_invalid_pid() {
// Test with an invalid PID - journalctl might still return empty results
let invalid_pid = 999999;
match collect_journal_entries(invalid_pid).await {
Ok(response) => {
println!(
"✓ Journal query completed for invalid PID {} (empty result expected): {} entries",
invalid_pid, response.total_count
);
// Should be empty or very few entries
}
Err(e) => {
println!("✓ Journal query failed for invalid PID {invalid_pid}: {e}");
}
}
}