debugbundle 1.0.0-alpha.1

Safe, bounded runtime error reporting for Rust, Axum and Actix Web
Documentation 
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#![cfg(all(feature = "local", unix))]
use debugbundle::{storage::SecureDirectory, Client, Config, Context, Level};
use serde_json::{json, Value};
use std::{
    net::TcpListener,
    path::PathBuf,
    time::{Duration, Instant},
};

#[test]
#[ignore = "requires isolated 64-KiB tmpfs; run make test-storage-faults"]
fn disk_full_short_writes_publish_no_arrays_and_retain_local_ownership_without_http_fallback() {
    let root = PathBuf::from(
        std::env::var_os("DEBUGBUNDLE_STORAGE_FAULT_DIR").expect("bounded tmpfs fixture required"),
    );
    let directory = SecureDirectory::open(&root).unwrap();
    let events=(0..8).map(|index|json!({"schema_version":"2026-03-01","event_id":uuid::Uuid::new_v4().to_string(),"event_type":"log_event","sdk_name":"@debugbundle/sdk-rust","sdk_version":"1.0.0-alpha.1","service":{"name":"disk-fault","environment":"test","runtime":"rust"},"occurred_at":"2026-11-13T00:00:00.000Z","payload":{"level":"error","message":format!("synthetic-{index} {}","x".repeat(15000)),"attributes":{}}})).collect::<Vec<Value>>();
    assert!(serde_json::to_vec(&events).unwrap().len() > 100000);
    let error = directory.write_events(&events, "disk-fault").unwrap_err();
    assert_eq!(
        error.raw_os_error(),
        Some(28),
        "fixture must fail with real ENOSPC"
    );
    assert_eq!(
        root.read_dir().unwrap().count(),
        0,
        "no partial arrays or temporary files"
    );

    let trap = TcpListener::bind("127.0.0.1:0").unwrap();
    trap.set_nonblocking(true).unwrap();
    let client = Client::new(Config {
        endpoint: format!("http://{}/v1/events", trap.local_addr().unwrap()),
        allow_insecure_http: true,
        batch_size: 100,
        max_buffered_events: 8,
        flush_interval: Duration::from_secs(300),
        ..Config::local("disk-fault", &root)
    });
    for (index, prefix) in [
        "Alpha", "Bravo", "Charlie", "Delta", "Echo", "Foxtrot", "Golf", "Hotel",
    ]
    .into_iter()
    .enumerate()
    {
        let deadline = Instant::now() + Duration::from_secs(2);
        loop {
            client.capture_log(
                Level::Error,
                &format!("{prefix} {}", "x".repeat(15000)),
                &Context::default(),
            );
            let owned = client.status().buffered_events;
            if owned == index + 1 {
                break;
            }
            assert_eq!(owned, index, "only this prefix may add pending ownership");
            assert!(
                Instant::now() < deadline,
                "fault fixture seed never admitted"
            );
            std::thread::yield_now();
        }
    }
    // No timer/batch flush ran during seeding. All eight slots hold primaries;
    // a contention summary cannot take a ninth slot during the failed flush.
    assert_eq!(client.status().buffered_events, 8);
    assert!(client.status().buffered_bytes > 100000);
    let start = Instant::now();
    let outcome = client.flush(Duration::from_millis(100));
    assert!(!outcome.drained && outcome.timed_out);
    assert!(start.elapsed() < Duration::from_secs(2));
    assert_eq!(client.status().buffered_events, 8);
    assert_eq!(root.read_dir().unwrap().count(), 0);
    assert_eq!(
        trap.accept().unwrap_err().kind(),
        std::io::ErrorKind::WouldBlock
    );
    client.shutdown(Duration::from_millis(100));
}