Engine: crash reports, a log file and bug report drafts (#107)

crash: a panic hook and a locked per-run command journal (adapted from
SolidCraft's crash reports). A panic in a command becomes a report with
the model from before it and the command; one outside commands, or an
unclean exit found at the next start (abort, segfault, a crash in a
graphics driver, a kill: what #248 needs), a report with the model the
journal starts from (autosave, file or a copy) and the commands since,
the last control request and the dead run's log lines. Reports are
bounded, deduplicated by signature and replayable (crash::replay, with
writes confined to a scratch folder). The crash folder follows the
automation temp area in --control and CI runs.

logfile: a small size-rotated file logger behind the log facade.

bug_report: GitHub bug-form drafts. Version, OS and what happened by
default, home folder shown as ~; the command journal only with Share my
session, the model only with Include the model as well; a session too
long for the link becomes a file to attach and the clipboard text.

Commands: diagnostics.crash_reports, diagnostics.crash_report,
diagnostics.bug_report (Tools › Help, with its icon) and
diagnostics.crash_test (FIELDCRAFT_CRASH_TEST=1 only).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
This commit is contained in:
jyvikoandClaude Opus 5.5 authored and Irakli Kourtis committed 2026-10-15 00:36:18 -04:00
1 parent 3d51bde9dd
commit 080ff048c6
15 files changed
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@@ -36,6 +36,7 @@ is committed and listed here with its exports.
| assets/icons/deck.write.abaqus.svg, assets/icons/deck.write.abaqus.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.abaqus.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/deck.write.abaqus.svg, assets/icons/deck.write.abaqus.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.abaqus.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/deck.write.lsdyna.svg, assets/icons/deck.write.lsdyna.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.lsdyna.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/deck.write.lsdyna.svg, assets/icons/deck.write.lsdyna.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.lsdyna.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/deck.write.nastran.svg, assets/icons/deck.write.nastran.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.nastran.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/deck.write.nastran.svg, assets/icons/deck.write.nastran.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/deck.write.nastran.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/diagnostics.bug_report.svg, assets/icons/diagnostics.bug_report.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/diagnostics.bug_report.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/edit.redo.svg, assets/icons/edit.redo.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/edit.redo.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/edit.redo.svg, assets/icons/edit.redo.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/edit.redo.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/edit.undo.svg, assets/icons/edit.undo.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/edit.undo.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/edit.undo.svg, assets/icons/edit.undo.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/edit.undo.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
| assets/icons/file.open.svg, assets/icons/file.open.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/file.open.json` (`cargo xtask icons`) | MIT OR Apache-2.0 | | assets/icons/file.open.svg, assets/icons/file.open.vectorcraft | FieldCraft contributors | Original toolbar icon drawn with VectorCraft from `assets/icons/src/file.open.json` (`cargo xtask icons`) | MIT OR Apache-2.0 |
@@ -186,6 +187,7 @@ is committed and listed here with its exports.
| crates/ui-egui/src/fields.rs (form rows: a label column of fixed width, then the field) | SolidCraft `crates/ui-egui/src/dialogs.rs` | MIT OR Apache-2.0 | | crates/ui-egui/src/fields.rs (form rows: a label column of fixed width, then the field) | SolidCraft `crates/ui-egui/src/dialogs.rs` | MIT OR Apache-2.0 |
| crates/io/src/fs.rs (atomic writes) | SolidCraft `crates/io/src/safe_write.rs` | MIT OR Apache-2.0 | | crates/io/src/fs.rs (atomic writes) | SolidCraft `crates/io/src/safe_write.rs` | MIT OR Apache-2.0 |
| crates/io/src/recovery.rs (recovery folder, entries, locks) | SolidCraft `crates/engine/src/recovery.rs` | MIT OR Apache-2.0 | | crates/io/src/recovery.rs (recovery folder, entries, locks) | SolidCraft `crates/engine/src/recovery.rs` | MIT OR Apache-2.0 |
| crates/engine/src/crash.rs, crates/engine/src/crash_tests.rs (crash reports: panic hook, locked command journal, unclean-exit detection, report folders and limits, replay), apps/fieldcraft-cli/src/crashes.rs, docs/crash-reports.md (structure) | SolidCraft `crates/engine/src/crash.rs`, `crash_tests.rs`, `apps/solidcraft-cli/src/crashes.rs`, `docs/crash-reports.md` | MIT OR Apache-2.0 |
| apps/fieldcraft/src/control_server.rs | SolidCraft `apps/solidcraft/src/control_server.rs` | MIT OR Apache-2.0 | | apps/fieldcraft/src/control_server.rs | SolidCraft `apps/solidcraft/src/control_server.rs` | MIT OR Apache-2.0 |
| crates/mcp/src/ (JSON-RPC framing, MCP lifecycle, tool schema checks, the control-channel backend, base64) | SolidCraft `crates/mcp/src/` | MIT OR Apache-2.0 | | crates/mcp/src/ (JSON-RPC framing, MCP lifecycle, tool schema checks, the control-channel backend, base64) | SolidCraft `crates/mcp/src/` | MIT OR Apache-2.0 |
| crates/io/src/roots.rs (the rules of read and write roots) | VectorCraft's automation roots (docs/mcp.md there) | MIT OR Apache-2.0 | | crates/io/src/roots.rs (the rules of read and write roots) | VectorCraft's automation roots (docs/mcp.md there) | MIT OR Apache-2.0 |
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<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="24" height="24" viewBox="0 0 24 24">
<title>diagnostics.bug_report</title>
<g id="Layer_1" data-name="Layer 1">
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@@ -47,6 +47,7 @@ impl Autosaver {
let bytes = s.file_bytes(None)?; let bytes = s.file_bytes(None)?;
self.slot.write(&bytes, s.path.as_deref(), s.model.nodes().len(), s.model.elements().len())?; self.slot.write(&bytes, s.path.as_deref(), s.model.nodes().len(), s.model.elements().len())?;
self.saved = Some(s.revision()); self.saved = Some(s.revision());
crate::crash::autosaved(s, &self.slot.file());
Ok(true) Ok(true)
} }
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@@ -0,0 +1,381 @@
//! Bug report drafts (Help › Report a Bug, and Report it after a crash): a GitHub new-issue link
//! that fills in the bug form (`.github/ISSUE_TEMPLATE/bug.yml`), and the files to attach.
//!
//! Nothing here sends anything. The user reviews the draft, then their browser opens the issue
//! form, which they submit or not.
//!
//! What a draft holds by default: the version, the OS, what went wrong (the user's words, the
//! last error or the crash's message) and, for a crash, where it happened. The user's home
//! folder is shown as `~`. Only with **Share my session** does it also carry the commands that
//! built the model (the replayable journal, which can name the user's files), and only with
//! **Include the model** as well the model file. A session too long for the link (GitHub
//! refuses long new-issue links) goes out as a file to attach and on the clipboard instead; the
//! model file is always one to attach.
use serde_json::{Value, json};
use crate::crash::without_home;
/// The issue form.
pub const ISSUE_URL: &str = "https://github.com/jyviko/fieldcraft/issues/new";
/// The longest link a draft opens: GitHub refuses new-issue links much past 8 KB.
pub const MAX_URL: usize = 7000;
/// The session file a draft attaches.
pub const SESSION_FILE: &str = "fieldcraft-session.json";
/// The model file a draft attaches.
pub const MODEL_FILE: &str = "model.fieldcraft";
/// Backtrace frames a crash's draft quotes.
const FRAMES: usize = 12;
/// A field's text is cut at this many bytes.
const MAX_FIELD: usize = 3000;
/// What to put in a draft.
#[derive(Clone, Debug, Default)]
pub struct Input {
pub title: String,
/// What happened: the user's words, or the last error.
pub observed: String,
/// A crash report (`crash::read`), when reporting one.
pub crash: Option<Value>,
/// Attach the replayable commands.
pub share_session: bool,
/// The commands (each `{command, params}`) that rebuild the model from `model` (or from an
/// empty model when there is none).
pub commands: Vec<Value>,
/// Attach the model file too (only with `share_session`).
pub include_model: bool,
pub model: Option<Vec<u8>>,
}
/// A file the user attaches to the issue.
#[derive(Clone, Debug, PartialEq)]
pub struct Attachment {
pub name: String,
pub bytes: Vec<u8>,
/// What it is, for the review.
pub what: String,
}
/// A draft ready for review.
#[derive(Clone, Debug, PartialEq)]
pub struct Draft {
pub title: String,
/// The bug form's fields by id (`observed`, `reproduction`, `evidence`, `version`), as the
/// link fills them.
pub fields: Vec<(&'static str, String)>,
/// The link that opens the filled form.
pub url: String,
/// Files to attach (the session when too long for the link, the model).
pub attachments: Vec<Attachment>,
/// Text to put on the clipboard (the session, when it is an attachment).
pub clipboard: Option<String>,
}
impl Draft {
/// The draft as JSON (attachments by name, size and what they are).
pub fn to_json(&self) -> Value {
json!({
"title": self.title,
"fields": self.fields.iter().map(|(k, v)| (k.to_string(), json!(v))).collect::<serde_json::Map<String, Value>>(),
"url": self.url,
"attachments": self.attachments.iter().map(|a| json!({"name": a.name, "bytes": a.bytes.len(), "what": a.what})).collect::<Vec<_>>(),
"clipboard": self.clipboard.as_ref().map(String::len),
})
}
}
/// `v0.5.8 (abc1234), macos aarch64`.
pub fn version_line(version: &str, commit: &str) -> String {
let commit = if commit.is_empty() { String::new() } else { format!(" ({commit})") };
format!("v{version}{commit}, {} {}", std::env::consts::OS, std::env::consts::ARCH)
}
/// Percent-encode `s` for a query value (RFC 3986 unreserved characters stay).
pub fn encode(s: &str) -> String {
let mut out = String::with_capacity(s.len());
for b in s.bytes() {
if b.is_ascii_alphanumeric() || matches!(b, b'-' | b'_' | b'.' | b'~') {
out.push(char::from(b));
} else {
out.push_str(&format!("%{b:02X}"));
}
}
out
}
fn cut(s: &str, n: usize) -> String {
if s.len() <= n {
return s.to_string();
}
let mut end = n;
while !s.is_char_boundary(end) {
end -= 1;
}
format!("{}\n[cut: {} bytes in all]", s.get(..end).unwrap_or_default(), s.len())
}
fn link(title: &str, fields: &[(&'static str, String)]) -> String {
let mut url = format!("{ISSUE_URL}?template=bug.yml&title={}", encode(title));
for (k, v) in fields {
if !v.is_empty() {
url.push_str(&format!("&{k}={}", encode(v)));
}
}
url
}
/// What a crash report says, for the evidence field: its kind, message, place, command (its id;
/// its parameters only with the session) and the top of its backtrace.
fn crash_evidence(report: &Value, share: bool) -> String {
let s = |k: &str| report.get(k).and_then(Value::as_str).unwrap_or("?");
let mut out =
format!("Crash report `{}` ({}), seen {} time(s)\n\n", s("id"), s("kind"), report.get("count").and_then(Value::as_u64).unwrap_or(1));
out.push_str(&format!("Message: {}\nAt: {}\n", without_home(s("message")), without_home(s("location"))));
if let Some(c) = report.get("command").filter(|c| !c.is_null()) {
let id = c.get("command").and_then(Value::as_str).unwrap_or("?");
match c.get("params").filter(|_| share) {
Some(p) => out.push_str(&format!("Command: `{id}` {}\n", without_home(&p.to_string()))),
None => out.push_str(&format!("Command: `{id}`\n")),
}
}
if let Some(a) = report.get("last_activity").and_then(Value::as_str) {
out.push_str(&format!("Last activity: {a}\n"));
}
let frames: Vec<&str> = report.get("backtrace").and_then(Value::as_array).into_iter().flatten().filter_map(Value::as_str).take(FRAMES).collect();
if !frames.is_empty() {
out.push_str("\nBacktrace (top):\n```\n");
for f in frames {
out.push_str(&without_home(f));
out.push('\n');
}
out.push_str("```\n");
}
out
}
/// The draft for `input`, by the [`version_line`] `version`.
pub fn draft(input: &Input, version: &str) -> Draft {
let crash = input.crash.as_ref();
let mut title = input.title.trim().to_string();
if title.is_empty() {
title = match crash.and_then(|c| c.get("kind")).and_then(Value::as_str) {
Some("unclean_exit") => "FieldCraft closed unexpectedly".to_string(),
Some(_) => "Internal error".to_string(),
None => match input.observed.trim().lines().next().filter(|l| !l.is_empty()) {
Some(line) => format!("Bug: {}", line.chars().take(100).collect::<String>()),
None => "Bug report".to_string(),
},
};
if let Some(c) = crash.and_then(|c| c.get("command")).and_then(|c| c.get("command")).and_then(Value::as_str) {
title.push_str(&format!(" in {c}"));
}
}
let title = cut(&without_home(&title), 200);
let mut observed = without_home(input.observed.trim());
if observed.is_empty()
&& let Some(m) = crash.and_then(|c| c.get("message")).and_then(Value::as_str)
{
observed = without_home(m);
}
let observed = cut(&observed, MAX_FIELD);
let share = input.share_session;
let mut evidence = crash.map(|c| crash_evidence(c, share)).unwrap_or_default();
let mut attachments = Vec::new();
let mut clipboard = None;
let mut reproduction = String::new();
// The session: the replayable script, from the attached model when there is one.
let model = input.model.as_ref().filter(|_| share && input.include_model);
let script = share.then(|| {
let mut steps = Vec::new();
if model.is_some() {
steps.push(json!({"command": "file.open", "params": {"path": MODEL_FILE}}));
}
steps.extend(input.commands.iter().cloned());
Value::Array(steps)
});
if let Some(m) = model {
attachments.push(Attachment { name: MODEL_FILE.into(), bytes: m.clone(), what: format!("the model ({} KB)", m.len().div_ceil(1024)) });
}
if let Some(script) = &script {
let n = script.as_array().map_or(0, Vec::len);
reproduction = format!("Replay the attached session ({n} command(s)): `fieldcraft-cli run {SESSION_FILE}`");
if model.is_some() {
reproduction.push_str(&format!(" in a folder holding `{MODEL_FILE}` too"));
} else if crash.is_some_and(|c| c.get("files").and_then(|f| f.get("model")).is_some()) {
reproduction.push_str(" (the crash replays from the model, which is not attached)");
}
reproduction.push('.');
}
let inline = |evidence: &str, script: &Value| {
let text = serde_json::to_string_pretty(script).unwrap_or_default();
format!("{evidence}\nSession ({SESSION_FILE}):\n```json\n{text}\n```\n")
};
let fields = |evidence: String| {
vec![("observed", observed.clone()), ("reproduction", reproduction.clone()), ("evidence", evidence), ("version", version.to_string())]
};
// The session in the link when it fits, else a file to attach (also on the clipboard).
let mut url = String::new();
if let Some(script) = &script {
let candidate = fields(inline(&evidence, script));
let u = link(&title, &candidate);
if u.len() <= MAX_URL {
evidence = inline(&evidence, script);
url = u;
} else {
let text = serde_json::to_string_pretty(script).unwrap_or_default();
evidence.push_str(&format!(
"\nThe session is too long for this form: FieldCraft saved it as `{SESSION_FILE}` and copied it to the clipboard. Attach the file here (drag it in) or paste it.\n"
));
attachments.insert(0, Attachment { name: SESSION_FILE.into(), bytes: text.clone().into_bytes(), what: "the session's commands".into() });
clipboard = Some(text);
}
}
if model.is_some() {
evidence.push_str(&format!("\nThe model is attached as `{MODEL_FILE}` (drag it in from the folder FieldCraft saved it to).\n"));
}
if url.is_empty() || model.is_some() {
let mut f = fields(evidence.clone());
url = link(&title, &f);
// Still too long (a very long message): cut the longest field until it fits.
while url.len() > MAX_URL {
let Some((i, len)) = f.iter().enumerate().map(|(i, (_, v))| (i, v.len())).max_by_key(|(_, l)| *l) else { break };
if len < 200 {
break;
}
if let Some((_, v)) = f.get_mut(i) {
*v = cut(v, len.saturating_sub(url.len() - MAX_URL + 64).min(len / 2 + 1));
}
url = link(&title, &f);
}
evidence = f.get(2).map(|(_, v)| v.clone()).unwrap_or_default();
}
let fields = fields(evidence);
// The fields as the link carries them (a cut field included).
let fields = if url == link(&title, &fields) { fields } else { decode_fields(&url) };
Draft { title, fields, url, attachments, clipboard }
}
/// The fields a link carries (for the review, when a field had to be cut).
fn decode_fields(url: &str) -> Vec<(&'static str, String)> {
let query = url.split_once('?').map_or("", |(_, q)| q);
["observed", "reproduction", "evidence", "version"]
.into_iter()
.map(|k| {
let v = query.split('&').find_map(|kv| kv.strip_prefix(k).and_then(|r| r.strip_prefix('='))).unwrap_or_default();
(k, decode(v))
})
.collect()
}
fn decode(s: &str) -> String {
let b = s.as_bytes();
let mut out = Vec::with_capacity(b.len());
let mut i = 0;
while let Some(&c) = b.get(i) {
let hex = b.get(i + 1..i + 3).and_then(|h| std::str::from_utf8(h).ok()).and_then(|h| u8::from_str_radix(h, 16).ok());
match (c, hex) {
(b'%', Some(v)) => {
out.push(v);
i += 3;
}
_ => {
out.push(c);
i += 1;
}
}
}
String::from_utf8_lossy(&out).into_owned()
}
#[cfg(test)]
mod tests {
use super::*;
fn home() -> String {
std::env::var("HOME").or_else(|_| std::env::var("USERPROFILE")).unwrap_or_else(|_| "/home/someone".into())
}
fn crash() -> Value {
json!({
"id": "20261014-101500-00000000deadbeef", "kind": "command_panic", "count": 2,
"message": format!("index out of bounds in {}/model.fieldcraft", home()),
"location": "crates/mesh/src/tet.rs:42",
"command": {"command": "mesh.tet.generate", "params": {"body": "Plate", "path": format!("{}/secret/plate.step", home())}},
"backtrace": ["fieldcraft_mesh::tet::insert (crates/mesh/src/tet.rs:42)"],
"files": {"model": "model.fieldcraft", "replay": "replay.json"},
})
}
#[test]
fn without_sharing_a_draft_names_no_paths_commands_or_model() {
let input = Input {
observed: format!("cannot open {}/parts/bracket.solidcraft", home()),
crash: Some(crash()),
commands: vec![json!({"command": "geometry.open", "params": {"path": format!("{}/parts/bracket.solidcraft", home())}})],
model: Some(b"model bytes".to_vec()),
include_model: true,
..Default::default()
};
let d = draft(&input, "v1.2.3, testos x");
assert!(d.url.starts_with("https://github.com/jyviko/fieldcraft/issues/new?template=bug.yml&title="), "{}", d.url);
assert!(d.attachments.is_empty() && d.clipboard.is_none(), "nothing attached without Share my session");
let all = format!("{} {:?} {}", d.title, d.fields, decode(&d.url));
assert!(!all.contains(&home()), "no home folder: {all}");
assert!(!all.contains("secret") && !all.contains("geometry.open"), "no parameters or commands: {all}");
assert!(all.contains("~/parts/bracket.solidcraft"), "the error, its home shown as ~: {all}");
assert!(all.contains("mesh.tet.generate") && all.contains("tet.rs:42") && all.contains("v1.2.3, testos x"), "{all}");
assert_eq!(d.title, "Internal error in mesh.tet.generate");
assert_eq!(decode_fields(&d.url), d.fields, "the review shows what the link carries");
}
#[test]
fn a_short_session_goes_in_the_link() {
let input = Input {
title: "Solve fails".into(),
share_session: true,
commands: vec![json!({"command": "file.sample", "params": {"name": "cantilever"}}), json!({"command": "solve.run", "params": {}})],
..Default::default()
};
let d = draft(&input, "v1");
assert!(d.attachments.is_empty() && d.clipboard.is_none());
let evidence = &d.fields.iter().find(|(k, _)| *k == "evidence").unwrap().1;
assert!(evidence.contains("\"command\": \"solve.run\""), "{evidence}");
assert!(d.url.len() <= MAX_URL);
assert!(decode(&d.url).contains("file.sample"));
}
#[test]
fn a_long_session_and_the_model_are_attachments() {
let commands: Vec<Value> = (0..400).map(|i| json!({"command": "mesh.node.add", "params": {"label": i + 1, "xyz": [i, 0, 0]}})).collect();
let input =
Input { share_session: true, include_model: true, commands, model: Some(vec![7; 3000]), crash: Some(crash()), ..Default::default() };
let d = draft(&input, "v1");
assert!(d.url.len() <= MAX_URL, "{}", d.url.len());
let names: Vec<&str> = d.attachments.iter().map(|a| a.name.as_str()).collect();
assert_eq!(names, [SESSION_FILE, MODEL_FILE]);
let session: Value = serde_json::from_slice(&d.attachments[0].bytes).unwrap();
assert_eq!(session[0], json!({"command": "file.open", "params": {"path": MODEL_FILE}}), "the replay opens the attached model");
assert_eq!(session.as_array().unwrap().len(), 401);
assert_eq!(d.clipboard.as_deref().map(str::as_bytes), Some(d.attachments[0].bytes.as_slice()));
let text = decode(&d.url);
assert!(text.contains("too long for this form") && text.contains(MODEL_FILE) && !text.contains("\"label\": 399"), "{text}");
// With the session shared, the crash's command parameters are shown (home as ~).
assert!(text.contains("~/secret/plate.step"), "{text}");
}
#[test]
fn a_huge_message_is_cut_to_fit_the_link() {
let input = Input { observed: "é".repeat(20_000), ..Default::default() };
let d = draft(&input, "v1");
assert!(d.url.len() <= MAX_URL, "{}", d.url.len());
assert!(d.fields[0].1.contains("[cut:"));
assert_eq!(decode_fields(&d.url), d.fields);
}
#[test]
fn encoding_round_trips() {
let s = "a b&c=d/é\n```json";
assert_eq!(decode(&encode(s)), s);
assert_eq!(encode("a b&"), "a%20b%26");
}
}
+8
View File
@@ -591,6 +591,14 @@ pub static CATALOGUE: &[Capability] = &[
), ),
ready("edit.undo", "Undo", Tools, "History", "Undo the last command that changed the model"), ready("edit.undo", "Undo", Tools, "History", "Undo the last command that changed the model"),
ready("edit.redo", "Redo", Tools, "History", "Redo the command undone last"), ready("edit.redo", "Redo", Tools, "History", "Redo the command undone last"),
ready_more(
"diagnostics.bug_report",
"Report a Bug",
Tools,
"Help",
"Draft a GitHub bug report with the version, the OS and the last error; you review it, and nothing is sent until you submit it",
&["diagnostics.crash_reports", "diagnostics.crash_report", "diagnostics.crash_test"],
),
]; ];
/// The catalogue entry with this id. /// The catalogue entry with this id.
+133
View File
@@ -0,0 +1,133 @@
//! Crash reports and bug report drafts (docs/crash-reports.md): list and read the reports the
//! desktop app wrote, draft a bug report, and (with `FIELDCRAFT_CRASH_TEST=1`) crash on purpose
//! to check that reporting works.
use std::path::PathBuf;
use fieldcraft_io::roots::Access;
use serde_json::{Value, json};
use super::{file_param, opt, req};
use crate::{CommandKind, CommandSpec, EngineError, Result, Session, bug_report, crash};
pub const CRASH_REPORTS: CommandSpec = CommandSpec {
id: "diagnostics.crash_reports",
label: "Crash Reports",
params: r#"{"limit"?: 20, "dir"?: "…"} — the crash reports the desktop app wrote on this computer, newest first: id, kind (command_panic, recovered_panic, panic, unclean_exit), time, message, command, count, version, path and whether it can be replayed (default folder: FIELDCRAFT_CRASH_DIR, a temporary folder in runs driven by automation, else the per-user data folder)"#,
form: Some(super::forms::CRASH_REPORTS),
kind: CommandKind::Session,
requires: &[],
run: crash_reports,
};
pub const CRASH_REPORT: CommandSpec = CommandSpec {
id: "diagnostics.crash_report",
label: "Crash Report",
params: r#"{"id": "20261014-101500-…", "dir"?: "…"} — one crash report: what happened, where, the backtrace, the command and recent commands, and the paths of its model, replay and log files"#,
form: Some(super::forms::CRASH_REPORT),
kind: CommandKind::Session,
requires: &[],
run: crash_report,
};
pub const BUG_REPORT: CommandSpec = CommandSpec {
id: "diagnostics.bug_report",
label: "Report a Bug",
params: r#"{"title"?: "…", "observed"?: "what happened", "crash"?: "<crash report id>", "share_session"?: false, "include_model"?: false} — drafts a GitHub bug report: the issue link (the bug form filled with the version, the OS, what happened and, for a crash, where), and the files to attach. Only with share_session does it carry the model's commands, and only with include_model as well the model file. Nothing is sent: the desktop app's Help › Report a Bug shows the draft and opens the link when the user asks"#,
form: Some(super::forms::BUG_REPORT),
kind: CommandKind::Session,
requires: &[],
run: bug_report_draft,
};
pub const CRASH_TEST: CommandSpec = CommandSpec {
id: "diagnostics.crash_test",
label: "Crash Test",
params: r#"{"mode": "panic|recovered|abort"} — crashes on purpose to check that crash reports work (only with FIELDCRAFT_CRASH_TEST=1): panic, an internal error in this command; recovered, one caught inside it; abort, the app ends at once (reported at its next start)"#,
form: Some(super::forms::CRASH_TEST),
kind: CommandKind::Session,
requires: &[],
run: crash_test,
};
fn crash_dir(s: &Session, p: &Value) -> Result<PathBuf> {
if p.get("dir").is_some() {
return Ok(PathBuf::from(file_param(s, p, "dir", Access::Read)?));
}
crash::default_dir().ok_or_else(|| EngineError::Params("no crash folder: set FIELDCRAFT_CRASH_DIR or give `dir`".into()))
}
fn crash_reports(s: &mut Session, p: &Value) -> Result<Value> {
let dir = crash_dir(s, p)?;
let limit = opt::<usize>(p, "limit")?.unwrap_or(crash::MAX_REPORTS);
let mut reports = crash::list(&dir);
reports.truncate(limit);
Ok(json!({"dir": dir.to_string_lossy(), "reports": reports}))
}
fn crash_report(s: &mut Session, p: &Value) -> Result<Value> {
let dir = crash_dir(s, p)?;
let id = req::<String>(p, "id")?;
crash::read(&dir, &id).map_err(EngineError::Params)
}
/// The draft input for `p` from the session: its commands and model (when shared), or a crash
/// report's replay and model.
pub fn bug_report_input(s: &Session, p: &Value) -> Result<bug_report::Input> {
let share = opt::<bool>(p, "share_session")?.unwrap_or(false);
let include_model = opt::<bool>(p, "include_model")?.unwrap_or(false);
let mut input = bug_report::Input {
title: opt::<String>(p, "title")?.unwrap_or_default(),
observed: opt::<String>(p, "observed")?.unwrap_or_default(),
share_session: share,
include_model,
..Default::default()
};
match opt::<String>(p, "crash")? {
Some(id) => {
let report = crash::read(&crash_dir(s, p)?, &id).map_err(EngineError::Params)?;
if share {
let read = |k: &str| {
report
.get(k)
.and_then(Value::as_str)
.and_then(|f| fieldcraft_io::fs::read_capped(std::path::Path::new(f), crash::MAX_MODEL_BYTES as u64).ok())
};
let replay: Value = read("replay_path").and_then(|b| serde_json::from_slice(&b).ok()).unwrap_or(Value::Null);
input.commands = replay.get("commands").and_then(Value::as_array).cloned().unwrap_or_default();
input.model = if include_model { read("model_path") } else { None };
}
input.crash = Some(report);
}
None if share => {
input.commands = s.journal.iter().map(|(command, params)| json!({"command": command, "params": params})).collect();
input.model = if include_model { Some(s.file_bytes(None)?) } else { None };
}
None => {}
}
Ok(input)
}
fn bug_report_draft(s: &mut Session, p: &Value) -> Result<Value> {
let input = bug_report_input(s, p)?;
Ok(bug_report::draft(&input, &crash::Build::current().version_line()).to_json())
}
// The one deliberate panic and abort: they prove that crash reports work, and run only when
// asked for with FIELDCRAFT_CRASH_TEST=1.
#[allow(clippy::panic)]
fn crash_test(_: &mut Session, p: &Value) -> Result<Value> {
let mode = req::<String>(p, "mode")?;
if std::env::var_os("FIELDCRAFT_CRASH_TEST").is_none_or(|v| v != "1") {
return Err(EngineError::Params("the crash test runs only with FIELDCRAFT_CRASH_TEST=1".into()));
}
match mode.as_str() {
"panic" => std::panic::panic_any(String::from("crash test: an internal error in a command")),
"recovered" => {
let caught = std::panic::catch_unwind(|| std::panic::panic_any(String::from("crash test: an internal error caught inside a command")));
Ok(json!({"caught": caught.is_err()}))
}
"abort" => std::process::abort(),
_ => Err(EngineError::invalid("mode", "must be panic, recovered or abort")),
}
}
+26 -1
View File
@@ -1433,6 +1433,23 @@ pub const FILE_SAVE: &[Field] = &[path("path", "File", true).help("Where to save
pub const FILE_SAVE_AS: &[Field] = &[path("path", "File", true).help("The file to save to.").req()]; pub const FILE_SAVE_AS: &[Field] = &[path("path", "File", true).help("The file to save to.").req()];
pub const RECOVERY_LIST: &[Field] = pub const RECOVERY_LIST: &[Field] =
&[path("dir", "Folder", false).help("The recovery folder; the default one when empty.").hint("the recovery folder")]; &[path("dir", "Folder", false).help("The recovery folder; the default one when empty.").hint("the recovery folder")];
pub const CRASH_REPORTS: &[Field] = &[
int("limit", "Limit", 1, 1000).help("At most this many reports, newest first.").hint("20"),
path("dir", "Folder", false).help("The crash folder; the default one when empty.").hint("the crash folder"),
];
pub const CRASH_REPORT: &[Field] = &[
text("id", "Report").help("The crash report to show.").req(),
path("dir", "Folder", false).help("The crash folder; the default one when empty.").hint("the crash folder"),
];
pub const BUG_REPORT: &[Field] = &[
text("title", "Title").help("The issue's title; one is made up when empty."),
text("observed", "What happened").help("What went wrong; the last error when empty."),
text("crash", "Crash report").help("A crash report to report (its id)."),
flag("share_session", "Share my session").help("Attach the commands that built the model (they can name your files).").def("false"),
flag("include_model", "Include the model").help("Attach the model file too (with Share my session).").def("false"),
];
pub const CRASH_TEST: &[Field] =
&[choice("mode", "Mode", &[("panic", "Panic"), ("recovered", "Recovered panic"), ("abort", "Abort")]).help("How to crash.").req()];
pub const RECOVER: &[Field] = &[ pub const RECOVER: &[Field] = &[
text("id", "Autosave").help("The autosave to recover.").req(), text("id", "Autosave").help("The autosave to recover.").req(),
path("dir", "Folder", false).help("The recovery folder; the default one when empty.").hint("the recovery folder"), path("dir", "Folder", false).help("The recovery folder; the default one when empty.").hint("the recovery folder"),
@@ -1697,7 +1714,15 @@ mod tests {
} }
} }
const STATE: &[&str] = &["open a design first", "`boundary_conditions` or `loads`", "give one of", "is not an explicit", "has a result"]; const STATE: &[&str] = &[
"open a design first",
"`boundary_conditions` or `loads`",
"give one of",
"is not an explicit",
"has a result",
"no crash report",
"FIELDCRAFT_CRASH_TEST",
];
/// Fill top-level required names (a fresh one) and references (the first existing item). /// Fill top-level required names (a fresh one) and references (the first existing item).
fn fill_required(s: &Session, form: &[Field], p: &mut Value) { fn fill_required(s: &Session, form: &[Field], p: &mut Value) {
+5
View File
@@ -6,6 +6,7 @@ mod contact;
pub(crate) mod datum; pub(crate) mod datum;
pub(crate) mod deck; pub(crate) mod deck;
pub(crate) mod define; pub(crate) mod define;
pub mod diagnostics;
mod edit; mod edit;
pub(crate) mod file; pub(crate) mod file;
pub(crate) mod forms; pub(crate) mod forms;
@@ -153,6 +154,10 @@ pub static ALL: &[CommandSpec] = &[
results::FRAME, results::FRAME,
results::REACTIONS, results::REACTIONS,
results::CLEAR, results::CLEAR,
diagnostics::CRASH_REPORTS,
diagnostics::CRASH_REPORT,
diagnostics::BUG_REPORT,
diagnostics::CRASH_TEST,
]; ];
/// The problem with required parameter `key`: [`ProblemKind::Required`] when it is left out, /// The problem with required parameter `key`: [`ProblemKind::Required`] when it is left out,
File diff suppressed because it is too large. Load diff
+277
View File
@@ -0,0 +1,277 @@
use super::*;
use crate::Session;
fn fresh_dir(name: &str) -> PathBuf {
let d = std::env::temp_dir().join(format!("fieldcraft-crash-test-{name}-{}", std::process::id()));
let _ = fs::remove_dir_all(&d);
d
}
fn build() -> Build {
Build { version: "9.9.9", commit: "abc1234" }
}
fn node(label: u32) -> Value {
json!({"label": label, "xyz": [f64::from(label), 0.0, 0.0]})
}
/// The child half of the process tests: does nothing unless a parent asks, then installs the
/// hook and crashes the way `FIELDCRAFT_CRASH_CHILD` says.
#[test]
fn child() {
let (Some(dir), Ok(mode)) = (std::env::var_os("FIELDCRAFT_CRASH_CHILD_DIR"), std::env::var("FIELDCRAFT_CRASH_CHILD")) else {
return;
};
let dir = PathBuf::from(dir);
if mode == "replay" {
// Replay the one report (in a process of its own: the replay replaces the panic hook).
let id = list(&dir)[0].id.clone();
let r = replay(&read(&dir, &id).unwrap(), &std::env::temp_dir()).unwrap();
let steps: Vec<_> = r.steps.iter().map(|(c, r)| json!({"command": c, "ok": r.is_ok()})).collect();
println!("REPLAY {}", json!({"reproduced": r.reproduced, "nodes": r.session.model.nodes().len(), "steps": steps}));
return;
}
let fresh = install(dir.clone(), build());
println!("FRESH {}", serde_json::to_string(&fresh).unwrap());
if mode == "idle" {
end_session();
return;
}
let mut s = Session { crash_journal: true, ..Default::default() };
s.execute("mesh.node.add", &node(1)).unwrap();
s.execute("mesh.node.add", &node(2)).unwrap();
// Commands that only read are not kept.
for _ in 0..50 {
s.execute("model.info", &json!({})).unwrap();
}
match mode.as_str() {
"command" => {
for _ in 0..3 {
let r = s.execute("diagnostics.crash_test", &json!({"mode": "panic"}));
assert!(matches!(r, Err(crate::EngineError::Internal { .. })), "{r:?}");
}
assert_eq!(s.model.nodes().len(), 2, "the model is unchanged");
}
"recovered" => {
assert_eq!(s.execute("diagnostics.crash_test", &json!({"mode": "recovered"})).unwrap()["caught"], true);
}
"thread" => {
let r = std::thread::Builder::new()
.name("worker".into())
.spawn(|| std::panic::panic_any(String::from("worker thread 42 failed")))
.unwrap()
.join();
assert!(r.is_err());
}
"abort" => {
activity("control ui.capture");
let _ = s.execute("diagnostics.crash_test", &json!({"mode": "abort"}));
}
"autosave" => {
// The journal starts again from each autosave.
let mut a = crate::autosave::Autosaver::new(&dir.join("recovery")).unwrap();
assert!(a.save(&s).unwrap());
s.execute("mesh.node.add", &node(3)).unwrap();
activity("control ui.capture");
std::process::abort();
}
_ => {}
}
end_session();
}
/// Run [`child`] in a new process; returns its stdout and whether it succeeded.
fn run_child(dir: &Path, mode: &str) -> (String, bool) {
let out = std::process::Command::new(std::env::current_exe().unwrap())
.args(["--exact", "crash::tests::child", "--test-threads=1", "--nocapture"])
.env("FIELDCRAFT_CRASH_CHILD_DIR", dir)
.env("FIELDCRAFT_CRASH_CHILD", mode)
.env("FIELDCRAFT_CRASH_TEST", "1")
.env("RUST_BACKTRACE", "0")
.output()
.unwrap();
(String::from_utf8_lossy(&out.stdout).into_owned(), out.status.success())
}
fn printed(out: &str, tag: &str) -> Value {
let line = out.lines().find_map(|l| l.split_once(tag).map(|(_, rest)| rest)).unwrap_or_else(|| panic!("no {tag} in {out}"));
serde_json::from_str(line.trim()).unwrap()
}
fn only_report(dir: &Path) -> (Summary, Value) {
let all = list(dir);
assert_eq!(all.len(), 1, "{all:?}");
let s = all.into_iter().next().unwrap();
let v = read(dir, &s.id).unwrap();
(s, v)
}
fn nodes_in(model: &str) -> usize {
let mut s = Session::default();
s.execute("file.open", &json!({"path": model})).unwrap();
s.model.nodes().len()
}
#[test]
fn a_command_panic_is_reported_once_with_the_model_and_the_command_and_replays() {
let d = fresh_dir("command");
let (_, ok) = run_child(&d, "command");
assert!(ok, "the panics were caught");
let (s, v) = only_report(&d);
assert_eq!(s.kind, "command_panic");
assert_eq!(s.count, 3, "repeats are counted, not written again");
assert_eq!(s.command.as_deref(), Some("diagnostics.crash_test"));
assert!(s.replayable);
assert_eq!(v["format"], FORMAT);
assert_eq!(v["app"]["version"], "9.9.9");
assert_eq!(v["system"]["os"], std::env::consts::OS);
assert!(v["message"].as_str().unwrap().contains("an internal error in a command"), "{v}");
assert!(v["location"].as_str().unwrap().contains("diagnostics.rs"), "{v}");
let bt = v["backtrace"].as_array().unwrap();
assert!(bt.iter().any(|f| f.as_str().unwrap().contains("crash_test")), "{bt:?}");
assert!(!bt.iter().any(|f| f.as_str().unwrap().contains("crash::hook")), "the hook's own frames are dropped: {bt:?}");
assert_eq!(v["recent_commands"][0]["command"], "mesh.node.add");
assert_eq!(v["recent_commands"].as_array().unwrap().len(), 3, "read-only commands are not kept: {v}");
assert_eq!(v["recent_commands"][2]["ok"], false);
// The model from before the command, and the command: together they reproduce the crash.
assert_eq!(nodes_in(v["model_path"].as_str().unwrap()), 2);
let replay: Value = serde_json::from_slice(&fs::read(v["replay_path"].as_str().unwrap()).unwrap()).unwrap();
assert_eq!(replay["commands"], json!([{"command": "diagnostics.crash_test", "params": {"mode": "panic"}}]));
assert_eq!(v["reproduce"], format!("fieldcraft-cli crashes replay {}", s.id));
assert!(fs::read_dir(d.join("sessions")).unwrap().next().is_none(), "a clean exit leaves no journal");
// The replay reaches the same internal error, from the same model.
let (out, ok) = run_child(&d, "replay");
assert!(ok, "{out}");
let r = printed(&out, "REPLAY ");
assert_eq!(r["reproduced"], true, "{r}");
assert_eq!(r["nodes"], 2, "the replay ends in the state the crash left: {r}");
let _ = fs::remove_dir_all(&d);
}
#[test]
fn a_panic_caught_inside_a_command_is_reported_as_recovered() {
let d = fresh_dir("recovered");
let (_, ok) = run_child(&d, "recovered");
assert!(ok);
let (s, v) = only_report(&d);
assert_eq!(s.kind, "recovered_panic");
assert!(!s.replayable, "the command did not fail");
assert!(v["message"].as_str().unwrap().contains("caught inside"), "{v}");
let _ = fs::remove_dir_all(&d);
}
#[test]
fn a_panic_outside_commands_is_reported_from_the_journal() {
let d = fresh_dir("thread");
let (_, ok) = run_child(&d, "thread");
assert!(ok);
let (s, v) = only_report(&d);
assert_eq!(s.kind, "panic");
assert_eq!(v["thread"], "worker");
assert!(s.message.contains("worker thread 42 failed"));
// The journal's commands from a new model rebuild it.
let replay: Value = serde_json::from_slice(&fs::read(v["replay_path"].as_str().unwrap()).unwrap()).unwrap();
assert_eq!(replay["commands"].as_array().unwrap().len(), 2, "{replay}");
// A panic the hook reported is no unclean exit at the next start.
let (out, _) = run_child(&d, "abort");
let fresh = printed(&out, "FRESH ");
assert_eq!(fresh.as_array().unwrap().len(), 1, "the earlier report, seen once: {fresh}");
let _ = fs::remove_dir_all(&d);
}
#[test]
fn an_unclean_exit_is_found_at_the_next_start_with_its_commands() {
let d = fresh_dir("abort");
let (_, ok) = run_child(&d, "abort");
assert!(!ok, "the child aborted");
assert!(list(&d).is_empty(), "nothing wrote a report while it died");
assert_eq!(fs::read_dir(d.join("sessions")).unwrap().count(), 1, "its journal is left behind");
let (out, ok) = run_child(&d, "idle");
assert!(ok);
let fresh = printed(&out, "FRESH ");
assert_eq!(fresh[0]["kind"], "unclean_exit", "{fresh}");
let (s, v) = only_report(&d);
assert_eq!(s.command.as_deref(), Some("diagnostics.crash_test"), "the command in flight");
assert!(s.message.contains("ended without a clean exit while running `diagnostics.crash_test`"), "{}", s.message);
assert_eq!(v["last_activity"], "control ui.capture");
let replay: Value = serde_json::from_slice(&fs::read(v["replay_path"].as_str().unwrap()).unwrap()).unwrap();
let ids: Vec<&str> = replay["commands"].as_array().unwrap().iter().map(|c| c["command"].as_str().unwrap()).collect();
assert_eq!(ids, ["mesh.node.add", "mesh.node.add", "diagnostics.crash_test"]);
assert!(fs::read_dir(d.join("sessions")).unwrap().next().is_none(), "the dead journal is gone");
// Told once: the next start offers nothing new.
let (out, _) = run_child(&d, "idle");
assert_eq!(printed(&out, "FRESH "), json!([]));
let _ = fs::remove_dir_all(&d);
}
#[test]
fn an_unclean_exit_after_an_autosave_starts_from_the_autosave() {
let d = fresh_dir("autosave");
let (_, ok) = run_child(&d, "autosave");
assert!(!ok);
run_child(&d, "idle");
let (s, v) = only_report(&d);
assert_eq!(s.kind, "unclean_exit");
assert!(s.message.contains("between commands (last: control ui.capture)"), "{}", s.message);
assert_eq!(nodes_in(v["model_path"].as_str().unwrap()), 2, "the autosaved model");
let replay: Value = serde_json::from_slice(&fs::read(v["replay_path"].as_str().unwrap()).unwrap()).unwrap();
assert_eq!(replay["commands"], json!([{"command": "mesh.node.add", "params": node(3)}]), "only what came after the autosave");
let (out, ok) = run_child(&d, "replay");
assert!(ok, "{out}");
assert_eq!(printed(&out, "REPLAY ")["nodes"], 3, "the replay rebuilds the model the app had");
let _ = fs::remove_dir_all(&d);
}
#[test]
fn journals_parse_and_hostile_ids_are_refused() {
let text = [
r#"{"start":"x","pid":1,"version":"1"}"#,
r#"{"base":"new"}"#,
r#"{"run":"a","params":{}}"#,
r#"{"ok":true}"#,
r#"{"activity":"control ui.capture"}"#,
r#"{"run":"b","params":{"x":1}}"#,
r#"{"ok":false,"error":"no"}"#,
"not json",
r#"{"run":"c","params":{}}"#,
]
.join("\n");
let j = parse_journal(&text);
assert_eq!(j.replay, vec![json!({"command": "a", "params": {}})]);
assert_eq!(j.recent.len(), 2);
assert_eq!(j.in_flight, Some(json!({"command": "c", "params": {}})));
assert_eq!(j.activity.as_deref(), Some("control ui.capture"));
assert!(j.complete && !j.reported);
let d = fresh_dir("hostile");
fs::create_dir_all(&d).unwrap();
for id in ["", "../x", "a/b", &"f".repeat(65)] {
assert!(read(&d, id).is_err(), "{id}");
assert_eq!(clear(&d, Some(id)), 0);
}
let _ = fs::remove_dir_all(&d);
}
#[test]
fn signatures_ignore_numbers() {
assert_eq!(signature("a.rs:1", "node 12 of 400"), signature("a.rs:1", "node 7 of 3"));
assert_ne!(signature("a.rs:1", "node 12"), signature("a.rs:2", "node 12"));
assert_eq!(utc(0), "1970-01-01T00:00:00Z");
assert_eq!(stamp(1_760_436_000), "20251014-100000");
}
#[test]
fn reports_are_pruned_to_the_limits() {
let d = fresh_dir("prune");
for i in 0..(MAX_REPORTS + 5) {
let id = format!("20261014-1000{:02}-{:016x}", i % 60, i + 1);
fs::create_dir_all(d.join(&id)).unwrap();
let kind = if i == MAX_REPORTS + 4 { "recovered_panic" } else { "panic" };
fs::write(d.join(&id).join("report.json"), json!({"kind": kind, "message": "m"}).to_string()).unwrap();
}
prune(&d, now());
let left = list(&d);
assert_eq!(left.len(), MAX_REPORTS);
assert!(left.iter().all(|r| r.kind == "panic"), "recovered ones go first");
assert_eq!(clear(&d, None), MAX_REPORTS);
let _ = fs::remove_dir_all(&d);
}
+11
View File
@@ -13,8 +13,11 @@
#![forbid(unsafe_code)] #![forbid(unsafe_code)]
pub mod autosave; pub mod autosave;
pub mod bug_report;
pub mod catalogue; pub mod catalogue;
pub mod cmd; pub mod cmd;
pub mod crash;
pub mod logfile;
pub use cmd::analytic_surfaces; pub use cmd::analytic_surfaces;
pub use cmd::replace::{MESHERS, Replacement, replacement}; pub use cmd::replace::{MESHERS, Replacement, replacement};
@@ -244,6 +247,9 @@ pub struct Session {
pub view: fieldcraft_io::View, pub view: fieldcraft_io::View,
/// The view as last saved (or opened): a change to it is unsaved too. /// The view as last saved (or opened): a change to it is unsaved too.
saved_view: fieldcraft_io::View, saved_view: fieldcraft_io::View,
/// This is the app's own model: its top-level commands go into the crash journal
/// ([`crash`]), so an unclean exit can be replayed. Off for scratch sessions and tests.
pub crash_journal: bool,
} }
impl Session { impl Session {
@@ -256,6 +262,9 @@ impl Session {
// Session commands (open, save, undo, redo) change the session only in their last step, // Session commands (open, save, undo, redo) change the session only in their last step,
// after everything that can fail, so they need no copy of the model to restore. // after everything that can fail, so they need no copy of the model to restore.
let before = (spec.kind == CommandKind::Model).then(|| (self.snapshot(), self.document())); let before = (spec.kind == CommandKind::Model).then(|| (self.snapshot(), self.document()));
let scope = crash::Scope::enter();
let journaled = crash::command_begin(&scope, self, id, params);
let (revision, opened) = (self.revision, self.opened);
let outcome = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| (spec.run)(self, params))); let outcome = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| (spec.run)(self, params)));
let result = match outcome { let result = match outcome {
Ok(Err(EngineError::Param(p))) => Err(EngineError::Param(match spec.form { Ok(Err(EngineError::Param(p))) => Err(EngineError::Param(match spec.form {
@@ -285,6 +294,8 @@ impl Session {
cmd::view::forget_missing(self); cmd::view::forget_missing(self);
} }
} }
drop(scope);
crash::command_done(self, journaled, self.revision != revision || self.opened != opened, id, params, &result);
result result
} }
+180
View File
@@ -0,0 +1,180 @@
//! The log file: what the desktop app logs (through the `log` facade) goes to
//! `<data folder>/logs/fieldcraft.log`, one line per record:
//! `2026-10-14T10:03:22Z WARN [4242] fieldcraft_engine: message`. Warnings and errors also go to
//! the standard error stream.
//!
//! Bounded: past [`MAX_BYTES`] the file becomes `fieldcraft.log.1` (replacing the one before) and
//! a new one starts, so the logs never take more than twice that. A record is cut at
//! [`MAX_LINE`] bytes. The process id on every line lets a crash report take only the lines of
//! the run that crashed ([`tail`]), even when two apps share the file.
//!
//! Nothing is installed in tests, the CLI or the web build (which logs to the browser console).
use std::fs::{self, File, OpenOptions};
use std::io::{Read, Seek, SeekFrom, Write};
use std::path::{Path, PathBuf};
use std::sync::{Mutex, OnceLock};
/// The log file's name.
pub const FILE_NAME: &str = "fieldcraft.log";
/// The log file's size limit.
pub const MAX_BYTES: u64 = 2 << 20;
/// A record's size limit.
pub const MAX_LINE: usize = 4 << 10;
struct FileLogger {
path: PathBuf,
level: log::LevelFilter,
out: Mutex<Out>,
}
struct Out {
file: Option<File>,
bytes: u64,
}
static LOGGER: OnceLock<FileLogger> = OnceLock::new();
/// Send the `log` records at `level` and above to the log file in `dir` (created if needed).
/// Returns the file's path. Call once; later calls change nothing.
pub fn install(dir: &Path, level: log::LevelFilter) -> Result<PathBuf, String> {
fs::create_dir_all(dir).map_err(|e| format!("{}: {e}", dir.display()))?;
let path = dir.join(FILE_NAME);
let file = open(&path).map_err(|e| format!("{}: {e}", path.display()))?;
let bytes = file.metadata().map_or(0, |m| m.len());
let logger = FileLogger { path: path.clone(), level, out: Mutex::new(Out { file: Some(file), bytes }) };
if LOGGER.set(logger).is_err() {
return Err("a log file is already installed".into());
}
if let Some(l) = LOGGER.get() {
log::set_logger(l).map_err(|e| e.to_string())?;
log::set_max_level(level);
}
Ok(path)
}
fn open(path: &Path) -> std::io::Result<File> {
OpenOptions::new().create(true).append(true).open(path)
}
/// The log file, once [`install`]ed.
pub fn path() -> Option<&'static Path> {
LOGGER.get().map(|l| l.path.as_path())
}
/// The last `max` bytes of the log file's lines written by process `pid` (every line when
/// `None`), from the rotated file too when the current one is short. `None` without a log file.
pub fn tail(pid: Option<u32>, max: usize) -> Option<String> {
let path = path().map(Path::to_path_buf).or_else(default_path)?;
Some(tail_of(&path, pid, max))
}
/// [`tail`] of the log file at `path`.
fn tail_of(path: &Path, pid: Option<u32>, max: usize) -> String {
let mut text = String::new();
for p in [rotated(path), path.to_path_buf()] {
// The whole file (it is bounded): another process's lines may come between.
text.push_str(&read_end(&p, MAX_BYTES));
}
let mark = pid.map(|p| format!(" [{p}] "));
let mut lines: Vec<&str> = text.lines().filter(|l| mark.as_deref().is_none_or(|m| l.contains(m))).collect();
let mut total = 0;
let mut keep = lines.len();
for (i, l) in lines.iter().enumerate().rev() {
total += l.len() + 1;
if total > max {
break;
}
keep = i;
}
lines.drain(..keep);
lines.join("\n")
}
/// The log file of this computer's app (for a crash report written before [`install`]).
fn default_path() -> Option<PathBuf> {
fieldcraft_io::recovery::data_dir().map(|d| d.join("logs").join(FILE_NAME))
}
/// The file the log rotates into.
pub fn rotated(path: &Path) -> PathBuf {
let mut s = path.as_os_str().to_owned();
s.push(".1");
PathBuf::from(s)
}
/// The last `max` bytes of a file, from the start of a line.
fn read_end(path: &Path, max: u64) -> String {
let Ok(mut f) = File::open(path) else { return String::new() };
let len = f.metadata().map_or(0, |m| m.len());
let from = len.saturating_sub(max);
let mut buf = Vec::new();
if f.seek(SeekFrom::Start(from)).is_err() || f.take(max).read_to_end(&mut buf).is_err() {
return String::new();
}
let text = String::from_utf8_lossy(&buf).into_owned();
match (from > 0, text.find('\n')) {
(true, Some(i)) => text.get(i + 1..).unwrap_or_default().to_string(),
_ => text,
}
}
impl log::Log for FileLogger {
fn enabled(&self, metadata: &log::Metadata<'_>) -> bool {
metadata.level() <= self.level
}
fn log(&self, record: &log::Record<'_>) {
if !self.enabled(record.metadata()) {
return;
}
let message = crate::crash::limited(&record.args().to_string(), MAX_LINE).replace('\n', "\n ");
let now = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).map_or(0, |d| d.as_secs());
let line = format!("{} {:<5} [{}] {}: {message}\n", crate::crash::utc(now), record.level(), std::process::id(), record.target());
if record.level() <= log::Level::Warn {
eprint!("{line}");
}
let Ok(mut out) = self.out.lock() else { return };
if out.bytes + line.len() as u64 > MAX_BYTES {
out.file = None;
let _ = fs::rename(&self.path, rotated(&self.path));
out.file = open(&self.path).ok();
out.bytes = 0;
}
if let Some(f) = &mut out.file
&& f.write_all(line.as_bytes()).is_err()
{
out.file = None;
}
out.bytes += line.len() as u64;
}
fn flush(&self) {
if let Ok(mut out) = self.out.lock()
&& let Some(f) = &mut out.file
{
let _ = f.flush();
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn tail_keeps_one_process_and_the_end() {
let d = std::env::temp_dir().join(format!("fieldcraft-logtail-{}", std::process::id()));
let _ = fs::remove_dir_all(&d);
fs::create_dir_all(&d).unwrap();
let p = d.join(FILE_NAME);
fs::write(rotated(&p), "t INFO [7] a: old seven\nt INFO [8] a: old eight\n").unwrap();
fs::write(&p, "t INFO [7] a: one\nt WARN [8] a: other\nt INFO [7] a: two\n").unwrap();
assert_eq!(tail_of(&p, Some(7), 1000), "t INFO [7] a: old seven\nt INFO [7] a: one\nt INFO [7] a: two");
assert_eq!(tail_of(&p, Some(7), 40), "t INFO [7] a: one\nt INFO [7] a: two");
assert_eq!(tail_of(&p, None, 1000).lines().count(), 5);
// From the middle of a line, the partial line is dropped.
assert_eq!(read_end(&p, 20), "t INFO [7] a: two\n");
let _ = fs::remove_dir_all(&d);
}
}
+2 -1
View File
@@ -6,7 +6,7 @@ Every entry is a toolbar button. **Ready** entries run their command; **coming s
shown greyed with the roadmap milestone that brings them (ROADMAP.md). Scripts, the command line, shown greyed with the roadmap milestone that brings them (ROADMAP.md). Scripts, the command line,
the control channel and AI agents over MCP (docs/mcp.md) run the same commands. the control channel and AI agents over MCP (docs/mcp.md) run the same commands.
65 ready, 41 coming soon. 66 ready, 41 coming soon.
## Geometry ## Geometry
@@ -163,3 +163,4 @@ the control channel and AI agents over MCP (docs/mcp.md) run the same commands.
| View | Show All — Show every item hidden in the viewport (hide, show and isolate items from the browser) | ready | `view.show_all`, (`view.hide`), (`view.show`), (`view.isolate`) | | View | Show All — Show every item hidden in the viewport (hide, show and isolate items from the browser) | ready | `view.show_all`, (`view.hide`), (`view.show`), (`view.isolate`) |
| History | Undo — Undo the last command that changed the model | ready | `edit.undo` | | History | Undo — Undo the last command that changed the model | ready | `edit.undo` |
| History | Redo — Redo the command undone last | ready | `edit.redo` | | History | Redo — Redo the command undone last | ready | `edit.redo` |
| Help | Report a Bug — Draft a GitHub bug report with the version, the OS and the last error; you review it, and nothing is sent until you submit it | ready | `diagnostics.bug_report`, `diagnostics.crash_reports`, `diagnostics.crash_report`, `diagnostics.crash_test` |