1use spar::brainstorm::{issue_body, Candidate, Standing};
11use spar::checkin::{checkin_comment, thread_reply, Settled};
12use spar::comments::{CommentKind, Pending};
13use spar::model::Ask;
14use spar::model::{
15 Dispute, Finding, Idea, Implementation, IssueRun, Judged, NextAction, ResponseDoc, Review,
16 Severity, SkippedItem, Standing as FindingStanding, Verdict,
17};
18use spar::review::{
19 disposition_comment, outcome_comment, pr_body, review_comment, skip_comment, Ending,
20};
21use spar::review_only::{recheck_comment, verdict_comment, Delta, Rechecked, Resolution};
22use spar::style::Style;
23
24fn finding(severity: &str, title: &str, detail: &str, file: &str, in_scope: bool) -> Finding {
25 Finding {
26 severity: Severity::parse_lenient(severity).expect("severity"),
27 title: title.into(),
28 detail: detail.into(),
29 file: file.into(),
30 in_scope,
31 ..Default::default()
32 }
33}
34
35fn rule(label: &str) {
36 println!("\n\x1b[1m{label}\x1b[0m\n{}", "-".repeat(72));
37}
38
39fn main() {
40 let loose = std::env::args().any(|a| a == "--loose");
41 let style = if loose {
42 Style {
43 terse: false,
44 ..Style::default()
45 }
46 } else {
47 Style::default()
48 };
49 if loose {
50 println!("(concision gate OFF: this is what a model would post unedited)");
51 }
52
53 rule("A clean review");
54 println!(
55 "{}",
56 review_comment(
57 "codex",
58 1,
59 &Review {
60 verdict: Verdict::Approve,
61 next_action: NextAction::Merge,
62 summary: "I reviewed the changes on this branch carefully and I am happy to \
63 report that the retry path is correct, the backoff calculation is \
64 sound, and the new test covers the 429 case that the issue described. \
65 I have no objections to this change landing as it stands."
66 .into(),
67 findings: vec![],
68 },
69 &style
70 )
71 );
72
73 rule("A review with real work in it");
74 println!(
75 "{}",
76 review_comment(
77 "codex",
78 2,
79 &Review {
80 verdict: Verdict::ChangesRequested,
81 next_action: NextAction::HandBack,
82 summary: "There is one genuine defect here that should block, along with a \
83 couple of improvements that I do not think need to gate this \
84 particular pull request, and one pre-existing problem I noticed \
85 while reading the surrounding code."
86 .into(),
87 findings: vec![
88 finding(
89 "blocking",
90 "Retry loop never terminates when max_attempts is unset",
91 "I confirmed this by running the 429 test with max_attempts left at its \
92 default of None: the loop spins forever because the guard on line 91 \
93 compares against Some(0) rather than checking for None first. This is \
94 not a theoretical concern, the test hangs and I had to kill it.",
95 "src/net.rs:88",
96 true,
97 ),
98 finding(
99 "non-blocking",
100 "The request timeout is hard coded to thirty seconds",
101 "It would be better if this were configurable, since a slow upstream \
102 will now fail rather than wait, but the previous code had the same \
103 limitation so this is not a regression introduced by the change.",
104 "src/net.rs:44",
105 true,
106 ),
107 finding(
108 "nit",
109 "Log line says \"retrying\" without saying how many attempts remain",
110 "Purely a readability point for whoever is reading the logs at 3am.",
111 "src/net.rs:102",
112 true,
113 ),
114 finding(
115 "blocking",
116 "Config loader swallows a parse error",
117 "Unrelated to this PR, but load_config discards the error from serde and \
118 returns Default::default(), so a typo in the config file is silently \
119 ignored.",
120 "src/config.rs:210",
121 false,
122 ),
123 ],
124 },
125 &style
126 )
127 );
128
129 rule("Answering that review");
130 println!(
131 "{}",
132 disposition_comment(
133 "claude",
134 &ResponseDoc {
135 summary: "One of the two blocking points was right and I have fixed it. I do not \
136 agree with the other and have explained why below rather than changing \
137 working code to make the review go away."
138 .into(),
139 dispositions: vec![],
140 },
141 &["Retry loop never terminates when max_attempts is unset".to_string()],
142 &[
143 "Config loader swallows a parse error. The caller already validates the file \
144 against the schema before load_config is reached, so the discarded error is \
145 unreachable in practice."
146 .to_string()
147 ],
148 &["https://github.com/you/thing/issues/512".to_string()],
149 &style
150 )
151 .unwrap_or_default()
152 );
153
154 rule("The pull request body");
155 println!(
156 "{}",
157 pr_body(
158 478,
159 &Implementation {
160 summary: "Retry a 429 with exponential backoff instead of failing the request."
161 .into(),
162 problem: "A rate limited response was treated as fatal, so a single throttled \
163 call ended a run that had hours of work left in it. The retry path \
164 existed but only covered connection errors, and nothing in the logs \
165 said which of the two had happened."
166 .into(),
167 changes: vec![
168 "`send` now retries a 429, honouring `Retry-After` when the server sets it \
169 and backing off exponentially when it does not"
170 .into(),
171 "the retry budget is bounded at five attempts, so a permanent 429 still \
172 ends the call rather than spinning"
173 .into(),
174 "a retry logs the status it is retrying, which is what made the original \
175 failure impossible to tell apart from a dropped connection"
176 .into(),
177 ],
178 testing: vec![
179 "`cargo test retries_a_rate_limited_request`, which fakes a 429 with a \
180 `Retry-After` of 2 and asserts the wait"
181 .into(),
182 "point it at a throttled endpoint and watch a run finish rather than stop \
183 on the first 429"
184 .into(),
185 ],
186 notes: Some(
187 "Streaming calls do not go through `send` and are unchanged, which is worth \
188 a follow-up but not this one."
189 .into()
190 ),
191 ..Implementation::default()
192 },
193 Some("cargo test"),
194 &style
195 )
196 );
197
198 rule("What a whole run leaves on the PR (the default, one comment)");
199 let mut ended = IssueRun::new(482, "t");
200 ended.disputes = vec![Dispute {
201 title: "Config loader swallows a parse error".into(),
202 file: "src/config.rs".into(),
203 reasoning: "the caller validates against the schema before load_config is reached".into(),
204 }];
205 ended.filed = vec![
206 "https://github.com/you/thing/issues/485".into(),
207 "https://github.com/you/thing/issues/486".into(),
208 ];
209 println!(
210 "{}",
211 outcome_comment(
212 &ended,
213 &spar::model::Ledger::new(),
214 &Ending::OutOfRounds,
215 &style
216 )
217 .unwrap_or_default()
218 );
219 println!("\n (and a clean run that filed nothing posts no comment at all)");
220
221 rule("What a run leaves when the closing pass did not sign it off");
222 let mut left = IssueRun::new(482, "t");
223 left.noted = vec![finding(
224 "non-blocking",
225 "Timeout is not configurable",
226 "The retry budget is fixed at three.",
227 "src/net.rs",
228 true,
229 )];
230 let unresolved = vec![finding(
231 "blocking",
232 "The retry fix never reaches the 429 path",
233 "The guard added in round 2 sits after the early return on line 88, so a rate limited \
234 response still takes the old path. Reproduced with the 429 test.",
235 "src/net.rs:88",
236 true,
237 )];
238 println!(
239 "{}",
240 outcome_comment(
241 &left,
242 &spar::model::Ledger::new(),
243 &Ending::Unresolved(&unresolved),
244 &style
245 )
246 .unwrap_or_default()
247 );
248
249 rule("A review of somebody else's pull request (spar review)");
250 let judged = |standing, severity, title: &str, detail: &str, file: &str, by: &str| Judged {
251 finding: finding(severity, title, detail, file, true),
252 raised_by: by.to_string(),
253 standing,
254 counterpoint: None,
255 defence: None,
256 rated: None,
257 };
258 let mut disputed = judged(
259 FindingStanding::Disputed,
260 "blocking",
261 "Config loader swallows a parse error",
262 "load_config discards the error from serde and returns a default.",
263 "src/config.rs:210",
264 "claude",
265 );
266 disputed.counterpoint =
267 Some("the caller validates against the schema before load_config is reached".into());
268 println!(
269 "{}",
270 verdict_comment(
271 &[
272 judged(
273 FindingStanding::Corroborated,
274 "blocking",
275 "Retry loop never terminates when max_attempts is unset",
276 "Both reviewers reproduced this: the guard on line 91 compares against \
277 Some(0) rather than checking for None, so the 429 test hangs.",
278 "src/net.rs:88",
279 "claude and codex",
280 ),
281 judged(
282 FindingStanding::Confirmed,
283 "non-blocking",
284 "The request timeout is hard coded",
285 "Not a regression, the previous code had the same limitation.",
286 "src/net.rs:44",
287 "codex",
288 ),
289 judged(
290 FindingStanding::Unverified,
291 "nit",
292 "Log line does not say how many attempts remain",
293 "Readability for whoever reads the logs at 3am.",
294 "src/net.rs:102",
295 "claude",
296 ),
297 disputed,
298 judged(
299 FindingStanding::Withdrawn,
300 "blocking",
301 "Off by one in the backoff",
302 "Withdrawn after the other reviewer pointed at the test that covers it.",
303 "src/net.rs:70",
304 "codex",
305 ),
306 ],
307 &style
308 )
309 );
310
311 rule("A second look at that pull request, after the author pushed (spar review --recheck)");
312 let recorded = |severity: &str, title: &str, detail: &str, file: &str, standing| {
313 spar::model::RecordedFinding {
314 title: title.into(),
315 file: file.into(),
316 severity: Severity::parse_lenient(severity).expect("severity"),
317 detail: detail.into(),
318 in_scope: true,
319 raised_by: "claude and codex".into(),
320 standing,
321 counterpoint: None,
322 defence: None,
323 }
324 };
325 println!(
326 "{}",
327 recheck_comment(
328 &Delta {
329 from: "0123abcdef".into(),
330 commits: vec![
331 "a1b2c3d check for None before comparing attempts".into(),
332 "e4f5a6b make the request timeout configurable".into(),
333 ],
334 rewritten: false,
335 },
336 &[
337 Rechecked {
338 recorded: recorded(
339 "blocking",
340 "Retry loop never terminates when max_attempts is unset",
341 "The guard on line 91 compares against Some(0) rather than checking for None.",
342 "src/net.rs:88",
343 FindingStanding::Corroborated,
344 ),
345 resolution: Resolution::Fixed(
346 "src/net.rs:91 now matches on None first, and the 429 test that used to \
347 hang passes in 0.3s when run with cargo test retry"
348 .into(),
349 ),
350 },
351 Rechecked {
352 recorded: recorded(
353 "non-blocking",
354 "The request timeout is hard coded",
355 "Not a regression, the previous code had the same limitation.",
356 "src/net.rs:44",
357 FindingStanding::Confirmed,
358 ),
359 resolution: Resolution::Rebutted(
360 "the author's reply is right that the timeout comes from the caller's \
361 Client builder since e4f5a6b, so there is nothing left to make configurable \
362 here"
363 .into(),
364 ),
365 },
366 Rechecked {
367 recorded: recorded(
368 "blocking",
369 "Config loader swallows a parse error",
370 "load_config discards the error from serde and returns a default.",
371 "src/config.rs:210",
372 FindingStanding::Confirmed,
373 ),
374 resolution: Resolution::Open(
375 "codex still sees it: load_config still returns Default on a parse error, \
376 and nothing upstream validates the file first"
377 .into(),
378 ),
379 },
380 ],
381 &[judged(
382 FindingStanding::Corroborated,
383 "non-blocking",
384 "The new None branch logs at error level on every retry",
385 "Each retry now writes an error line, so a flaky upstream fills the log with \
386 errors for a request that succeeds on the third try.",
387 "src/net.rs:93",
388 "claude and codex",
389 )],
390 &style,
391 2
392 )
393 );
394
395 rule("An issue both reviewers declined");
396 println!(
397 "{}",
398 skip_comment(
399 &SkippedItem {
400 issue: 91,
401 title: "Add a dark mode".into(),
402 tracker: false,
403 reasons: [
404 (
405 "claude".to_string(),
406 "This was already implemented in 1.4 and shipped behind the theme \
407 setting, so there is nothing left to do here."
408 .to_string()
409 ),
410 (
411 "codex".to_string(),
412 "Duplicate of #62, which is still open and has the full discussion."
413 .to_string()
414 ),
415 ]
416 .into_iter()
417 .collect(),
418 },
419 &style
420 )
421 );
422 rule("Answering a comment in its own thread");
423 for item in [
424 settled(
425 Ask::Implement,
426 "alice",
427 "src/retry.rs:91",
428 "Added the guard on the retry path and a test that reproduces the original failure.",
429 "",
430 true,
431 ),
432 settled(
433 Ask::Decline,
434 "bob",
435 "src/pool.rs:14",
436 "",
437 "Every caller of this function already holds the pool lock, so the check on line 14 \
438 cannot be reached with a null connection. I ran the suite with an assertion in its \
439 place and nothing tripped it.",
440 false,
441 ),
442 settled(
443 Ask::Defer,
444 "carol",
445 "src/electrum.rs:203",
446 "",
447 "This is real and it predates the branch: the reconnect monitor puts a stopped wallet \
448 back into the header router. It is not caused by anything here, so fixing it in this \
449 pull request would put an unrelated change in front of whoever reviews it.",
450 false,
451 ),
452 ] {
453 println!("{}\n", thread_reply(&item, &style));
454 }
455
456 rule("What a check-in leaves on the pull request");
457 let mut fixed = settled(
458 Ask::Implement,
459 "alice",
460 "the pull request",
461 "Retried the 429 with the backoff the issue asked for.",
462 "",
463 true,
464 );
465 fixed.pending.file = None;
466 let mut parked = settled(
467 Ask::Decline,
468 "dave",
469 "the pull request",
470 "",
471 "The two reviewers read the same code and did not agree about whether the guard is \
472 reachable.",
473 false,
474 );
475 parked.pending.file = None;
476 parked.parked = true;
477 println!(
478 "{}",
479 checkin_comment(&[fixed, parked], &style)
480 .unwrap_or_else(|| "(nothing to say, so no comment is posted)".into())
481 );
482 println!("\n (and a check-in with nothing outstanding posts no comment at all)");
483
484 rule("An idea filed from a brainstorm");
485 let idea = Candidate {
486 id: 1,
487 idea: Idea {
488 title: "Batch settlement with hash timelocks".into(),
489 combines: vec![
490 "hash time locked contracts".into(),
491 "batch auctions".into(),
492 "the OP_CHECKSEQUENCEVERIFY delay".into(),
493 ],
494 how_it_works: "Each trade posts a hash timelock, and one batch auction clears every \
495 one of them at the deadline together, so the batch is the settlement."
496 .into(),
497 why_new: "The nearest thing is a plain escrow, which settles one trade at a time \
498 and cannot net them against each other."
499 .into(),
500 enables: "Settling many trades in one transaction.".into(),
501 risks: "A fee spike at the deadline makes the batch uneconomic.".into(),
502 first_experiment: "Simulate ten trades on regtest and count the bytes.".into(),
503 },
504 proposers: vec!["claude".into()],
505 parent: None,
506 objection: Some((
507 "codex".into(),
508 "Coinjoin coordinators already batch settlement.".into(),
509 )),
510 defence: Some(
511 "A coordinator batches inputs, not conditional trades; nothing there clears a hash \
512 lock."
513 .into(),
514 ),
515 standing: Standing::Defended,
516 rank_sum: 3,
517 };
518 println!("{}", issue_body(&idea, &style));
519 println!("\n (who proposed and who objected stays in the session file, never in the issue)");
520
521 println!();
522}
523
524fn settled(
527 ask: Ask,
528 author: &str,
529 at: &str,
530 summary: &str,
531 reasoning: &str,
532 pushed: bool,
533) -> Settled {
534 let (file, line) = match at.split_once(':') {
535 Some((f, l)) => (Some(f.to_string()), l.parse().ok()),
536 None => (Some(at.to_string()), None),
537 };
538 Settled {
539 pending: Pending {
540 ref_id: "c1".into(),
541 kind: CommentKind::Thread {
542 thread_id: "PRRT_kwABC".into(),
543 reply_to: 1,
544 can_resolve: true,
545 },
546 key: "thread:PRRT_kwABC".into(),
547 newest: "PRRC_kw1".into(),
548 author: author.into(),
549 association: "COLLABORATOR".into(),
550 gate_author: author.into(),
551 gate_association: "COLLABORATOR".into(),
552 body: String::new(),
553 file,
554 line,
555 hunk: String::new(),
556 url: String::new(),
557 at: "2026-01-02T03:04:05Z".into(),
558 },
559 ask,
560 request: "add a guard on the retry path".into(),
561 reasoning: reasoning.into(),
562 summary: summary.into(),
563 files: Vec::new(),
564 changed: pushed,
565 pushed,
566 blocked: None,
567 filed: (ask == Ask::Defer).then(|| "https://github.com/owner/repo/issues/512".to_string()),
568 parked: false,
569 counterpoint: None,
570 }
571}