pr_01m47d24b0e6n91zwymwxg0vpx/services/work/src/queue.rs
| 1 | //! The merge queue: pull requests are tested together with the ones ahead |
| 2 | //! of them, and only a combination that passed reaches the default branch. |
| 3 | //! |
| 4 | //! A batch of up to [`BATCH`] entries is tested at once, speculatively: one |
| 5 | //! sandbox per entry builds the default branch with that entry and every |
| 6 | //! entry ahead of it merged in, runs all of their acceptance checks, and |
| 7 | //! pushes the result to `g1t-queue/<entry>`. Entries land in order, each by |
| 8 | //! moving the default branch to its tested state, once everything ahead has |
| 9 | //! landed. One that fails leaves the queue with a failed check run, which |
| 10 | //! sends a g1t agent back to fix it; the entries behind it are tested again |
| 11 | //! without it. |
| 12 | |
| 13 | use futures_util::future::try_join_all; |
| 14 | use g1t_contracts::events::{ChecksEvent, QueueChanged}; |
| 15 | use g1t_contracts::repos::{GetByIdArgs, HeadArgs, LandArgs, Landed, Repo, RepoPath}; |
| 16 | use g1t_contracts::time::rfc3339; |
| 17 | use g1t_contracts::work::*; |
| 18 | use g1t_contracts::{FailureCode, Outcome, User, new_id}; |
| 19 | use g1t_kit::now_ms; |
| 20 | use serde::Deserialize; |
| 21 | use worker::Result; |
| 22 | use worker::wasm_bindgen::JsValue; |
| 23 | |
| 24 | use crate::Work; |
| 25 | use crate::checks::{hash, new_token}; |
| 26 | |
| 27 | /// How many entries are tested at once. |
| 28 | const BATCH: usize = 4; |
| 29 | /// How long a batch may take before it is tested again. |
| 30 | const TESTING_MINUTES: u64 = 45; |
| 31 | /// How many entries that left the queue are shown. |
| 32 | const RECENT: u32 = 20; |
| 33 | /// How many completed issues' checks make up the default branch's contract. |
| 34 | const CONTRACT_ISSUES: u32 = 30; |
| 35 | /// Where tested states are pushed, in the repository itself. |
| 36 | const BRANCH_PREFIX: &str = "g1t-queue/"; |
| 37 | |
| 38 | #[derive(Clone, Deserialize)] |
| 39 | struct EntryRow { |
| 40 | id: String, |
| 41 | repo_id: String, |
| 42 | pull_id: String, |
| 43 | number: u32, |
| 44 | state: String, |
| 45 | enqueued_by: String, |
| 46 | keep_issue_open: u32, |
| 47 | head_commit: Option<String>, |
| 48 | base_commit: Option<String>, |
| 49 | ahead: Option<String>, |
| 50 | combined_commit: Option<String>, |
| 51 | results: Option<String>, |
| 52 | error: Option<String>, |
| 53 | tested_at: Option<String>, |
| 54 | created_at: String, |
| 55 | finished_at: Option<String>, |
| 56 | } |
| 57 | |
| 58 | impl EntryRow { |
| 59 | fn state(&self) -> QueueState { |
| 60 | match self.state.as_str() { |
| 61 | "testing" => QueueState::Testing, |
| 62 | "passed" => QueueState::Passed, |
| 63 | "failed" => QueueState::Failed, |
| 64 | "landed" => QueueState::Landed, |
| 65 | "removed" => QueueState::Removed, |
| 66 | _ => QueueState::Waiting, |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | fn actor(&self) -> Option<User> { |
| 71 | serde_json::from_str(&self.enqueued_by).ok() |
| 72 | } |
| 73 | |
| 74 | fn ahead(&self) -> Vec<u32> { |
| 75 | self.ahead |
| 76 | .as_deref() |
| 77 | .and_then(|ahead| serde_json::from_str(ahead).ok()) |
| 78 | .unwrap_or_default() |
| 79 | } |
| 80 | |
| 81 | fn branch(&self) -> String { |
| 82 | format!("{BRANCH_PREFIX}{}", self.id) |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | fn minutes_ago(minutes: u64) -> String { |
| 87 | rfc3339(now_ms().saturating_sub(minutes * 60 * 1000)) |
| 88 | } |
| 89 | |
| 90 | impl Work { |
| 91 | async fn entries(&self, repo_id: &str, active: bool) -> Result<Vec<EntryRow>> { |
| 92 | let sql = if active { |
| 93 | "SELECT * FROM queue_entries |
| 94 | WHERE repo_id = ? AND state IN ('waiting', 'testing', 'passed') |
| 95 | ORDER BY created_at, id" |
| 96 | } else { |
| 97 | "SELECT * FROM queue_entries |
| 98 | WHERE repo_id = ? AND state IN ('failed', 'landed', 'removed') |
| 99 | ORDER BY finished_at DESC LIMIT ?" |
| 100 | }; |
| 101 | let statement = self.db.prepare(sql); |
| 102 | let statement = if active { |
| 103 | statement.bind(&[repo_id.into()])? |
| 104 | } else { |
| 105 | statement.bind(&[repo_id.into(), RECENT.into()])? |
| 106 | }; |
| 107 | statement.all().await?.results::<EntryRow>() |
| 108 | } |
| 109 | |
| 110 | /// The entry a pull request has in the queue now, if any. |
| 111 | pub(crate) async fn queued_entry(&self, pull_id: &str) -> Result<Option<(QueueState, Vec<u32>)>> { |
| 112 | let row = self |
| 113 | .db |
| 114 | .prepare( |
| 115 | "SELECT * FROM queue_entries |
| 116 | WHERE pull_id = ? AND state IN ('waiting', 'testing', 'passed') LIMIT 1", |
| 117 | ) |
| 118 | .bind(&[pull_id.into()])? |
| 119 | .first::<EntryRow>(None) |
| 120 | .await?; |
| 121 | Ok(row.map(|row| (row.state(), row.ahead()))) |
| 122 | } |
| 123 | |
| 124 | async fn changed(&self, repo_id: &str) -> Result<()> { |
| 125 | self.publish_as( |
| 126 | "queue.changed", |
| 127 | repo_id, |
| 128 | None, |
| 129 | QueueChanged { |
| 130 | repo_id: repo_id.to_owned(), |
| 131 | }, |
| 132 | ) |
| 133 | .await |
| 134 | } |
| 135 | |
| 136 | /// Puts a pull request that may merge into the queue instead. Merging |
| 137 | /// it again while it is queued changes nothing. |
| 138 | pub(crate) async fn enqueue( |
| 139 | &self, |
| 140 | repo: &Repo, |
| 141 | pull: &Pull, |
| 142 | actor: &User, |
| 143 | keep_issue_open: bool, |
| 144 | ) -> Result<Outcome<Pull>> { |
| 145 | if self.queued_entry(&pull.id).await?.is_some() { |
| 146 | return Ok(Outcome::Ok(pull.clone())); |
| 147 | } |
| 148 | let now = now_ms(); |
| 149 | self.db |
| 150 | .prepare( |
| 151 | "INSERT INTO queue_entries |
| 152 | (id, repo_id, pull_id, number, state, enqueued_by, keep_issue_open, created_at) |
| 153 | VALUES (?, ?, ?, ?, 'waiting', ?, ?, ?)", |
| 154 | ) |
| 155 | .bind(&[ |
| 156 | new_id("qen", now).into(), |
| 157 | repo.id.as_str().into(), |
| 158 | pull.id.as_str().into(), |
| 159 | pull.number.into(), |
| 160 | serde_json::to_string(actor)?.into(), |
| 161 | u32::from(keep_issue_open).into(), |
| 162 | rfc3339(now).into(), |
| 163 | ])? |
| 164 | .run() |
| 165 | .await?; |
| 166 | let who = (actor.id.as_str(), actor.username.as_str()); |
| 167 | self.note(&repo.id, pull.number, who, "added this to the merge queue") |
| 168 | .await?; |
| 169 | self.changed(&repo.id).await?; |
| 170 | Ok(Outcome::Ok(pull.clone())) |
| 171 | } |
| 172 | |
| 173 | pub(crate) async fn queue(&self, a: QueueArgs) -> Result<Outcome<QueueView>> { |
| 174 | let repo = match self.repo(&a.repo, &a.viewer).await? { |
| 175 | Outcome::Ok(repo) => repo, |
| 176 | Outcome::Fail(failure) => return Ok(Outcome::Fail(failure)), |
| 177 | }; |
| 178 | let enabled = self.settings(&repo.id).await?.merge_queue; |
| 179 | let (active, recent) = (self.entries(&repo.id, true).await?, self.entries(&repo.id, false).await?); |
| 180 | let numbers: Vec<u32> = active.iter().chain(&recent).map(|row| row.number).collect(); |
| 181 | let pulls = try_join_all(numbers.iter().map(|number| self.pull(&repo.id, *number))).await?; |
| 182 | let view = |rows: Vec<EntryRow>, pulls: &[Option<Pull>]| -> Vec<QueueEntry> { |
| 183 | rows.into_iter() |
| 184 | .zip(pulls) |
| 185 | .map(|(row, pull)| QueueEntry { |
| 186 | state: row.state(), |
| 187 | ahead: row.ahead(), |
| 188 | enqueued_by: row.actor().map_or_else(|| "g1t".to_owned(), |actor| actor.username), |
| 189 | title: pull.as_ref().map(|p| p.title.clone()).unwrap_or_default(), |
| 190 | agent: pull.as_ref().map(|p| p.agent.clone()).unwrap_or_default(), |
| 191 | results: row |
| 192 | .results |
| 193 | .as_deref() |
| 194 | .and_then(|results| serde_json::from_str(results).ok()) |
| 195 | .unwrap_or_default(), |
| 196 | id: row.id, |
| 197 | number: row.number, |
| 198 | base_commit: row.base_commit, |
| 199 | combined_commit: row.combined_commit, |
| 200 | error: row.error, |
| 201 | created_at: row.created_at, |
| 202 | finished_at: row.finished_at, |
| 203 | }) |
| 204 | .collect() |
| 205 | }; |
| 206 | let split = active.len(); |
| 207 | Ok(Outcome::Ok(QueueView { |
| 208 | enabled, |
| 209 | active: view(active, &pulls[..split]), |
| 210 | recent: view(recent, &pulls[split..]), |
| 211 | })) |
| 212 | } |
| 213 | |
| 214 | /// Takes a pull request out of the queue, by a member's hand. |
| 215 | pub(crate) async fn remove_from_queue(&self, a: PullActionArgs) -> Result<Outcome<Pull>> { |
| 216 | let viewer = Some(a.actor.clone()); |
| 217 | let (repo, pull) = match self.pull_at(&a.repo, a.number, &viewer).await? { |
| 218 | Outcome::Ok(found) => found, |
| 219 | Outcome::Fail(failure) => return Ok(Outcome::Fail(failure)), |
| 220 | }; |
| 221 | if !a.actor.verified || !a.actor.is_member(&repo.namespace) { |
| 222 | return Ok(Outcome::fail( |
| 223 | FailureCode::Forbidden, |
| 224 | "Only members of the repository's workspace can change its merge queue.", |
| 225 | )); |
| 226 | } |
| 227 | if self.leave(&repo.id, &pull, QueueState::Removed, None).await? { |
| 228 | let who = (a.actor.id.as_str(), a.actor.username.as_str()); |
| 229 | self.note(&repo.id, pull.number, who, "removed this from the merge queue") |
| 230 | .await?; |
| 231 | self.changed(&repo.id).await?; |
| 232 | } |
| 233 | Ok(Outcome::Ok(pull)) |
| 234 | } |
| 235 | |
| 236 | /// Takes a pull request's entry out of the queue, and sends every entry |
| 237 | /// whose tested state included it back to waiting. Whether it had one. |
| 238 | pub(crate) async fn leave( |
| 239 | &self, |
| 240 | repo_id: &str, |
| 241 | pull: &Pull, |
| 242 | state: QueueState, |
| 243 | error: Option<&str>, |
| 244 | ) -> Result<bool> { |
| 245 | let active = self.entries(repo_id, true).await?; |
| 246 | let Some(entry) = active.iter().find(|row| row.pull_id == pull.id) else { |
| 247 | return Ok(false); |
| 248 | }; |
| 249 | let now = rfc3339(now_ms()); |
| 250 | self.db |
| 251 | .prepare( |
| 252 | "UPDATE queue_entries SET state = ?, error = COALESCE(?, error), finished_at = ? |
| 253 | WHERE id = ?", |
| 254 | ) |
| 255 | .bind(&[ |
| 256 | state.as_str().into(), |
| 257 | error.map_or(JsValue::NULL, JsValue::from), |
| 258 | now.as_str().into(), |
| 259 | entry.id.as_str().into(), |
| 260 | ])? |
| 261 | .run() |
| 262 | .await?; |
| 263 | let behind: Vec<&EntryRow> = active |
| 264 | .iter() |
| 265 | .filter(|row| row.state() != QueueState::Waiting && row.ahead().contains(&pull.number)) |
| 266 | .collect(); |
| 267 | self.retest(&behind).await?; |
| 268 | Ok(true) |
| 269 | } |
| 270 | |
| 271 | /// Sends entries back to waiting, to be tested again. |
| 272 | async fn retest(&self, rows: &[&EntryRow]) -> Result<()> { |
| 273 | for row in rows { |
| 274 | self.db |
| 275 | .prepare( |
| 276 | "UPDATE queue_entries |
| 277 | SET state = 'waiting', token_hash = NULL, combined_commit = NULL, |
| 278 | results = NULL, error = NULL, ahead = NULL |
| 279 | WHERE id = ? AND state IN ('testing', 'passed')", |
| 280 | ) |
| 281 | .bind(&[row.id.as_str().into()])? |
| 282 | .run() |
| 283 | .await?; |
| 284 | } |
| 285 | Ok(()) |
| 286 | } |
| 287 | |
| 288 | /// The next batch to test, if nothing is being tested now: one job per |
| 289 | /// entry, each building the default branch with that entry and every |
| 290 | /// entry ahead of it. |
| 291 | pub(crate) async fn queue_build(&self, a: QueueBuildArgs) -> Result<Vec<QueueJob>> { |
| 292 | let active = self.entries(&a.repo_id, true).await?; |
| 293 | // A batch that has taken too long is tested again. |
| 294 | let stale = minutes_ago(TESTING_MINUTES); |
| 295 | let stuck: Vec<&EntryRow> = active |
| 296 | .iter() |
| 297 | .filter(|row| { |
| 298 | row.state() == QueueState::Testing |
| 299 | && row.tested_at.as_deref().is_none_or(|at| at < stale.as_str()) |
| 300 | }) |
| 301 | .collect(); |
| 302 | if !stuck.is_empty() { |
| 303 | self.retest(&stuck).await?; |
| 304 | return Box::pin(self.queue_build(a)).await; |
| 305 | } |
| 306 | if active.iter().any(|row| row.state() != QueueState::Waiting) { |
| 307 | return Ok(Vec::new()); |
| 308 | } |
| 309 | let batch: Vec<EntryRow> = active.into_iter().take(BATCH).collect(); |
| 310 | let Some(first) = batch.first() else { |
| 311 | return Ok(Vec::new()); |
| 312 | }; |
| 313 | let Some(actor) = first.actor() else { |
| 314 | return Ok(Vec::new()); |
| 315 | }; |
| 316 | let repo: Outcome<Repo> = g1t_kit::call( |
| 317 | &self.repos, |
| 318 | "get_by_id", |
| 319 | &GetByIdArgs { |
| 320 | id: a.repo_id.clone(), |
| 321 | viewer: Some(actor), |
| 322 | }, |
| 323 | ) |
| 324 | .await?; |
| 325 | let Outcome::Ok(repo) = repo else { |
| 326 | return Ok(Vec::new()); |
| 327 | }; |
| 328 | let base: Option<String> = g1t_kit::call( |
| 329 | &self.repos, |
| 330 | "head", |
| 331 | &HeadArgs { |
| 332 | repo_id: repo.id.clone(), |
| 333 | branch: repo.default_branch.clone(), |
| 334 | }, |
| 335 | ) |
| 336 | .await?; |
| 337 | let Some(base) = base else { |
| 338 | return Ok(Vec::new()); |
| 339 | }; |
| 340 | |
| 341 | // Each entry's change, as it is now, and the checks it brings. |
| 342 | let mut items: Vec<(EntryRow, Pull, QueueStackItem, Vec<String>)> = Vec::new(); |
| 343 | for row in batch { |
| 344 | let Some(pull) = self.pull_by_id(&row.pull_id).await? else { |
| 345 | continue; |
| 346 | }; |
| 347 | if pull.status != PullStatus::Open { |
| 348 | self.leave(&repo.id, &pull, QueueState::Removed, Some("It was closed.")) |
| 349 | .await?; |
| 350 | continue; |
| 351 | } |
| 352 | let head: Option<String> = g1t_kit::call( |
| 353 | &self.repos, |
| 354 | "head", |
| 355 | &HeadArgs { |
| 356 | repo_id: pull.fork_repo_id.clone().unwrap_or_else(|| repo.id.clone()), |
| 357 | branch: pull.branch.clone().unwrap_or_else(|| repo.default_branch.clone()), |
| 358 | }, |
| 359 | ) |
| 360 | .await?; |
| 361 | let Some(commit) = head else { |
| 362 | continue; |
| 363 | }; |
| 364 | let checks = match pull.issue { |
| 365 | Some(number) => self |
| 366 | .issue(&repo.id, number) |
| 367 | .await? |
| 368 | .map(|issue| issue.checks) |
| 369 | .unwrap_or_default(), |
| 370 | None => Vec::new(), |
| 371 | }; |
| 372 | let source = pull.fork.clone().unwrap_or_else(|| RepoPath { |
| 373 | namespace: repo.namespace.clone(), |
| 374 | name: repo.name.clone(), |
| 375 | }); |
| 376 | let item = QueueStackItem { |
| 377 | number: pull.number, |
| 378 | title: pull.title.clone(), |
| 379 | source, |
| 380 | branch: pull.branch.clone().unwrap_or_else(|| repo.default_branch.clone()), |
| 381 | commit, |
| 382 | }; |
| 383 | items.push((row, pull, item, checks)); |
| 384 | } |
| 385 | |
| 386 | // What the default branch has promised so far: every check an issue |
| 387 | // passed when it landed, newest first. |
| 388 | #[derive(Deserialize)] |
| 389 | struct ChecksRow { |
| 390 | checks: String, |
| 391 | } |
| 392 | let mut contract: Vec<String> = Vec::new(); |
| 393 | for row in self |
| 394 | .db |
| 395 | .prepare( |
| 396 | "SELECT checks FROM issues |
| 397 | WHERE repo_id = ? AND state = 'closed' AND reason = 'completed' AND checks != '[]' |
| 398 | ORDER BY closed_at DESC LIMIT ?", |
| 399 | ) |
| 400 | .bind(&[repo.id.as_str().into(), CONTRACT_ISSUES.into()])? |
| 401 | .all() |
| 402 | .await? |
| 403 | .results::<ChecksRow>()? |
| 404 | { |
| 405 | for check in serde_json::from_str::<Vec<String>>(&row.checks).unwrap_or_default() { |
| 406 | if !contract.contains(&check) { |
| 407 | contract.push(check); |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | let now = rfc3339(now_ms()); |
| 413 | let mut jobs = Vec::new(); |
| 414 | for index in 0..items.len() { |
| 415 | let (row, pull, _, _) = &items[index]; |
| 416 | let stack: Vec<QueueStackItem> = items[..=index].iter().map(|(_, _, item, _)| item.clone()).collect(); |
| 417 | let mut checks: Vec<String> = Vec::new(); |
| 418 | for (_, _, _, theirs) in &items[..=index] { |
| 419 | for check in theirs { |
| 420 | if !checks.contains(check) { |
| 421 | checks.push(check.clone()); |
| 422 | } |
| 423 | } |
| 424 | } |
| 425 | let ahead: Vec<u32> = stack[..index].iter().map(|item| item.number).collect(); |
| 426 | let token = new_token(); |
| 427 | self.db |
| 428 | .prepare( |
| 429 | "UPDATE queue_entries |
| 430 | SET state = 'testing', token_hash = ?, head_commit = ?, base_commit = ?, |
| 431 | ahead = ?, combined_commit = NULL, results = NULL, error = NULL, |
| 432 | tested_at = ? |
| 433 | WHERE id = ? AND state = 'waiting'", |
| 434 | ) |
| 435 | .bind(&[ |
| 436 | hash(&token).into(), |
| 437 | stack[index].commit.as_str().into(), |
| 438 | base.as_str().into(), |
| 439 | serde_json::to_string(&ahead)?.into(), |
| 440 | now.as_str().into(), |
| 441 | row.id.as_str().into(), |
| 442 | ])? |
| 443 | .run() |
| 444 | .await?; |
| 445 | // The sandbox reads the change and pushes the tested state as |
| 446 | // the pull request's author: a real account, whose token carries |
| 447 | // its memberships. (Whoever queued it may be g1t itself.) |
| 448 | let actor = pull.author.clone(); |
| 449 | jobs.push(QueueJob { |
| 450 | entry_id: row.id.clone(), |
| 451 | token, |
| 452 | repo: RepoPath { |
| 453 | namespace: repo.namespace.clone(), |
| 454 | name: repo.name.clone(), |
| 455 | }, |
| 456 | default_branch: repo.default_branch.clone(), |
| 457 | base_commit: base.clone(), |
| 458 | branch: row.branch(), |
| 459 | contract_checks: contract.iter().filter(|check| !checks.contains(check)).cloned().collect(), |
| 460 | stack, |
| 461 | checks, |
| 462 | actor, |
| 463 | }); |
| 464 | } |
| 465 | Ok(jobs) |
| 466 | } |
| 467 | |
| 468 | /// A sandbox's result for one combined state. |
| 469 | pub(crate) async fn report_queue(&self, a: ReportQueueArgs) -> Result<Outcome<QueueState>> { |
| 470 | let row = self |
| 471 | .db |
| 472 | .prepare("SELECT * FROM queue_entries WHERE id = ? AND token_hash = ?") |
| 473 | .bind(&[a.entry_id.as_str().into(), hash(&a.token).into()])? |
| 474 | .first::<EntryRow>(None) |
| 475 | .await?; |
| 476 | let Some(row) = row else { |
| 477 | return Ok(Outcome::fail(FailureCode::NotFound, "No such queue entry.")); |
| 478 | }; |
| 479 | if row.state() != QueueState::Testing { |
| 480 | return Ok(Outcome::fail( |
| 481 | FailureCode::Conflict, |
| 482 | "This state is no longer being tested.", |
| 483 | )); |
| 484 | } |
| 485 | let passed = a.error.is_none() && a.results.iter().all(|result| result.passed); |
| 486 | let state = if passed { QueueState::Passed } else { QueueState::Failed }; |
| 487 | self.db |
| 488 | .prepare( |
| 489 | "UPDATE queue_entries |
| 490 | SET state = ?, combined_commit = ?, results = ?, error = ?, token_hash = NULL, |
| 491 | finished_at = CASE WHEN ? = 'failed' THEN ? ELSE NULL END |
| 492 | WHERE id = ?", |
| 493 | ) |
| 494 | .bind(&[ |
| 495 | state.as_str().into(), |
| 496 | a.combined_commit.as_deref().map_or(JsValue::NULL, JsValue::from), |
| 497 | serde_json::to_string(&a.results)?.into(), |
| 498 | a.error.as_deref().map_or(JsValue::NULL, JsValue::from), |
| 499 | state.as_str().into(), |
| 500 | rfc3339(now_ms()).into(), |
| 501 | row.id.as_str().into(), |
| 502 | ])? |
| 503 | .run() |
| 504 | .await?; |
| 505 | if !passed { |
| 506 | self.eject(&row, &a).await?; |
| 507 | } |
| 508 | self.settle(&row.repo_id).await?; |
| 509 | self.changed(&row.repo_id).await?; |
| 510 | Ok(Outcome::Ok(state)) |
| 511 | } |
| 512 | |
| 513 | /// An entry whose combined state failed: the entries tested on top of |
| 514 | /// it are tested again without it, and the failure is recorded as a |
| 515 | /// failed check run of its pull request, so a g1t agent is sent back. |
| 516 | async fn eject(&self, row: &EntryRow, report: &ReportQueueArgs) -> Result<()> { |
| 517 | let active = self.entries(&row.repo_id, true).await?; |
| 518 | let behind: Vec<&EntryRow> = active |
| 519 | .iter() |
| 520 | .filter(|other| other.state() != QueueState::Waiting && other.ahead().contains(&row.number)) |
| 521 | .collect(); |
| 522 | self.retest(&behind).await?; |
| 523 | |
| 524 | let Some(pull) = self.pull_by_id(&row.pull_id).await? else { |
| 525 | return Ok(()); |
| 526 | }; |
| 527 | let ahead = row.ahead(); |
| 528 | let state = if ahead.is_empty() { |
| 529 | "the default branch as it is now".to_owned() |
| 530 | } else { |
| 531 | format!( |
| 532 | "the default branch with {} merged in first", |
| 533 | ahead.iter().map(|n| format!("#{n}")).collect::<Vec<_>>().join(", ") |
| 534 | ) |
| 535 | }; |
| 536 | let why = match (&report.error, report.conflict_with) { |
| 537 | (_, Some(other)) if other != row.number => format!( |
| 538 | "Its change conflicts with #{other}, which is ahead of it in the merge queue. Bring it up to date with the default branch once #{other} lands, and merge it again." |
| 539 | ), |
| 540 | (Some(error), _) => format!("Its combined state could not be built or checked: {error}"), |
| 541 | (None, _) => format!( |
| 542 | "The acceptance checks failed when it was combined with {state}, though it may pass on its own." |
| 543 | ), |
| 544 | }; |
| 545 | let now = now_ms(); |
| 546 | let run_id = new_id("chk", now); |
| 547 | let mut results = report.results.clone(); |
| 548 | for result in &mut results { |
| 549 | result.command = format!("{} (merge queue, on {state})", result.command); |
| 550 | } |
| 551 | self.db |
| 552 | .batch(vec![ |
| 553 | self.db |
| 554 | .prepare( |
| 555 | "INSERT INTO check_runs |
| 556 | (id, pull_id, head_commit, status, results, error, token_hash, |
| 557 | created_at, finished_at) |
| 558 | VALUES (?, ?, ?, 'failed', ?, ?, ?, ?, ?)", |
| 559 | ) |
| 560 | .bind(&[ |
| 561 | run_id.as_str().into(), |
| 562 | pull.id.as_str().into(), |
| 563 | row.head_commit.as_deref().unwrap_or_default().into(), |
| 564 | serde_json::to_string(&results)?.into(), |
| 565 | why.as_str().into(), |
| 566 | hash(&new_token()).into(), |
| 567 | rfc3339(now).into(), |
| 568 | rfc3339(now).into(), |
| 569 | ])?, |
| 570 | self.db |
| 571 | .prepare("UPDATE pulls SET check_status = 'failed', check_run_id = ? WHERE id = ?") |
| 572 | .bind(&[run_id.as_str().into(), pull.id.as_str().into()])?, |
| 573 | ]) |
| 574 | .await?; |
| 575 | self.note( |
| 576 | &row.repo_id, |
| 577 | pull.number, |
| 578 | ("g1t", "g1t"), |
| 579 | &format!("was taken out of the merge queue. {why}"), |
| 580 | ) |
| 581 | .await?; |
| 582 | self.publish_as( |
| 583 | "checks.completed", |
| 584 | &row.repo_id, |
| 585 | None, |
| 586 | ChecksEvent { |
| 587 | pull_id: pull.id.clone(), |
| 588 | repo_id: row.repo_id.clone(), |
| 589 | number: pull.number, |
| 590 | status: "failed", |
| 591 | commit: row.head_commit.clone().unwrap_or_default(), |
| 592 | }, |
| 593 | ) |
| 594 | .await?; |
| 595 | Ok(()) |
| 596 | } |
| 597 | |
| 598 | /// Lands every entry at the front of the queue whose tested state |
| 599 | /// passed, in order. |
| 600 | async fn settle(&self, repo_id: &str) -> Result<()> { |
| 601 | let active = self.entries(repo_id, true).await?; |
| 602 | let Some(viewer) = active.first().and_then(EntryRow::actor) else { |
| 603 | return Ok(()); |
| 604 | }; |
| 605 | let repo: Outcome<Repo> = g1t_kit::call( |
| 606 | &self.repos, |
| 607 | "get_by_id", |
| 608 | &GetByIdArgs { |
| 609 | id: repo_id.to_owned(), |
| 610 | viewer: Some(viewer), |
| 611 | }, |
| 612 | ) |
| 613 | .await?; |
| 614 | let Outcome::Ok(repo) = repo else { |
| 615 | return Ok(()); |
| 616 | }; |
| 617 | for row in active { |
| 618 | if row.state() != QueueState::Passed { |
| 619 | // The front has not passed yet: nothing behind it may land. |
| 620 | return Ok(()); |
| 621 | } |
| 622 | let Some(pull) = self.pull_by_id(&row.pull_id).await? else { |
| 623 | continue; |
| 624 | }; |
| 625 | let Some(actor) = row.actor() else { |
| 626 | continue; |
| 627 | }; |
| 628 | // Pushed to since it was tested: test it again as it is now. |
| 629 | if pull.status != PullStatus::Open { |
| 630 | self.leave(repo_id, &pull, QueueState::Removed, Some("It was closed.")) |
| 631 | .await?; |
| 632 | continue; |
| 633 | } |
| 634 | let head: Option<String> = g1t_kit::call( |
| 635 | &self.repos, |
| 636 | "head", |
| 637 | &HeadArgs { |
| 638 | repo_id: pull.fork_repo_id.clone().unwrap_or_else(|| repo_id.to_owned()), |
| 639 | branch: pull.branch.clone().unwrap_or_else(|| repo.default_branch.clone()), |
| 640 | }, |
| 641 | ) |
| 642 | .await?; |
| 643 | if head.is_some() && head != row.head_commit { |
| 644 | let active = self.entries(repo_id, true).await?; |
| 645 | let again: Vec<&EntryRow> = active |
| 646 | .iter() |
| 647 | .filter(|other| other.id == row.id || other.ahead().contains(&row.number)) |
| 648 | .collect(); |
| 649 | self.retest(&again).await?; |
| 650 | return Ok(()); |
| 651 | } |
| 652 | let landed: Outcome<Landed> = g1t_kit::call( |
| 653 | &self.repos, |
| 654 | "land", |
| 655 | &LandArgs { |
| 656 | source_id: repo_id.to_owned(), |
| 657 | branch: Some(row.branch()), |
| 658 | actor: actor.clone(), |
| 659 | }, |
| 660 | ) |
| 661 | .await?; |
| 662 | let landed = match landed { |
| 663 | Outcome::Ok(landed) => landed, |
| 664 | Outcome::Fail(_) => { |
| 665 | // The default branch moved outside the queue: every |
| 666 | // tested state is built on something that is gone. |
| 667 | let active = self.entries(repo_id, true).await?; |
| 668 | let all: Vec<&EntryRow> = active.iter().collect(); |
| 669 | self.retest(&all).await?; |
| 670 | return Ok(()); |
| 671 | } |
| 672 | }; |
| 673 | self.db |
| 674 | .prepare( |
| 675 | "UPDATE queue_entries SET state = 'landed', finished_at = ? WHERE id = ?", |
| 676 | ) |
| 677 | .bind(&[rfc3339(now_ms()).into(), row.id.as_str().into()])? |
| 678 | .run() |
| 679 | .await?; |
| 680 | self.record_merge(&repo, pull, &actor, row.keep_issue_open != 0, landed) |
| 681 | .await?; |
| 682 | } |
| 683 | Ok(()) |
| 684 | } |
| 685 | } |