| 1 | import { ZERO_OID, mergeBase, mergeTrees, readCommit, serializeCommit } from "@diffinery/git-core"; |
| 2 | import { squashSig } from "./collab.js"; |
| 3 | import { ARCHIVED_REASON, automaticLandingRefusal } from "./auto-merge.js"; |
| 4 | import { requiredCheck } from "./required.js"; |
| 5 | import type { Actor } from "@diffinery/shared"; |
| 6 | import { HttpError, now } from "../lib/util.js"; |
| 7 | import type { RepoDO } from "./RepoDO.js"; |
| 8 | import type { Caller, MergeQueueSettings } from "./types.js"; |
| 9 | |
| 10 | type QueueRow = { |
| 11 | number: number; |
| 12 | base_ref: string; |
| 13 | seq: number; |
| 14 | head_sha: string; |
| 15 | method: "merge" | "squash" | "rebase"; |
| 16 | delete_branch: number; |
| 17 | enqueued_by: string; |
| 18 | enqueued_at: string; |
| 19 | parent_sha: string | null; |
| 20 | group_sha: string | null; |
| 21 | group_ref: string | null; |
| 22 | built_at: string | null; |
| 23 | }; |
| 24 | |
| 25 | export type QueueEntry = { |
| 26 | number: number; |
| 27 | title: string; |
| 28 | base: string; |
| 29 | position: number; |
| 30 | headSha: string; |
| 31 | method: QueueRow["method"]; |
| 32 | deleteBranch: boolean; |
| 33 | enqueuedBy: Actor; |
| 34 | enqueuedAt: string; |
| 35 | /** queued: waiting for its merge group to be built; checking: its merge group is running checks. */ |
| 36 | state: "queued" | "checking"; |
| 37 | groupRef: string | null; |
| 38 | groupSha: string | null; |
| 39 | parentSha: string | null; |
| 40 | builtAt: string | null; |
| 41 | checks: Array<{ name: string; state: string }>; |
| 42 | }; |
| 43 | |
| 44 | export type EnqueueResult = { state: "queued" | "merged" | "removed"; entry: QueueEntry | null; mergeCommit?: string | null; reason?: string }; |
| 45 | |
| 46 | /** Prefix of merge group branches, the same as GitHub's so existing `branches-ignore` filters keep working. */ |
| 47 | export const QUEUE_BRANCH_PREFIX = "gh-readonly-queue/"; |
| 48 | |
| 49 | export const QUEUE_BOT: Caller = { id: "system:merge-queue", login: "diffinery-merge-queue[bot]", kind: "system", role: "admin" }; |
| 50 | |
| 51 | const DEFAULT_CONCURRENCY = 5; |
| 52 | const DEFAULT_TIMEOUT_MINUTES = 60; |
| 53 | const OK = new Set(["success", "skipped", "neutral"]); |
| 54 | |
| 55 | /** Validates merge queue settings from the API or the settings page. */ |
| 56 | export function normalizeMergeQueue(q: MergeQueueSettings | boolean): MergeQueueSettings { |
| 57 | const o: MergeQueueSettings = typeof q === "object" && q ? q : {}; |
| 58 | const int = (v: unknown, min: number, max: number) => (Number.isFinite(Number(v)) ? Math.max(min, Math.min(max, Math.floor(Number(v)))) : undefined); |
| 59 | const out: MergeQueueSettings = { method: o.method === "squash" || o.method === "rebase" ? o.method : "merge" }; |
| 60 | const concurrency = int(o.buildConcurrency, 1, 20); |
| 61 | const timeout = int(o.checkTimeoutMinutes, 1, 360); |
| 62 | if (concurrency !== undefined) out.buildConcurrency = concurrency; |
| 63 | if (timeout !== undefined) out.checkTimeoutMinutes = timeout; |
| 64 | return out; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * A merge queue per protected base branch, like GitHub's. Each queued pull request |
| 69 | * gets a merge group: a commit on `gh-readonly-queue/<base>/pr-<n>-<head>` that holds |
| 70 | * the base branch, every pull request ahead of it, and its own changes. `merge_group` |
| 71 | * (and `push`) workflows run on that commit; once the required checks pass and every |
| 72 | * entry ahead has merged, the base branch fast-forwards to exactly the tested commit. |
| 73 | * A pull request whose group fails, conflicts or times out leaves the queue, and the |
| 74 | * groups behind it are rebuilt without it. |
| 75 | */ |
| 76 | export class MergeQueue { |
| 77 | private lock: Promise<unknown> = Promise.resolve(); |
| 78 | /** Why each pull request last left a queue (kept in memory for the enqueue response). */ |
| 79 | private removals = new Map<number, string>(); |
| 80 | |
| 81 | constructor(private repo: RepoDO) {} |
| 82 | |
| 83 | private get sql() { |
| 84 | return this.repo.sql; |
| 85 | } |
| 86 | |
| 87 | settings(base: string): MergeQueueSettings | null { |
| 88 | return this.repo.protectionFor(base)?.mergeQueue ?? null; |
| 89 | } |
| 90 | |
| 91 | private rows(base?: string): QueueRow[] { |
| 92 | return base |
| 93 | ? this.sql.exec<QueueRow>("SELECT * FROM merge_queue WHERE base_ref = ? ORDER BY seq", base).toArray() |
| 94 | : this.sql.exec<QueueRow>("SELECT * FROM merge_queue ORDER BY base_ref, seq").toArray(); |
| 95 | } |
| 96 | |
| 97 | private row(number: number): QueueRow | null { |
| 98 | return this.sql.exec<QueueRow>("SELECT * FROM merge_queue WHERE number = ?", number).toArray()[0] ?? null; |
| 99 | } |
| 100 | |
| 101 | isQueued(number: number): boolean { |
| 102 | return this.row(number) !== null; |
| 103 | } |
| 104 | |
| 105 | /** The base branch whose queue holds the merge group on `sha`, if any. */ |
| 106 | baseForGroup(sha: string): string | null { |
| 107 | return this.sql.exec<{ base_ref: string }>("SELECT base_ref FROM merge_queue WHERE group_sha = ?", sha).toArray()[0]?.base_ref ?? null; |
| 108 | } |
| 109 | |
| 110 | hasEntries(base: string): boolean { |
| 111 | return this.sql.exec<{ n: number }>("SELECT count(*) AS n FROM merge_queue WHERE base_ref = ?", base).one().n > 0; |
| 112 | } |
| 113 | |
| 114 | list(base?: string): QueueEntry[] { |
| 115 | const out: QueueEntry[] = []; |
| 116 | const position = new Map<string, number>(); |
| 117 | for (const r of this.rows(base)) { |
| 118 | const pos = (position.get(r.base_ref) ?? 0) + 1; |
| 119 | position.set(r.base_ref, pos); |
| 120 | const title = this.sql.exec<{ title: string }>("SELECT title FROM issues WHERE number = ?", r.number).toArray()[0]?.title ?? ""; |
| 121 | const rules = this.repo.protectionFor(r.base_ref); |
| 122 | const required = rules?.requiredChecks ?? []; |
| 123 | const checks = r.group_sha ? this.repo.checksAndStatuses(r.group_sha) : []; |
| 124 | out.push({ |
| 125 | number: r.number, |
| 126 | title, |
| 127 | base: r.base_ref, |
| 128 | position: pos, |
| 129 | headSha: r.head_sha, |
| 130 | method: r.method, |
| 131 | deleteBranch: !!r.delete_branch, |
| 132 | enqueuedBy: JSON.parse(r.enqueued_by) as Actor, |
| 133 | enqueuedAt: r.enqueued_at, |
| 134 | state: r.group_sha ? "checking" : "queued", |
| 135 | groupRef: r.group_ref, |
| 136 | groupSha: r.group_sha, |
| 137 | parentSha: r.parent_sha, |
| 138 | builtAt: r.built_at, |
| 139 | checks: (required.length ? required : [...new Set(checks.map((c) => c.name))]).map((name) => { |
| 140 | const c = requiredCheck(name, checks, rules?.requiredCheckSources?.[name]); |
| 141 | return { name, state: c.state === "missing" ? "expected" : c.state === "pending" ? (c.status ?? "queued") : (c.conclusion ?? "neutral") }; |
| 142 | }), |
| 143 | }); |
| 144 | } |
| 145 | return out; |
| 146 | } |
| 147 | |
| 148 | entry(number: number): QueueEntry | null { |
| 149 | const r = this.row(number); |
| 150 | return r ? (this.list(r.base_ref).find((e) => e.number === number) ?? null) : null; |
| 151 | } |
| 152 | |
| 153 | /** Add a pull request to its base branch's queue ("Merge when ready"). */ |
| 154 | async enqueue(number: number, input: { method?: QueueRow["method"]; deleteBranch?: boolean }, caller: Caller): Promise<EnqueueResult> { |
| 155 | const { issue } = this.repo.collab.get(number); |
| 156 | const pull = issue.pull; |
| 157 | if (!pull) throw new HttpError(422, `#${number} is not a pull request`); |
| 158 | if (await this.repo.isArchived()) throw new HttpError(403, "repository is archived (read-only)"); |
| 159 | const settings = this.settings(pull.base); |
| 160 | if (!settings) throw new HttpError(422, `${pull.base} does not use a merge queue; merge the pull request directly`); |
| 161 | if (this.row(number)) return this.result(number); |
| 162 | // The queue lands the pull request for whoever enqueued it: agents and workflow tokens only where the branch allows it. |
| 163 | const refusal = automaticLandingRefusal(caller, this.repo.protectionFor(pull.base), pull.base === this.repo.meta.defaultBranch, pull.base); |
| 164 | if (refusal) throw new HttpError(refusal.status, refusal.message); |
| 165 | const m = await this.repo.collab.mergeability(number, caller, { automatic: true }); |
| 166 | if (!m.mergeable) throw new HttpError(405, `pull request cannot be added to the merge queue: ${m.blockers.join("; ")}`, { blockers: m.blockers }); |
| 167 | const method = input.method ?? settings.method ?? "merge"; |
| 168 | if (method === "merge" && this.repo.protectionFor(pull.base)?.requireLinearHistory) throw new HttpError(422, `${pull.base} requires linear history; use squash or rebase`); |
| 169 | this.sql.exec("INSERT INTO counters (name, value) VALUES ('queue', 1) ON CONFLICT(name) DO UPDATE SET value = value + 1"); |
| 170 | const seq = this.sql.exec<{ value: number }>("SELECT value FROM counters WHERE name = 'queue'").one().value; |
| 171 | this.sql.exec( |
| 172 | "INSERT INTO merge_queue (number, base_ref, seq, head_sha, method, delete_branch, enqueued_by, enqueued_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?)", |
| 173 | number, |
| 174 | pull.base, |
| 175 | seq, |
| 176 | pull.headSha, |
| 177 | method, |
| 178 | input.deleteBranch ? 1 : 0, |
| 179 | JSON.stringify({ id: caller.id, login: caller.login, kind: caller.kind, onBehalfOf: caller.onBehalfOf }), |
| 180 | now(), |
| 181 | ); |
| 182 | this.emit(number, "enqueued", caller); |
| 183 | await this.process(pull.base); |
| 184 | return this.result(number); |
| 185 | } |
| 186 | |
| 187 | /** Where a pull request stands after a queue pass: still queued, merged, or removed (and why). */ |
| 188 | private result(number: number): EnqueueResult { |
| 189 | const entry = this.entry(number); |
| 190 | if (entry) return { state: "queued", entry }; |
| 191 | const merged = this.sql.exec<{ merge_commit: string | null; merged: number }>("SELECT merged, merge_commit FROM pulls WHERE number = ?", number).toArray()[0]; |
| 192 | if (merged?.merged) return { state: "merged", entry: null, mergeCommit: merged.merge_commit }; |
| 193 | return { state: "removed", entry: null, reason: this.removals.get(number) }; |
| 194 | } |
| 195 | |
| 196 | /** Remove a pull request from the queue at a person's request. */ |
| 197 | async dequeue(number: number, caller: Caller): Promise<void> { |
| 198 | const r = this.row(number); |
| 199 | if (!r) throw new HttpError(404, `#${number} is not in the merge queue`); |
| 200 | await this.exclusive(async () => { |
| 201 | const row = this.row(number); |
| 202 | if (row) await this.remove(row, `${caller.login} removed it from the queue`, caller, false); |
| 203 | }); |
| 204 | await this.process(r.base_ref); |
| 205 | } |
| 206 | |
| 207 | /** The repository was archived: nothing merges any more, so every queue is emptied, saying why on each pull request. */ |
| 208 | repositoryArchived(): Promise<void> { |
| 209 | return this.exclusive(async () => { |
| 210 | for (const r of this.rows()) await this.remove(r, ARCHIVED_REASON); |
| 211 | this.armAlarm(); |
| 212 | }); |
| 213 | } |
| 214 | |
| 215 | /** Re-evaluate in the background (after checks, pushes and pull request changes). */ |
| 216 | schedule(base?: string): void { |
| 217 | this.repo.background(this.process(base)); |
| 218 | } |
| 219 | |
| 220 | /** Advance one queue, or every queue: merge, drop failures, rebuild and build merge groups. */ |
| 221 | process(base?: string): Promise<void> { |
| 222 | return this.exclusive(async () => { |
| 223 | const bases = base ? [base] : [...new Set(this.rows().map((r) => r.base_ref))]; |
| 224 | for (const b of bases) { |
| 225 | try { |
| 226 | await this.step(b); |
| 227 | } catch (e) { |
| 228 | console.error(`merge queue for ${b} failed`, e); |
| 229 | } |
| 230 | } |
| 231 | this.armAlarm(); |
| 232 | }); |
| 233 | } |
| 234 | |
| 235 | private exclusive<T>(fn: () => Promise<T>): Promise<T> { |
| 236 | const run = this.lock.then(fn, fn); |
| 237 | this.lock = run.catch(() => undefined); |
| 238 | return run; |
| 239 | } |
| 240 | |
| 241 | private async step(base: string): Promise<void> { |
| 242 | const settings = this.settings(base); |
| 243 | const baseRef = `refs/heads/${base}`; |
| 244 | // An archived repository is read-only: a merge group's check that finishes after the archive merges nothing. |
| 245 | const archived = await this.repo.isArchived(); |
| 246 | for (const r of this.rows(base)) { |
| 247 | if (archived) await this.remove(r, ARCHIVED_REASON); |
| 248 | else if (!settings) await this.remove(r, `${base} no longer uses a merge queue`); |
| 249 | else if (!this.repo.getRef(baseRef)) await this.remove(r, `the base branch ${base} no longer exists`); |
| 250 | else { |
| 251 | const p = this.sql.exec<{ head_sha: string; merged: number; state: string }>("SELECT p.head_sha, p.merged, i.state FROM pulls p JOIN issues i ON i.number = p.number WHERE p.number = ?", r.number).toArray()[0]; |
| 252 | if (!p || p.merged || p.state !== "open") await this.remove(r, "the pull request was closed", undefined, false); |
| 253 | else if (p.head_sha !== r.head_sha) await this.remove(r, "new commits were pushed to its branch"); |
| 254 | } |
| 255 | } |
| 256 | if (!settings || archived) return; |
| 257 | |
| 258 | // Merge from the front: the front group is built on the current base and its checks passed. |
| 259 | for (;;) { |
| 260 | const front = this.rows(base)[0]; |
| 261 | const baseSha = this.repo.getRef(baseRef); |
| 262 | if (!front?.group_sha || !baseSha || front.parent_sha !== baseSha) break; |
| 263 | const verdict = this.verdict(front, base, settings); |
| 264 | if (verdict === "pending") break; |
| 265 | if (verdict !== "pass") { |
| 266 | await this.remove(front, verdict); |
| 267 | continue; |
| 268 | } |
| 269 | if (!this.repo.casRef(baseRef, baseSha, front.group_sha)) break; |
| 270 | this.sql.exec("DELETE FROM merge_queue WHERE number = ?", front.number); |
| 271 | // The group's commit is now the base branch; its runs (on the deleted branch) may finish. |
| 272 | await this.dropGroup(front, { cancel: false }); |
| 273 | const by = JSON.parse(front.enqueued_by) as Actor; |
| 274 | await this.repo.collab.completeMerge(front.number, front.group_sha, baseSha, { ...by, role: "admin" }, !!front.delete_branch); |
| 275 | } |
| 276 | |
| 277 | // Each group must sit on the one ahead of it (the first on the base branch). Groups whose |
| 278 | // checks failed leave the queue; anything built on a group that changed is rebuilt. |
| 279 | let expected = this.repo.getRef(baseRef)!; |
| 280 | let built = 0; |
| 281 | let blocked = false; |
| 282 | const limit = Math.max(1, Math.min(20, settings.buildConcurrency ?? DEFAULT_CONCURRENCY)); |
| 283 | for (const r of this.rows(base)) { |
| 284 | if (!blocked && r.group_sha && r.parent_sha === expected) { |
| 285 | const verdict = this.verdict(r, base, settings); |
| 286 | if (verdict !== "pass" && verdict !== "pending") { |
| 287 | await this.remove(r, verdict); |
| 288 | continue; |
| 289 | } |
| 290 | expected = r.group_sha; |
| 291 | built++; |
| 292 | continue; |
| 293 | } |
| 294 | if (r.group_sha) await this.dropGroup(r, { reset: true }); |
| 295 | if (blocked || built >= limit) { |
| 296 | blocked = true; |
| 297 | continue; |
| 298 | } |
| 299 | const group = await this.build(r, expected); |
| 300 | if ("error" in group) { |
| 301 | await this.remove(r, group.error); |
| 302 | continue; |
| 303 | } |
| 304 | expected = group.sha; |
| 305 | built++; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | /** "pass", "pending", or why the group failed. */ |
| 310 | private verdict(r: QueueRow, base: string, settings: MergeQueueSettings): string { |
| 311 | const rules = this.repo.protectionFor(base); |
| 312 | const required = rules?.requiredChecks ?? []; |
| 313 | const checks = this.repo.checksAndStatuses(r.group_sha!); |
| 314 | for (const name of required) { |
| 315 | const c = requiredCheck(name, checks, rules?.requiredCheckSources?.[name]); |
| 316 | if (c.state === "failure") { |
| 317 | const what = c.conclusion === "timed_out" ? "timed out" : c.conclusion === "cancelled" ? "was cancelled" : c.conclusion === "action_required" ? "needs action" : "failed"; |
| 318 | return `the required check '${name}' ${what} on its merge group`; |
| 319 | } |
| 320 | } |
| 321 | const pending = required.filter((name) => requiredCheck(name, checks, rules?.requiredCheckSources?.[name]).state !== "success"); |
| 322 | if (!pending.length) return "pass"; |
| 323 | const timeout = (settings.checkTimeoutMinutes ?? DEFAULT_TIMEOUT_MINUTES) * 60_000; |
| 324 | if (r.built_at && Date.parse(r.built_at) + timeout <= Date.now()) { |
| 325 | return `required checks did not finish within ${settings.checkTimeoutMinutes ?? DEFAULT_TIMEOUT_MINUTES} minutes (${pending.map((n) => `'${n}'`).join(", ")})`; |
| 326 | } |
| 327 | return "pending"; |
| 328 | } |
| 329 | |
| 330 | /** Build the merge group of `r` on `parent`, create its branch and start its workflows. */ |
| 331 | private async build(r: QueueRow, parent: string): Promise<{ sha: string } | { error: string }> { |
| 332 | const store = this.repo.store; |
| 333 | const { issue } = this.repo.collab.get(r.number); |
| 334 | const pull = issue.pull!; |
| 335 | const by = JSON.parse(r.enqueued_by) as Actor; |
| 336 | const ts = Math.floor(Date.now() / 1000); |
| 337 | const committer = { name: by.login, email: `${by.login}@users.noreply.diffinery.com`, timestamp: ts, timezone: "+0000" }; |
| 338 | let sha: string; |
| 339 | if (r.method === "rebase") { |
| 340 | let cur = parent; |
| 341 | for (const c of await this.repo.collab.pullCommits(r.number)) { |
| 342 | if (c.parents.length !== 1) return { error: "rebase merges cannot include merge commits; use a merge commit or squash" }; |
| 343 | const [p, mine, theirs] = await Promise.all([readCommit(store, c.parents[0]!), readCommit(store, cur), readCommit(store, c.sha)]); |
| 344 | const merged = await mergeTrees(store, p.tree, mine.tree, theirs.tree); |
| 345 | if (merged.conflicts.length || !merged.tree) return { error: `it conflicts with ${pull.base} and the pull requests ahead of it (${merged.conflicts.slice(0, 5).join(", ")})` }; |
| 346 | cur = await store.write("commit", serializeCommit({ tree: merged.tree, parents: [cur], author: theirs.author, committer, message: theirs.message, extraHeaders: theirs.extraHeaders })); |
| 347 | } |
| 348 | sha = cur; |
| 349 | } else { |
| 350 | const mb = await mergeBase(store, parent, r.head_sha); |
| 351 | const [pt, ht, bt] = await Promise.all([readCommit(store, parent), readCommit(store, r.head_sha), mb ? readCommit(store, mb) : null]); |
| 352 | const merged = await mergeTrees(store, bt?.tree ?? null, pt.tree, ht.tree); |
| 353 | if (merged.conflicts.length || !merged.tree) return { error: `it conflicts with ${pull.base} and the pull requests ahead of it (${merged.conflicts.slice(0, 5).join(", ")})` }; |
| 354 | const message = |
| 355 | r.method === "squash" |
| 356 | ? `${issue.title} (#${r.number})\n\n${(await this.repo.collab.pullCommits(r.number)).map((c) => `* ${c.message.split("\n")[0]}`).join("\n")}\n` |
| 357 | : `Merge pull request #${r.number} from ${pull.head}\n\n${issue.title}\n`; |
| 358 | const author = r.method === "squash" ? squashSig(issue.author, committer) : committer; |
| 359 | sha = await store.write("commit", serializeCommit({ tree: merged.tree, parents: r.method === "squash" ? [parent] : [parent, r.head_sha], author, committer, message })); |
| 360 | } |
| 361 | const ref = `refs/heads/${QUEUE_BRANCH_PREFIX}${pull.base}/pr-${r.number}-${r.head_sha}`; |
| 362 | const old = this.repo.getRef(ref); |
| 363 | this.repo.casRef(ref, old, sha); |
| 364 | this.sql.exec("UPDATE merge_queue SET parent_sha = ?, group_sha = ?, group_ref = ?, built_at = ? WHERE number = ?", parent, sha, ref, now(), r.number); |
| 365 | // GitHub runs push workflows on merge group branches too, then merge_group workflows. |
| 366 | await this.repo.afterRefUpdate(ref, old ?? ZERO_OID, sha, QUEUE_BOT); |
| 367 | await this.repo.actions.onMergeGroup({ number: r.number, base: pull.base, ref, sha, parent, title: issue.title, sender: by }); |
| 368 | this.repo.broadcast(`pr:${r.number}`, { action: "queue" }); |
| 369 | return { sha }; |
| 370 | } |
| 371 | |
| 372 | /** Delete a group's branch and (unless it merged) cancel its runs; `reset` keeps the entry queued for a rebuild. */ |
| 373 | private async dropGroup(r: QueueRow, o: { reset?: boolean; cancel?: boolean } = {}): Promise<void> { |
| 374 | if (r.group_ref) { |
| 375 | if (o.cancel !== false) await this.repo.actions.cancelRunsOnRef(r.group_ref, "Cancelled because its merge group was rebuilt or left the queue."); |
| 376 | const sha = this.repo.getRef(r.group_ref); |
| 377 | if (sha && this.repo.casRef(r.group_ref, sha, null)) await this.repo.afterRefUpdate(r.group_ref, sha, ZERO_OID, QUEUE_BOT); |
| 378 | } |
| 379 | if (o.reset) this.sql.exec("UPDATE merge_queue SET parent_sha = NULL, group_sha = NULL, group_ref = NULL, built_at = NULL WHERE number = ?", r.number); |
| 380 | } |
| 381 | |
| 382 | private async remove(r: QueueRow, reason: string, by: Caller = QUEUE_BOT, comment = true): Promise<void> { |
| 383 | this.sql.exec("DELETE FROM merge_queue WHERE number = ?", r.number); |
| 384 | await this.dropGroup(r); |
| 385 | this.removals.set(r.number, reason); |
| 386 | this.emit(r.number, "dequeued", by); |
| 387 | if (comment) { |
| 388 | try { |
| 389 | this.repo.collab.addComment(r.number, `This pull request was removed from the merge queue: ${reason}.`, QUEUE_BOT); |
| 390 | } catch (e) { |
| 391 | console.warn("merge queue comment failed", e); |
| 392 | } |
| 393 | } |
| 394 | this.repo.broadcast(`pr:${r.number}`, { action: "queue" }); |
| 395 | } |
| 396 | |
| 397 | private emit(number: number, action: "enqueued" | "dequeued", by: Caller | Actor): void { |
| 398 | const p = this.sql.exec<{ head_ref: string; head_sha: string; base_ref: string }>("SELECT head_ref, head_sha, base_ref FROM pulls WHERE number = ?", number).toArray()[0]; |
| 399 | if (!p) return; |
| 400 | const m = this.repo.meta; |
| 401 | this.repo.emit({ type: "pull_request", action, repoId: m.repoId, owner: m.owner, repo: m.name, number, headRef: p.head_ref, headSha: p.head_sha, baseRef: p.base_ref, actor: { id: by.id, login: by.login, kind: by.kind, onBehalfOf: by.onBehalfOf }, at: now() }); |
| 402 | } |
| 403 | |
| 404 | /** Wake up when the earliest check timeout of a building group runs out. */ |
| 405 | private armAlarm(): void { |
| 406 | let next = Infinity; |
| 407 | for (const r of this.rows()) { |
| 408 | if (!r.built_at) continue; |
| 409 | const minutes = this.settings(r.base_ref)?.checkTimeoutMinutes ?? DEFAULT_TIMEOUT_MINUTES; |
| 410 | next = Math.min(next, Date.parse(r.built_at) + minutes * 60_000 + 1000); |
| 411 | } |
| 412 | this.repo.armAlarm(Number.isFinite(next) ? next : null); |
| 413 | } |
| 414 | } |