Files
mesh-catalog/modules/gitea/index.ts
T
jochen 85352c8d6f gitea: announce a merge once, from the poll
The merge tool announced pull.merged and so did the poll added for issue
131, so every merge made through the tool reached the controller twice.
The poll sees every path and carries the clone url; it is now the only
emitter. hq issue 250.
2026-10-05 17:39:01 +02:00

153 lines
7.1 KiB
TypeScript

// gitea's events. The tool runtime imports this once the broker is bound. It watches the forge and
// emits what appeared.
//
// Emits (novox/hq ADR 0041/0042):
// module.gitea.repo.created — a repository appeared, however it was made (push, web UI, or tool)
// module.gitea.pull.merged — a pull request was merged, however it was merged (web UI, API, or tool)
//
// issue.opened is emitted from its tool (tools/index.ts). repo.created and pull.merged belong here: a
// repository or a merge is as often made by the web UI or a plain API call, which no tool sees, so
// polling is the only way to catch every path — and the only emitter, so a fact is never announced
// twice. The merge tool announced too until novox/hq issue 250, and every merge it made was heard twice.
//
// The polling is deliberately unhurried: an event a minute late is still an event, whereas hammering
// the forge for an immediacy nobody asked for is not.
import { emit } from "@novox/mesh-sdk/events";
import { GiteaClient } from "./client.js";
// Without a way to a token — configured, or mintable with the admin account (token.ts) — there is
// nothing to watch; log and stay quiet rather than crash the runtime. With one, the first poll mints
// or reuses the token, so the runtime's start also shows what it did about it.
let gitea: GiteaClient | null = null;
try {
gitea = GiteaClient.fromEnv();
} catch (err) {
console.log(`[gitea] not watching — ${err instanceof Error ? err.message : String(err)}`);
}
// New repositories, by diffing the repo list. Primed silently on the first look, or a restart would
// re-announce every existing repository as freshly created.
const seen = new Set<string>();
let primed = false;
async function pollRepos(client: GiteaClient): Promise<void> {
const repos = await client.listAllRepos();
for (const repo of repos) {
if (!seen.has(repo.full_name)) {
if (primed) {
await emit("repo.created", {
full_name: repo.full_name,
owner: repo.owner,
name: repo.name,
private: repo.private,
html_url: repo.html_url,
});
}
seen.add(repo.full_name);
}
}
primed = true;
}
// **A merge is announced whoever made it.** The merge tool below emits at the instant it acts; a
// merge made in the forge's own pages or over its API would emit nothing, and the mesh would go on
// believing every module current with its source (novox/hq 04-ISSUES/131). So merged pull requests
// are watched the way repositories are: what the forge holds, asked for on a tick, announced once.
// What has been announced is kept beside the module's state, so a restart does not announce the
// whole history again — and the first tick on a machine with no record announces nothing, because
// everything it sees then predates the watching.
import { existsSync, mkdirSync, readFileSync, renameSync, writeFileSync } from "node:fs";
import { join } from "node:path";
const mergedRecord = process.env.MESH_GITEA_STATE_DIR ? join(process.env.MESH_GITEA_STATE_DIR, "merged-announced.json") : null;
const announced = new Set<string>();
let primedMerges = false;
// since is the moment the watching began: a merge made before it is history, whatever page of the
// forge's listing it surfaces on. Without it, an old merge past the first page — pushed into view
// as newer pull requests were updated — was announced as if it had just happened, and the mesh
// rebuilt everything built from that repository, once per old merge (2026-09-28).
let since = "";
if (mergedRecord && existsSync(mergedRecord)) {
try {
const kept = JSON.parse(readFileSync(mergedRecord, "utf8")) as string[] | { announced: string[]; since: string };
const list = Array.isArray(kept) ? kept : kept.announced;
for (const sha of list) announced.add(sha);
since = Array.isArray(kept) ? new Date().toISOString() : kept.since;
primedMerges = true;
} catch {
// An unreadable record is treated as no record: prime again rather than re-announce history.
}
}
function keepAnnounced(): void {
if (!mergedRecord) return;
mkdirSync(join(mergedRecord, ".."), { recursive: true });
const tmp = mergedRecord + ".tmp";
writeFileSync(tmp, JSON.stringify({ announced: [...announced].slice(-2000), since }));
renameSync(tmp, mergedRecord);
}
async function pollMerged(client: GiteaClient): Promise<void> {
const repos = await client.listAllRepos();
let changed = false;
for (const repo of repos) {
const pulls = await client.listPullRequests(repo.owner, repo.name, { state: "closed", sort: "recentupdate", limit: "20" });
for (const pull of pulls) {
if (!pull.merged || !pull.merge_commit_sha || announced.has(pull.merge_commit_sha)) continue;
// Announced only if merged since the watching began; recorded either way, so it is looked
// at once.
const fresh = !!pull.merged_at && !!since && pull.merged_at > since;
if (primedMerges && fresh) {
// What it changed, asked for only now: a module is rebuilt because a file inside its own
// directory moved, and without this every module built from a repository is rebuilt for a
// change to any of them (novox/hq 04-ISSUES/131).
const changed = await client.listPullFiles(repo.owner, repo.name, pull.number);
await emit("pull.merged", {
owner: repo.owner,
repo: repo.name,
number: pull.number,
title: pull.title,
head: pull.head,
base: pull.base,
merge_commit_sha: pull.merge_commit_sha,
merged_at: pull.merged_at,
clone_url: repo.clone_url,
html_url: pull.html_url,
paths: changed.paths,
paths_truncated: changed.truncated,
});
// Said, because a trigger that fires silently is indistinguishable from one that did not
// fire (novox/hq 04-ISSUES/131) — this line is how an operator knows the mesh was told.
console.log(`[gitea] announced merge ${repo.full_name}#${pull.number} (${pull.merge_commit_sha.slice(0, 8)}) into ${pull.base}`);
}
announced.add(pull.merge_commit_sha);
changed = true;
}
}
if (!primedMerges) since = new Date().toISOString();
if (!primedMerges || changed) keepAnnounced();
primedMerges = true;
}
if (gitea) {
const client = gitea;
// A poll that fails says so once, not once a minute: the same reason repeating (the forge not up
// yet, the admin account refused on a restored forge) is one fact, and a recovery is worth a line.
let failing: string | null = null;
const tick = (fn: () => Promise<void>, everyMs: number): void => {
const run = (): void =>
void fn()
.then(() => {
if (failing !== null) console.log("[gitea] watching again");
failing = null;
})
.catch((err) => {
const why = err instanceof Error ? err.message : String(err);
if (why !== failing) console.error(`[gitea] not watching until this clears — ${why}`);
failing = why;
});
setInterval(run, everyMs);
run();
};
tick(() => pollRepos(client), 60_000);
tick(() => pollMerged(client), 30_000);
console.log("[gitea] watching for new repositories and merged pull requests");
}