fix: prevent migration timeout overrides
pg-connection-string retains arbitrary query keys, so the driver's own configuration key connectionTimeoutMillis reaches ConnectionParameters straight from a URL — and it was not on the rejected list, while spellings that do nothing were. Rejecting it closes that gap. The precedence claims that guard was built on were partly wrong, so every source was measured against the installed [email protected].0, a real blackhole listener, and a real PostgreSQL rather than inferred from the merge: statement_timeout=0 / =900000 server reported 0 and 15min — wins outright query_timeout=0 overrides the field, but the parsed value is the string "0", which is truthy, so every query gets a 0 ms read timer and fails nondeterministically — it breaks the client rather than loosening the bound connectionTimeoutMillis=0/900000 pollutes connectionParameters.connect_timeout (10 -> 0 or 900 s), but that field only feeds getLibpqConnectionString(), which the pure-JS client never calls; the effective timer was unchanged, with an explicit 500 ms still expiring at ~500 ms either way connect_timeout=0 no effect: recomputed from the explicit field options=-c statement_timeout=… no effect, including a backslash-escaped spelling — the named startup parameter wins PGOPTIONS / PGCONNECT_TIMEOUT no effect unrelated parameters no effect, deliberately untouched Only statement_timeout is a genuine downgrade. The rest are rejected as unsupported configuration and defense in depth: no legitimate DATABASE_URL carries a driver option, the polluted connect_timeout would take effect on the native binding, and query_timeout produces intermittent failures an operator could not diagnose. That distinction is now stated where it was previously asserted wrongly — the earlier comment and ADR text claimed connect_timeout overrode the explicit field, which measurement disproved. Rejection still happens at the one shared construction boundary, before any pg.Client exists, with the existing fixed POSTGRES_MIGRATION_CONFIGURATION_INVALID and no URL, host, port, credential, parameter, or value in the message. The 10 s defaults, narrower test overrides, Pass 2 TLS policy and its URL-conflict checks, and every unrelated parameter are unchanged. Co-Authored-By: Claude Opus 5 <[email protected]>
This commit is contained in:
ekklesia
co-authored by
Claude Opus 5
Claude Opus 5
parent
74e8840f0d
commit
6912680113
@@ -94,20 +94,46 @@ export const MIGRATION_CONNECTION_TIMEOUT_MS = 10_000;
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export const MIGRATION_OPERATION_TIMEOUT_MS = 10_000;
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/**
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* Connection-string parameters the pinned `[email protected]` would let silently override the timeouts
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* selected above. Its `ConnectionParameters` merges as
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* `Object.assign({}, config, parse(config.connectionString))`, so the **URL wins** over explicitly
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* passed options — verified directly against the pinned driver, where an explicit
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* `statement_timeout: 10000` alongside `?statement_timeout=0` produced a server-reported
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* `statement_timeout` of `0`. Rejecting these is therefore not stylistic: without it the policy
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* above is advisory.
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* Connection-string parameters that must not reach the pinned driver, established by measuring the
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* installed `[email protected]`/`[email protected]` against a real PostgreSQL and a real
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* blackhole listener rather than by reading the merge and assuming.
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*
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* Deliberately narrow — only settings that actually conflict with the timeouts this boundary
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* selects. `options` is included solely because it can carry `-c statement_timeout=...`, and is
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* rejected only when it does.
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* `ConnectionParameters` merges as `Object.assign({}, config, parse(config.connectionString))` and
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* `pg-connection-string` retains *arbitrary* query keys, so any of these lands in the driver's
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* configuration. What each one actually does differs, and only the first genuinely weakens policy:
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*
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* - `statement_timeout` — **wins outright.** `?statement_timeout=0` produced a server-reported
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* `statement_timeout` of `0` (disabled) and `?statement_timeout=900000` produced `15min`, against
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* an explicit `statement_timeout: 10000`. This is the one real downgrade.
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* - `query_timeout` — overrides the explicit field, but does not weaken the bound; it breaks the
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* client. `client.query` computes its read timer as
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* `queryConfig.query_timeout || connectionParameters.query_timeout`, and the parsed URL value is
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* the *string* `"0"` — truthy — so every query gets a 0 ms read timer and fails
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* nondeterministically with `Query read timeout`. Rejected so an operator gets a fixed
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* configuration error instead of intermittent, unexplained query failures.
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* - `connectionTimeoutMillis` — pollutes `ConnectionParameters.connect_timeout` (10 → `0` or `900`
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* seconds), but that field is only consumed by `getLibpqConnectionString()`, which the pure-JS
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* client never calls. Measured against a blackhole listener, the effective connect timer is
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* **unchanged**: an explicit 500 ms still expired at ~500 ms with `?connectionTimeoutMillis=0`
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* and with `=900000`. Rejected as unsupported and as defense in depth — no legitimate
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* `DATABASE_URL` carries a driver option, and the polluted value would take effect on the native
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* binding — not because it currently defeats the deadline.
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* - `connect_timeout` — no effect at all: `ConnectionParameters` recomputes it from
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* `connectionTimeoutMillis`, so `?connect_timeout=0` left it at the derived `10`. Rejected as
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* unsupported; earlier revisions of this comment wrongly claimed it overrode the explicit field.
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* - `options` carrying `statement_timeout` — measured **not** to override the named startup
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* parameter: `?options=-c statement_timeout=0`, `=900s`, and a backslash-escaped spelling all
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* still produced `10s`, as did an inherited `PGOPTIONS`. Rejected as unsupported rather than
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* because it wins.
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*
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* Deliberately narrow: unrelated parameters (`application_name`, and anything else that does not
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* name a timeout this boundary selects) are untouched. `PGCONNECT_TIMEOUT` needs no handling — the
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* driver consults it only when `connectionTimeoutMillis` is `undefined`, and this boundary always
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* sets it; an inherited `PGCONNECT_TIMEOUT=0` was measured to change nothing.
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*/
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const CONFLICTING_TIMEOUT_PARAMETERS = Object.freeze([
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"connect_timeout",
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"connectiontimeoutmillis",
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"query_timeout",
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"statement_timeout",
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]);
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@@ -219,3 +219,80 @@ describe("PostgreSQL migration timeout policy", () => {
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await session.close();
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});
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});
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/**
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* Pass 4 correction: `pg-connection-string` retains *arbitrary* query keys, so the driver's own
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* configuration key `connectionTimeoutMillis` reaches `ConnectionParameters` from a URL. It was not
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* on the rejected list. These pin the corrected boundary; the measured effect of each key on the
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* real driver and a real server lives in `core/tests/postgres-migration.integration.ts`.
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*/
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describe("PostgreSQL migration timeout precedence", () => {
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it.each([
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=0",
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=900000",
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=",
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=-1",
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=abc",
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"postgresql://example.test/ekklesia?CONNECTIONTIMEOUTMILLIS=0",
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"postgresql://example.test/ekklesia?connectiontimeoutmillis=0",
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])("refuses the driver's own connectionTimeoutMillis key in a URL (%s)", (databaseUrl) => {
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const constructionsBefore = clientConstructor.mock.calls.length;
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let captured: unknown;
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try {
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createPostgresMigrationDatabase(databaseUrl);
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} catch (error) {
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captured = error;
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}
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expect(captured).toBeInstanceOf(PostgresMigrationDatabaseError);
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expect(captured).toMatchObject({ code: "POSTGRES_MIGRATION_CONFIGURATION_INVALID" });
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// Rejected before any client exists, so no connection is ever attempted.
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expect(clientConstructor.mock.calls.length).toBe(constructionsBefore);
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const publicText = `${String(captured)}\n${
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captured instanceof Error ? (captured.stack ?? "") : ""
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}`;
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expect(publicText).not.toContain("example.test");
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expect(publicText).not.toContain("connectionTimeoutMillis");
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expect(publicText).not.toContain("900000");
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});
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it("also refuses it alongside a narrower explicit test override", () => {
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let captured: unknown;
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try {
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createPostgresMigrationDatabase(
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"postgresql://example.test/ekklesia?connectionTimeoutMillis=0",
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{ connectionTimeoutMs: 300, operationTimeoutMs: 300 },
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);
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} catch (error) {
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captured = error;
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}
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expect(captured).toMatchObject({ code: "POSTGRES_MIGRATION_CONFIGURATION_INVALID" });
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});
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it("still accepts unrelated parameters and produces the exact expected client configuration", async () => {
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const client = {
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connect: vi.fn().mockResolvedValue(undefined),
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end: vi.fn().mockResolvedValue(undefined),
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on: vi.fn(),
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};
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clientConstructor.mockImplementation(
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class {
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readonly connect = client.connect;
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readonly end = client.end;
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readonly on = client.on;
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} as unknown as () => typeof client,
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);
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const url = "postgresql://example.test/ekklesia?application_name=ekklesia&lock_timeout=5000";
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const session = await createPostgresMigrationDatabase(url).openSession();
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expect(clientConstructor).toHaveBeenLastCalledWith({
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connectionString: url,
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connectionTimeoutMillis: MIGRATION_CONNECTION_TIMEOUT_MS,
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query_timeout: MIGRATION_OPERATION_TIMEOUT_MS,
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statement_timeout: MIGRATION_OPERATION_TIMEOUT_MS,
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});
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await session.close();
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});
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});
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@@ -1635,3 +1635,219 @@ describe.sequential("live PostgreSQL migration command hardening", () => {
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});
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});
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});
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/**
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* Pass 4 correction: what each timeout-shaped connection-string key and inherited environment
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* variable *actually* does to the pinned `[email protected]`, measured rather than inferred from its merge.
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*
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* The distinction matters: the boundary rejects several keys, but only one of them genuinely
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* weakens the selected policy. Documenting a key as "overrides the explicit field" when it does not
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* is the kind of claim this suite exists to prevent.
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*
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* Every listener, socket, client, and disposable database is closed in `finally`.
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*/
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describe.sequential("live PostgreSQL migration timeout precedence", () => {
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const productionClientFields = Object.freeze({
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connectionTimeoutMillis: 10_000,
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query_timeout: 10_000,
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statement_timeout: 10_000,
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});
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it("does not let a URL weaken the effective connect timer, whichever spelling is used", async () => {
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const sockets: net.Socket[] = [];
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const listener = net.createServer((socket) => {
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sockets.push(socket);
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});
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try {
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await new Promise<void>((resolve, reject) => {
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listener.once("error", reject);
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listener.listen(0, "127.0.0.1", () => resolve());
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});
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const address = listener.address();
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if (!address || typeof address !== "object") {
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throw harnessError("The blackhole listener has no bound address.");
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}
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const base = `postgresql://ekklesia:[email protected]:${address.port}/ekklesia`;
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// A short explicit deadline stands in for the production 10 s so the measurement is fast.
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for (const query of [
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"",
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"?connectionTimeoutMillis=0",
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"?connectionTimeoutMillis=900000",
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"?connect_timeout=0",
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]) {
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const client = new Client({
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connectionString: `${base}${query}`,
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connectionTimeoutMillis: 500,
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});
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client.on("error", () => undefined);
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const startedAt = Date.now();
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let settled = false;
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try {
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await client.connect();
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} catch {
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settled = true;
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}
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const elapsed = Date.now() - startedAt;
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try {
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await client.end();
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} catch {
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// Already unusable.
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}
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// The pure-JS client reads `connectionTimeoutMillis` from the object handed to its
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// constructor, before any connection-string merge; the merged value only reaches
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// `ConnectionParameters.connect_timeout`, which solely feeds `getLibpqConnectionString()`.
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expect(settled, `expected the connect timer to fire for ${JSON.stringify(query)}`).toBe(
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true,
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);
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expect(elapsed, `unexpected timer for ${JSON.stringify(query)}`).toBeLessThan(3_000);
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}
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// ...but the driver-visible field really is polluted, which is why the boundary rejects the
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// key rather than relying on the pure-JS path staying this way. `connectionParameters` is
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// real on the pinned client but absent from its published types, so it is read through a
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// narrow structural view rather than asserted away.
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const connectTimeoutOf = (connectionString: string): string => {
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const client = new Client({ connectionString, ...productionClientFields }) as unknown as {
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readonly connectionParameters: { readonly connect_timeout: unknown };
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};
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(client as unknown as Client).on("error", () => undefined);
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return String(client.connectionParameters.connect_timeout);
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};
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expect(connectTimeoutOf(`${base}?connectionTimeoutMillis=0`)).toBe("0");
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expect(connectTimeoutOf(base)).toBe("10");
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} finally {
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for (const socket of sockets) {
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socket.destroy();
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}
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await new Promise<void>((resolve) => {
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listener.close(() => resolve());
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});
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}
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});
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it("records what each timeout source does to the real server's statement_timeout", async () => {
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await withIsolatedDatabase("timeout_sources", async (database) => {
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async function effectiveStatementTimeout(
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query: string,
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environment: Readonly<Record<string, string>> = {},
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): Promise<string> {
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const saved = new Map<string, string | undefined>();
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for (const [key, value] of Object.entries(environment)) {
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saved.set(key, process.env[key]);
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process.env[key] = value;
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}
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const client = new Client({
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connectionString: `${database.url}${query}`,
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...productionClientFields,
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});
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client.on("error", () => undefined);
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try {
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await client.connect();
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const result = await client.query<{ statement_timeout: string }>(
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"show statement_timeout",
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);
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return result.rows[0]?.statement_timeout ?? "unknown";
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} catch {
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return "connection failed";
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} finally {
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try {
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await client.end();
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} catch {
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// Already unusable.
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}
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for (const [key, value] of saved) {
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if (value === undefined) {
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delete process.env[key];
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} else {
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process.env[key] = value;
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}
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}
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}
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}
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// The baseline the policy selects.
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expect(await effectiveStatementTimeout("")).toBe("10s");
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// The one key that genuinely wins, and the reason it must stay rejected.
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expect(await effectiveStatementTimeout("?statement_timeout=0")).toBe("0");
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expect(await effectiveStatementTimeout("?statement_timeout=900000")).toBe("15min");
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// `query_timeout` from the URL *does* override the explicit field, but it does not weaken the
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// bound — it breaks the client. `client.query` computes its read timer as
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// `queryConfig.query_timeout || connectionParameters.query_timeout`, and the parsed URL value
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// is the *string* `"0"`, which is truthy, so every query gets a 0 ms read timer and fails
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// nondeterministically ("Query read timeout") depending on which wins the race. The
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// deterministic, assertable fact is the parameter the URL installed.
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const racyClient = new Client({
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connectionString: `${database.url}?query_timeout=0`,
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...productionClientFields,
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}) as unknown as { readonly connectionParameters: { readonly query_timeout: unknown } };
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(racyClient as unknown as Client).on("error", () => undefined);
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expect(racyClient.connectionParameters.query_timeout).toBe("0");
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// `options` does *not* override the named startup parameter — including a backslash-escaped
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// spelling — so rejecting it is unsupported-configuration hygiene, not a precedence fix.
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expect(
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await effectiveStatementTimeout(`?options=${encodeURIComponent("-c statement_timeout=0")}`),
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).toBe("10s");
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expect(
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await effectiveStatementTimeout(
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`?options=${encodeURIComponent("-c statement_timeout=900s")}`,
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),
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).toBe("10s");
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expect(
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await effectiveStatementTimeout(
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`?options=${encodeURIComponent("-c statement_timeout\\=0")}`,
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),
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).toBe("10s");
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// Inherited environment cannot reach the selected policy either.
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expect(await effectiveStatementTimeout("", { PGOPTIONS: "-c statement_timeout=0" })).toBe(
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"10s",
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);
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expect(await effectiveStatementTimeout("", { PGCONNECT_TIMEOUT: "0" })).toBe("10s");
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// An unrelated parameter changes nothing.
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expect(await effectiveStatementTimeout("?application_name=ekklesia")).toBe("10s");
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});
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});
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it("refuses every rejected key at the shared boundary before a client is constructed", async () => {
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await withIsolatedDatabase("timeout_boundary", async (database) => {
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for (const query of [
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"?connectionTimeoutMillis=0",
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"?connectionTimeoutMillis=900000",
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"?connect_timeout=0",
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"?query_timeout=0",
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"?statement_timeout=0",
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`?options=${encodeURIComponent("-c statement_timeout=0")}`,
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]) {
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let captured: unknown;
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try {
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createPostgresMigrationDatabase(`${database.url}${query}`);
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} catch (error) {
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captured = error;
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}
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expect(captured, `expected ${query} rejected`).toBeInstanceOf(
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PostgresMigrationDatabaseError,
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);
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expect(captured).toMatchObject({ code: "POSTGRES_MIGRATION_CONFIGURATION_INVALID" });
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const publicText = `${String(captured)}\n${(captured as Error).stack ?? ""}`;
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expect(publicText).not.toContain(database.name);
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expect(publicText).not.toContain("127.0.0.1");
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}
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// The clean URL the commands actually use still works, end to end, with the real defaults.
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const applied = await applyModuleMigrations({
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aggregate: aggregate({
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id: "people",
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migrations: [migration("people", 0, { sql: "SELECT 1;", tag: "0000_ok" })],
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}),
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database: createPostgresMigrationDatabase(database.url),
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});
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expect(applied.appliedCount).toBe(1);
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});
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});
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});
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+26
-9
@@ -144,15 +144,32 @@ lock-wait deadline and error codes, and the Pass 2 TLS/hostname/certificate poli
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as are Doctor's and the bootstrap CLI's own timeouts. No timeout environment variable or flag was
|
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added.
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|
||||
Explicit constructor fields do **not** win under the pinned driver. `[email protected]` builds parameters as
|
||||
`Object.assign({}, config, parse(config.connectionString))`, so the connection string overrides
|
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passed options — verified directly: an explicit `statement_timeout: 10000` alongside
|
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`?statement_timeout=0` produced a server-reported `statement_timeout` of `0`, while a clean URL
|
||||
produced `10s`. A `DATABASE_URL` carrying `connect_timeout`, `query_timeout`, `statement_timeout`,
|
||||
or an `options` value that sets `statement_timeout` is therefore refused with the existing fixed
|
||||
`POSTGRES_MIGRATION_CONFIGURATION_INVALID`, before any client is constructed and without echoing the
|
||||
URL, parameter, or value. The rejection is deliberately narrow — only settings that actually conflict
|
||||
with the selected policy; unrelated parameters are untouched.
|
||||
A connection string can reach those values, because `[email protected]` builds parameters as
|
||||
`Object.assign({}, config, parse(config.connectionString))` and `pg-connection-string` retains
|
||||
*arbitrary* query keys. What each key actually does was measured against the installed driver, a
|
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real blackhole listener, and a real PostgreSQL rather than inferred from that merge, and only one of
|
||||
them genuinely weakens the policy:
|
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|
||||
| Source | Measured effect on the selected policy |
|
||||
| --- | --- |
|
||||
| `?statement_timeout=0` / `=900000` | **Wins.** Server reported `0` (disabled) and `15min` against an explicit `statement_timeout: 10000`. The one real downgrade. |
|
||||
| `?query_timeout=0` | Overrides the explicit field, but breaks the client rather than loosening it: the parsed value is the string `"0"`, which is truthy, so every query gets a 0 ms read timer and fails nondeterministically with `Query read timeout`. |
|
||||
| `?connectionTimeoutMillis=0` / `=900000` | Pollutes `ConnectionParameters.connect_timeout` (10 → `0`/`900` s), but that field feeds only `getLibpqConnectionString()`, which the pure-JS client never calls. The **effective** connect timer is unchanged — an explicit 500 ms still expired at ~500 ms with either value. |
|
||||
| `?connect_timeout=0` | No effect: `ConnectionParameters` recomputes it from `connectionTimeoutMillis`. |
|
||||
| `?options=-c statement_timeout=…` (incl. a backslash-escaped spelling) | No effect: the named startup parameter wins. Server still reported `10s`. |
|
||||
| inherited `PGOPTIONS=-c statement_timeout=0` | No effect. Server still reported `10s`. |
|
||||
| inherited `PGCONNECT_TIMEOUT=0` | No effect: consulted only when `connectionTimeoutMillis` is `undefined`, which this boundary never leaves unset. |
|
||||
| unrelated parameters (`application_name`, …) | No effect; deliberately untouched. |
|
||||
|
||||
A `DATABASE_URL` carrying `statement_timeout`, `query_timeout`, `connectionTimeoutMillis`,
|
||||
`connect_timeout`, or an `options` value naming `statement_timeout` is refused with the existing
|
||||
fixed `POSTGRES_MIGRATION_CONFIGURATION_INVALID`, before any client is constructed and without
|
||||
echoing the URL, parameter, or value. Only the first is a precedence fix; the rest are rejected as
|
||||
**unsupported configuration and defense in depth** — no legitimate `DATABASE_URL` carries a driver
|
||||
option, `connectionTimeoutMillis` would take effect on the native binding, and `query_timeout`
|
||||
produces intermittent failures an operator would struggle to diagnose. Stating that honestly matters:
|
||||
an earlier revision of this ADR claimed `connect_timeout` overrode the explicit field, which
|
||||
measurement disproved.
|
||||
|
||||
### Each migration is one PostgreSQL-parsed batch
|
||||
|
||||
|
||||
@@ -85,11 +85,14 @@ pnpm doctor # includes Core's migration in its discovery/plan chec
|
||||
Both `migrations:plan` and `migrations:apply` connect with fixed, finite defaults — a 10-second
|
||||
connection deadline, a 10-second client query timeout, and a 10-second PostgreSQL
|
||||
`statement_timeout` — applied at the one shared construction boundary so no command can omit them.
|
||||
A `DATABASE_URL` that tries to set `connect_timeout`, `query_timeout`, `statement_timeout`, or an
|
||||
`options` value carrying `statement_timeout` is refused with a sanitized configuration error,
|
||||
because the pinned driver lets the connection string override explicitly passed options. This bounds
|
||||
each individual operation; it does **not** promise that a migration completes within ten seconds
|
||||
across retries or cleanup. Migrations remain explicit operator work and never run at application
|
||||
A `DATABASE_URL` that tries to set `statement_timeout`, `query_timeout`, `connectionTimeoutMillis`,
|
||||
`connect_timeout`, or an `options` value naming `statement_timeout` is refused with a sanitized
|
||||
configuration error. Only `statement_timeout` actually overrides the selected policy under the
|
||||
pinned driver (measured: `?statement_timeout=0` made the server report `0`); the others are rejected
|
||||
as unsupported configuration and defense in depth — `query_timeout` breaks the client rather than
|
||||
loosening it, and `connectionTimeoutMillis` pollutes a driver field the pure-JS client never
|
||||
consults. Unrelated parameters are untouched. This bounds each individual operation; it does **not**
|
||||
promise that a migration completes within ten seconds across retries or cleanup. Migrations remain explicit operator work and never run at application
|
||||
startup.
|
||||
|
||||
Each pending migration's SQL is sent to PostgreSQL as **one complete batch**, inside the existing
|
||||
|
||||
Reference in New Issue
Block a user