perf(web): batch dashboard tile hydration
This commit is contained in:
vince
parent
63b008095f
commit
de87464ef1
7 changed files with 518 additions and 40 deletions
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@ -52,6 +52,11 @@ type DashboardTileResponse =
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message: string;
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};
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type DashboardTilesBatchResponse = {
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state: "ready";
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tiles: DashboardTileResponse[];
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};
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type DashboardTileHydrationResult = "aborted" | "failed" | "ready";
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const dashboardTileHydrationConcurrency = 6;
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@ -292,6 +297,7 @@ export default function App() {
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const modelIds = tiles.map(dashboardTileModelId);
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void runViewportAwareDashboardHydrationQueue({
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batchSize: dashboardTileHydrationConcurrency,
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collectVisibleModelIds: async () => {
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await waitForDashboardRenderFrame(signal);
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return collectVisibleDashboardModelIds({
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@ -321,6 +327,23 @@ export default function App() {
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tileBackoff.recordFailure(key);
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}
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},
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hydrateBatch: async (batch) => {
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const results = await hydrateDashboardTileBatch(
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batch,
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run,
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signal,
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snapshotContext,
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);
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for (const { result, tile } of results) {
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const key = dashboardTileKey(tile);
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if (result === "ready") {
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tileBackoff.recordSuccess(key);
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} else if (result === "failed") {
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tileBackoff.recordFailure(key);
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}
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}
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},
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items: tiles,
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onAllItemsSettled: () => performanceMarks.markAllTilesSettled(),
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onVisibleItemsSettled: () => performanceMarks.markVisibleTilesReady(),
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@ -335,6 +358,69 @@ export default function App() {
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});
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}
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async function hydrateDashboardTileBatch(
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tiles: DashboardTileReference[],
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run: number,
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signal: AbortSignal,
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snapshotContext: DashboardTileSnapshotStoreContext,
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): Promise<Array<{ result: DashboardTileHydrationResult; tile: DashboardTileReference }>> {
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try {
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const response = await fetch("/api/dashboard/tiles", {
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body: JSON.stringify({ tiles }),
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headers: { "Content-Type": "application/json" },
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method: "POST",
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signal,
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});
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const batchResponse = (await response.json()) as DashboardTilesBatchResponse;
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if (
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cancelled ||
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signal.aborted ||
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run !== hydrationRun ||
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!response.ok ||
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batchResponse.state !== "ready"
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) {
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throw new Error("Dashboard tile batch hydration failed");
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}
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const responsesByKey = new Map(
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batchResponse.tiles.map((tileResponse) => [
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dashboardTileKey(tileResponse.tile),
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tileResponse,
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]),
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);
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return tiles.map((tile) => {
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const key = dashboardTileKey(tile);
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try {
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return {
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tile,
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result: applyDashboardTileHydrationResponse(
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tile,
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responsesByKey.get(key),
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run,
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signal,
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snapshotContext,
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),
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};
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} finally {
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finishDashboardTileHydration(key, run, signal);
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}
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});
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} catch (error) {
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if (signal.aborted || cancelled || run !== hydrationRun) {
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return tiles.map((tile) => ({ result: "aborted", tile }));
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}
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return Promise.all(
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tiles.map(async (tile) => ({
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tile,
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result: await hydrateDashboardTile(tile, run, signal, snapshotContext),
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})),
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);
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}
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}
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async function hydrateDashboardTile(
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tile: DashboardTileReference,
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run: number,
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@ -347,32 +433,23 @@ export default function App() {
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const response = await fetch(dashboardTileUrl(tile), { signal });
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const tileResponse = (await response.json()) as DashboardTileResponse;
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if (
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cancelled ||
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signal.aborted ||
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run !== hydrationRun ||
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!response.ok ||
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tileResponse.state !== "ready"
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) {
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if (!response.ok) {
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return "failed";
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}
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const result = applyDashboardTileHydrationResponse(
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tile,
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tileResponse,
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run,
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signal,
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snapshotContext,
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);
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if (result !== "ready") {
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return signal.aborted || cancelled || run !== hydrationRun
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? "aborted"
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: "failed";
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}
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const readyTileResponse = tileResponse;
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setDashboard((current) =>
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current?.state === "ready"
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? {
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...current,
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document: applyDashboardTile(current.document, readyTileResponse),
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}
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: current,
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);
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tileSnapshotStore.saveReadyTile({
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...snapshotContext,
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response: readyTileResponse,
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});
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performanceMarks.markFirstTileReady();
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return "ready";
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} catch (error) {
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if (!isAbortError(error) && !cancelled) {
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@ -381,13 +458,58 @@ export default function App() {
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}
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return "aborted";
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} finally {
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if (!cancelled && !signal.aborted && run === hydrationRun) {
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setHydratingItemIds((current) => {
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const next = new Set(current);
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next.delete(key);
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return next;
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});
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}
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finishDashboardTileHydration(key, run, signal);
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}
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}
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function applyDashboardTileHydrationResponse(
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tile: DashboardTileReference,
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tileResponse: DashboardTileResponse | undefined,
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run: number,
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signal: AbortSignal,
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snapshotContext: DashboardTileSnapshotStoreContext,
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): DashboardTileHydrationResult {
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if (
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cancelled ||
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signal.aborted ||
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run !== hydrationRun ||
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!tileResponse ||
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dashboardTileKey(tileResponse.tile) !== dashboardTileKey(tile) ||
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tileResponse.state !== "ready"
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) {
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return signal.aborted || cancelled || run !== hydrationRun
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? "aborted"
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: "failed";
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}
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const readyTileResponse = tileResponse;
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setDashboard((current) =>
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current?.state === "ready"
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? {
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...current,
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document: applyDashboardTile(current.document, readyTileResponse),
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}
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: current,
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);
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tileSnapshotStore.saveReadyTile({
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...snapshotContext,
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response: readyTileResponse,
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});
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performanceMarks.markFirstTileReady();
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return "ready";
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}
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function finishDashboardTileHydration(
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key: string,
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run: number,
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signal: AbortSignal,
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) {
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if (!cancelled && !signal.aborted && run === hydrationRun) {
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setHydratingItemIds((current) => {
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const next = new Set(current);
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next.delete(key);
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return next;
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});
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}
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}
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@ -9,6 +9,7 @@ import {
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createDashboardTileBackoff,
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createDashboardRequestAborter,
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runDashboardHydrationQueue,
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runDashboardHydrationBatchQueue,
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runViewportAwareDashboardHydrationQueue,
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shouldPauseDashboardRefresh,
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splitDashboardHydrationItemsByVisibility,
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@ -121,6 +122,25 @@ describe("dashboard refresh lifecycle", () => {
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expect(maxActive).toBe(2);
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});
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test("hydrates queued work in fixed-size batches", async () => {
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const batches: number[][] = [];
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await runDashboardHydrationBatchQueue({
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batchSize: 3,
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hydrateBatch: (items) => {
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batches.push(items);
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},
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items: [1, 2, 3, 4, 5, 6, 7],
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signal: new AbortController().signal,
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});
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expect(batches).toEqual([
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[1, 2, 3],
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[4, 5, 6],
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[7],
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]);
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});
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test("hydrates visible items before deferred items and waits for idle", async () => {
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const calls: string[] = [];
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const idleReleases: Array<() => void> = [];
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@ -152,10 +152,12 @@ export async function runDashboardHydrationQueue<TItem>(
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}
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export interface DashboardViewportHydrationQueueOptions<TItem> {
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batchSize?: number;
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collectVisibleModelIds: () => Promise<ReadonlySet<string>>;
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concurrency: number;
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getModelId: (item: TItem) => string;
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hydrate: (item: TItem) => Promise<void> | void;
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hydrateBatch?: (items: TItem[]) => Promise<void> | void;
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items: TItem[];
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onAllItemsSettled?: () => void;
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onVisibleItemsSettled?: () => void;
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@ -175,12 +177,7 @@ export async function runViewportAwareDashboardHydrationQueue<TItem>(
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visibleModelIds,
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});
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await runDashboardHydrationQueue({
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concurrency: options.concurrency,
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hydrate: options.hydrate,
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items: visible,
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signal: options.signal,
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});
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await runDashboardHydrationItems(options, visible);
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if (options.signal.aborted) return;
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options.onVisibleItemsSettled?.();
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@ -192,13 +189,44 @@ export async function runViewportAwareDashboardHydrationQueue<TItem>(
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await options.waitForIdle();
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if (options.signal.aborted) return;
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await runDashboardHydrationQueue({
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concurrency: options.concurrency,
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hydrate: options.hydrate,
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items: deferred,
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await runDashboardHydrationItems(options, deferred);
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options.onAllItemsSettled?.();
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}
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async function runDashboardHydrationItems<TItem>(
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options: DashboardViewportHydrationQueueOptions<TItem>,
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items: TItem[],
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): Promise<void> {
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if (!options.hydrateBatch) {
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await runDashboardHydrationQueue({
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concurrency: options.concurrency,
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hydrate: options.hydrate,
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items,
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signal: options.signal,
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});
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return;
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}
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await runDashboardHydrationBatchQueue({
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batchSize: options.batchSize ?? options.concurrency,
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hydrateBatch: options.hydrateBatch,
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items,
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signal: options.signal,
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});
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options.onAllItemsSettled?.();
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}
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export async function runDashboardHydrationBatchQueue<TItem>(options: {
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batchSize: number;
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hydrateBatch: (items: TItem[]) => Promise<void> | void;
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items: TItem[];
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signal: AbortSignal;
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}): Promise<void> {
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const batchSize = Math.max(1, Math.floor(options.batchSize));
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for (let index = 0; index < options.items.length; index += batchSize) {
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if (options.signal.aborted) return;
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await options.hydrateBatch(options.items.slice(index, index + batchSize));
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}
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}
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export function splitDashboardHydrationItemsByVisibility<TItem>(options: {
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53
apps/web/src/server/index.test.ts
Normal file
53
apps/web/src/server/index.test.ts
Normal file
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@ -0,0 +1,53 @@
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import { afterAll, describe, expect, test, vi } from "vitest";
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import { handleRequest } from "./index";
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describe("server request routing", () => {
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const consoleInfo = vi.spyOn(console, "info").mockImplementation(() => undefined);
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afterAll(() => {
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consoleInfo.mockRestore();
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});
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test("routes dashboard tile batch requests", async () => {
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const response = await handleRequest(
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new Request("https://example.test/api/dashboard/tiles", {
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method: "POST",
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body: JSON.stringify({
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tiles: [
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{
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kind: "status",
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stripId: "footer-status",
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id: "auto-refresh",
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},
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],
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}),
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}),
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);
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expect(response.status).toBe(200);
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await expect(response.json()).resolves.toMatchObject({
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state: "ready",
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tiles: [
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{
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state: "ready",
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tile: {
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kind: "status",
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stripId: "footer-status",
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id: "auto-refresh",
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},
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},
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],
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});
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});
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test("rejects non-post dashboard tile batch requests", async () => {
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const response = await handleRequest(
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new Request("https://example.test/api/dashboard/tiles", {
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method: "GET",
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}),
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);
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expect(response.status).toBe(405);
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expect(response.headers.get("allow")).toBe("POST");
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});
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});
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@ -1,6 +1,10 @@
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import { extname, normalize } from "node:path";
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import { handleAgentDashboardRoute } from "./routes/agent-dashboard";
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import { handleDashboardRoute, handleDashboardTileRoute } from "./routes/dashboard";
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import {
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handleDashboardRoute,
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handleDashboardTileRoute,
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handleDashboardTilesRoute,
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} from "./routes/dashboard";
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const host = process.env.HOST || "0.0.0.0";
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const port = Number(process.env.PORT || 3000);
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@ -23,6 +27,11 @@ export async function handleRequest(request: Request): Promise<Response> {
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return handleDashboardRoute();
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}
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if (url.pathname === "/api/dashboard/tiles") {
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if (request.method !== "POST") return methodNotAllowed(["POST"]);
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return handleDashboardTilesRoute(request);
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}
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if (url.pathname.startsWith("/api/dashboard/tile/")) {
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if (request.method !== "GET") return methodNotAllowed(["GET"]);
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return handleDashboardTileRoute(url.pathname);
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@ -3,8 +3,10 @@ import { dimensionLabDashboardFixture } from "$lib/dashboard-seed/dimensionlab";
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import {
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createDashboardTileCache,
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dashboardTileCacheKey,
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handleDashboardTilesRoute,
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handleDashboardTileRoute,
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loadDashboardResponse,
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loadDashboardTilesResponse,
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loadDashboardTileResponse,
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type DashboardTileResolutionLogEvent,
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} from "./dashboard";
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@ -563,6 +565,115 @@ describe("dashboard API route", () => {
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);
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});
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test("serves batch tile route responses", async () => {
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const response = await handleDashboardTilesRoute(
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new Request("https://example.test/api/dashboard/tiles", {
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method: "POST",
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body: JSON.stringify({
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tiles: [
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{
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kind: "status",
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stripId: "footer-status",
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id: "auto-refresh",
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},
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],
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}),
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}),
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{
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refreshSeedDocument: true,
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seedIfEmpty: true,
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tileCache: createDashboardTileCache(),
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},
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);
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expect(response.status).toBe(200);
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expect(response.headers.get("cache-control")).toBe(
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"private, max-age=5, stale-while-revalidate=30",
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);
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await expect(response.json()).resolves.toMatchObject({
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state: "ready",
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tiles: [
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{
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state: "ready",
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tile: {
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kind: "status",
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stripId: "footer-status",
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id: "auto-refresh",
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},
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},
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],
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});
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});
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test("rejects invalid batch tile requests", async () => {
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const response = await handleDashboardTilesRoute(
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new Request("https://example.test/api/dashboard/tiles", {
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method: "POST",
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body: JSON.stringify({
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tiles: [{ kind: "service", id: "missing-group" }],
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}),
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}),
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);
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expect(response.status).toBe(400);
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});
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test("resolves batch tile responses with server concurrency capped at six", async () => {
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let active = 0;
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let maxActive = 0;
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const started: string[] = [];
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const releases = new Map<string, () => void>();
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const service = dimensionLabDashboardFixture.serviceGroups
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.flatMap((group) => group.services)[0];
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if (!service) throw new Error("missing service fixture");
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const tiles = Array.from({ length: 7 }, (_, index) => ({
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kind: "service" as const,
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groupId: "essentials",
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id: `service-${index}`,
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}));
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const batch = loadDashboardTilesResponse(tiles, {
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refreshSeedDocument: true,
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seedIfEmpty: true,
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tileCache: {
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async resolve(key) {
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active += 1;
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maxActive = Math.max(maxActive, active);
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started.push(key);
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await new Promise<void>((resolve) => releases.set(key, resolve));
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active -= 1;
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|
||||
return {
|
||||
cache: "miss",
|
||||
coalesced: false,
|
||||
response: {
|
||||
state: "ready",
|
||||
tile: JSON.parse(key),
|
||||
item: service,
|
||||
},
|
||||
};
|
||||
},
|
||||
},
|
||||
});
|
||||
|
||||
await waitFor(() => started.length === 6);
|
||||
expect(maxActive).toBe(6);
|
||||
releases.get(started[0])?.();
|
||||
await waitFor(() => started.length === 7);
|
||||
for (const release of releases.values()) release();
|
||||
|
||||
await expect(batch).resolves.toMatchObject({
|
||||
state: "ready",
|
||||
tiles: expect.arrayContaining([
|
||||
expect.objectContaining({
|
||||
state: "ready",
|
||||
tile: tiles[0],
|
||||
}),
|
||||
]),
|
||||
});
|
||||
expect(maxActive).toBe(6);
|
||||
});
|
||||
|
||||
test("does not hydrate tile routes when live datasources are disabled", async () => {
|
||||
const previous = process.env.DISABLE_LIVE_DATASOURCES;
|
||||
process.env.DISABLE_LIVE_DATASOURCES = "1";
|
||||
|
|
@ -598,6 +709,15 @@ function jsonResponse(payload: unknown): Response {
|
|||
});
|
||||
}
|
||||
|
||||
async function waitFor(predicate: () => boolean) {
|
||||
for (let attempt = 0; attempt < 20; attempt += 1) {
|
||||
if (predicate()) return;
|
||||
await Promise.resolve();
|
||||
}
|
||||
|
||||
throw new Error("condition was not met");
|
||||
}
|
||||
|
||||
function telemetryFetch() {
|
||||
return vi.fn(async (input: RequestInfo | URL) => {
|
||||
const url = String(input);
|
||||
|
|
|
|||
|
|
@ -43,6 +43,8 @@ const dashboardTileResponseHeaders = {
|
|||
"Cache-Control": "private, max-age=5, stale-while-revalidate=30",
|
||||
};
|
||||
|
||||
const dashboardBatchTileConcurrency = 6;
|
||||
|
||||
const defaultDashboardTileCache = createDashboardTileCache();
|
||||
|
||||
interface DashboardTileCacheResult {
|
||||
|
|
@ -60,6 +62,11 @@ export interface DashboardTileResolutionLogEvent {
|
|||
tileKey: string;
|
||||
}
|
||||
|
||||
export interface DashboardTilesBatchResponse {
|
||||
state: "ready";
|
||||
tiles: DashboardTileResolution[];
|
||||
}
|
||||
|
||||
export function createDashboardTileCache(): DashboardTileCache {
|
||||
const entries = new Map<string, DashboardTileCacheEntry>();
|
||||
const inFlight = new Map<string, Promise<DashboardTileResolution>>();
|
||||
|
|
@ -236,6 +243,16 @@ export async function loadDashboardTileResponse(
|
|||
}
|
||||
}
|
||||
|
||||
export async function loadDashboardTilesResponse(
|
||||
tiles: DashboardTileReference[],
|
||||
options: LoadDashboardResponseOptions = {},
|
||||
): Promise<DashboardTilesBatchResponse> {
|
||||
return {
|
||||
state: "ready",
|
||||
tiles: await resolveDashboardTilesBatch(tiles, options),
|
||||
};
|
||||
}
|
||||
|
||||
export async function handleDashboardRoute(): Promise<Response> {
|
||||
return Response.json(await loadDashboardResponse());
|
||||
}
|
||||
|
|
@ -259,6 +276,23 @@ export async function handleDashboardTileRoute(
|
|||
});
|
||||
}
|
||||
|
||||
export async function handleDashboardTilesRoute(
|
||||
request: Request,
|
||||
options: LoadDashboardResponseOptions = {},
|
||||
): Promise<Response> {
|
||||
const tiles = await parseDashboardTilesBatchRequest(request);
|
||||
if (!tiles) {
|
||||
return Response.json(
|
||||
{ ok: false, message: "Invalid dashboard tiles request" },
|
||||
{ status: 400 },
|
||||
);
|
||||
}
|
||||
|
||||
return Response.json(await loadDashboardTilesResponse(tiles, options), {
|
||||
headers: dashboardTileResponseHeaders,
|
||||
});
|
||||
}
|
||||
|
||||
export function dashboardTileCacheKey(tile: DashboardTileReference): string {
|
||||
return JSON.stringify(tile);
|
||||
}
|
||||
|
|
@ -296,6 +330,98 @@ function dashboardTileErrorCategory(error: unknown): string {
|
|||
return "unknown";
|
||||
}
|
||||
|
||||
async function resolveDashboardTilesBatch(
|
||||
tiles: DashboardTileReference[],
|
||||
options: LoadDashboardResponseOptions,
|
||||
): Promise<DashboardTileResolution[]> {
|
||||
const results: DashboardTileResolution[] = new Array(tiles.length);
|
||||
let nextIndex = 0;
|
||||
|
||||
async function worker() {
|
||||
while (nextIndex < tiles.length) {
|
||||
const index = nextIndex;
|
||||
nextIndex += 1;
|
||||
results[index] = await loadDashboardTileResponse(tiles[index], options);
|
||||
}
|
||||
}
|
||||
|
||||
await Promise.all(
|
||||
Array.from(
|
||||
{ length: Math.min(dashboardBatchTileConcurrency, tiles.length) },
|
||||
() => worker(),
|
||||
),
|
||||
);
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
async function parseDashboardTilesBatchRequest(
|
||||
request: Request,
|
||||
): Promise<DashboardTileReference[] | null> {
|
||||
try {
|
||||
const body = await request.json() as unknown;
|
||||
if (
|
||||
typeof body !== "object" ||
|
||||
body === null ||
|
||||
!("tiles" in body) ||
|
||||
!Array.isArray(body.tiles)
|
||||
) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const tiles = body.tiles.map(parseDashboardTileReference);
|
||||
return tiles.every((tile): tile is DashboardTileReference => tile !== null)
|
||||
? tiles
|
||||
: null;
|
||||
} catch {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
function parseDashboardTileReference(value: unknown): DashboardTileReference | null {
|
||||
if (typeof value !== "object" || value === null || !("kind" in value)) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (
|
||||
(value.kind === "telemetry" || value.kind === "module") &&
|
||||
"id" in value &&
|
||||
typeof value.id === "string"
|
||||
) {
|
||||
return { kind: value.kind, id: value.id };
|
||||
}
|
||||
|
||||
if (
|
||||
value.kind === "service" &&
|
||||
"groupId" in value &&
|
||||
typeof value.groupId === "string" &&
|
||||
"id" in value &&
|
||||
typeof value.id === "string"
|
||||
) {
|
||||
return {
|
||||
kind: "service",
|
||||
groupId: value.groupId,
|
||||
id: value.id,
|
||||
};
|
||||
}
|
||||
|
||||
if (
|
||||
value.kind === "status" &&
|
||||
"stripId" in value &&
|
||||
typeof value.stripId === "string" &&
|
||||
"id" in value &&
|
||||
typeof value.id === "string"
|
||||
) {
|
||||
return {
|
||||
kind: "status",
|
||||
stripId: value.stripId,
|
||||
id: value.id,
|
||||
};
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
class DashboardTileCacheResolutionError extends Error {
|
||||
readonly cache: "hit" | "miss";
|
||||
readonly coalesced: boolean;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue