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<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8" />
<title>🐰 UsagiDB Demo</title>
<style>
:root {
color-scheme: light dark;
}
body {
font-family: system-ui, sans-serif;
padding: 20px;
max-width: 1200px;
margin: 0 auto;
}
h1 {
margin-bottom: 4px;
}
h2 {
font-size: 16px;
margin-bottom: 6px;
}
.tag {
opacity: 0.6;
font-size: 13px;
margin-top: 0;
}
.panels {
display: grid;
grid-template-columns: 1fr 1fr 1fr;
gap: 14px;
margin-top: 16px;
}
.panel {
border: 1px solid #ccc4;
border-radius: 8px;
padding: 12px;
background: #f7f7f900;
}
button {
margin: 2px 3px 2px 0;
padding: 5px 9px;
cursor: pointer;
font-size: 12px;
}
pre {
background: #11151c;
color: #d6d8de;
padding: 10px;
border-radius: 5px;
white-space: pre-wrap;
font-family: ui-monospace, monospace;
font-size: 11px;
min-height: 240px;
margin-top: 8px;
line-height: 1.45;
max-height: 320px;
overflow: auto;
}
.pill {
display: inline-block;
padding: 1px 6px;
background: #3b82f6;
color: white;
border-radius: 8px;
font-size: 10px;
margin-left: 4px;
}
.pill.off {
background: #6b7280;
}
input[type="text"] {
width: 100px;
padding: 4px 6px;
font-size: 12px;
}
</style>
</head>
<body>
<h1>🐰 UsagiDB</h1>
<p class="tag">
Multi-modal: <strong>ts</strong>=HTAP TS-DB,
<strong>stream</strong>=jellyfish_moon, <strong>log</strong>=Kafka-like.
| <a href="./web/">🌊 realtime canvas chart →</a>
</p>
<div class="panels">
<div class="panel">
<h2>📦 ts mode</h2>
<button onclick="ts_create()">Create</button>
<button onclick="ts_insert()">Insert</button>
<button onclick="ts_scan()">Scan</button>
<button onclick="ts_stats()">Stats</button>
<button onclick="ts_serialize()">Serialize</button>
<button onclick="clear_ts()">Clear</button>
<pre id="ts_out"></pre>
</div>
<div class="panel">
<h2>🌊 stream mode</h2>
<button onclick="stream_setup()">Downsample 1s OHLC</button>
<button onclick="stream_setup_keep_last(10)">KeepLastN(10)</button>
<button onclick="stream_setup_dead_band(0.5)">DeadBand(0.5)</button>
<button onclick="stream_push_random()">Push 30</button>
<button onclick="stream_show()">Query</button>
<button onclick="clear_stream()">Clear</button>
<pre id="stream_out"></pre>
</div>
<div class="panel" style="grid-column: 1 / span 3;">
<h2>🔄 sync transport (ts mode)
<span id="ws_pill" class="pill off">ws: off</span>
<span id="bgsync_pill" class="pill off">bg-sync: off</span>
<span id="p2p_pill" class="pill off">p2p: off</span>
</h2>
<input type="text" id="ws_url" value="ws://localhost:9000/sync" style="width:240px"/>
<button onclick="ws_connect()">Connect</button>
<button onclick="ws_disconnect()">Disconnect</button>
<button onclick="ws_pull()">Pull</button>
<button onclick="ws_push()">Push</button>
<button onclick="ws_push_range()">Push (last 10s shape)</button>
<button onclick="enable_bg_sync()">⏰ Background Sync</button>
<button onclick="toggle_p2p()">⇆ P2P (intra-tab)</button>
<button onclick="clear_sync()">Clear</button>
<pre id="sync_out" style="min-height:120px"></pre>
</div>
<div class="panel">
<h2>📜 log mode <span id="bcast_pill" class="pill off">bcast: off</span><span id="opfs_pill" class="pill off">opfs: off</span></h2>
<button onclick="log_setup()">Subscribe</button>
<button onclick="log_produce_one()">Produce</button>
<button onclick="log_poll_some()">Poll(5)</button>
<button onclick="log_topics()">Topics</button>
<br/>
<button onclick="toggle_bcast()">⇆ BroadcastChannel</button>
<button onclick="toggle_opfs()">💾 OPFS auto-save</button>
<button onclick="opfs_load()">📂 Load OPFS</button>
<button onclick="clear_log()">Clear</button>
<pre id="log_out"></pre>
</div>
</div>
<script type="module">
import {
create,
to_int64,
value_float,
value_string,
insert,
scan,
stats,
serialize,
deserialize,
stream_keep_last_n,
stream_downsample_ohlc,
stream_dead_band,
stream_put,
stream_query,
stream_serialize,
stream_restore,
log_enable,
log_produce_string,
log_subscribe,
log_poll,
log_list_topics,
log_serialize,
log_deserialize,
sync_pull,
sync_apply,
sync_local_seq,
sync_pull_range,
} from "./target/js/release/build/cmd/main/main.js";
const ts_out = document.getElementById("ts_out");
const stream_out = document.getElementById("stream_out");
const log_out = document.getElementById("log_out");
const sync_out = document.getElementById("sync_out");
let db = null;
const log_ts = (m) => (ts_out.textContent += m + "\n");
const log_stream = (m) => (stream_out.textContent += m + "\n");
const log_log = (m) => (log_out.textContent += m + "\n");
const log_sync = (m) => (sync_out.textContent += m + "\n");
window.clear_ts = () => (ts_out.textContent = "");
window.clear_stream = () => (stream_out.textContent = "");
window.clear_log = () => (log_out.textContent = "");
window.clear_sync = () => (sync_out.textContent = "");
function ensure_db() {
if (!db) {
db = create(50);
}
}
// ts panel ---------------------------------------------------------------
window.ts_create = () => {
ensure_db();
log_ts("✅ db = create(50) // ts mode enabled");
};
window.ts_insert = () => {
ensure_db();
const now = Date.now();
const ts = to_int64(now % 2147483647);
const temp = 20 + Math.random() * 10;
const sensor = Math.random() > 0.5 ? "sensor-1" : "sensor-2";
insert(db, ts, [value_float(temp), value_string(sensor)]);
log_ts(`📝 ts insert temp=${temp.toFixed(2)} sensor=${sensor}`);
};
window.ts_scan = () => {
ensure_db();
const rows = scan(db, to_int64(0), to_int64(2147483647));
log_ts(`📊 ${rows.length} rows`);
for (let i = 0; i < Math.min(rows.length, 10); i++) {
const r = rows[i];
let s = "";
for (const v of r.values) {
if (v.$tag === 2) s += v._0.toFixed(2) + "°C, ";
else if (v.$tag === 3) s += v._0 + ", ";
}
log_ts(` [${i}] ts=${r.ts.lo >>> 0} ${s.slice(0, -2)}`);
}
};
window.ts_stats = () => {
ensure_db();
log_ts("📈 " + stats(db));
};
window.ts_serialize = () => {
ensure_db();
const json = serialize(db);
log_ts(`💾 ${json.length} bytes`);
log_ts(` ${json.slice(0, 80)}...`);
};
// stream panel -----------------------------------------------------------
window.stream_setup = () => {
ensure_db();
stream_downsample_ohlc(db, "price", to_int64(1000));
log_stream("✅ price → Downsample(1s, OHLC)");
};
window.stream_setup_keep_last = (n) => {
ensure_db();
stream_keep_last_n(db, "price", n);
log_stream(`✅ price → KeepLastN(${n})`);
};
window.stream_setup_dead_band = (th) => {
ensure_db();
stream_dead_band(db, "price", th);
log_stream(`✅ price → DeadBand(${th})`);
};
let sim_t = 0;
let sim_v = 100;
window.stream_push_random = () => {
ensure_db();
for (let i = 0; i < 30; i++) {
sim_v += (Math.random() - 0.5) * 2;
sim_t += 100;
stream_put(db, "price", sim_v, to_int64(sim_t));
}
log_stream(`📝 pushed 30 samples (t now = ${sim_t})`);
};
window.stream_show = () => {
ensure_db();
const rows = stream_query(db, "price");
log_stream(`📊 ${rows.length} stream rows`);
for (let i = 0; i < Math.min(rows.length, 12); i++) {
const r = rows[i];
if (r.$tag === 0) {
log_stream(` [${i}] Point t=${r._0.lo} v=${r._1.toFixed(2)}`);
} else {
const b = r._0;
log_stream(
` [${i}] Candle start=${b.start.lo} O=${b.open.toFixed(2)} H=${b.high.toFixed(2)} L=${b.low.toFixed(2)} C=${b.close.toFixed(2)} n=${b.count}`,
);
}
}
};
// log panel --------------------------------------------------------------
const TOPIC = "events";
const GROUP = "panel";
window.log_setup = () => {
ensure_db();
log_enable(db);
log_subscribe(db, TOPIC, GROUP);
log_log(`✅ subscribed group="${GROUP}" → topic="${TOPIC}"`);
};
window.log_produce_one = () => {
ensure_db();
log_enable(db);
const now = Date.now();
const id = "id_" + (now % 100000);
const message = "hello @ " + new Date().toLocaleTimeString();
const offset = log_produce_string(db, TOPIC, id, message, to_int64(now % 2147483647));
log_log(`📝 produce key="${id}" → offset=${offset.lo}`);
if (bcast_on && bc) bc.postMessage({ kind: "produce", id, message, ts: now });
if (opfs_auto) schedule_opfs_save();
};
window.log_poll_some = () => {
ensure_db();
log_enable(db);
const records = log_poll(db, TOPIC, GROUP, 5);
log_log(`📊 polled ${records.length} record(s)`);
for (const r of records) {
const k = r.key === null ? "(no key)" : r.key._0; // Option<String> → {_0}
let v_str = "?";
const v = r.value;
if (v.$tag === 3) v_str = `"${v._0}"`;
else if (v.$tag === 1) v_str = String(v._0.lo);
else if (v.$tag === 2) v_str = v._0.toFixed(2);
log_log(` offset=${r.offset.lo} key=${k} v=${v_str}`);
}
};
window.log_topics = () => {
ensure_db();
const topics = log_list_topics(db);
log_log(`📦 topics: [${topics.join(", ")}]`);
};
// BroadcastChannel cross-tab sync ---------------------------------------
let bc = null;
let bcast_on = false;
window.toggle_bcast = () => {
bcast_on = !bcast_on;
const pill = document.getElementById("bcast_pill");
if (bcast_on) {
bc = new BroadcastChannel("usagidb-log");
bc.onmessage = (e) => {
if (e.data.kind === "produce") {
ensure_db();
log_enable(db);
log_produce_string(db, TOPIC, e.data.id, e.data.message, to_int64(e.data.ts % 2147483647));
log_log(`⇆ remote produce: id=${e.data.id} → mirrored locally`);
}
};
pill.textContent = "bcast: on";
pill.classList.remove("off");
log_log("✅ BroadcastChannel('usagidb-log') opened — open another tab to sync");
} else {
if (bc) bc.close();
bc = null;
pill.textContent = "bcast: off";
pill.classList.add("off");
log_log("⏸ BroadcastChannel closed");
}
};
// OPFS auto-save (switchable) — covers ts + stream + log in one file.
const OPFS_FILE = "usagidb-all.json";
let opfs_auto = false;
let opfs_save_pending = false;
async function opfs_write(name, content) {
const root = await navigator.storage.getDirectory();
const handle = await root.getFileHandle(name, { create: true });
const writable = await handle.createWritable();
await writable.write(content);
await writable.close();
}
async function opfs_read(name) {
const root = await navigator.storage.getDirectory();
const handle = await root.getFileHandle(name);
const file = await handle.getFile();
return await file.text();
}
function snapshot_all() {
// Each mode is optional; omit when disabled.
const blob = {
ts: db && db.ts.$tag !== undefined ? null : (db && db.ts ? serialize(db) : null),
stream: db && db.stream ? stream_serialize(db) : null,
log: db && db.log ? log_serialize(db) : null,
};
// MoonBit Option in JS: `Some(x)` is `{$tag:0,_0:x}`, `None` is `null`.
// Our umbrella exposes ts/stream/log as plain `?` — JS sees the value
// (or `null` for None). The check above tries both shapes.
return JSON.stringify(blob);
}
function schedule_opfs_save() {
if (opfs_save_pending) return;
opfs_save_pending = true;
requestAnimationFrame(async () => {
opfs_save_pending = false;
try {
const text = snapshot_all();
await opfs_write(OPFS_FILE, text);
} catch (err) {
log_log("⚠️ opfs save failed: " + err.message);
}
});
}
window.toggle_opfs = () => {
opfs_auto = !opfs_auto;
const pill = document.getElementById("opfs_pill");
if (opfs_auto) {
pill.textContent = "opfs: on";
pill.classList.remove("off");
log_log("✅ OPFS auto-save on (ts+stream+log) → " + OPFS_FILE);
if (db) schedule_opfs_save();
} else {
pill.textContent = "opfs: off";
pill.classList.add("off");
log_log("⏸ OPFS auto-save off");
}
};
window.opfs_load = async () => {
try {
const text = await opfs_read(OPFS_FILE);
const blob = JSON.parse(text);
// Restore ts (rebuilds the db from scratch; ts becomes the source).
if (blob.ts) {
const restored_ts = deserialize(blob.ts);
if (restored_ts) {
db = restored_ts;
log_log("📂 ts restored");
}
} else {
ensure_db();
}
// Restore log
if (blob.log) {
log_enable(db);
if (log_deserialize(db, blob.log)) {
log_log(`📂 log restored, topics: [${log_list_topics(db).join(", ")}]`);
}
}
// Restore stream (caller must have configured rules manually)
if (blob.stream) {
// Ensure stream mode exists with empty config.
if (!db.stream) {
// re-create db with stream enabled? For simplicity, panic if not enabled.
log_stream("⚠️ stream not enabled — set up rules first then load");
} else if (stream_restore(db, blob.stream)) {
log_stream("📂 stream state restored");
}
}
} catch (err) {
log_log("⚠️ opfs load failed: " + err.message);
}
};
log_ts("🐰 ts panel");
log_stream("🌊 stream panel");
log_log("📜 log panel — Subscribe → Produce → Poll. Try BroadcastChannel + OPFS!");
log_sync("🔄 sync — connect to a WebSocket relay to push/pull SyncPackets");
// sync transport ---------------------------------------------------------
let ws = null;
let last_pulled_seq = 0n; // BigInt to mirror Int64 wire shape
window.ws_connect = () => {
ensure_db();
const url = document.getElementById("ws_url").value;
try {
ws = new WebSocket(url);
} catch (err) {
log_sync("⚠️ connect failed: " + err.message);
return;
}
ws.onopen = () => {
document.getElementById("ws_pill").textContent = "ws: on";
document.getElementById("ws_pill").classList.remove("off");
log_sync("✅ connected to " + url);
};
ws.onmessage = (ev) => {
// Wire format: a JSON SyncPacket. Apply it locally.
try {
const result = sync_apply(db, ev.data);
// SyncResult is enum { Success(n), Conflict([ts]), Error(s) }
if (result.$tag === 0) {
log_sync(`📥 applied ${result._0} change(s)`);
} else if (result.$tag === 1) {
log_sync(`⚠️ ${result._0.length} conflict(s)`);
} else {
log_sync(`⚠️ error: ${result._0}`);
}
} catch (err) {
log_sync("⚠️ apply failed: " + err.message);
}
};
ws.onerror = (err) => log_sync("⚠️ ws error");
ws.onclose = () => {
document.getElementById("ws_pill").textContent = "ws: off";
document.getElementById("ws_pill").classList.add("off");
log_sync("⏸ disconnected");
};
};
window.ws_disconnect = () => {
if (ws) {
ws.close();
ws = null;
}
};
window.ws_pull = () => {
if (!ws || ws.readyState !== 1) return log_sync("⚠️ not connected");
// Send a small "pull" request — relay can interpret however.
const local = sync_local_seq(db);
ws.send(JSON.stringify({ kind: "pull", since: local }));
log_sync(`📤 pull request since seq=${local.lo || 0}`);
};
window.ws_push = () => {
if (!ws || ws.readyState !== 1) return enqueue_offline("push", sync_pull(db, to_int64(0)));
const json = sync_pull(db, to_int64(0));
ws.send(json);
log_sync(`📤 pushed packet (${json.length} bytes)`);
};
window.ws_push_range = () => {
ensure_db();
// Demo shape: last 10 seconds of data only.
const now = Date.now() % 2147483647;
const ts_min = to_int64(Math.max(0, now - 10000));
const ts_max = to_int64(now);
const json = sync_pull_range(db, to_int64(0), ts_min, ts_max);
if (!ws || ws.readyState !== 1) return enqueue_offline("push", json);
ws.send(json);
log_sync(`📤 pushed shape packet (${json.length} bytes, last 10s)`);
};
// Background Sync ───────────────────────────────────────────────────────
const OUTBOX_KEY = "usagidb_outbox";
const get_outbox = () => JSON.parse(localStorage.getItem(OUTBOX_KEY) || "[]");
const set_outbox = (arr) => localStorage.setItem(OUTBOX_KEY, JSON.stringify(arr));
function enqueue_offline(kind, body) {
const outbox = get_outbox();
outbox.push({
url: document.getElementById("ws_url").value.replace(/^ws/, "http"),
body,
});
set_outbox(outbox);
log_sync(`💾 offline: queued (${outbox.length} pending)`);
// Try to wake the SW so it can drain when online.
if (navigator.serviceWorker && navigator.serviceWorker.controller) {
navigator.serviceWorker.controller.postMessage({ kind: "drain" });
}
}
// ts P2P sync via BroadcastChannel ─────────────────────────────────────
// Intra-tab/cross-tab same-origin only. Plug in a WebRTC RTCDataChannel
// (with an external signaling server) to extend across origins.
let p2p_bc = null;
let p2p_on = false;
window.toggle_p2p = () => {
const pill = document.getElementById("p2p_pill");
p2p_on = !p2p_on;
if (p2p_on) {
ensure_db();
p2p_bc = new BroadcastChannel("usagidb-ts-p2p");
p2p_bc.onmessage = (e) => {
if (e.data.kind === "sync-packet") {
const r = sync_apply(db, e.data.json);
if (r.$tag === 0) {
log_sync(`⇆ peer applied ${r._0} change(s)`);
}
}
};
// Auto-broadcast on every successful local push.
const orig_push = window.ws_push;
window.ws_push = () => {
const json = sync_pull(db, to_int64(0));
if (ws && ws.readyState === 1) ws.send(json);
if (p2p_bc) p2p_bc.postMessage({ kind: "sync-packet", json });
log_sync(`📤 push (ws=${ws ? "on" : "off"}, p2p=on)`);
};
pill.textContent = "p2p: on";
pill.classList.remove("off");
log_sync("✅ P2P intra-tab on. Open another tab + toggle to sync ts via BroadcastChannel.");
} else {
if (p2p_bc) p2p_bc.close();
p2p_bc = null;
pill.textContent = "p2p: off";
pill.classList.add("off");
log_sync("⏸ P2P off");
}
};
window.enable_bg_sync = async () => {
try {
const reg = await navigator.serviceWorker.register("./sw.js");
await navigator.serviceWorker.ready;
// SW asks the page for the outbox on each drain attempt.
navigator.serviceWorker.addEventListener("message", (e) => {
if (e.data.kind === "request-outbox" && e.ports.length) {
const outbox = get_outbox();
e.ports[0].postMessage({ outbox });
set_outbox([]);
} else if (e.data.kind === "outbox-drained") {
log_sync(`📤 background drain: sent ${e.data.sent}`);
}
});
// Register the periodic background sync tag (Chromium only).
if (reg.sync) {
await reg.sync.register("usagidb");
}
// Fall back: drain on regular online events.
window.addEventListener("online", () => {
if (navigator.serviceWorker.controller) {
navigator.serviceWorker.controller.postMessage({ kind: "drain" });
}
});
document.getElementById("bgsync_pill").textContent = "bg-sync: on";
document.getElementById("bgsync_pill").classList.remove("off");
log_sync("✅ Service Worker registered. Offline pushes queue → flush on reconnect.");
} catch (err) {
log_sync("⚠️ SW register failed: " + err.message);
}
};
</script>
</body>
</html>