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WIP re-implement persistence with compaction

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This commit is contained in:
Chris Mounce
2025-09-21 11:48:56 -07:00
parent fc3dbf2dd6
commit cfae45aca9
2 changed files with 157 additions and 8 deletions
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src/sync.ts
+8 -8
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@@ -5,8 +5,8 @@ import { assert, generateId } from './util';
import { getDocsMap, getVaultMap, type DocMap } from './vault';
const DB_NAME = 'synced-docs';
const LOCAL_DELTA_STORE = 'local-updates';
const VAULT_STORE = 'vaults';
export const LOCAL_DELTA_STORE = 'local-updates';
export const VAULT_STORE = 'vaults';
type LocalDeltaKey = [string, number];
type VaultRecord = { id: string };
@@ -22,7 +22,7 @@ interface DocsDatabase extends DBSchema {
};
}
const db = await openDB<DocsDatabase>(DB_NAME, 3, {
export const docsDb = await openDB<DocsDatabase>(DB_NAME, 3, {
upgrade(db, oldVersion, newVersion) {
console.log(`Running upgrade from ${oldVersion} to ${newVersion}`);
if (oldVersion < 2) {
@@ -59,7 +59,7 @@ export class LocalDocument {
public static async load(id: string): Promise<LocalDocument> {
// Build Y.Doc from records on disk
const updates: Uint8Array[] = await db.getAll(
const updates: Uint8Array[] = await docsDb.getAll(
LOCAL_DELTA_STORE,
IDBKeyRange.bound([id, -Infinity], [id, Infinity])
);
@@ -78,7 +78,7 @@ export class LocalDocument {
if (batch.length > 0) {
const update = Y.mergeUpdates(batch);
const key: LocalDeltaKey = [this.id, new Date().valueOf()];
await db.add(LOCAL_DELTA_STORE, update, key);
await docsDb.add(LOCAL_DELTA_STORE, update, key);
this.totalUpdates += 1;
}
}
@@ -90,13 +90,13 @@ export class LocalDocument {
}
async function getOrCreateVaultDoc() {
const records = await db.getAll(VAULT_STORE);
const records = await docsDb.getAll(VAULT_STORE);
if (records.length > 1) {
throw new Error(`Expected 1 vault record, got ${records.length}`);
} else if (records.length === 0) {
const key = generateId();
const value = { id: key };
await db.add(VAULT_STORE, value, key);
await docsDb.add(VAULT_STORE, value, key);
records.push(value);
}
@@ -135,7 +135,7 @@ if (docsMap.size === 0) {
const docInfo = new Y.Map([['title', oldKey]]) as DocMap;
docsMap.set(newId, docInfo);
const tx = db.transaction(LOCAL_DELTA_STORE, 'readwrite');
const tx = docsDb.transaction(LOCAL_DELTA_STORE, 'readwrite');
const recordKeys = (await tx.store.getAllKeys(
IDBKeyRange.bound([oldKey, -Infinity], [oldKey, Infinity])
)) as LocalDeltaKey[];