feat: switch to ystream persistence (#4)

* feat: add basic ystream setup

* chore: update upstream

* chore: bump ystream

* refactor: bump api

* feat: switch persistence

.vscode/launch.template.json

@@ -8,7 +8,7 @@
       "skipFiles": ["<node_internals>/**"],
       "env": {
         "NODE_OPTIONS": "--import=./register.js",
-        "INSTANCE_NAME": "",
+        "INSTANCE_NAME": "demo",
         "PORT": "3000"
       },
       "program": "${workspaceFolder}/packages/server/src/index.ts",

packages/server/package.json

@@ -5,10 +5,11 @@
   "type": "module",
   "scripts": {
     "start": "NODE_OPTIONS=--import=./register.js node src/index.ts",
-    "clean": "rm -rf ./.db*"
+    "clean": "rm -rf ./.db* db*.json"
   },
   "dependencies": {
     "@notesuite/common": "workspace:*",
+    "@y/stream": "^0.0.3",
     "body-parser": "^1.20.2",
     "cors": "^2.8.5",
     "express": "^4.19.2",
@@ -19,7 +20,6 @@
     "ts-node": "^10.9.2",
     "webdav-server": "^2.6.2",
     "ws": "^8.16.0",
-    "y-leveldb": "^0.1.2",
     "y-protocols": "^1.0.6",
     "y-websocket": "^2.0.2",
     "yjs": "^13.5.6"

packages/server/src/api.ts

@@ -1,6 +1,6 @@
 import * as Y from 'yjs';
 // @ts-ignore
-import { getYDoc } from './third-party/y-websocket.js';
+import { getYDoc } from './ystream/adaptor.js';
 import type { AppContext } from './utils.js';
 // import { exportSnapshot } from '@notesuite/common/dist/editor.js';
 

packages/server/src/third-party/y-websocket.js

@@ -7,6 +7,7 @@ import * as encoding from 'lib0/encoding'
 import * as decoding from 'lib0/decoding'
 import * as map from 'lib0/map'
 import * as lodash from 'lodash'
+import { getYDoc as getYstreamDoc } from '../ystream/adaptor.js'
 
 const { debounce } = lodash
 
@@ -25,44 +26,8 @@ const wsReadyStateClosed = 3 // eslint-disable-line
 
 // disable gc when using snapshots!
 const gcEnabled = process.env.GC !== 'false' && process.env.GC !== '0'
-const persistenceDir = `./.db-${process.env.INSTANCE_NAME || 'default'}`
-/**
- * @type {{bindState: function(string,WSSharedDoc):void, writeState:function(string,WSSharedDoc):Promise<any>, provider: any}|null}
- */
-let persistence = null
-if (typeof persistenceDir === 'string') {
-  console.info('Persisting documents to "' + persistenceDir + '"')
-  // @ts-ignore
-  const { LeveldbPersistence } = await import('y-leveldb')
-  const ldb = new LeveldbPersistence(persistenceDir)
-  persistence = {
-    provider: ldb,
-    bindState: async (docName, ydoc) => {
-      const persistedYdoc = await ldb.getYDoc(docName)
-      const newUpdates = Y.encodeStateAsUpdate(ydoc)
-      ldb.storeUpdate(docName, newUpdates)
-      Y.applyUpdate(ydoc, Y.encodeStateAsUpdate(persistedYdoc))
-      ydoc.on('update', update => {
-        ldb.storeUpdate(docName, update)
-      })
-    },
-    writeState: async (_docName, _ydoc) => {}
-  }
-}
-
-/**
- * @param {{bindState: function(string,WSSharedDoc):void,
- * writeState:function(string,WSSharedDoc):Promise<any>,provider:any}|null} persistence_
- */
-export const setPersistence = persistence_ => {
-  persistence = persistence_
-}
 
-/**
- * @return {null|{bindState: function(string,WSSharedDoc):void,
-  * writeState:function(string,WSSharedDoc):Promise<any>}|null} used persistence layer
-  */
-export const getPersistence = () => persistence
+let persistence = null
 
 /**
  * @type {Map<string,WSSharedDoc>}
@@ -167,10 +132,11 @@ export const getYDoc = async (docname, gc = true) => {
   if (!doc) {
     doc = new WSSharedDoc(docname)
     doc.gc = gc
-    if (persistence !== null) {
-      await persistence.bindState(docname, doc)
-    }
     docs.set(docname, doc)
+
+    const peerDoc = await getYstreamDoc(docname)
+    peerDoc.on('update', update => Y.applyUpdate(doc, update))    
+    doc.on('update', update => Y.applyUpdate(peerDoc, update))
   }
   return doc;
 }

packages/server/src/utils.ts

@@ -6,11 +6,11 @@ import { JSONFilePreset } from 'lowdb/node';
 import type http from 'http';
 import {
   setupWSConnection,
-  getYDoc,
   docs as serverDocs,
   // @ts-ignore
 } from './third-party/y-websocket.js';
 import * as Y from 'yjs';
+import { getYDoc } from './ystream/adaptor.js';
 
 const instanceName = process.env.INSTANCE_NAME || 'default';
 const docs = serverDocs as Map<string, Y.Doc>;
@@ -44,7 +44,7 @@ async function initDB() {
     activeWorkspaceId?: string;
     workspaces: { id: string; rootId: string; name: string }[];
   } = { workspaces: [] };
-  const db = await JSONFilePreset(`./.db-${instanceName}/db.json`, defaultData);
+  const db = await JSONFilePreset(`./db-${instanceName}.json`, defaultData);
   await db.read();
   await db.write();
   return db;

packages/server/src/ystream/adaptor.ts

@@ -0,0 +1,42 @@
+import * as Ystream from '@y/stream';
+import * as wscomm from '@y/stream/comms/websocket';
+import * as authentication from '@y/stream/api/authentication';
+import { createWSServer } from '@y/stream/comms/websocket-server';
+import {
+  collectionDef,
+  testServerIdentity,
+  testUser,
+} from './auth.js';
+
+const dbname = `./.db-ystream-${process.env.INSTANCE_NAME}`;
+
+const remoteServer = await createWSServer({
+  port: 9000,
+  dbname,
+  identity: testServerIdentity,
+});
+
+// const comm = new wscomm.WebSocketComm('ws://localhost:9000', collectionDef);
+// await Ystream.remove(dbname);
+const ystream = await Ystream.open(dbname, {
+  // comms: [comm],
+});
+await authentication.registerUser(ystream, testServerIdentity.user, {
+  isTrusted: true,
+});
+await authentication.setUserIdentity(
+  ystream,
+  testUser.user,
+  await testUser.user.publicKey,
+  testUser.privateKey
+);
+
+const { owner, name } = collectionDef;
+const collection = ystream.getCollection(owner, name) as Ystream.Collection;
+
+
+export async function getYDoc(id: string) {
+  const ydoc = collection.getYdoc(id);
+  await ydoc.whenLoaded;
+  return ydoc;
+}

packages/server/src/ystream/auth.ts

@@ -0,0 +1,39 @@
+import * as dbtypes from '@y/stream/api/dbtypes';
+import * as json from 'lib0/json';
+import * as buffer from 'lib0/buffer';
+import * as decoding from 'lib0/decoding';
+import * as ecdsa from 'lib0/crypto/ecdsa';
+
+const testUserRaw = {
+  privateKey:
+    '{"key_ops":["sign"],"ext":true,"kty":"EC","x":"pAUmLYc-UFmPIt7leafPTbhxQyygcaW7__nPcUNCuu0wH27yS9P_pWFP1GwcsoAN","y":"u3109KjrPGsNUn2k5Whn2uHLAckQPdLNqtM4GpBEpUJwlvVDvk71-lS3YOEYJ_Sq","crv":"P-384","d":"OHnRw5an9hlSqSKg966lFRvB7dow669pVSn7sFZUi7UQh_Y9Xc95SQ6pEWsofsYD"}',
+  user: 'AMgBeyJrZXlfb3BzIjpbInZlcmlmeSJdLCJleHQiOnRydWUsImt0eSI6IkVDIiwieCI6InBBVW1MWWMtVUZtUEl0N2xlYWZQVGJoeFF5eWdjYVc3X19uUGNVTkN1dTB3SDI3eVM5UF9wV0ZQMUd3Y3NvQU4iLCJ5IjoidTMxMDlLanJQR3NOVW4yazVXaG4ydUhMQWNrUVBkTE5xdE00R3BCRXBVSndsdlZEdms3MS1sUzNZT0VZSl9TcSIsImNydiI6IlAtMzg0In0=',
+};
+
+const testServerIdentityRaw = {
+  privateKey:
+    '{"key_ops":["sign"],"ext":true,"kty":"EC","x":"CYwMakpn0onaNeCa-wqLn4Fzsris_UY4Z5gRQUA9xQOoh94YG9OHhItr6rovaYpZ","y":"74Ulju86IUMJZsYsSjxSjusLjj9U6rozZwbK9Xaqj3MgIWtnjNyjL1D-NzOP3FJ7","crv":"P-384","d":"-yKNOty9EshGL0yAOQ2q6c_b_PNCpeEK9FVPoB0wc9EUyt9BR4DZuqrC9t_DgNaF"}',
+  user: 'AMgBeyJrZXlfb3BzIjpbInZlcmlmeSJdLCJleHQiOnRydWUsImt0eSI6IkVDIiwieCI6IkNZd01ha3BuMG9uYU5lQ2Etd3FMbjRGenNyaXNfVVk0WjVnUlFVQTl4UU9vaDk0WUc5T0hoSXRyNnJvdmFZcFoiLCJ5IjoiNzRVbGp1ODZJVU1KWnNZc1NqeFNqdXNMamo5VTZyb3pad2JLOVhhcWozTWdJV3Ruak55akwxRC1Oek9QM0ZKNyIsImNydiI6IlAtMzg0In0=',
+};
+
+export const testUser = {
+  privateKey: await ecdsa.importKeyJwk(json.parse(testUserRaw.privateKey)),
+  user: dbtypes.UserIdentity.decode(
+    decoding.createDecoder(buffer.fromBase64(testUserRaw.user))
+  ),
+};
+
+export const testServerIdentity = {
+  privateKey: await ecdsa.importKeyJwk(
+    json.parse(testServerIdentityRaw.privateKey)
+  ),
+  user: dbtypes.UserIdentity.decode(
+    decoding.createDecoder(buffer.fromBase64(testServerIdentityRaw.user))
+  ),
+};
+
+export const owner = testUser.user.hash;
+export const collectionDef = {
+  owner: buffer.toBase64(owner),
+  name: 'c1',
+};