Improve text synchronization performance

client/package-lock.json

@@ -2190,6 +2190,12 @@
       "resolved": "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz",
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4="
     },
+    "@types/lodash": {
+      "version": "4.14.167",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.167.tgz",
+      "integrity": "sha512-w7tQPjARrvdeBkX/Rwg95S592JwxqOjmms3zWQ0XZgSyxSLdzWaYH3vErBhdVS/lRBX7F8aBYcYJYTr5TMGOzw==",
+      "dev": true
+    },
     "@types/minimatch": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",

client/package.json

@@ -14,6 +14,7 @@
     "@types/react-dom": "^16.9.10",
     "automerge": "^0.14.2",
     "diff-match-patch": "^1.0.5",
+    "lodash": "^4.17.20",
     "node-sass": "^4.14.1",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
@@ -49,5 +50,7 @@
       "last 1 safari version"
     ]
   },
-  "devDependencies": {}
+  "devDependencies": {
+    "@types/lodash": "^4.14.167"
+  }
 }

client/src/app/App.tsx

@@ -1,4 +1,4 @@
-import { createClient, FluenceClient, subscribeToEvent } from '@fluencelabs/fluence';
+import { createClient, FluenceClient } from '@fluencelabs/fluence';
 import { dev } from '@fluencelabs/fluence-network-environment';
 import React, { useEffect, useState } from 'react';
 
@@ -16,6 +16,7 @@ const App = () => {
     useEffect(() => {
         const fn = async () => {
             const c = await createClient(dev[0]);
+
             setClient(c);
         };
         fn();
@@ -66,11 +67,14 @@ const App = () => {
                             Leave Room
                         </button>
                     </div>
+                    <div>
+                        <button onClick={() => calls.clean(client!)}>Clean</button>
+                    </div>
                 </div>
 
                 <div className="wrapper">
                     <div>{isInRoom && client && <CollaborativeEditor />}</div>
-                    {/* <div>{isInRoom && client && <UserList selfName={nickName} />}</div> */}
+                    <div>{isInRoom && client && <UserList selfName={nickName} />}</div>
                 </div>
             </div>
         </FluenceClientContext.Provider>

client/src/app/CollaborativeEditor.tsx

@@ -4,7 +4,8 @@ import { useEffect, useState } from 'react';
 import { fluentPadServiceId, notifyTextUpdateFnName } from 'src/fluence/constants';
 import { useFluenceClient } from './FluenceClientContext';
 import * as calls from 'src/fluence/calls';
-import { subscribeToEvent } from '@fluencelabs/fluence';
+import { FluenceClient, subscribeToEvent } from '@fluencelabs/fluence';
+import _ from 'lodash';
 
 interface TextDoc {
     value: Automerge.Text;
@@ -78,13 +79,26 @@ const applyStates = (startingDoc: TextDoc | null, entries: calls.Entry[]) => {
     return res;
 };
 
+const broadcastUpdates = _.debounce(async (client: FluenceClient, doc: TextDoc) => {
+    const entry = {
+        fluentPadState: Automerge.save(doc),
+    };
+    const entryStr = JSON.stringify(entry);
+
+    await calls.addEntry(client, entryStr);
+}, 200);
+
 export const CollaborativeEditor = () => {
     const client = useFluenceClient()!;
-    const [text, setText] = useState<TextDoc | null>(null);
+    const [text, setText] = useState<TextDoc | null>(Automerge.from({ value: new Automerge.Text() }));
 
     useEffect(() => {
         const unsub1 = subscribeToEvent(client, fluentPadServiceId, notifyTextUpdateFnName, (args, tetraplets) => {
-            const [stateStr, isAuthorized] = args;
+            const [authorPeerId, stateStr, isAuthorized] = args;
+            if (authorPeerId === client.selfPeerId.toB58String()) {
+                return;
+            }
+
             const state = parseState(stateStr);
             if (state && text) {
                 const newDoc = Automerge.merge(text, state);
@@ -116,19 +130,13 @@ export const CollaborativeEditor = () => {
         setText(newDoc);
 
         // don't block
-        setImmediate(async () => {
-            const entry = {
-                fluentPadState: Automerge.save(newDoc),
-            };
-            const entryStr = JSON.stringify(entry);
-
-            await calls.addEntry(client, entryStr);
-        });
+        setImmediate(broadcastUpdates, client, newDoc);
     };
 
     return (
         <div>
             <textarea value={textValue} disabled={!text} onChange={handleTextUpdate} />
+            <div>
                 Automerge changes:
                 <ul>
                     {amHistory.map((value, index) => (
@@ -136,5 +144,6 @@ export const CollaborativeEditor = () => {
                     ))}
                 </ul>
             </div>
+        </div>
     );
 };

client/src/fluence/calls.ts

@@ -262,7 +262,7 @@ export const addEntry = async (client: FluenceClient, entry: string) => {
                             (par
                                 (seq
                                     (call u.$.relay_id ("op" "identity") [])
-                                    (call u.$.peer_id (fluentPadServiceId notifyTextUpdate) [entry token.$.["is_authenticated"]])
+                                    (call u.$.peer_id (fluentPadServiceId notifyTextUpdate) [myPeerId entry token.$.["is_authenticated"]])
                                 )
                                 (next u)
                             )
@@ -284,7 +284,29 @@ export const addEntry = async (client: FluenceClient, entry: string) => {
             fluentPadServiceId: fluentPadServiceId,
             notifyTextUpdate: notifyTextUpdateFnName,
         },
-        99999999,
+    );
+
+    await sendParticle(client, particle);
+};
+
+export const clean = async (client: FluenceClient) => {
+    const particle = new Particle(
+        `
+            (seq
+                (call myRelay ("op" "identity") [])
+                (seq
+                    (call userlistNode (userlist "clear") [])
+                    (call historyNode (history "clear") [])
+                )
+            )
+        `,
+        {
+            myRelay: client.relayPeerID.toB58String(),
+            userlist: userListServiceId,
+            history: historyServiceId,
+            userlistNode: userListNodePid,
+            historyNode: historyNodePid,
+        },
     );
 
     await sendParticle(client, particle);

client/src/fluence/constants.ts

@@ -7,8 +7,8 @@ export const notifyUserAddedFnName = 'notifyUserAdded';
 export const notifyUserRemovedFnName = 'notifyUserRemoved';
 export const notifyTextUpdateFnName = 'notifyTextUpdate';
 
-export const userListServiceId = '65b7232f-45ff-464f-a804-c4c8ce563726';
-export const historyServiceId = '29a5724d-c865-42fe-bfc1-e2c6b84a89b4';
+export const userListServiceId = '03edcc81-7777-4234-b048-36305d8d65e2';
+export const historyServiceId = '7fb57031-1d3d-4391-9a9f-da40a6c4963d';
 
 export const userListNodePid = dev[2].peerId;
 export const historyNodePid = dev[2].peerId;