tracker css batching/inlining (#3334)

* tracker: initial css inlining functionality

* tracker: add tests, adjust sheet id, stagger rule sending

* removed sorting

* upgrade css inliner

* ui: better logging for ocunter

* tracker: force-fetch mode for cssInliner

* tracker: fix ts warns

* tracker: use debug opts

* tracker: 16.2.0 changelogs, inliner opts

* tracker: remove debug options

---------

Co-authored-by: Андрей Бабушкин <andreybabushkin2000@gmail.com>

frontend/app/player/web/TabManager.ts

@@ -348,19 +348,19 @@ export default class TabSessionManager {
             break;
           case MType.CreateTextNode:
           case MType.CreateElementNode:
-            this.windowNodeCounter.addNode(msg.id, msg.parentID);
+            this.windowNodeCounter.addNode(msg);
             this.performanceTrackManager.setCurrentNodesCount(
               this.windowNodeCounter.count,
             );
             break;
           case MType.MoveNode:
-            this.windowNodeCounter.moveNode(msg.id, msg.parentID);
+            this.windowNodeCounter.moveNode(msg);
             this.performanceTrackManager.setCurrentNodesCount(
               this.windowNodeCounter.count,
             );
             break;
           case MType.RemoveNode:
-            this.windowNodeCounter.removeNode(msg.id);
+            this.windowNodeCounter.removeNode(msg);
             this.performanceTrackManager.setCurrentNodesCount(
               this.windowNodeCounter.count,
             );

frontend/app/player/web/managers/DOM/VirtualDOM.ts

@@ -257,6 +257,7 @@ export class VElement extends VParent<Element> {
 
   applyChanges() {
     this.prioritized && this.applyPrioritizedChanges();
+    this.node.data = this.data;
     this.applyAttributeChanges();
     super.applyChanges();
   }

frontend/app/player/web/managers/WindowNodeCounter.ts

@@ -54,40 +54,45 @@ export default class WindowNodeCounter {
     this.nodes = [this.root];
   }
 
-  addNode(id: number, parentID: number) {
+  addNode(msg: { id: number, parentID: number, time: number }): boolean {
+    const { id, parentID } = msg;
     if (!this.nodes[parentID]) {
       // TODO: iframe case
       // console.error(`Wrong! Node with id ${ parentID } (parentId) not found.`);
-      return;
+      return false;
     }
     if (this.nodes[id]) {
       // console.error(`Wrong! Node with id ${ id } already exists.`);
-      return;
+      return false;
     }
     this.nodes[id] = this.nodes[parentID].newChild();
+    return true;
   }
 
-  removeNode(id: number) {
+  removeNode({ id }: { id: number }) {
     if (!this.nodes[id]) {
       // Might be text node
       // console.error(`Wrong! Node with id ${ id } not found.`);
-      return;
+      return false;
     }
     this.nodes[id].removeNode();
+    return true;
   }
 
-  moveNode(id: number, parentId: number) {
+  moveNode(msg: { id: number, parentID: number, time: number }) {
+    const { id, parentID, time } = msg;
     if (!this.nodes[id]) {
-      console.warn(`Node Counter: Node with id ${id} not found.`);
-      return;
+      console.warn(`Node Counter: Node with id ${id} (parent: ${parentID}) not found. time: ${time}`);
+      return false;
     }
-    if (!this.nodes[parentId]) {
+    if (!this.nodes[parentID]) {
       console.warn(
-        `Node Counter: Node with id ${parentId} (parentId) not found.`,
+        `Node Counter: Node with id ${parentID} (parentId) not found. time: ${time}`,
       );
-      return;
+      return false;
     }
-    this.nodes[id].moveNode(this.nodes[parentId]);
+    this.nodes[id].moveNode(this.nodes[parentID]);
+    return true;
   }
 
   get count() {

tracker/tracker/CHANGELOG.md

@@ -1,3 +1,46 @@
+## 16.2.0
+
+- css batching and inlining via (!plain mode will cause fake text nodes in style tags occupying 99*10^6 id space, can conflict with crossdomain iframes!)
+
+```
+inlineRemoteCss: boolean
+  inlinerOptions?: {
+    forceFetch?: boolean,
+    forcePlain?: boolean,
+  }
+```
+
+## 16.1.4
+
+- bump proxy version to .3
+
+## 16.1.3
+
+- same as previous, more strict checks for body obj
+
+## 16.1.2
+
+- bump networkProxy version (prevent reusage of body streams, fix for sanitizer network body checks)
+
+## 16.1.1
+
+- fixing debug logs from 16.1.0
+
+## 16.1.0
+
+- new `privateMode` option to hide all possible data from tracking
+- update `networkProxy` to 1.1.0 (auto sanitizer for sensitive parameters in network requests)
+- reduced the frequency of performance tracker calls
+- reduced the number of events when the user is idle
+
+## 16.0.3
+
+- better handling for local svg spritemaps
+
+## 16.0.2
+
+- fix attributeSender key generation to prevent calling native methods on objects
+
 ## 16.0.1
 
 - drop computing ts digits
@@ -36,7 +79,7 @@ tracker.start()
 ## 15.0.5
 
 - update medv/finder to 4.0.2 for better support of css-in-js libs
-- fixes for single tab recording 
+- fixes for single tab recording
 - add option to disable network completely `{ network: { disabled: true } }`
 - fix for batching during offline recording syncs
 

tracker/tracker/src/main/app/index.ts

@@ -318,16 +318,14 @@ export default class App {
       __save_canvas_locally: false,
       localStorage: null,
       sessionStorage: null,
-      disableStringDict: true,
       forceSingleTab: false,
       assistSocketHost: '',
       fixedCanvasScaling: false,
       disableCanvas: false,
       captureIFrames: true,
-      disableSprites: false,
-      inlineRemoteCss: true,
-      obscureTextEmails: true,
+      obscureTextEmails: false,
       obscureTextNumbers: false,
+      disableStringDict: false,
       crossdomain: {
         parentDomain: '*',
       },
@@ -338,6 +336,12 @@ export default class App {
         useAnimationFrame: false,
       },
       forceNgOff: false,
+      inlineRemoteCss: false,
+      disableSprites: false,
+      inlinerOptions: {
+        forceFetch: false,
+        forcePlain: false,
+      }
     }
     this.options = simpleMerge(defaultOptions, options)
 

tracker/tracker/src/main/app/observer/cssInliner.ts

@@ -11,10 +11,8 @@ export function inlineRemoteCss(
   sendPlain?: boolean,
   onPlain?: (cssText: string, id: number) => void,
 ) {
-  const sheetId = sendPlain ? null : getNextID();
-  if (!sendPlain) {
-    addOwner(sheetId!, id);
-  }
+  const sheetId = getNextID();
+  addOwner(sheetId, id);
 
   const sheet = node.sheet;
 
@@ -27,7 +25,7 @@ export function inlineRemoteCss(
         return;
       }
     } catch (e) {
-      // console.warn("Could not stringify sheet, falling back to fetch:", e);
+      console.warn("Could not stringify sheet, falling back to fetch:", e);
     }
   }
 
@@ -36,19 +34,18 @@ export function inlineRemoteCss(
     fetch(node.href)
       .then(response => {
         if (!response.ok) {
-          throw new Error(`response status ${response.status}`);
+          throw new Error(`Failed to fetch CSS: ${response.status}`);
         }
         return response.text();
       })
       .then(cssText => {
         if (sendPlain && onPlain) {
           onPlain(cssText, fakeIdHolder++);
-        } else {
-          processCssText(cssText);
         }
+        processCssText(cssText);
       })
       .catch(error => {
-        console.error(`OpenReplay: Failed to fetch CSS from ${node.href}:`, error);
+        console.error(`Failed to fetch CSS from ${node.href}:`, error);
       });
   }
 
@@ -60,7 +57,7 @@ export function inlineRemoteCss(
     const ruleTexts = parseCSS(cssText);
 
     for (let i = 0; i < ruleTexts.length; i++) {
-      insertRule(sheetId!, ruleTexts[i], i, baseHref);
+      insertRule(sheetId, ruleTexts[i], i, baseHref);
     }
   }
 

tracker/tracker/src/main/app/observer/observer.ts

@@ -394,7 +394,7 @@ export default abstract class Observer {
             (cssText: string, fakeTextId: number) => {
               this.app.send(CreateTextNode(fakeTextId, id, 0))
               setTimeout(() => {
-                this.app.send(SetCSSDataURLBased(fakeTextId, cssText, this.app.getBaseHref()))
+                this.app.send(SetNodeData(fakeTextId, cssText))
               }, 10)
             }
           )

tracker/tracker/src/main/app/observer/top_observer.ts

@@ -20,6 +20,10 @@ export interface Options {
    * @default false
    * */
   inlineRemoteCss: boolean
+  inlinerOptions?: {
+    forceFetch?: boolean,
+    forcePlain?: boolean,
+  }
 }
 
 type Context = Window & typeof globalThis
@@ -95,7 +99,7 @@ export default class TopObserver extends Observer {
           this.app.debug.info('doc already observed for', id)
           return
         }
-        const observer = new IFrameObserver(this.app)
+        const observer = new IFrameObserver(this.app, false, {})
         this.iframeObservers.set(iframe, observer)
         this.docObservers.set(currentDoc, observer)
         this.iframeObserversArr.push(observer)

tracker/tracker/src/tests/cssInliner.test.ts

@@ -53,7 +53,7 @@ describe('inlineRemoteCss', () => {
     jest.runAllTimers();
     expect(mockNextID).toHaveBeenCalled();
     expect(mockAdoptedSSAddOwner).toHaveBeenCalledWith(123, 456);
-    expect(mockAdoptedSSInsertRuleURLBased).toHaveBeenCalledWith(456, 'body { color: red; }', 0, 'http://example.com');
+    expect(mockAdoptedSSInsertRuleURLBased).toHaveBeenCalledWith(123, 'body { color: red; }', 0, 'http://example.com');
     jest.useRealTimers();
   });
 
@@ -73,6 +73,12 @@ describe('inlineRemoteCss', () => {
   test('should handle successful fetch and process CSS text', async () => {
     mockNode.href = 'http://example.com/style.css';
     const mockSheet = {};
+    global.fetch.mockImplementationOnce(() =>
+      Promise.resolve({
+        ok: true,
+        text: () => Promise.resolve('body { color: red; }')
+      })
+    );
     Object.defineProperty(mockSheet, 'cssRules', {
       get: () => { throw new Error('CORS error'); }
     });
@@ -80,18 +86,26 @@ describe('inlineRemoteCss', () => {
       get: () => mockSheet
     });
     inlineRemoteCss(mockNode, 456,  'http://example.com',mockNextID,mockAdoptedSSInsertRuleURLBased, mockAdoptedSSAddOwner);
-    await new Promise(process.nextTick);
+    await new Promise(resolve => setTimeout(resolve, 0));
     expect(mockNextID).toHaveBeenCalled();
     expect(mockAdoptedSSAddOwner).toHaveBeenCalledWith(123, 456);
     expect(mockAdoptedSSInsertRuleURLBased).toHaveBeenCalledWith(123, 'body { color: red; }', 0, 'http://example.com');
+    jest.useRealTimers();
   });
 
-  test('should fetch CSS if node has no sheet but has href', () => {
+  test('should fetch CSS if node has no sheet but has href', async () => {
     Object.defineProperty(mockNode, 'sheet', {
       get: () => null
     });
+    global.fetch.mockImplementationOnce(() =>
+      Promise.resolve({
+        ok: true,
+        text: () => Promise.resolve('body { color: red; }')
+      })
+    );
     mockNode.href = 'http://example.com/style.css';
     inlineRemoteCss(mockNode, 456,  'http://example.com',mockNextID,mockAdoptedSSInsertRuleURLBased, mockAdoptedSSAddOwner);
+    await new Promise(resolve => setTimeout(resolve, 0));
     expect(global.fetch).toHaveBeenCalledWith('http://example.com/style.css');
   });