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Looker caching updates #5051

Merged
merged 4 commits into from
Nov 7, 2024
Merged

Looker caching updates #5051

merged 4 commits into from
Nov 7, 2024

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benjaminpkane
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@benjaminpkane benjaminpkane commented Nov 6, 2024

What changes are proposed in this pull request?

Adds (back) size bytes caching for frame data streams (ImaVid and VideoLooker) and fixed size of 500 lookers for the grid. This more closely matches caching behavior prior to routing and grid updates released in 0.25

What areas of FiftyOne does this PR affect?

  • App: FiftyOne application changes
  • Build: Build and test infrastructure changes
  • Core: Core fiftyone Python library changes
  • Documentation: FiftyOne documentation changes
  • Other

Summary by CodeRabbit

Release Notes

  • New Features

    • Introduced a new sizeBytesEstimate function for estimating the size of various data types.
    • Added getSizeBytes methods to Overlay and ClassificationsOverlay classes for size estimation.
  • Changes

    • Removed caching-related functionalities from various components, simplifying the options and state management.
    • Updated constants for improved configuration of frame stream sizes.
    • Enhanced frame management logic for better performance and clarity.
    • Adjusted VideoConfig interface to remove the maxFrameStreamSize property.
  • Bug Fixes

    • Streamlined error handling and control flow in frame fetching and state updates.

@benjaminpkane benjaminpkane self-assigned this Nov 6, 2024
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📥 Commits

Reviewing files that changed from the base of the PR and between 7a00762 and 09d21e0.

Walkthrough

The changes in this pull request involve multiple modifications across various files, primarily focusing on the removal of caching mechanisms and the simplification of resource management logic. Key alterations include the removal of components and properties related to caching, updates to function signatures, and the introduction of new constants for managing frame sizes. The overall structure and control flow of the affected components remain consistent, with a focus on enhancing clarity and reducing complexity.

Changes

File Path Change Summary
app/packages/app/src/routing/RouterContext.ts Updated getEntryResource to include current parameter; modified isReusable to remove location.search check.
app/packages/core/src/components/Actions/Options.tsx Removed Caching component and associated state management and imports.
app/packages/core/src/components/Grid/Grid.tsx Removed caching from useRefreshers hook and hardcoded retainItems in Spotlight.
app/packages/core/src/components/Grid/recoil.ts Removed lookerGridCachingStore atomFamily and lookerGridCaching selector.
app/packages/core/src/components/Grid/useRefreshers.ts Removed lookerGridCaching import; added constants MAX_LRU_CACHE_ITEMS and MAX_LRU_CACHE_SIZE.
app/packages/looker/src/constants.ts Updated CHUNK_SIZE from 20 to 30; added MAX_FRAME_STREAM_SIZE and MAX_FRAME_STREAM_SIZE_BYTES.
app/packages/looker/src/lookers/frame-reader.ts Removed maxFrameStreamSize from AcquireReaderOptions; simplified createCache function.
app/packages/looker/src/lookers/imavid/controller.ts Removed maxFrameStreamSize from constructor; simplified executeFetch method.
app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts Removed cacheSize from constructor; updated cache initialization with new constants.
app/packages/looker/src/lookers/video.ts Updated setReader method to include maxFrameStreamSize and maxFrameStreamSizeBytes parameters.
app/packages/looker/src/overlays/base.ts Added getSizeBytes method to Overlay interface; implemented in CoordinateOverlay class.
app/packages/looker/src/overlays/classifications.ts Added getSizeBytes method to ClassificationsOverlay class.
app/packages/looker/src/state.ts Removed maxFrameStreamSize from VideoConfig interface.
app/packages/state/src/hooks/index.ts Removed frameCacheSize export from useCreateLooker.
app/packages/state/src/hooks/useCreateLooker.ts Removed frameCacheSizeStore atomFamily and frameCacheSize selector.
app/packages/utilities/src/index.ts Added export for sizeBytesEstimate function.
app/packages/utilities/src/size-bytes-estimate.ts Introduced sizeBytesEstimate function for estimating the size of various data types.

Possibly related PRs

  • Add ability to dynamically alter 3D labels line width #4590: The changes in the main PR regarding the RouterContext.ts file and the makeGetEntryResource function may relate to the enhancements in the Cuboid component's rendering logic, as both involve resource management and rendering improvements.
  • ImaVid with new timeline API #4816: The modifications in the ImaVidLooker component and the introduction of the timeline feature are directly related to the changes in the main PR, which also focuses on refining resource management and functionality within the routing context.
  • Video playback #4878: The updates to the ImaVidLookerReact component for video playback align with the main PR's focus on improving resource management and functionality, particularly in the context of handling video samples.
  • Fix updateSample in useLooker #4905: The fix for the updateSample function in the useLooker hook is relevant as it addresses issues with sample management, which is a core aspect of the changes in the main PR.
  • Fix video tooltip #4916: The modifications to the ModalLooker component and the reintroduction of the video tooltip are related to the overall improvements in user experience and functionality that the main PR aims to achieve.
  • fix carousel lookers rendering as imavid in ordered dynamic groups #4938: The changes to the rendering of lookers in dynamic groups are relevant as they involve adjustments to how samples are displayed, which connects to the main PR's focus on refining resource management.
  • debounce modal navigation #5009: The implementation of debouncing for modal navigation is related to the main PR's goal of enhancing user experience and responsiveness in the application.
  • additional panel meta (is_new, beta, category) #5038: The introduction of additional panel metadata aligns with the main PR's focus on improving the organization and categorization of components, enhancing the overall functionality of the application.

Suggested labels

app, bug

Suggested reviewers

  • sashankaryal
  • ritch

🐰 In the meadow, changes bloom,
Caching gone, we make room.
Resources now, in simpler flow,
Frame sizes set, watch them grow!
With each update, we hop and cheer,
For a cleaner code, we hold dear! 🐇✨


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@benjaminpkane benjaminpkane requested a review from a team November 6, 2024 19:05
@benjaminpkane benjaminpkane marked this pull request as ready for review November 6, 2024 19:07
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Actionable comments posted: 4

🧹 Outside diff range and nitpick comments (16)
app/packages/looker/src/constants.ts (1)

27-28: Add documentation for frame stream size limits.

The new constants MAX_FRAME_STREAM_SIZE and MAX_FRAME_STREAM_SIZE_BYTES lack documentation explaining their purpose and implications. Consider adding JSDoc comments to clarify:

  • Why these specific values were chosen
  • What happens when these limits are reached
  • How they relate to the caching mechanism
+/** Maximum number of frames allowed in a stream cache */
 export const MAX_FRAME_STREAM_SIZE = 5100;
+/** Maximum size in bytes (1GB) for frame stream cache */
 export const MAX_FRAME_STREAM_SIZE_BYTES = 1e9;
app/packages/utilities/src/size-bytes-estimate.ts (4)

11-14: Enhance type checking in isObject function

The current implementation might have false positives. Consider using a more precise type check.

-const isObject = (object: object) => {
+const isObject = (object: unknown): object is Record<string, unknown> | unknown[] => {
   const oClass = objectClass(object);
   return oClass === "Object" || oClass === "Array";
 };

16-18: Add JSDoc comments for type definitions

Adding documentation for these types would improve code maintainability and help other developers understand their purpose.

+/** Represents the basic types that can be measured for size */
 type SizeTypes = null | object | string | undefined;

+/** Extends SizeTypes to include arrays of measurable types */
 type SizerTypes = SizeTypes | Array<SizeTypes>;

29-37: Extract magic numbers into named constants

The byte size assumptions should be defined as named constants for better maintainability and documentation.

+const BOOLEAN_SIZE_BYTES = 8;
+const NUMBER_SIZE_BYTES = 8;
+
 if (typeof object === "boolean") {
-  // Assume 8
-  return 8;
+  return BOOLEAN_SIZE_BYTES;
 }

 if (typeof object === "number") {
-  // Assume 8
-  return 8;
+  return NUMBER_SIZE_BYTES;
 }

66-68: Add JSDoc documentation for the public API

The exported function should have comprehensive documentation explaining its purpose, parameters, and return value.

+/**
+ * Estimates the size in bytes of a given object or primitive value.
+ * This is an approximation and may not reflect the exact memory usage.
+ * @param object - The value to measure
+ * @returns The estimated size in bytes
+ */
 export default function sizeBytesEstimate(object: SizeTypes) {
   return sizer(object);
 }
app/packages/core/src/components/Grid/recoil.ts (1)

Line range hint 5-9: Consider adding explicit type annotations for all atoms.

While some atoms have type annotations (e.g., gridAt), others could benefit from explicit typing for better type safety and documentation.

Example improvements:

-export const gridPage = atom({
+export const gridPage = atom<number>({
   key: "gridPage",
   default: 0,
 });

-export const gridSpacing = atom({
+export const gridSpacing = atom<number>({
   key: "gridSpacing",
   default: 3,
   effects: [/*...*/],
 });

Also applies to: 11-14, 16-19, 21-25, 27-31, 33-37, 39-42

app/packages/core/src/components/Grid/useRefreshers.ts (1)

9-10: Consider documenting the rationale for cache size constants

The magic numbers 510 and 1e9 would benefit from documentation explaining:

  • Why 510 items specifically (vs. the previous 512)?
  • Is 1 billion bytes a reasonable upper limit for all deployment scenarios?

Consider adding comments:

+// Maximum number of lookers to keep in the grid cache
 const MAX_LRU_CACHE_ITEMS = 510;
+// Maximum cache size in bytes (1GB)
 const MAX_LRU_CACHE_SIZE = 1e9;
app/packages/state/src/hooks/index.ts (1)

12-12: Consider documenting the caching behavior change.

Since this change is part of reintroducing size bytes caching for frame data streams, consider adding a comment above the useCreateLooker export to document the new caching behavior.

+// Implements frame data stream caching with fixed size bytes
 export { default as useCreateLooker } from "./useCreateLooker";
app/packages/looker/src/overlays/base.ts (1)

138-140: Consider adding size validation.

While the implementation is correct, consider adding validation to ensure non-negative size values are returned.

 getSizeBytes(): number {
-  return sizeBytesEstimate(this.label);
+  const size = sizeBytesEstimate(this.label);
+  return Math.max(0, size);
 }
app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts (1)

30-30: Add JSDoc to document the constructor's purpose.

While the simplified constructor signature is good, adding documentation would help explain the role of storeBufferManager and the class's caching behavior.

+/**
+ * Manages frame samples with LRU caching using predefined size limits.
+ * @param storeBufferManager Manages the underlying buffer storage for frames
+ */
 constructor(storeBufferManager: BufferManager) {
app/packages/looker/src/lookers/frame-reader.ts (1)

Line range hint 1-170: Consider implementing a circuit breaker for memory pressure.

While the current implementation handles frame caching well, consider adding a circuit breaker pattern to handle extreme memory pressure scenarios:

  1. Monitor memory usage trends
  2. Temporarily reduce MAX_FRAME_STREAM_SIZE when under pressure
  3. Implement back-pressure mechanisms in the worker communication

This would make the system more resilient to varying resource conditions.

app/packages/core/src/components/Grid/Grid.tsx (2)

65-65: Document memory implications of retained items

Hardcoding retainItems to true means items will always be retained in memory, regardless of the application state. While this simplifies the logic, it could impact memory usage with large datasets.

Consider:

  1. Adding a comment explaining why items are always retained
  2. Monitoring memory usage with large datasets
  3. Adding a maximum retention limit if needed

Line range hint 1-186: Solid implementation with good React practices

The Grid component demonstrates good React patterns:

  • Proper use of hooks and memoization
  • Clean effect cleanup
  • Type-safe implementation

Consider extracting the resize handling logic into a custom hook for better reusability:

function useResizeObserver(id: string, onResize: (resizing: boolean) => void) {
  useEffect(() => {
    let width: number;
    let timeout: ReturnType<typeof setTimeout> | undefined;
    // ... existing resize logic ...
  }, [id, onResize]);
}
app/packages/looker/src/lookers/imavid/controller.ts (1)

Line range hint 1-300: Consider adding memory management documentation.

The transition to fixed-size caching is a significant change in resource management. Consider adding documentation that explains:

  • The rationale behind the fixed cache size
  • Memory usage implications
  • Guidelines for monitoring and troubleshooting cache-related issues
app/packages/state/src/hooks/useCreateLooker.ts (1)

Line range hint 35-282: LGTM: Well-structured hook implementation with proper TypeScript usage.

The hook follows React best practices with proper cleanup, memoization, and type safety. Consider extracting the media type detection logic into a separate utility function to improve maintainability.

Consider refactoring the media type detection:

+ const determineMediaType = (filePath: string, mimeType: string | null): typeof ImageLooker | typeof VideoLooker | typeof ThreeDLooker | typeof ImaVidLooker | typeof FrameLooker => {
+   if (filePath.endsWith(".pcd") || filePath.endsWith(".fo3d")) {
+     return ThreeDLooker;
+   }
+   
+   if (mimeType === null) {
+     return ImageLooker;
+   }
+   
+   const isVideo = mimeType.startsWith("video/");
+   if (isVideo && (isFrame || isPatch)) {
+     return FrameLooker;
+   }
+   if (isVideo) {
+     return VideoLooker;
+   }
+   if (!isVideo && shouldRenderImaVidLooker) {
+     return ImaVidLooker;
+   }
+   
+   return ImageLooker;
+ }

  const create = useRecoilCallback(
    ({ snapshot }) =>
      (
        { frameNumber, frameRate, sample, urls: rawUrls, symbol },
        extra: Partial<Omit<Parameters<T["updateOptions"]>[0], "selected">> = {}
      ): T => {
-       let create: typeof FrameLooker | typeof ImageLooker | typeof ImaVidLooker | typeof ThreeDLooker | typeof VideoLooker = ImageLooker;
-       // ... media type detection logic ...
+       const create = determineMediaType(filePath, mimeType);
app/packages/looker/src/overlays/classifications.ts (1)

337-339: Add TypeScript return type and documentation

The method implementation aligns well with the PR objectives for reintroducing size bytes caching. Consider these improvements:

+  /**
+   * Returns the estimated size in bytes of the labels data structure
+   * @returns {number} The estimated size in bytes
+   */
-  getSizeBytes() {
+  getSizeBytes(): number {
     return sizeBytesEstimate(this.labels);
   }
📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between f0358cb and 2a38642.

📒 Files selected for processing (17)
  • app/packages/app/src/routing/RouterContext.ts (0 hunks)
  • app/packages/core/src/components/Actions/Options.tsx (0 hunks)
  • app/packages/core/src/components/Grid/Grid.tsx (2 hunks)
  • app/packages/core/src/components/Grid/recoil.ts (1 hunks)
  • app/packages/core/src/components/Grid/useRefreshers.ts (3 hunks)
  • app/packages/looker/src/constants.ts (1 hunks)
  • app/packages/looker/src/lookers/frame-reader.ts (3 hunks)
  • app/packages/looker/src/lookers/imavid/controller.ts (1 hunks)
  • app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts (3 hunks)
  • app/packages/looker/src/lookers/video.ts (0 hunks)
  • app/packages/looker/src/overlays/base.ts (3 hunks)
  • app/packages/looker/src/overlays/classifications.ts (2 hunks)
  • app/packages/looker/src/state.ts (0 hunks)
  • app/packages/state/src/hooks/index.ts (1 hunks)
  • app/packages/state/src/hooks/useCreateLooker.ts (2 hunks)
  • app/packages/utilities/src/index.ts (1 hunks)
  • app/packages/utilities/src/size-bytes-estimate.ts (1 hunks)
💤 Files with no reviewable changes (4)
  • app/packages/app/src/routing/RouterContext.ts
  • app/packages/core/src/components/Actions/Options.tsx
  • app/packages/looker/src/lookers/video.ts
  • app/packages/looker/src/state.ts
🧰 Additional context used
📓 Path-based instructions (13)
app/packages/core/src/components/Grid/Grid.tsx (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/core/src/components/Grid/recoil.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/core/src/components/Grid/useRefreshers.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/constants.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/lookers/frame-reader.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/lookers/imavid/controller.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/overlays/base.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/looker/src/overlays/classifications.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/state/src/hooks/index.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/state/src/hooks/useCreateLooker.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/utilities/src/index.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/utilities/src/size-bytes-estimate.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

🔇 Additional comments (21)
app/packages/looker/src/constants.ts (1)

25-25: Verify performance impact of increased CHUNK_SIZE.

Increasing CHUNK_SIZE from 20 to 30 could affect memory usage and processing performance. While larger chunks reduce iteration overhead, they increase per-chunk memory requirements.

✅ Verification successful

Let me analyze the usage of CHUNK_SIZE to understand its impact better.


Let me try a different approach to understand the frame chunk processing logic.


Based on the analysis of the code, I can now provide a final response about the CHUNK_SIZE change:

CHUNK_SIZE increase is safe and aligned with streaming implementation

The increase from 20 to 30 is reasonable as:

  • It's used in frame-reader.ts for controlled frame streaming with proper buffering
  • The implementation includes safeguards:
    • Chunks are capped by frameCount using Math.min()
    • Buffering state is properly managed
    • Worker-based processing prevents UI blocking
  • Memory impact is minimal as frames are processed asynchronously through a worker
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for CHUNK_SIZE usage to understand impact
rg -A 5 "CHUNK_SIZE" --type ts

Length of output: 3288


Script:

#!/bin/bash
# Get more context around frame-reader.ts usage
ast-grep --pattern 'function $_($$_) {
  $$$
  CHUNK_SIZE
  $$$
}'

Length of output: 68


Script:

#!/bin/bash
# Get more context around frame chunk processing
rg -B 5 -A 10 "requestFrameChunk" --type ts

Length of output: 4731

app/packages/utilities/src/size-bytes-estimate.ts (1)

20-64: Verify size estimation accuracy for frame data

Since this utility is crucial for frame data stream caching, we should verify its accuracy with actual frame data.

✅ Verification successful

Let me gather more information about the data structures being sized.


Let me check the structure of FrameSample and Overlay types to complete the verification.


Size estimation implementation is appropriate for its usage

The implementation correctly handles the data structures it's used with:

  • Frame cache sizes are calculated based on overlays array, which contains objects implementing the Overlay interface
  • Each overlay implements getSizeBytes() which uses this utility
  • The implementation properly handles all data types found in these structures:
    • Objects and arrays (frame.overlays)
    • Strings (field names, labels)
    • Numbers (coordinates, frame numbers)
    • Boolean values (state flags)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for usage patterns to understand typical data structures being sized
rg -A 5 "sizeBytesEstimate" app/packages/looker/src/

Length of output: 3791


Script:

#!/bin/bash
# Check the Frame and overlay types to understand the data structures
ast-grep --pattern 'interface Frame {
  $$$
}'

# Check sample data structure
ast-grep --pattern 'interface $_ {
  sample: $_;
  $$$
}'

Length of output: 1391


Script:

#!/bin/bash
# Check FrameSample and Overlay types
ast-grep --pattern 'interface FrameSample {
  $$$
}'

ast-grep --pattern 'interface Overlay<$_> {
  $$$
}'

# Check actual usage of sizeBytesEstimate in frame-reader
rg -B 5 -A 5 "sizeCalculation.*sizeBytesEstimate" app/packages/looker/src/lookers/frame-reader.ts

Length of output: 1759

app/packages/core/src/components/Grid/recoil.ts (3)

1-3: LGTM: Clean imports and proper module organization.

The imports are well-organized, following best practices by separating external libraries from internal modules.


Line range hint 44-71: LGTM: Well-structured selector implementation.

The pageParameters selector follows best practices:

  • Proper error handling for undefined dataset
  • Clean parameter composition
  • Type-safe callback implementation

Line range hint 1-92: Verify alignment with PR objectives.

The AI summary indicates the removal of caching-related code, but the PR objective mentions "reintroducing size bytes caching". This seems contradictory and needs clarification.

app/packages/core/src/components/Grid/useRefreshers.ts (1)

40-40: LGTM! Simplified dependency array

The removal of the caching dependency aligns with the PR objectives while maintaining necessary dependencies for layout resets.

app/packages/state/src/hooks/index.ts (1)

12-12: Verify the impact of removing frameCacheSize export.

While the export of useCreateLooker hook remains, the removal of frameCacheSize export might affect consumers that directly imported this value.

Let's verify if there are any direct imports of frameCacheSize that need to be updated:

✅ Verification successful

Removal of frameCacheSize is safe as part of caching updates

The git history shows that frameCacheSize was removed as part of commit 174e080 "remove caching options, update grid lru cache". This was a deliberate change where:

  1. The frameCacheSize selector and its underlying frameCacheSizeStore atom were completely removed
  2. The maxFrameStreamSize parameter was removed from ImaVidFramesController initialization
  3. These changes align with the PR's objective of reintroducing size bytes caching for frame data streams

Since this was part of a larger caching architecture update and no other files were importing or using the frameCacheSize export, its removal is safe.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for direct imports of frameCacheSize from this module
rg "import.*\{.*frameCacheSize.*\}.*from.*['\"]@state/hooks['\"]"

# Search for any other usage of frameCacheSize
rg "frameCacheSize" --type ts --type tsx

Length of output: 140


Script:

#!/bin/bash
# Search for direct imports of frameCacheSize using ripgrep
# Note: Using a more generic pattern and then filtering
rg "import.*frameCacheSize" -g "*.{ts,js,tsx,jsx}"

# Search for any usage of frameCacheSize
rg "frameCacheSize" -g "*.{ts,js,tsx,jsx}"

# Look for the history of the file to understand the removal
git log -p app/packages/state/src/hooks/index.ts

Length of output: 73278


Script:

#!/bin/bash
# Search for frameCacheSize in useCreateLooker.ts to understand its usage
ast-grep --pattern 'frameCacheSize' app/packages/state/src/hooks/useCreateLooker.ts

# Search for any imports of frameCacheSize in the codebase
rg "import.*frameCacheSize" -g "*.{ts,js,tsx,jsx}"

# Search for direct usage of frameCacheSize
rg "frameCacheSize" -g "*.{ts,js,tsx,jsx}"

Length of output: 179


Script:

#!/bin/bash
# Check if useCreateLooker.ts exists and examine its content
fd "useCreateLooker.ts" --exec cat {}

# Look for any references to frameCacheSize in the git history of useCreateLooker.ts
git log -p app/packages/state/src/hooks/useCreateLooker.ts | grep -A 10 -B 10 "frameCacheSize"

Length of output: 13293

app/packages/looker/src/overlays/base.ts (2)

5-6: LGTM! Clean import modifications.

The addition of sizeBytesEstimate and explicit type imports improves type safety and supports the caching functionality.


68-69: LGTM! Interface extension for size estimation.

The addition of getSizeBytes method to the Overlay interface properly supports the reintroduction of size bytes caching.

app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts (2)

6-6: LGTM: Import changes align with caching requirements.

The addition of sizeBytesEstimate and frame stream size constants supports the reintroduction of size bytes caching as intended.

Also applies to: 8-11


47-50: Consider validating size limits and documenting cache configuration.

While the static configuration is good, consider:

  1. Adding runtime validation to ensure MAX_FRAME_STREAM_SIZE_BYTES is sufficient for the maximum number of frames
  2. Documenting the cache configuration parameters for future maintenance

Let's verify the constants are properly defined:

app/packages/looker/src/lookers/frame-reader.ts (3)

1-13: LGTM: Improved imports with size management capabilities.

The addition of sizeBytesEstimate and size-related constants enhances the frame stream size management, providing fixed boundaries for better resource control.


146-146: Verify thread safety in frame handling.

While the cache initialization is cleaner now, please ensure thread safety when handling frames between the worker and main thread. Consider:

  1. Race conditions between frame updates and cache operations
  2. Potential issues during rapid frame seeking

Let's check for synchronization mechanisms:

#!/bin/bash
# Look for worker message handling patterns
ast-grep --pattern 'worker.postMessage({ $$$method: $_, $$$})'

# Check frame handling patterns
ast-grep --pattern 'frameCache.set($_, $_)'

53-60: Consider monitoring cache performance metrics.

The cache configuration looks solid with proper size limits and eviction strategy. However, since this is a significant change in caching behavior:

  1. Consider adding telemetry to monitor:
    • Cache hit/miss rates
    • Eviction frequency
    • Memory usage patterns
  2. Verify if MAX_FRAME_STREAM_SIZE_BYTES (1e9) is optimal for your use case

Let's verify the constant usage:

✅ Verification successful

Cache configuration is consistently applied across the codebase

The constants MAX_FRAME_STREAM_SIZE (5100) and MAX_FRAME_STREAM_SIZE_BYTES (1e9) are properly defined in constants.ts and consistently used in both frame-reader and ima-vid-frame-samples caches. The configuration is well-aligned across different cache implementations, with proper size limits and eviction strategies. The original review comment's suggestion for monitoring remains valid but there are no inconsistencies in the constant usage.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other uses of these constants to ensure consistent limits
rg "MAX_FRAME_STREAM_SIZE" --type ts
rg "MAX_FRAME_STREAM_SIZE_BYTES" --type ts

Length of output: 222


Script:

#!/bin/bash
# Let's search for the constant definitions and their usage
rg "MAX_FRAME_STREAM_SIZE" -A 2 --type ts
rg "MAX_FRAME_STREAM_SIZE_BYTES" -A 2 --type ts

# Also search for any cache-related configuration
ast-grep --pattern 'const $_ = new LRUCache<$_, $_>({$$$})'

Length of output: 4397

app/packages/core/src/components/Grid/Grid.tsx (2)

Line range hint 119-157: Well-implemented effect handling and cleanup

The implementation shows good practices:

  • Proper cleanup of video resources
  • Debounced resize handling
  • Clear separation of layout and regular effects

30-30: Verify impact of removed caching mechanism

The removal of caching from useRefreshers could affect grid performance, especially with the PR's goal of reintroducing size bytes caching. Please ensure this change aligns with the intended caching behavior.

app/packages/looker/src/lookers/imavid/controller.ts (1)

176-176: Verify the fixed cache size implementation.

The removal of maxFrameStreamSize parameter suggests a transition to fixed-size caching. While this aligns with the PR objective of "setting a fixed size of 500 lookers for the grid", we should ensure proper memory management.

Let's verify the new caching implementation:

✅ Verification successful

Let me gather more information about the fixed cache size implementation.


Let me check one final piece to see how the LRUCache is initialized in ImaVidFrameSamples.


Fixed cache size implementation is properly handled

The removal of maxFrameStreamSize parameter is correct as the caching is now managed through global constants:

  • MAX_FRAME_STREAM_SIZE = 5100 for the maximum number of frames
  • MAX_FRAME_STREAM_SIZE_BYTES = 1e9 for the maximum cache size in bytes

These constants are properly utilized in the frame reader's LRU cache implementation, ensuring consistent memory management across the application.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for the new fixed cache size constant and its usage

# Test 1: Find the new cache size constant
echo "Searching for cache size constant..."
rg -l "MAX_FRAME_STREAM_SIZE" app/packages/looker/src/

# Test 2: Check if the constant is properly used in ImaVidFrameSamples
echo "Checking ImaVidFrameSamples implementation..."
rg -A 10 "class ImaVidFrameSamples" app/packages/looker/src/

Length of output: 1540


Script:

#!/bin/bash
# Check the constants file and its usage
echo "Checking constants.ts content..."
cat app/packages/looker/src/constants.ts

echo -e "\nChecking LRUCache initialization in ImaVidFrameSamples..."
rg -A 5 "samples: LRUCache.*=.*new LRUCache" app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts

echo -e "\nChecking MAX_FRAME_STREAM_SIZE usage in frame-reader..."
rg -B 2 -A 2 "MAX_FRAME_STREAM_SIZE" app/packages/looker/src/lookers/frame-reader.ts

Length of output: 2052


Script:

#!/bin/bash
# Check the complete ImaVidFrameSamples constructor implementation
echo "Checking ImaVidFrameSamples constructor..."
rg -B 5 -A 15 "constructor.*BufferManager" app/packages/looker/src/lookers/imavid/ima-vid-frame-samples.ts

Length of output: 985

app/packages/state/src/hooks/useCreateLooker.ts (2)

24-25: LGTM: Import statements are properly optimized.

The removal of unused Recoil imports and addition of necessary ones maintains clean dependency management.

Also applies to: 29-29


253-253: Verify frame stream caching behavior after removing maxFrameStreamSize.

The removal of maxFrameStreamSize from the Looker configuration seems to contradict the PR objective of "reintroducing size bytes caching for frame data streams". This could potentially lead to unbounded memory usage.

Let's verify the frame stream caching implementation:

app/packages/looker/src/overlays/classifications.ts (1)

10-10: LGTM: Import addition follows best practices

The sizeBytesEstimate import is appropriately placed and follows the established import grouping pattern.

app/packages/utilities/src/index.ts (1)

14-14: LGTM: Addition of sizeBytesEstimate export.

The addition of sizeBytesEstimate export aligns with the PR objectives to reintroduce size bytes caching for frame data streams. The implementation follows good practices by:

  • Using a dedicated module for the implementation
  • Following the alphabetical order of exports
  • Using proper TypeScript syntax

@@ -357,86 +355,6 @@ const ShowModalNav = () => {
);
};

const Caching = ({ modal }: { modal?: boolean }) => {
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Added by #5022. After discussion, we decided to remove


type SizerTypes = SizeTypes | Array<SizeTypes>;

const sizer = (object: SizerTypes) => {
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Cleaner implementation of what currently exists

type SizerTypes = SizeTypes | Array<SizeTypes>;

const sizer = (object: SizerTypes) => {
if (object !== null && object !== undefined) {
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I am confused by this logic. Why are we returning 1 if the object is defined? Also I thought you could just

if (object) {
 //do whatever
}

to determine if it's not null or undefined

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Woops! Thank you

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Actionable comments posted: 2

🧹 Outside diff range and nitpick comments (3)
app/packages/utilities/src/size-bytes-estimate.test.ts (1)

5-37: Consider adding test cases for important edge cases.

While the current test suite covers basic cases, consider adding tests for:

  • Empty arrays and objects
  • Large strings/arrays to verify performance characteristics
  • Nested objects
  • Circular references
  • Mixed nested structures

This would ensure the size estimation remains accurate in all scenarios.

Example additional test cases:

test("empty array returns 0", () => {
  expect(sizeBytesEstimate([])).toBe(0);
});

test("empty object returns 0", () => {
  expect(sizeBytesEstimate({})).toBe(0);
});

test("nested objects are calculated correctly", () => {
  expect(sizeBytesEstimate({ a: { b: "test" } })).toBe(10); // Adjust expected value
});

test("handles circular references gracefully", () => {
  const circular = { a: 1 };
  circular.self = circular;
  expect(() => sizeBytesEstimate(circular)).not.toThrow();
});
app/packages/utilities/src/size-bytes-estimate.ts (2)

1-14: Consider using Map for better performance and built-in functionality

The cache implementation could benefit from using Map instead of a plain object for better performance with non-string keys and built-in functionality.

-const OBJECT_CLASS_CACHE = {};
+const OBJECT_CLASS_CACHE = new Map<string, string>();

 const objectClass = (object: object) => {
   const prototype = Object.prototype.toString.call(object);
-  if (!OBJECT_CLASS_CACHE[prototype]) {
-    OBJECT_CLASS_CACHE[prototype] = prototype.slice(8, -1);
+  if (!OBJECT_CLASS_CACHE.has(prototype)) {
+    OBJECT_CLASS_CACHE.set(prototype, prototype.slice(8, -1));
   }
-  return OBJECT_CLASS_CACHE[prototype];
+  return OBJECT_CLASS_CACHE.get(prototype);
 };

20-65: Document size assumptions and limitations

The function makes specific assumptions about data type sizes (e.g., 8 bytes for numbers and booleans, 2 bytes per character for strings). These assumptions should be documented in JSDoc format for better maintainability.

+/**
+ * Estimates the size of a value in bytes.
+ * Assumptions:
+ * - Numbers and booleans: 8 bytes
+ * - Strings: 2 bytes per character (UTF-16)
+ * - Objects: Sum of key and value sizes
+ * - Arrays: Sum of element sizes
+ * - ArrayBuffer: Actual byte length
+ * - null/undefined: 1 byte
+ * @param object The value to measure
+ * @returns Estimated size in bytes
+ */
 const sizer = (object: SizerTypes) => {
📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 2a38642 and 7a00762.

📒 Files selected for processing (2)
  • app/packages/utilities/src/size-bytes-estimate.test.ts (1 hunks)
  • app/packages/utilities/src/size-bytes-estimate.ts (1 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
app/packages/utilities/src/size-bytes-estimate.test.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

app/packages/utilities/src/size-bytes-estimate.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

🔇 Additional comments (4)
app/packages/utilities/src/size-bytes-estimate.test.ts (2)

1-2: LGTM! Clean and focused imports.

The imports are well-organized, importing only the necessary testing utilities and the function under test.


4-4: LGTM! Well-structured test suite.

The test suite follows best practices with a descriptive describe block that clearly indicates its purpose.

app/packages/utilities/src/size-bytes-estimate.ts (2)

16-18: LGTM! Well-defined type definitions

The type definitions are clear, comprehensive, and provide good type safety.


67-69: LGTM! Clean and well-typed export

The exported function provides a clean interface to the sizer functionality.

Comment on lines 5 to 37
test("Array values are summed", async () => {
expect(sizeBytesEstimate([1, "2"])).toBe(10);
});

test("ArrayBuffer returns byteLength", async () => {
const buffer = new ArrayBuffer(8);
expect(sizeBytesEstimate(buffer)).toBe(buffer.byteLength);
});

test("boolean returns 8", async () => {
expect(sizeBytesEstimate(false)).toBe(8);
});

test("null and undefined return 1", async () => {
expect(sizeBytesEstimate(null)).toBe(1);
expect(sizeBytesEstimate(undefined)).toBe(1);
});

test("number returns 8", async () => {
expect(sizeBytesEstimate(1)).toBe(8);
});

test("objects entries are summed", async () => {
expect(sizeBytesEstimate({ "1": 1 })).toBe(10);
});

test("string returns chars*2", async () => {
expect(sizeBytesEstimate("chars")).toBe(10);
});

test("non-objects return 0", async () => {
expect(sizeBytesEstimate(() => null)).toBe(0);
});
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🛠️ Refactor suggestion

Remove unnecessary async markers from synchronous tests.

The test cases are marked as async but don't contain any asynchronous operations. Remove the async markers to improve clarity.

- test("Array values are summed", async () => {
+ test("Array values are summed", () => {

- test("ArrayBuffer returns byteLength", async () => {
+ test("ArrayBuffer returns byteLength", () => {

- test("boolean returns 8", async () => {
+ test("boolean returns 8", () => {

- test("null and undefined return 1", async () => {
+ test("null and undefined return 1", () => {

- test("number returns 8", async () => {
+ test("number returns 8", () => {

- test("objects entries are summed", async () => {
+ test("objects entries are summed", () => {

- test("string returns chars*2", async () => {
+ test("string returns chars*2", () => {

- test("non-objects return 0", async () => {
+ test("non-objects return 0", () => {
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
test("Array values are summed", async () => {
expect(sizeBytesEstimate([1, "2"])).toBe(10);
});
test("ArrayBuffer returns byteLength", async () => {
const buffer = new ArrayBuffer(8);
expect(sizeBytesEstimate(buffer)).toBe(buffer.byteLength);
});
test("boolean returns 8", async () => {
expect(sizeBytesEstimate(false)).toBe(8);
});
test("null and undefined return 1", async () => {
expect(sizeBytesEstimate(null)).toBe(1);
expect(sizeBytesEstimate(undefined)).toBe(1);
});
test("number returns 8", async () => {
expect(sizeBytesEstimate(1)).toBe(8);
});
test("objects entries are summed", async () => {
expect(sizeBytesEstimate({ "1": 1 })).toBe(10);
});
test("string returns chars*2", async () => {
expect(sizeBytesEstimate("chars")).toBe(10);
});
test("non-objects return 0", async () => {
expect(sizeBytesEstimate(() => null)).toBe(0);
});
test("Array values are summed", () => {
expect(sizeBytesEstimate([1, "2"])).toBe(10);
});
test("ArrayBuffer returns byteLength", () => {
const buffer = new ArrayBuffer(8);
expect(sizeBytesEstimate(buffer)).toBe(buffer.byteLength);
});
test("boolean returns 8", () => {
expect(sizeBytesEstimate(false)).toBe(8);
});
test("null and undefined return 1", () => {
expect(sizeBytesEstimate(null)).toBe(1);
expect(sizeBytesEstimate(undefined)).toBe(1);
});
test("number returns 8", () => {
expect(sizeBytesEstimate(1)).toBe(8);
});
test("objects entries are summed", () => {
expect(sizeBytesEstimate({ "1": 1 })).toBe(10);
});
test("string returns chars*2", () => {
expect(sizeBytesEstimate("chars")).toBe(10);
});
test("non-objects return 0", () => {
expect(sizeBytesEstimate(() => null)).toBe(0);
});

if (!Array.isArray(object)) {
let size = 0;
for (const key in object) {
console.log("KEY", key);
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⚠️ Potential issue

Remove debug console.log statement

Production code should not contain debug console.log statements.

-      console.log("KEY", key);
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
console.log("KEY", key);

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I don't have all the context but seems like a simplification of the implementation which I am always in support of where possible.

@benjaminpkane benjaminpkane merged commit cbd5276 into release/v1.0.2 Nov 7, 2024
11 checks passed
@benjaminpkane benjaminpkane deleted the size-bytes-caching branch November 7, 2024 15:24
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2 participants