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fix: resolve metadata race condition and implement lazy COW initialization

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Critical fixes for v5.0.1:

1. Metadata Race Condition (URGENT FIX):
   - Fixed TypeAwareStorage saving nouns before metadata
   - Reversed order: saveNounMetadata() now happens FIRST
   - Resolves VFS failures and entity lookup errors

2. Lazy COW Initialization:
   - COW now initializes automatically on first fork() call
   - Eliminates initialization deadlock
   - Zero-config fork API - transparent to users

3. Fork Shared Storage:
   - Fork shares parent storage instance for instant forking
   - Enables read access to parent data
   - Write isolation pending (v5.1.0)

Unblocks Workshop team and all VFS users. All core APIs (add, get,
relate, find, VFS) working correctly with TypeAwareStorage.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
David Snelling 2025-11-02 08:06:54 -08:00
parent 12d8ea7efc
commit 5e16f9e5e8
2 changed files with 44 additions and 32 deletions
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48
src/brainy.ts
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@ -177,17 +177,6 @@ export class Brainy<T = any> implements BrainyInterface<T> {
this.storage = await this.setupStorage()
await this.storage.init()
// v5.0.1: COW auto-init DISABLED due to initialization deadlock
// COW is still available but requires manual initialization
// Will be fixed properly in v5.1.0
// if (typeof (this.storage as any).initializeCOW === 'function') {
// const cowOptions = (this.storage as any)._cowOptions || {
// branch: 'main',
// enableCompression: true
// }
// await (this.storage as any).initializeCOW(cowOptions)
// }
// Setup index now that we have storage
this.index = this.setupIndex()
@ -2118,13 +2107,23 @@ export class Brainy<T = any> implements BrainyInterface<T> {
return this.augmentationRegistry.execute('fork', { branch, options }, async () => {
const branchName = branch || `fork-${Date.now()}`
// Check if storage has RefManager (COW enabled)
if (!('refManager' in this.storage)) {
throw new Error(
'Fork requires COW-enabled storage. ' +
'This storage adapter does not support branching. ' +
'Please use v5.0.0+ storage adapters.'
)
// v5.0.1: Lazy COW initialization - enable automatically on first fork()
// This is zero-config and transparent to users
if (!('refManager' in this.storage) || !(this.storage as any).refManager) {
// Storage supports COW but isn't initialized yet - initialize now
if (typeof (this.storage as any).initializeCOW === 'function') {
await (this.storage as any).initializeCOW({
branch: (this.config.storage as any)?.branch || 'main',
enableCompression: true
})
} else {
// Storage adapter doesn't support COW at all
throw new Error(
'Fork requires COW-enabled storage. ' +
'This storage adapter does not support branching. ' +
'Please use v5.0.0+ storage adapters.'
)
}
}
const refManager = (this.storage as any).refManager
@ -2144,10 +2143,15 @@ export class Brainy<T = any> implements BrainyInterface<T> {
const clone = new Brainy<T>(forkConfig)
// Step 3: Create NEW storage instance pointing to fork branch
// This ensures proper data isolation between parent and fork
clone.storage = await clone.setupStorage()
await clone.storage.init()
// Step 3: SHARE parent's storage instance (enables data access)
// Fork shares same underlying storage but with different currentBranch
// This provides instant fork with read access to parent data
clone.storage = this.storage
// Update COW currentBranch to fork branch
if ('currentBranch' in clone.storage) {
(clone.storage as any).currentBranch = branchName
}
// Shallow copy HNSW index (INSTANT - just copies Map references)
clone.index = this.setupIndex()