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Revert to v2.18.10 - Remove session persistence (v2.19.0-v2.19.5) (#322)

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After 5 consecutive hotfix attempts, session persistence has proven
architecturally incompatible with the MCP SDK. Rolling back to last
known stable version.

## Removed
- 16 new files (session types, docs, tests, planning docs)
- 1,100+ lines of session persistence code
- Session restoration hooks and lifecycle events
- Retry policy and warm-start implementations

## Restored
- Stable v2.18.10 codebase
- Library export fields (from PR #310)
- All core MCP functionality

## Breaking Changes
- Session persistence APIs removed
- onSessionNotFound hook removed
- Session lifecycle events removed

This reverts commits fe13091 through 1d34ad8.
Restores commit 4566253 (v2.18.10, PR #310).

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

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Romuald Członkowski
2025-10-14 10:13:43 +02:00
committed by GitHub
parent fe1309151a
commit 8d20c64f5c
25 changed files with 97 additions and 13086 deletions
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35
src/mcp/server.ts
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@@ -267,13 +267,6 @@ export class N8NDocumentationMCPServer {
private dbHealthChecked: boolean = false;
private async validateDatabaseHealth(): Promise<void> {
// CRITICAL: Skip all database validation in test mode
// This allows session lifecycle tests to use empty :memory: databases
if (process.env.NODE_ENV === 'test') {
logger.debug('Skipping database validation in test mode');
return;
}
if (!this.db) return;
try {
@@ -285,26 +278,18 @@ export class N8NDocumentationMCPServer {
throw new Error('Database is empty. Run "npm run rebuild" to populate node data.');
}
// Check FTS5 support before attempting FTS5 queries
// sql.js doesn't support FTS5, so we need to skip FTS5 validation for sql.js databases
const hasFTS5 = this.db.checkFTS5Support();
// Check if FTS5 table exists
const ftsExists = this.db.prepare(`
SELECT name FROM sqlite_master
WHERE type='table' AND name='nodes_fts'
`).get();
if (!hasFTS5) {
logger.warn('FTS5 not supported (likely using sql.js) - search will use basic queries');
if (!ftsExists) {
logger.warn('FTS5 table missing - search performance will be degraded. Please run: npm run rebuild');
} else {
// Only check FTS5 table if FTS5 is supported
const ftsExists = this.db.prepare(`
SELECT name FROM sqlite_master
WHERE type='table' AND name='nodes_fts'
`).get();
if (!ftsExists) {
logger.warn('FTS5 table missing - search performance will be degraded. Please run: npm run rebuild');
} else {
const ftsCount = this.db.prepare('SELECT COUNT(*) as count FROM nodes_fts').get() as { count: number };
if (ftsCount.count === 0) {
logger.warn('FTS5 index is empty - search will not work properly. Please run: npm run rebuild');
}
const ftsCount = this.db.prepare('SELECT COUNT(*) as count FROM nodes_fts').get() as { count: number };
if (ftsCount.count === 0) {
logger.warn('FTS5 index is empty - search will not work properly. Please run: npm run rebuild');
}
}