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NotesAgentic/backend/app/services/desktop_projection.py
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Python

"""Rebuildable per-Vault FTS projection, sourced only through the Host broker."""
from __future__ import annotations
import asyncio
from app import repository
from app.database.db import connect_knowledge, transaction
from app.knowledge.parser import parse_note
from app.services import desktop_notes
from app.services.coordination import vault_mutation_lock
def entries():
result, offset = [], 0
while True:
page = desktop_notes.call('list', offset=offset, limit=1000)
result.extend(page['items'])
offset += len(page['items'])
if offset >= page['total'] or not page['items']: return result
def _refresh():
current = entries() # Always validates authorization, including when the cache is current.
conn = connect_knowledge()
try:
conn.execute('CREATE TABLE IF NOT EXISTS host_projection (file_id TEXT PRIMARY KEY, hash TEXT NOT NULL, path TEXT NOT NULL)')
old = {row['file_id']: (row['hash'], row['path']) for row in conn.execute('SELECT * FROM host_projection')}
changed = []
for entry in current:
if old.get(entry['file_id']) == (entry['hash'], entry['path']): continue
document = desktop_notes.call('read', file_id=entry['file_id'])
note = desktop_notes.note_from_document(document)
parsed = parse_note(markdown=note.markdown, file_path=note.file_path,
folder=note.file_path.rpartition('/')[0], note_id=note.note_id,
tags=note.tags, created_at=note.created_at, updated_at=note.updated_at)
changed.append((document, parsed))
removed = set(old) - {entry['file_id'] for entry in current}
# Content is verified before starting the projection transaction. No model/network IO inside.
with transaction(conn):
task_links = []
for entry in current:
for alias in entry.get('aliases', []):
if alias in removed:
task_links.extend((entry['file_id'], row['task_id']) for row in conn.execute('SELECT task_id FROM tasks WHERE note_id=?', [alias]))
for file_id in removed:
for block_id in repository.delete_note(file_id, conn=conn):
conn.execute('DELETE FROM vec_blocks WHERE block_id=?', [block_id])
conn.execute('DELETE FROM host_projection WHERE file_id=?', [file_id])
for document, parsed in changed:
old_ids = repository.replace_note_metadata(conn=conn, note_id=parsed.note_id, title=parsed.title,
file_path=parsed.file_path, folder=parsed.folder, tags=parsed.tags, created_at=parsed.created_at,
updated_at=parsed.updated_at, blocks=parsed.blocks)
for block_id in old_ids:
conn.execute('DELETE FROM vec_blocks WHERE block_id=?', [block_id])
conn.execute('UPDATE blocks SET embedding_local_only=? WHERE note_id=?', (int(parsed.embedding_local_only), parsed.note_id))
conn.execute('INSERT OR REPLACE INTO host_projection VALUES (?,?,?)', (parsed.note_id, document['hash'], parsed.file_path))
for file_id, task_id in task_links:
conn.execute('UPDATE tasks SET note_id=? WHERE task_id=? AND note_id IS NULL', [file_id, task_id])
if removed or changed:
repository.set_index_meta({'workspace_vectors_pending': '1'}, conn=conn)
finally:
conn.close()
async def refresh():
async with vault_mutation_lock():
work = asyncio.create_task(asyncio.to_thread(_refresh))
# Keep the projection gate until the worker has finished even if the request is cancelled.
cancelled = False
while not work.done():
try: await asyncio.shield(work)
except asyncio.CancelledError: cancelled = True
work.result()
if cancelled: raise asyncio.CancelledError