Phase 5.5-5.9: Plugin-Marketplace, Agent Memory, GraphRAG, Subagents, External Agent API
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5.5 Plugin-Marketplace: - New plugin: marketplace/ (models, routes, services, schemas, config) - MarketplaceListing model (global, no tenant_id) - Ed25519 signature verification via PluginSignature - Endpoints: list, detail, install, verify, categories - Config: MARKETPLACE_SERVER_URL setting 5.6 Agent Memory (persistent): - New plugin: agent_memory/ (models, routes, services, schemas) - AgentMemory model with embedding vector(768) + HNSW index - store_memory() with auto-embedding - retrieve_relevant_memories() with pgvector cosine similarity - Semantic search endpoint 5.7 GraphRAG: - New plugin: graph_rag/ (models, routes, services, provider, schemas) - EntityRelationship model (source/target type+id, relationship_type, metadata) - BFS graph traversal (bidirectional, configurable depth) - GraphRAGSearchProvider registered in unified_search 5.8 Subagents / Multi-Agent: - AgentCoordinator class (create_subtask, wait_for_subtask, aggregate, cancel) - AgentSubtask model + migration 0002_agent_subtasks.sql - 6 new API endpoints for subtask management - Tools registered in AI tool registry 5.9 External Agent API: - external_api.py: POST /run, GET /status, POST /stream (SSE) - Bearer API token authentication - Rate limiting: 10 req/min per token - ExternalAgentRequest/Response schemas 3 new plugins registered in main.py and __init__.py All files py_compile clean
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"""GraphRAGSearchProvider — registers GraphRAG as a search provider in unified_search."""
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from __future__ import annotations
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import logging
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import uuid
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from typing import Any
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from sqlalchemy import text
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.plugins.builtins.unified_search.base_provider import BaseSearchProvider
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logger = logging.getLogger(__name__)
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class GraphRAGSearchProvider(BaseSearchProvider):
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"""Search provider for GraphRAG entity relationships.
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Enables full-text and semantic search over relationship metadata
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and entity types in the knowledge graph.
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"""
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entity_type = "graph_relationship"
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async def _search_fts_filtered(
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self,
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db: AsyncSession,
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tsquery: str,
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tenant_id: uuid.UUID,
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limit: int,
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visible_ids: set[uuid.UUID] | None,
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) -> list[dict[str, Any]]:
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"""Full-text search on relationship metadata and types."""
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if visible_ids is not None:
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sql = text(
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"""
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SELECT r.*, ts_rank(
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to_tsvector('pg_catalog.german',
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coalesce(r.relationship_type, '') || ' ' ||
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coalesce(r.source_type, '') || ' ' ||
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coalesce(r.target_type, '') || ' ' ||
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coalesce(r.metadata::text, '')
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),
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to_tsquery('pg_catalog.german', :q)
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) AS rank
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FROM entity_relationships r
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WHERE r.tenant_id = :tid
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AND r.deleted_at IS NULL
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AND to_tsvector('pg_catalog.german',
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coalesce(r.relationship_type, '') || ' ' ||
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coalesce(r.source_type, '') || ' ' ||
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coalesce(r.target_type, '') || ' ' ||
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coalesce(r.metadata::text, '')
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) @@ to_tsquery('pg_catalog.german', :q)
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AND r.id = ANY(:visible_ids)
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ORDER BY rank DESC
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LIMIT :lim
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"""
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)
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result = await db.execute(
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sql,
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{
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"q": tsquery,
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"tid": tenant_id,
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"lim": limit,
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"visible_ids": list(visible_ids),
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},
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)
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else:
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sql = text(
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"""
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SELECT r.*, ts_rank(
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to_tsvector('pg_catalog.german',
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coalesce(r.relationship_type, '') || ' ' ||
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coalesce(r.source_type, '') || ' ' ||
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coalesce(r.target_type, '') || ' ' ||
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coalesce(r.metadata::text, '')
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),
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to_tsquery('pg_catalog.german', :q)
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) AS rank
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FROM entity_relationships r
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WHERE r.tenant_id = :tid
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AND r.deleted_at IS NULL
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AND to_tsvector('pg_catalog.german',
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coalesce(r.relationship_type, '') || ' ' ||
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coalesce(r.source_type, '') || ' ' ||
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coalesce(r.target_type, '') || ' ' ||
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coalesce(r.metadata::text, '')
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) @@ to_tsquery('pg_catalog.german', :q)
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ORDER BY rank DESC
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LIMIT :lim
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"""
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)
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result = await db.execute(
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sql,
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{"q": tsquery, "tid": tenant_id, "lim": limit},
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)
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rows = result.mappings().all()
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return [dict(r) for r in rows]
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async def _search_vector_filtered(
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self,
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db: AsyncSession,
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embedding: list[float],
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tenant_id: uuid.UUID,
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limit: int,
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visible_ids: set[uuid.UUID] | None,
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) -> list[dict[str, Any]]:
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"""Semantic search is not yet supported for graph relationships.
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Returns empty list — relationships are searched via FTS on metadata.
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"""
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return []
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async def get_embedding_text(
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self, db: AsyncSession, entity_id: uuid.UUID, tenant_id: uuid.UUID
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) -> str:
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"""Get text for embedding generation."""
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sql = text(
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"""
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SELECT relationship_type, source_type, source_id, target_type, target_id, metadata
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FROM entity_relationships
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WHERE id = :eid AND tenant_id = :tid
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"""
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)
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result = await db.execute(sql, {"eid": entity_id, "tid": tenant_id})
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row = result.mappings().first()
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if not row:
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return ""
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parts = [
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row.get("relationship_type", ""),
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row.get("source_type", ""),
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str(row.get("source_id", "")),
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row.get("target_type", ""),
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str(row.get("target_id", "")),
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str(row.get("metadata", {})),
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]
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return " ".join(str(p) for p in parts if p)
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def to_search_result(self, entity: object) -> dict[str, Any]:
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"""Convert relationship to search result dict."""
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if isinstance(entity, dict):
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return {
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"entity_type": self.entity_type,
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"entity_id": str(entity.get("id", "")),
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"title": f"{entity.get('source_type', '?')} --[{entity.get('relationship_type', '?')}]--> {entity.get('target_type', '?')}",
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"snippet": str(entity.get("metadata", {})),
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"score": float(entity.get("rank", 0.0)),
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"data": {
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"source_type": entity.get("source_type"),
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"source_id": str(entity.get("source_id", "")),
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"target_type": entity.get("target_type"),
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"target_id": str(entity.get("target_id", "")),
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"relationship_type": entity.get("relationship_type"),
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},
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}
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return {
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"entity_type": self.entity_type,
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"entity_id": str(getattr(entity, "id", "")),
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"title": f"{getattr(entity, 'source_type', '?')} --[{getattr(entity, 'relationship_type', '?')}]--> {getattr(entity, 'target_type', '?')}",
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"snippet": str(getattr(entity, "metadata", {})),
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"score": 0.0,
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"data": {},
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}
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