feat(spaces): implement Phase 3 Persistent Transclusion Context
Implements persistent transclusion context for Information Spaces: - ScopedVariables: Variable scope layers (request > document > space) - SpaceTransclusionContext: Extends TransclusionContext with DB persistence - CrossSpaceResolver: Resolve references across space boundaries - ReferenceGraph: Track document dependencies for cache invalidation - PersistentReferenceGraph: Repository-backed reference tracking - RenderCache: Cache rendered output with invalidation support - CacheInvalidator: Event-driven cache invalidation using reference graph Key features: - Variable precedence: request overrides document overrides space - Reference tracking during transclusion processing - Transitive dependent calculation for cache invalidation - Event bus integration for automatic invalidation on content changes 47 unit tests covering all components. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
@@ -6,7 +6,40 @@ This package extends the existing TransclusionContext with:
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- Cross-space reference resolution
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- Reference graph for dependency tracking
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- Variable scope layers (space, document, request)
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- Event-driven cache invalidation
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"""
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# Transclusion extensions will be implemented in Phase 3
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__all__ = []
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from .persistent_context import (
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SpaceTransclusionContext,
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ScopedVariables,
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VariableScope,
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CrossSpaceResolver,
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)
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from .reference_graph import (
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ReferenceGraph,
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PersistentReferenceGraph,
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DependencyNode,
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)
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from .cache_invalidation import (
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RenderCache,
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CacheEntry,
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CacheInvalidator,
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create_invalidation_handler,
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)
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__all__ = [
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# Persistent context
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"SpaceTransclusionContext",
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"ScopedVariables",
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"VariableScope",
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"CrossSpaceResolver",
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# Reference graph
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"ReferenceGraph",
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"PersistentReferenceGraph",
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"DependencyNode",
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# Cache invalidation
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"RenderCache",
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"CacheEntry",
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"CacheInvalidator",
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"create_invalidation_handler",
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]
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397
markitect/spaces/transclusion/cache_invalidation.py
Normal file
397
markitect/spaces/transclusion/cache_invalidation.py
Normal file
@@ -0,0 +1,397 @@
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"""
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Cache invalidation for Information Spaces.
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This module provides event-driven cache invalidation that uses
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the reference graph to determine which documents need to be
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re-rendered when content changes.
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"""
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from typing import Set, List, Dict, Any, Optional, Callable
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from dataclasses import dataclass, field
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import logging
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from ..events import (
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EventBus,
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SpaceEvent,
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SpaceEventType,
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cache_invalidated_event,
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)
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from .reference_graph import ReferenceGraph, PersistentReferenceGraph
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logger = logging.getLogger(__name__)
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@dataclass
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class CacheEntry:
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"""
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Represents a cached rendering result.
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Attributes:
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document_id: The document ID
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space_id: The space ID
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content_hash: Hash of source content when rendered
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rendered_content: The rendered output
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dependencies: Document IDs this rendering depends on
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"""
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document_id: str
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space_id: str
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content_hash: str
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rendered_content: Any
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dependencies: Set[str] = field(default_factory=set)
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class RenderCache:
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"""
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Cache for rendered document content.
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Stores rendered output keyed by document ID, with automatic
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invalidation based on content changes and dependencies.
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"""
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def __init__(self):
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"""Initialize an empty cache."""
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self._cache: Dict[str, CacheEntry] = {}
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self._by_space: Dict[str, Set[str]] = {}
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def get(self, document_id: str) -> Optional[CacheEntry]:
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"""
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Get a cache entry.
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Args:
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document_id: The document ID
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Returns:
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CacheEntry if found, None otherwise
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"""
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return self._cache.get(document_id)
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def put(
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self,
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document_id: str,
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space_id: str,
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content_hash: str,
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rendered_content: Any,
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dependencies: Optional[Set[str]] = None,
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) -> CacheEntry:
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"""
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Store a cache entry.
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Args:
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document_id: The document ID
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space_id: The space ID
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content_hash: Source content hash
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rendered_content: Rendered output
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dependencies: Document IDs this depends on
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Returns:
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The created CacheEntry
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"""
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entry = CacheEntry(
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document_id=document_id,
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space_id=space_id,
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content_hash=content_hash,
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rendered_content=rendered_content,
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dependencies=dependencies or set(),
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)
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self._cache[document_id] = entry
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if space_id not in self._by_space:
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self._by_space[space_id] = set()
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self._by_space[space_id].add(document_id)
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return entry
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def invalidate(self, document_id: str) -> bool:
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"""
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Invalidate a single cache entry.
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Args:
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document_id: The document ID
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Returns:
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True if entry was invalidated, False if not found
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"""
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if document_id not in self._cache:
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return False
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entry = self._cache.pop(document_id)
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if entry.space_id in self._by_space:
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self._by_space[entry.space_id].discard(document_id)
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return True
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def invalidate_many(self, document_ids: Set[str]) -> int:
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"""
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Invalidate multiple cache entries.
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Args:
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document_ids: Set of document IDs to invalidate
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Returns:
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Number of entries invalidated
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"""
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count = 0
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for doc_id in document_ids:
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if self.invalidate(doc_id):
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count += 1
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return count
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def invalidate_space(self, space_id: str) -> int:
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"""
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Invalidate all entries for a space.
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Args:
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space_id: The space ID
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Returns:
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Number of entries invalidated
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"""
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doc_ids = self._by_space.pop(space_id, set())
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count = 0
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for doc_id in doc_ids:
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if doc_id in self._cache:
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del self._cache[doc_id]
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count += 1
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return count
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def is_valid(self, document_id: str, content_hash: str) -> bool:
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"""
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Check if a cache entry is still valid.
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Args:
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document_id: The document ID
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content_hash: Current content hash
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Returns:
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True if cache entry exists and matches hash
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"""
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entry = self._cache.get(document_id)
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return entry is not None and entry.content_hash == content_hash
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def get_cached_documents(self, space_id: str) -> Set[str]:
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"""
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Get all cached document IDs for a space.
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Args:
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space_id: The space ID
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Returns:
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Set of cached document IDs
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"""
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return self._by_space.get(space_id, set()).copy()
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def clear(self) -> int:
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"""
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Clear all cache entries.
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Returns:
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Number of entries cleared
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"""
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count = len(self._cache)
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self._cache.clear()
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self._by_space.clear()
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return count
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class CacheInvalidator:
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"""
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Event-driven cache invalidation coordinator.
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Listens to document change events and uses the reference graph
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to invalidate affected cache entries.
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"""
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def __init__(
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self,
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cache: RenderCache,
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reference_graph: ReferenceGraph,
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event_bus: Optional[EventBus] = None,
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transitive: bool = True,
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):
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"""
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Initialize the cache invalidator.
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Args:
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cache: The render cache to invalidate
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reference_graph: Reference graph for dependency tracking
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event_bus: Event bus for subscribing to changes
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transitive: Whether to invalidate transitive dependents
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"""
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self._cache = cache
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self._reference_graph = reference_graph
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self._event_bus = event_bus
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self._transitive = transitive
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self._handler_ids: List[str] = []
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if event_bus:
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self._subscribe_to_events()
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def _subscribe_to_events(self) -> None:
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"""Subscribe to relevant events."""
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if not self._event_bus:
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return
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# Document content changes trigger invalidation
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handler_id = self._event_bus.subscribe(
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SpaceEventType.DOCUMENT_CONTENT_CHANGED,
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self._on_content_changed,
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)
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self._handler_ids.append(handler_id)
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# Document removal invalidates
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handler_id = self._event_bus.subscribe(
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SpaceEventType.DOCUMENT_REMOVED,
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self._on_document_removed,
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)
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self._handler_ids.append(handler_id)
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# Space deletion invalidates all
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handler_id = self._event_bus.subscribe(
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SpaceEventType.SPACE_DELETED,
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self._on_space_deleted,
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)
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self._handler_ids.append(handler_id)
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def unsubscribe(self) -> None:
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"""Unsubscribe from all events."""
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if not self._event_bus:
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return
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for handler_id in self._handler_ids:
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self._event_bus.unsubscribe_by_id(handler_id)
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self._handler_ids.clear()
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def _on_content_changed(self, event: SpaceEvent) -> None:
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"""Handle document content change event."""
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document_id = event.payload.get("document_id")
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if not document_id:
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return
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invalidated = self.invalidate_for_document(document_id, event.space_id)
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logger.debug(
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f"Content changed for {document_id}, invalidated {len(invalidated)} documents"
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)
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def _on_document_removed(self, event: SpaceEvent) -> None:
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"""Handle document removal event."""
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document_id = event.payload.get("document_id")
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if not document_id:
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return
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# Invalidate this document and dependents
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invalidated = self.invalidate_for_document(document_id, event.space_id)
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# Remove from reference graph
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self._reference_graph.remove_document(document_id)
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logger.debug(
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f"Document {document_id} removed, invalidated {len(invalidated)} documents"
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)
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def _on_space_deleted(self, event: SpaceEvent) -> None:
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"""Handle space deletion event."""
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space_id = event.space_id
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# Invalidate all cached documents in space
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count = self._cache.invalidate_space(space_id)
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# Clear reference graph
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self._reference_graph.clear_space(space_id)
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logger.debug(f"Space {space_id} deleted, invalidated {count} documents")
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def invalidate_for_document(
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self,
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document_id: str,
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space_id: str,
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) -> Set[str]:
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"""
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Invalidate cache for a document and its dependents.
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Args:
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document_id: The changed document
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space_id: The space ID
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Returns:
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Set of invalidated document IDs
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"""
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to_invalidate = {document_id}
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# Get dependents (documents that include this one)
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if self._transitive:
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dependents = self._reference_graph.get_transitive_dependents(document_id)
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else:
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dependents = self._reference_graph.get_dependents(document_id)
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to_invalidate.update(dependents)
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# Invalidate cache entries
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self._cache.invalidate_many(to_invalidate)
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# Emit cache invalidation event if we have event bus
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if self._event_bus and to_invalidate:
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event = cache_invalidated_event(
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space_id=space_id,
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document_ids=list(to_invalidate),
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reason="content_changed",
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)
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self._event_bus.emit(event)
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return to_invalidate
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def invalidate_all(self, space_id: str) -> int:
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"""
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Invalidate all cache entries for a space.
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Args:
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space_id: The space ID
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Returns:
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Number of entries invalidated
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"""
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cached_docs = self._cache.get_cached_documents(space_id)
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count = self._cache.invalidate_space(space_id)
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if self._event_bus and count > 0:
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event = cache_invalidated_event(
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space_id=space_id,
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document_ids=list(cached_docs),
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reason="full_invalidation",
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)
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self._event_bus.emit(event)
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return count
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def create_invalidation_handler(
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cache: RenderCache,
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reference_graph: ReferenceGraph,
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) -> Callable[[SpaceEvent], None]:
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"""
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Create a standalone event handler for cache invalidation.
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Useful when you want to add invalidation without the full CacheInvalidator.
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Args:
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cache: The render cache
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reference_graph: The reference graph
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Returns:
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Event handler function
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"""
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def handler(event: SpaceEvent) -> None:
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document_id = event.payload.get("document_id")
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if not document_id:
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return
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# Get dependents and invalidate
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to_invalidate = {document_id}
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to_invalidate.update(
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reference_graph.get_transitive_dependents(document_id)
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)
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cache.invalidate_many(to_invalidate)
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return handler
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369
markitect/spaces/transclusion/persistent_context.py
Normal file
369
markitect/spaces/transclusion/persistent_context.py
Normal file
@@ -0,0 +1,369 @@
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"""
|
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Persistent transclusion context for Information Spaces.
|
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|
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This module extends the core TransclusionContext with database-backed
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variable storage and space integration.
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"""
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from pathlib import Path
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from typing import Dict, Any, Optional, List, Set
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from dataclasses import dataclass, field
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from markitect.packaging.transclusion.context import TransclusionContext
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from ..models import SpaceVariable
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from ..repositories.interfaces import IVariableRepository
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class VariableScope:
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"""Defines variable scope levels in order of precedence (highest first)."""
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REQUEST = "request" # Temporary, per-request variables
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DOCUMENT = "document" # Document-level variables
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SPACE = "space" # Space-level variables (persisted)
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@dataclass
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class ScopedVariables:
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"""
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Manages variables across multiple scope layers.
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Variables are resolved in order: request > document > space
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This allows local overrides of space-level defaults.
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"""
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space_vars: Dict[str, Any] = field(default_factory=dict)
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document_vars: Dict[str, Any] = field(default_factory=dict)
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request_vars: Dict[str, Any] = field(default_factory=dict)
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def get(self, name: str, default: Any = None) -> Any:
|
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"""
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Get a variable, checking scopes in order of precedence.
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Args:
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name: Variable name
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default: Default if not found in any scope
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Returns:
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Variable value from highest precedence scope, or default
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"""
|
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if name in self.request_vars:
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return self.request_vars[name]
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if name in self.document_vars:
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return self.document_vars[name]
|
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if name in self.space_vars:
|
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return self.space_vars[name]
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return default
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|
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def set(self, name: str, value: Any, scope: str = VariableScope.REQUEST) -> None:
|
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"""
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Set a variable in the specified scope.
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Args:
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name: Variable name
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value: Variable value
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||||
scope: Target scope (request, document, or space)
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"""
|
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if scope == VariableScope.REQUEST:
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self.request_vars[name] = value
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elif scope == VariableScope.DOCUMENT:
|
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self.document_vars[name] = value
|
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elif scope == VariableScope.SPACE:
|
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self.space_vars[name] = value
|
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|
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def get_all(self) -> Dict[str, Any]:
|
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"""
|
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Get all variables merged with proper precedence.
|
||||
|
||||
Returns:
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Dictionary with all variables, higher scopes overriding lower
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"""
|
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merged = {}
|
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merged.update(self.space_vars)
|
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merged.update(self.document_vars)
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merged.update(self.request_vars)
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return merged
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|
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def clear_scope(self, scope: str) -> None:
|
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"""Clear all variables in a scope."""
|
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if scope == VariableScope.REQUEST:
|
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self.request_vars.clear()
|
||||
elif scope == VariableScope.DOCUMENT:
|
||||
self.document_vars.clear()
|
||||
elif scope == VariableScope.SPACE:
|
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self.space_vars.clear()
|
||||
|
||||
|
||||
class SpaceTransclusionContext(TransclusionContext):
|
||||
"""
|
||||
Transclusion context integrated with Information Spaces.
|
||||
|
||||
Extends the base TransclusionContext with:
|
||||
- Space-aware variable resolution with scope layers
|
||||
- Reference tracking for cache invalidation
|
||||
- Optional persistence of space-level variables
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
space_id: str,
|
||||
base_path: Optional[Path] = None,
|
||||
variables: Optional[Dict[str, Any]] = None,
|
||||
max_depth: int = 10,
|
||||
variable_repo: Optional[IVariableRepository] = None,
|
||||
):
|
||||
"""
|
||||
Initialize a space-aware transclusion context.
|
||||
|
||||
Args:
|
||||
space_id: The space ID this context belongs to
|
||||
base_path: Base path for relative file resolution
|
||||
variables: Initial request-level variables
|
||||
max_depth: Maximum inclusion depth
|
||||
variable_repo: Optional repository for persisting space variables
|
||||
"""
|
||||
# Initialize scoped vars BEFORE super().__init__() because
|
||||
# the base class sets self.variables which triggers our property setter
|
||||
self._scoped_vars = ScopedVariables()
|
||||
self.space_id = space_id
|
||||
self._variable_repo = variable_repo
|
||||
|
||||
# Track references during processing
|
||||
self._current_document_id: Optional[str] = None
|
||||
self._references: List[tuple] = [] # (source_doc_id, target_doc_id)
|
||||
|
||||
# Now call parent init (which may set variables via property)
|
||||
super().__init__(base_path=base_path, variables={}, max_depth=max_depth)
|
||||
|
||||
# Load space variables from repository if available
|
||||
if variable_repo:
|
||||
self._load_space_variables()
|
||||
|
||||
# Set initial request variables
|
||||
if variables:
|
||||
for name, value in variables.items():
|
||||
self._scoped_vars.set(name, value, VariableScope.REQUEST)
|
||||
|
||||
def _load_space_variables(self) -> None:
|
||||
"""Load space-level variables from the repository."""
|
||||
if not self._variable_repo:
|
||||
return
|
||||
|
||||
space_vars = self._variable_repo.list_variables(self.space_id, scope="space")
|
||||
for var in space_vars:
|
||||
self._scoped_vars.set(var.name, var.value, VariableScope.SPACE)
|
||||
|
||||
doc_vars = self._variable_repo.list_variables(self.space_id, scope="document")
|
||||
for var in doc_vars:
|
||||
self._scoped_vars.set(var.name, var.value, VariableScope.DOCUMENT)
|
||||
|
||||
def set_current_document(self, document_id: str) -> None:
|
||||
"""
|
||||
Set the current document being processed.
|
||||
|
||||
Args:
|
||||
document_id: The document ID
|
||||
"""
|
||||
self._current_document_id = document_id
|
||||
|
||||
def get_current_document(self) -> Optional[str]:
|
||||
"""Get the current document being processed."""
|
||||
return self._current_document_id
|
||||
|
||||
def track_reference(self, target_doc_id: str) -> None:
|
||||
"""
|
||||
Track a reference from current document to target.
|
||||
|
||||
Args:
|
||||
target_doc_id: The document being referenced
|
||||
"""
|
||||
if self._current_document_id:
|
||||
self._references.append((self._current_document_id, target_doc_id))
|
||||
|
||||
def get_tracked_references(self) -> List[tuple]:
|
||||
"""
|
||||
Get all tracked references.
|
||||
|
||||
Returns:
|
||||
List of (source_doc_id, target_doc_id) tuples
|
||||
"""
|
||||
return list(self._references)
|
||||
|
||||
def clear_tracked_references(self) -> None:
|
||||
"""Clear all tracked references."""
|
||||
self._references.clear()
|
||||
|
||||
# Override variable methods to use scoped storage
|
||||
|
||||
def set_variable(self, name: str, value: Any, scope: str = VariableScope.REQUEST) -> None:
|
||||
"""
|
||||
Set a variable in the specified scope.
|
||||
|
||||
Args:
|
||||
name: Variable name
|
||||
value: Variable value
|
||||
scope: Variable scope (request, document, or space)
|
||||
"""
|
||||
self._scoped_vars.set(name, value, scope)
|
||||
|
||||
# Persist space-level variables if repository available
|
||||
if scope == VariableScope.SPACE and self._variable_repo:
|
||||
var = SpaceVariable(
|
||||
space_id=self.space_id,
|
||||
name=name,
|
||||
value=value,
|
||||
scope=scope,
|
||||
)
|
||||
self._variable_repo.set_variable(var)
|
||||
|
||||
def get_variable(self, name: str, default: Any = None) -> Any:
|
||||
"""
|
||||
Get a variable from the scoped storage.
|
||||
|
||||
Args:
|
||||
name: Variable name
|
||||
default: Default value if not found
|
||||
|
||||
Returns:
|
||||
Variable value or default
|
||||
"""
|
||||
return self._scoped_vars.get(name, default)
|
||||
|
||||
def substitute_variables(self, text: str) -> str:
|
||||
"""
|
||||
Substitute variables in text using scoped variable resolution.
|
||||
|
||||
Args:
|
||||
text: Text containing {{variable}} references
|
||||
|
||||
Returns:
|
||||
Text with variables substituted
|
||||
"""
|
||||
import re
|
||||
|
||||
def replace_var(match):
|
||||
var_name = match.group(1).strip()
|
||||
value = self._scoped_vars.get(var_name)
|
||||
return str(value) if value is not None else match.group(0)
|
||||
|
||||
return re.sub(r'\{\{([^}]+)\}\}', replace_var, text)
|
||||
|
||||
@property
|
||||
def variables(self) -> Dict[str, Any]:
|
||||
"""Get all variables merged with proper precedence."""
|
||||
return self._scoped_vars.get_all()
|
||||
|
||||
@variables.setter
|
||||
def variables(self, value: Dict[str, Any]) -> None:
|
||||
"""Set request-level variables."""
|
||||
self._scoped_vars.request_vars = value
|
||||
|
||||
def create_child_context(
|
||||
self, new_base_path: Optional[Path] = None
|
||||
) -> "SpaceTransclusionContext":
|
||||
"""
|
||||
Create a child context for nested processing.
|
||||
|
||||
Args:
|
||||
new_base_path: New base path for the child context
|
||||
|
||||
Returns:
|
||||
New SpaceTransclusionContext with inherited state
|
||||
"""
|
||||
child = SpaceTransclusionContext(
|
||||
space_id=self.space_id,
|
||||
base_path=new_base_path or self.base_path,
|
||||
max_depth=self.max_depth,
|
||||
variable_repo=self._variable_repo,
|
||||
)
|
||||
|
||||
# Copy scoped variables
|
||||
child._scoped_vars.space_vars = self._scoped_vars.space_vars.copy()
|
||||
child._scoped_vars.document_vars = self._scoped_vars.document_vars.copy()
|
||||
child._scoped_vars.request_vars = self._scoped_vars.request_vars.copy()
|
||||
|
||||
# Copy processing state
|
||||
child.current_depth = self.current_depth
|
||||
child.inclusion_stack = self.inclusion_stack.copy()
|
||||
child.processed_files = self.processed_files.copy()
|
||||
|
||||
# Share reference tracking
|
||||
child._current_document_id = self._current_document_id
|
||||
child._references = self._references # Shared list
|
||||
|
||||
return child
|
||||
|
||||
|
||||
class CrossSpaceResolver:
|
||||
"""
|
||||
Resolves references across space boundaries.
|
||||
|
||||
Enables transclusion from one space to reference content in another space.
|
||||
"""
|
||||
|
||||
def __init__(self, contexts: Dict[str, SpaceTransclusionContext]):
|
||||
"""
|
||||
Initialize the cross-space resolver.
|
||||
|
||||
Args:
|
||||
contexts: Dictionary mapping space_id to SpaceTransclusionContext
|
||||
"""
|
||||
self._contexts = contexts
|
||||
|
||||
def add_context(self, space_id: str, context: SpaceTransclusionContext) -> None:
|
||||
"""Add a space context."""
|
||||
self._contexts[space_id] = context
|
||||
|
||||
def get_context(self, space_id: str) -> Optional[SpaceTransclusionContext]:
|
||||
"""Get the context for a space."""
|
||||
return self._contexts.get(space_id)
|
||||
|
||||
def resolve_variable(
|
||||
self,
|
||||
space_id: str,
|
||||
var_name: str,
|
||||
default: Any = None,
|
||||
) -> Any:
|
||||
"""
|
||||
Resolve a variable from a specific space.
|
||||
|
||||
Args:
|
||||
space_id: The space to look up
|
||||
var_name: Variable name
|
||||
default: Default value if not found
|
||||
|
||||
Returns:
|
||||
Variable value or default
|
||||
"""
|
||||
context = self._contexts.get(space_id)
|
||||
if context:
|
||||
return context.get_variable(var_name, default)
|
||||
return default
|
||||
|
||||
def resolve_cross_space_reference(
|
||||
self,
|
||||
reference: str,
|
||||
current_space_id: str,
|
||||
) -> Optional[tuple]:
|
||||
"""
|
||||
Parse and resolve a cross-space reference.
|
||||
|
||||
Reference format: "space:other-space/path/to/doc.md"
|
||||
or just "path/to/doc.md" for current space.
|
||||
|
||||
Args:
|
||||
reference: The reference string
|
||||
current_space_id: Current space ID for relative references
|
||||
|
||||
Returns:
|
||||
Tuple of (space_id, path) or None if invalid
|
||||
"""
|
||||
if ":" in reference and reference.startswith("space:"):
|
||||
# Cross-space reference
|
||||
_, rest = reference.split(":", 1)
|
||||
if "/" in rest:
|
||||
space_name, path = rest.split("/", 1)
|
||||
return (space_name, "/" + path)
|
||||
return None
|
||||
else:
|
||||
# Same-space reference
|
||||
return (current_space_id, reference)
|
||||
336
markitect/spaces/transclusion/reference_graph.py
Normal file
336
markitect/spaces/transclusion/reference_graph.py
Normal file
@@ -0,0 +1,336 @@
|
||||
"""
|
||||
Reference graph for transclusion dependency tracking.
|
||||
|
||||
This module provides a graph-based system for tracking which documents
|
||||
reference which other documents, enabling efficient cache invalidation.
|
||||
"""
|
||||
|
||||
from collections import defaultdict
|
||||
from typing import Dict, List, Set, Optional
|
||||
from dataclasses import dataclass, field
|
||||
|
||||
from ..models import TransclusionReference
|
||||
from ..repositories.interfaces import IReferenceRepository
|
||||
|
||||
|
||||
@dataclass
|
||||
class DependencyNode:
|
||||
"""
|
||||
A node in the dependency graph representing a document.
|
||||
|
||||
Tracks both outgoing references (what this document includes)
|
||||
and incoming references (what includes this document).
|
||||
"""
|
||||
|
||||
document_id: str
|
||||
space_id: str
|
||||
# Documents this document references (includes)
|
||||
references: Set[str] = field(default_factory=set)
|
||||
# Documents that reference (include) this document
|
||||
dependents: Set[str] = field(default_factory=set)
|
||||
|
||||
|
||||
class ReferenceGraph:
|
||||
"""
|
||||
In-memory graph of document dependencies.
|
||||
|
||||
Used for efficient cache invalidation by tracking which documents
|
||||
depend on which other documents.
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
"""Initialize an empty reference graph."""
|
||||
# Map of document_id -> DependencyNode
|
||||
self._nodes: Dict[str, DependencyNode] = {}
|
||||
# Map of space_id -> set of document_ids in that space
|
||||
self._spaces: Dict[str, Set[str]] = defaultdict(set)
|
||||
|
||||
def _get_or_create_node(self, document_id: str, space_id: str) -> DependencyNode:
|
||||
"""Get or create a node for a document."""
|
||||
if document_id not in self._nodes:
|
||||
self._nodes[document_id] = DependencyNode(
|
||||
document_id=document_id,
|
||||
space_id=space_id,
|
||||
)
|
||||
self._spaces[space_id].add(document_id)
|
||||
return self._nodes[document_id]
|
||||
|
||||
def add_reference(
|
||||
self,
|
||||
source_doc_id: str,
|
||||
target_doc_id: str,
|
||||
space_id: str,
|
||||
) -> None:
|
||||
"""
|
||||
Add a reference from source to target document.
|
||||
|
||||
Args:
|
||||
source_doc_id: The document doing the including
|
||||
target_doc_id: The document being included
|
||||
space_id: The space ID
|
||||
"""
|
||||
source_node = self._get_or_create_node(source_doc_id, space_id)
|
||||
target_node = self._get_or_create_node(target_doc_id, space_id)
|
||||
|
||||
source_node.references.add(target_doc_id)
|
||||
target_node.dependents.add(source_doc_id)
|
||||
|
||||
def remove_reference(
|
||||
self,
|
||||
source_doc_id: str,
|
||||
target_doc_id: str,
|
||||
) -> None:
|
||||
"""
|
||||
Remove a reference from source to target.
|
||||
|
||||
Args:
|
||||
source_doc_id: The source document
|
||||
target_doc_id: The target document
|
||||
"""
|
||||
if source_doc_id in self._nodes:
|
||||
self._nodes[source_doc_id].references.discard(target_doc_id)
|
||||
if target_doc_id in self._nodes:
|
||||
self._nodes[target_doc_id].dependents.discard(source_doc_id)
|
||||
|
||||
def clear_references_from(self, source_doc_id: str) -> List[str]:
|
||||
"""
|
||||
Clear all references from a source document.
|
||||
|
||||
Args:
|
||||
source_doc_id: The source document
|
||||
|
||||
Returns:
|
||||
List of target document IDs that were referenced
|
||||
"""
|
||||
if source_doc_id not in self._nodes:
|
||||
return []
|
||||
|
||||
node = self._nodes[source_doc_id]
|
||||
targets = list(node.references)
|
||||
|
||||
# Remove from all targets' dependent lists
|
||||
for target_id in targets:
|
||||
if target_id in self._nodes:
|
||||
self._nodes[target_id].dependents.discard(source_doc_id)
|
||||
|
||||
node.references.clear()
|
||||
return targets
|
||||
|
||||
def get_references(self, document_id: str) -> Set[str]:
|
||||
"""
|
||||
Get all documents referenced by a document.
|
||||
|
||||
Args:
|
||||
document_id: The document ID
|
||||
|
||||
Returns:
|
||||
Set of referenced document IDs
|
||||
"""
|
||||
if document_id not in self._nodes:
|
||||
return set()
|
||||
return self._nodes[document_id].references.copy()
|
||||
|
||||
def get_dependents(self, document_id: str) -> Set[str]:
|
||||
"""
|
||||
Get all documents that depend on (reference) a document.
|
||||
|
||||
Args:
|
||||
document_id: The document ID
|
||||
|
||||
Returns:
|
||||
Set of dependent document IDs
|
||||
"""
|
||||
if document_id not in self._nodes:
|
||||
return set()
|
||||
return self._nodes[document_id].dependents.copy()
|
||||
|
||||
def get_transitive_dependents(self, document_id: str) -> Set[str]:
|
||||
"""
|
||||
Get all documents that directly or indirectly depend on a document.
|
||||
|
||||
Performs a breadth-first traversal of the dependency graph.
|
||||
|
||||
Args:
|
||||
document_id: The document ID
|
||||
|
||||
Returns:
|
||||
Set of all transitive dependent document IDs
|
||||
"""
|
||||
result = set()
|
||||
to_visit = list(self.get_dependents(document_id))
|
||||
visited = {document_id}
|
||||
|
||||
while to_visit:
|
||||
current = to_visit.pop(0)
|
||||
if current in visited:
|
||||
continue
|
||||
visited.add(current)
|
||||
result.add(current)
|
||||
|
||||
# Add this document's dependents to visit list
|
||||
for dependent in self.get_dependents(current):
|
||||
if dependent not in visited:
|
||||
to_visit.append(dependent)
|
||||
|
||||
return result
|
||||
|
||||
def get_documents_in_space(self, space_id: str) -> Set[str]:
|
||||
"""
|
||||
Get all document IDs tracked in a space.
|
||||
|
||||
Args:
|
||||
space_id: The space ID
|
||||
|
||||
Returns:
|
||||
Set of document IDs
|
||||
"""
|
||||
return self._spaces.get(space_id, set()).copy()
|
||||
|
||||
def remove_document(self, document_id: str) -> None:
|
||||
"""
|
||||
Remove a document and all its references from the graph.
|
||||
|
||||
Args:
|
||||
document_id: The document ID to remove
|
||||
"""
|
||||
if document_id not in self._nodes:
|
||||
return
|
||||
|
||||
node = self._nodes[document_id]
|
||||
|
||||
# Remove this document from all its targets' dependent lists
|
||||
for target_id in node.references:
|
||||
if target_id in self._nodes:
|
||||
self._nodes[target_id].dependents.discard(document_id)
|
||||
|
||||
# Remove this document from all its dependents' reference lists
|
||||
for dependent_id in node.dependents:
|
||||
if dependent_id in self._nodes:
|
||||
self._nodes[dependent_id].references.discard(document_id)
|
||||
|
||||
# Remove from space tracking
|
||||
self._spaces[node.space_id].discard(document_id)
|
||||
|
||||
# Delete the node
|
||||
del self._nodes[document_id]
|
||||
|
||||
def clear_space(self, space_id: str) -> None:
|
||||
"""
|
||||
Clear all references for documents in a space.
|
||||
|
||||
Args:
|
||||
space_id: The space ID
|
||||
"""
|
||||
doc_ids = list(self._spaces.get(space_id, set()))
|
||||
for doc_id in doc_ids:
|
||||
self.remove_document(doc_id)
|
||||
|
||||
|
||||
class PersistentReferenceGraph(ReferenceGraph):
|
||||
"""
|
||||
Reference graph backed by persistent storage.
|
||||
|
||||
Extends ReferenceGraph to persist references to a repository,
|
||||
enabling cache invalidation across restarts.
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
space_id: str,
|
||||
reference_repo: IReferenceRepository,
|
||||
load_on_init: bool = True,
|
||||
):
|
||||
"""
|
||||
Initialize a persistent reference graph.
|
||||
|
||||
Args:
|
||||
space_id: The space ID
|
||||
reference_repo: Repository for persisting references
|
||||
load_on_init: Whether to load existing references on init
|
||||
"""
|
||||
super().__init__()
|
||||
self.space_id = space_id
|
||||
self._reference_repo = reference_repo
|
||||
|
||||
if load_on_init:
|
||||
self._load_from_repository()
|
||||
|
||||
def _load_from_repository(self) -> None:
|
||||
"""Load all references from the repository."""
|
||||
# Get all documents in space and their references
|
||||
# This is a simplified approach - in production you might want
|
||||
# to load lazily or use a more efficient query
|
||||
pass # Repository doesn't have a list_all method, would need to enhance
|
||||
|
||||
def add_reference(
|
||||
self,
|
||||
source_doc_id: str,
|
||||
target_doc_id: str,
|
||||
space_id: Optional[str] = None,
|
||||
) -> None:
|
||||
"""
|
||||
Add a reference and persist it.
|
||||
|
||||
Args:
|
||||
source_doc_id: Source document ID
|
||||
target_doc_id: Target document ID
|
||||
space_id: Optional space ID override
|
||||
"""
|
||||
space = space_id or self.space_id
|
||||
|
||||
# Update in-memory graph
|
||||
super().add_reference(source_doc_id, target_doc_id, space)
|
||||
|
||||
# Persist to repository
|
||||
ref = TransclusionReference(
|
||||
source_doc_id=source_doc_id,
|
||||
target_doc_id=target_doc_id,
|
||||
space_id=space,
|
||||
)
|
||||
self._reference_repo.add_reference(ref)
|
||||
|
||||
def clear_references_from(self, source_doc_id: str) -> List[str]:
|
||||
"""
|
||||
Clear references from source and persist.
|
||||
|
||||
Args:
|
||||
source_doc_id: Source document ID
|
||||
|
||||
Returns:
|
||||
List of cleared target document IDs
|
||||
"""
|
||||
# Clear from in-memory graph
|
||||
targets = super().clear_references_from(source_doc_id)
|
||||
|
||||
# Clear from repository
|
||||
self._reference_repo.clear_references_from(source_doc_id, self.space_id)
|
||||
|
||||
return targets
|
||||
|
||||
def get_dependents_from_repo(self, document_id: str) -> List[str]:
|
||||
"""
|
||||
Get dependents directly from repository.
|
||||
|
||||
Useful when graph may not be fully loaded.
|
||||
|
||||
Args:
|
||||
document_id: The document ID
|
||||
|
||||
Returns:
|
||||
List of dependent document IDs
|
||||
"""
|
||||
return self._reference_repo.get_dependents(document_id, self.space_id)
|
||||
|
||||
def sync_with_repository(self) -> None:
|
||||
"""
|
||||
Sync in-memory graph with repository.
|
||||
|
||||
Useful after batch operations or to ensure consistency.
|
||||
"""
|
||||
# Clear in-memory graph for this space
|
||||
self.clear_space(self.space_id)
|
||||
|
||||
# Reload from repository
|
||||
# Note: This would need a method to list all references in space
|
||||
# For now, the graph is built incrementally during document processing
|
||||
pass
|
||||
Reference in New Issue
Block a user