2eb1019da9
Validators can now return enriched data via ValidationResult.accept_with() instead of only accepting or rejecting operations. The engine applies returned fields (contents, tags, tag_groups) to the operation parameters. - Add accept_with() factory to ValidationResult with optional enrichment fields: contents, tags, tags_match, tag_groups - Add tags, tags_match, tag_groups to RecallContext so validators can see current filter state - Update _validate_operation to return ValidationResult - Apply enrichment from result at all retain (2 sites) and recall call sites in MemoryEngine - Existing validators using accept()/reject() work unchanged
724 lines
24 KiB
Python
724 lines
24 KiB
Python
"""Operation Validator Extension for validating retain/recall/reflect/consolidate operations."""
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from abc import ABC, abstractmethod
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from dataclasses import dataclass, field
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from datetime import datetime
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from typing import TYPE_CHECKING, Any
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from hindsight_api.extensions.base import Extension
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if TYPE_CHECKING:
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from hindsight_api.engine.memory_engine import Budget
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from hindsight_api.engine.response_models import RecallResult as RecallResultModel
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from hindsight_api.engine.response_models import ReflectResult
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from hindsight_api.engine.search.tags import TagGroup, TagsMatch
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from hindsight_api.models import RequestContext
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class OperationValidationError(Exception):
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"""Raised when an operation fails validation."""
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def __init__(self, reason: str, status_code: int = 403):
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self.reason = reason
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self.status_code = status_code
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super().__init__(f"Operation validation failed: {reason}")
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@dataclass
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class ValidationResult:
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"""Result of an operation validation.
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Validators return this to accept or reject an operation. When accepting,
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validators can optionally return modified data that the engine will use
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instead of the original request parameters. This enables context enrichment
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(e.g., injecting tags or tag_groups).
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"""
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allowed: bool
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reason: str | None = None
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status_code: int = 403 # Default to Forbidden
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# Optional enrichment fields — returned by validator, used by engine if present.
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# None means "no modification" (engine uses original values).
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contents: list[dict] | None = None # Enriched retain contents (e.g., injected tags/strategy)
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tags: list[str] | None = None # Enriched recall tags
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tags_match: "TagsMatch | None" = None # Enriched recall tags match mode
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tag_groups: "list[TagGroup] | None" = None # Enriched recall tag_groups
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@classmethod
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def accept(cls) -> "ValidationResult":
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"""Create an accepted validation result (no enrichment)."""
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return cls(allowed=True)
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@classmethod
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def accept_with(
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cls,
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*,
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contents: list[dict] | None = None,
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tags: list[str] | None = None,
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tags_match: "TagsMatch | None" = None,
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tag_groups: "list[TagGroup] | None" = None,
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) -> "ValidationResult":
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"""Create an accepted validation result with enriched data.
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The engine will use the returned values instead of the original request
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parameters. Only non-None fields are applied; None means "keep original".
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"""
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return cls(
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allowed=True,
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contents=contents,
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tags=tags,
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tags_match=tags_match,
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tag_groups=tag_groups,
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)
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@classmethod
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def reject(cls, reason: str, status_code: int = 403) -> "ValidationResult":
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"""Create a rejected validation result with a reason and HTTP status code."""
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return cls(allowed=False, reason=reason, status_code=status_code)
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# =============================================================================
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# Pre-operation Contexts (all user-provided parameters)
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# =============================================================================
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@dataclass
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class RetainContext:
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"""Context for a retain operation validation (pre-operation).
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Contains ALL user-provided parameters for the retain operation.
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To enrich contents (e.g., inject tags or strategy), return them
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via ValidationResult.accept_with(contents=...).
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"""
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bank_id: str
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contents: list[dict] # List of {content, context, event_date, document_id, tags, strategy}
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request_context: "RequestContext"
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document_id: str | None = None
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fact_type_override: str | None = None
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confidence_score: float | None = None
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@dataclass
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class RecallContext:
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"""Context for a recall operation validation (pre-operation).
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Contains ALL user-provided parameters for the recall operation.
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To enrich tag filters (e.g., inject tag_groups), return them
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via ValidationResult.accept_with(tag_groups=...).
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"""
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bank_id: str
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query: str
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request_context: "RequestContext"
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budget: "Budget | None" = None
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max_tokens: int = 4096
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enable_trace: bool = False
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fact_types: list[str] = field(default_factory=list)
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question_date: datetime | None = None
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include_entities: bool = False
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max_entity_tokens: int = 500
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include_chunks: bool = False
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max_chunk_tokens: int = 8192
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tags: list[str] | None = None
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tags_match: "TagsMatch" = "any"
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tag_groups: "list[TagGroup] | None" = None
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@dataclass
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class ReflectContext:
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"""Context for a reflect operation validation (pre-operation).
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Contains ALL user-provided parameters for the reflect operation.
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"""
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bank_id: str
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query: str
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request_context: "RequestContext"
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budget: "Budget | None" = None
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context: str | None = None
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# =============================================================================
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# Consolidation Pre-operation Context
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# =============================================================================
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@dataclass
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class ConsolidateContext:
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"""Context for a consolidation operation validation (pre-operation)."""
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bank_id: str
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request_context: "RequestContext"
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# =============================================================================
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# Post-operation Contexts (includes results)
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# =============================================================================
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@dataclass
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class RetainResult:
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"""Result context for post-retain hook.
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Contains the operation parameters and the result.
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"""
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bank_id: str
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contents: list[dict]
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request_context: "RequestContext"
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document_id: str | None
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fact_type_override: str | None
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confidence_score: float | None
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# Result
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unit_ids: list[list[str]] # List of unit IDs per content item
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success: bool = True
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error: str | None = None
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# Actual LLM token usage (populated by engine when available)
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llm_input_tokens: int | None = None
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llm_output_tokens: int | None = None
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llm_total_tokens: int | None = None
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@dataclass
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class RecallResult:
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"""Result context for post-recall hook.
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Contains the operation parameters and the result.
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"""
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bank_id: str
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query: str
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request_context: "RequestContext"
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budget: "Budget | None"
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max_tokens: int
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enable_trace: bool
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fact_types: list[str]
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question_date: datetime | None
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include_entities: bool
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max_entity_tokens: int
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include_chunks: bool
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max_chunk_tokens: int
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# Result
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result: "RecallResultModel | None" = None
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success: bool = True
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error: str | None = None
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@dataclass
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class ReflectResultContext:
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"""Result context for post-reflect hook.
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Contains the operation parameters and the result.
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"""
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bank_id: str
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query: str
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request_context: "RequestContext"
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budget: "Budget | None"
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context: str | None
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# Result
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result: "ReflectResult | None" = None
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success: bool = True
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error: str | None = None
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# =============================================================================
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# Consolidation Post-operation Context
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# =============================================================================
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@dataclass
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class ConsolidateResult:
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"""Result context for post-consolidation hook."""
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bank_id: str
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request_context: "RequestContext"
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# Result
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processed: int = 0
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created: int = 0
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updated: int = 0
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success: bool = True
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error: str | None = None
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# =============================================================================
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# Bank Management Contexts
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# =============================================================================
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@dataclass
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class BankReadContext:
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"""Context for a bank read operation validation (pre-operation)."""
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bank_id: str
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operation: str # "get_bank_profile", "get_bank_stats"
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request_context: "RequestContext"
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@dataclass
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class BankWriteContext:
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"""Context for a bank write operation validation (pre-operation)."""
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bank_id: str
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operation: str # "delete_bank", "update_bank", "update_bank_disposition", "set_bank_mission", "merge_bank_mission", "clear_observations", "clear_observations_for_memory"
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request_context: "RequestContext"
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@dataclass
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class BankListContext:
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"""Context for filtering the bank list (post-query)."""
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banks: list[dict]
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request_context: "RequestContext"
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@dataclass
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class BankListResult:
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"""Result of filtering the bank list."""
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banks: list[dict]
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# =============================================================================
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# Mental Model Contexts
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# =============================================================================
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@dataclass
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class MentalModelGetContext:
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"""Context for a mental model GET operation validation (pre-operation)."""
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bank_id: str
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mental_model_id: str
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request_context: "RequestContext"
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@dataclass
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class MentalModelRefreshContext:
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"""Context for a mental model refresh/create operation validation (pre-operation)."""
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bank_id: str
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mental_model_id: str | None # None for create (not yet assigned)
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request_context: "RequestContext"
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@dataclass
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class MentalModelGetResult:
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"""Result context for post-mental-model-GET hook."""
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bank_id: str
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mental_model_id: str
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request_context: "RequestContext"
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output_tokens: int # tokens in the returned content
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success: bool = True
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error: str | None = None
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@dataclass
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class MentalModelRefreshResult:
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"""Result context for post-mental-model-refresh hook."""
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bank_id: str
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mental_model_id: str
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request_context: "RequestContext"
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query_tokens: int # tokens in source_query
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output_tokens: int # tokens in generated content
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context_tokens: int # tokens in context (if any)
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facts_used: int # facts referenced in based_on
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mental_models_used: int # mental models referenced in based_on
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success: bool = True
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error: str | None = None
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# =============================================================================
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# File Conversion Post-operation Context
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# =============================================================================
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@dataclass
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class FileConvertResult:
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"""Result context for post-file-conversion hook.
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Fired after a file is converted to markdown, before the retain step.
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"""
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bank_id: str
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parser_name: str
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filename: str
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output_chars: int
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output_text: str
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request_context: "RequestContext"
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success: bool = True
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error: str | None = None
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class OperationValidatorExtension(Extension, ABC):
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"""
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Validates and hooks into retain/recall/reflect/consolidate operations.
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This extension allows implementing custom logic such as:
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- Rate limiting (pre-operation)
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- Quota enforcement (pre-operation)
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- Permission checks (pre-operation)
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- Content filtering (pre-operation)
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- Usage tracking (post-operation)
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- Audit logging (post-operation)
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- Metrics collection (post-operation)
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Enable via environment variable:
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HINDSIGHT_API_OPERATION_VALIDATOR_EXTENSION=mypackage.validators:MyValidator
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Configuration is passed from prefixed environment variables:
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HINDSIGHT_API_OPERATION_VALIDATOR_MAX_REQUESTS=100
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-> config = {"max_requests": "100"}
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Hook execution order:
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1. validate_* (pre-operation)
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2. [operation executes]
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3. on_*_complete (post-operation)
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Supported operations:
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- retain, recall, reflect (core memory operations)
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- consolidate (mental models consolidation)
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"""
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# =========================================================================
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# Pre-operation validation hooks (abstract - must be implemented)
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# =========================================================================
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@abstractmethod
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async def validate_retain(self, ctx: RetainContext) -> ValidationResult:
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"""
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Validate a retain operation before execution.
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Called before the retain operation is processed. Return ValidationResult.reject()
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to prevent the operation from executing.
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Args:
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ctx: Context containing all user-provided parameters:
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- bank_id: Bank identifier
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- contents: List of content dicts
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- request_context: Request context with auth info
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- document_id: Optional document ID
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- fact_type_override: Optional fact type override
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- confidence_score: Optional confidence score
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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...
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@abstractmethod
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async def validate_recall(self, ctx: RecallContext) -> ValidationResult:
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"""
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Validate a recall operation before execution.
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Called before the recall operation is processed. Return ValidationResult.reject()
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to prevent the operation from executing.
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Args:
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ctx: Context containing all user-provided parameters:
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- bank_id: Bank identifier
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- query: Search query
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- request_context: Request context with auth info
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- budget: Budget level
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- max_tokens: Maximum tokens to return
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- enable_trace: Whether to include trace info
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- fact_types: List of fact types to search
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- question_date: Optional date context for query
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- include_entities: Whether to include entity data
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- max_entity_tokens: Max tokens for entities
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- include_chunks: Whether to include chunks
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- max_chunk_tokens: Max tokens for chunks
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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...
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@abstractmethod
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async def validate_reflect(self, ctx: ReflectContext) -> ValidationResult:
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"""
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Validate a reflect operation before execution.
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Called before the reflect operation is processed. Return ValidationResult.reject()
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to prevent the operation from executing.
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Args:
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ctx: Context containing all user-provided parameters:
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- bank_id: Bank identifier
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- query: Question to answer
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- request_context: Request context with auth info
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- budget: Budget level
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- context: Optional additional context
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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...
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# =========================================================================
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# Post-operation hooks (optional - override to implement)
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# =========================================================================
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async def on_retain_complete(self, result: RetainResult) -> None:
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"""
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Called after a retain operation completes (success or failure).
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Override this method to implement post-operation logic such as:
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- Usage tracking
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- Audit logging
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- Metrics collection
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- Notifications
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Args:
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result: Result context containing:
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- All original operation parameters
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- unit_ids: List of created unit IDs (if success)
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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async def on_recall_complete(self, result: RecallResult) -> None:
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"""
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Called after a recall operation completes (success or failure).
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Override this method to implement post-operation logic such as:
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- Usage tracking
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- Audit logging
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- Metrics collection
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- Query analytics
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Args:
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result: Result context containing:
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- All original operation parameters
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- result: RecallResultModel (if success)
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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async def on_reflect_complete(self, result: ReflectResultContext) -> None:
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"""
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Called after a reflect operation completes (success or failure).
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Override this method to implement post-operation logic such as:
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- Usage tracking
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- Audit logging
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- Metrics collection
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- Response analytics
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Args:
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result: Result context containing:
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- All original operation parameters
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- result: ReflectResult (if success)
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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# =========================================================================
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# Consolidation - Pre-operation validation hook (optional - override to implement)
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# =========================================================================
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async def validate_consolidate(self, ctx: ConsolidateContext) -> ValidationResult:
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"""
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Validate a consolidation operation before execution.
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Override to implement custom validation logic for consolidation.
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Args:
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ctx: Context containing:
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- bank_id: Bank identifier
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- request_context: Request context with auth info
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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return ValidationResult.accept()
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# =========================================================================
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# Consolidation - Post-operation hook (optional - override to implement)
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# =========================================================================
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async def on_consolidate_complete(self, result: ConsolidateResult) -> None:
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"""
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Called after a consolidation operation completes (success or failure).
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Override to implement post-operation logic such as usage tracking or audit logging.
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Args:
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result: Result context containing:
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- bank_id: Bank identifier
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- processed: Number of memories processed
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- created: Number of mental models created
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- updated: Number of mental models updated
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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# =========================================================================
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# File Conversion - Post-operation hook (optional - override to implement)
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# =========================================================================
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async def on_file_convert_complete(self, result: FileConvertResult) -> None:
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"""
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Called after a file is converted to markdown (before the retain step).
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Override to implement post-conversion logic such as:
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- Billing for premium parsers (e.g., Iris)
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- Usage tracking
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- Audit logging
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Args:
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result: Result context containing:
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- bank_id: Bank identifier
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- parser_name: Name of the parser used (e.g., 'markitdown', 'iris')
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- filename: Original filename
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- output_chars: Character count of the converted markdown
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- request_context: Request context with auth info
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- success: Whether the conversion succeeded
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- error: Error message (if failed)
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"""
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pass
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# =========================================================================
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# Mental Model - Pre-operation validation hook (optional - override to implement)
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# =========================================================================
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async def validate_mental_model_get(self, ctx: MentalModelGetContext) -> ValidationResult:
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"""
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Validate a mental model GET operation before execution.
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Override to implement custom validation logic for mental model retrieval.
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Args:
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ctx: Context containing:
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- bank_id: Bank identifier
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- mental_model_id: Mental model identifier
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- request_context: Request context with auth info
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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return ValidationResult.accept()
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async def validate_mental_model_refresh(self, ctx: MentalModelRefreshContext) -> ValidationResult:
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"""
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Validate a mental model refresh/create operation before execution.
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Override to implement custom validation logic for mental model refresh.
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Args:
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ctx: Context containing:
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- bank_id: Bank identifier
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- mental_model_id: Mental model identifier (None for create)
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- request_context: Request context with auth info
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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return ValidationResult.accept()
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# =========================================================================
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# Mental Model - Post-operation hooks (optional - override to implement)
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# =========================================================================
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async def on_mental_model_get_complete(self, result: MentalModelGetResult) -> None:
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"""
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Called after a mental model GET operation completes (success or failure).
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Override to implement post-operation logic such as tracking or audit logging.
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Args:
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result: Result context containing:
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- bank_id: Bank identifier
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- mental_model_id: Mental model identifier
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- output_tokens: Token count of the returned content
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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async def on_mental_model_refresh_complete(self, result: MentalModelRefreshResult) -> None:
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"""
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Called after a mental model refresh operation completes (success or failure).
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Override to implement post-operation logic such as tracking or audit logging.
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Args:
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result: Result context containing:
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- bank_id: Bank identifier
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- mental_model_id: Mental model identifier
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- query_tokens: Tokens in source_query
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- output_tokens: Tokens in generated content
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- context_tokens: Tokens in context
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- facts_used: Number of facts referenced
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- mental_models_used: Number of mental models referenced
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- success: Whether the operation succeeded
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- error: Error message (if failed)
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"""
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pass
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# =========================================================================
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# Bank Management - Validation hooks (optional - override to implement)
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# =========================================================================
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async def validate_bank_read(self, ctx: BankReadContext) -> ValidationResult:
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"""
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Validate a bank read operation before execution.
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Override to implement custom validation logic for bank reads
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(get_bank_profile, get_bank_stats).
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Args:
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ctx: Context containing:
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- bank_id: Bank identifier
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- operation: Operation name
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- request_context: Request context with auth info
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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return ValidationResult.accept()
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async def validate_bank_write(self, ctx: BankWriteContext) -> ValidationResult:
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"""
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Validate a bank write operation before execution.
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Override to implement custom validation logic for bank writes
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(delete_bank, update_bank, update_bank_disposition, set_bank_mission,
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merge_bank_mission, clear_observations, clear_observations_for_memory).
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Args:
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ctx: Context containing:
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- bank_id: Bank identifier
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- operation: Operation name
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- request_context: Request context with auth info
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Returns:
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ValidationResult indicating whether the operation is allowed.
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"""
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return ValidationResult.accept()
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async def filter_bank_list(self, ctx: BankListContext) -> BankListResult:
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"""
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Filter the bank list after querying.
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Unlike validate_* methods, this is a post-query filter that narrows results
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rather than a gate that blocks the operation.
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Override to implement custom filtering (e.g., restrict to allowed banks).
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Args:
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ctx: Context containing:
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- banks: List of bank dicts from the database
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- request_context: Request context with auth info
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Returns:
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BankListResult with the filtered list of banks.
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"""
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return BankListResult(banks=ctx.banks)
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