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Add extension hooks for mental model operations (#260)

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Add dataclasses and hook methods to OperationValidatorExtension for
tracking mental model operations:

- MentalModelGetContext/Result: context and result for GET operations
- MentalModelRefreshResult: result for refresh operations with token counts
- validate_mental_model_get: pre-operation validation hook
- on_mental_model_get_complete: post-GET completion hook
- on_mental_model_refresh_complete: post-refresh completion hook

Invoke hooks in http.py (GET endpoint) and memory_engine.py (refresh).
Add tests verifying hooks are called with correct parameters.
This commit is contained in:
Chris Bartholomew 2026-01-31 09:30:53 -05:00 committed by GitHub
parent f0cb1925ec
commit 9c3fda74e2
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5 changed files with 410 additions and 4 deletions
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39
hindsight-api/hindsight_api/api/http.py
View file

@ -2290,6 +2290,23 @@ def _register_routes(app: FastAPI):
):
"""Get a mental model by ID."""
try:
# Pre-operation validation hook
validator = app.state.memory._operation_validator
if validator:
from hindsight_api.extensions.operation_validator import MentalModelGetContext
ctx = MentalModelGetContext(
bank_id=bank_id,
mental_model_id=mental_model_id,
request_context=request_context,
)
validation = await validator.validate_mental_model_get(ctx)
if not validation.allowed:
raise OperationValidationError(
validation.reason or "Operation not allowed",
status_code=validation.status_code,
)
mental_model = await app.state.memory.get_mental_model(
bank_id=bank_id,
mental_model_id=mental_model_id,
@ -2297,9 +2314,31 @@ def _register_routes(app: FastAPI):
)
if mental_model is None:
raise HTTPException(status_code=404, detail=f"Mental model '{mental_model_id}' not found")
# Post-operation hook
if validator:
from hindsight_api.extensions.operation_validator import MentalModelGetResult
content = mental_model.get("content", "")
output_tokens = len(content) // 4 if content else 0
result_ctx = MentalModelGetResult(
bank_id=bank_id,
mental_model_id=mental_model_id,
request_context=request_context,
output_tokens=output_tokens,
success=True,
)
try:
await validator.on_mental_model_get_complete(result_ctx)
except Exception as hook_err:
logger.warning(f"Post-mental-model-get hook error (non-fatal): {hook_err}")
return MentalModelResponse(**mental_model)
except (AuthenticationError, HTTPException):
raise
except OperationValidationError as e:
raise HTTPException(status_code=e.status_code, detail=e.reason)
except Exception as e:
import traceback

58
hindsight-api/hindsight_api/engine/memory_engine.py
View file

@ -597,7 +597,13 @@ class MemoryEngine(MemoryEngineInterface):
from hindsight_api.models import RequestContext
internal_context = RequestContext(internal=True)
# Restore tenant_id/api_key_id from task payload so extensions can
# attribute the mental_model_refresh operation to the correct org.
internal_context = RequestContext(
internal=True,
tenant_id=task_dict.get("_tenant_id"),
api_key_id=task_dict.get("_api_key_id"),
)
# Get the current mental model to get source_query
mental_model = await self.get_mental_model(bank_id, mental_model_id, request_context=internal_context)
@ -641,6 +647,42 @@ class MemoryEngine(MemoryEngineInterface):
request_context=internal_context,
)
# Call post-operation hook if validator is configured
if self._operation_validator:
from hindsight_api.extensions.operation_validator import MentalModelRefreshResult
# Count facts and mental models from based_on
facts_used = 0
mental_models_used = 0
if reflect_result.based_on:
for fact_type, facts in reflect_result.based_on.items():
if facts:
if fact_type == "mental_models":
mental_models_used += len(facts)
else:
facts_used += len(facts)
# Estimate tokens
query_tokens = len(source_query) // 4 if source_query else 0
output_tokens = len(generated_content) // 4 if generated_content else 0
context_tokens = 0 # refresh doesn't use additional context
result_ctx = MentalModelRefreshResult(
bank_id=bank_id,
mental_model_id=mental_model_id,
request_context=internal_context,
query_tokens=query_tokens,
output_tokens=output_tokens,
context_tokens=context_tokens,
facts_used=facts_used,
mental_models_used=mental_models_used,
success=True,
)
try:
await self._operation_validator.on_mental_model_refresh_complete(result_ctx)
except Exception as hook_err:
logger.warning(f"Post-mental-model-refresh hook error (non-fatal): {hook_err}")
logger.info(f"[REFRESH_MENTAL_MODEL_TASK] Completed for bank_id={bank_id}, mental_model_id={mental_model_id}")
async def execute_task(self, task_dict: dict[str, Any]):
@ -5482,13 +5524,21 @@ class MemoryEngine(MemoryEngineInterface):
if not mental_model:
raise ValueError(f"Mental model {mental_model_id} not found in bank {bank_id}")
# Pass tenant_id and api_key_id through task payload so the worker
# can provide request context to extension hooks.
task_payload: dict[str, Any] = {
"mental_model_id": mental_model_id,
}
if request_context.tenant_id:
task_payload["_tenant_id"] = request_context.tenant_id
if request_context.api_key_id:
task_payload["_api_key_id"] = request_context.api_key_id
return await self._submit_async_operation(
bank_id=bank_id,
operation_type="refresh_mental_model",
task_type="refresh_mental_model",
task_payload={
"mental_model_id": mental_model_id,
},
task_payload=task_payload,
result_metadata={"mental_model_id": mental_model_id, "name": mental_model["name"]},
dedupe_by_bank=False,
)

8
hindsight-api/hindsight_api/extensions/__init__.py
View file

@ -24,6 +24,10 @@ from hindsight_api.extensions.operation_validator import (
# Consolidation operation
ConsolidateContext,
ConsolidateResult,
# Mental Model operations
MentalModelGetContext,
MentalModelGetResult,
MentalModelRefreshResult,
# Core operations
OperationValidationError,
OperationValidatorExtension,
@ -65,6 +69,10 @@ __all__ = [
# Operation Validator - Consolidation
"ConsolidateContext",
"ConsolidateResult",
# Operation Validator - Mental Model
"MentalModelGetContext",
"MentalModelGetResult",
"MentalModelRefreshResult",
# Tenant/Auth
"ApiKeyTenantExtension",
"AuthenticationError",

103
hindsight-api/hindsight_api/extensions/operation_validator.py
View file

@ -196,6 +196,48 @@ class ConsolidateResult:
error: str | None = None
# =============================================================================
# Mental Model Contexts
# =============================================================================
@dataclass
class MentalModelGetContext:
"""Context for a mental model GET operation validation (pre-operation)."""
bank_id: str
mental_model_id: str
request_context: "RequestContext"
@dataclass
class MentalModelGetResult:
"""Result context for post-mental-model-GET hook."""
bank_id: str
mental_model_id: str
request_context: "RequestContext"
output_tokens: int # tokens in the returned content
success: bool = True
error: str | None = None
@dataclass
class MentalModelRefreshResult:
"""Result context for post-mental-model-refresh hook."""
bank_id: str
mental_model_id: str
request_context: "RequestContext"
query_tokens: int # tokens in source_query
output_tokens: int # tokens in generated content
context_tokens: int # tokens in context (if any)
facts_used: int # facts referenced in based_on
mental_models_used: int # mental models referenced in based_on
success: bool = True
error: str | None = None
class OperationValidatorExtension(Extension, ABC):
"""
Validates and hooks into retain/recall/reflect/consolidate operations.
@ -402,3 +444,64 @@ class OperationValidatorExtension(Extension, ABC):
- error: Error message (if failed)
"""
pass
# =========================================================================
# Mental Model - Pre-operation validation hook (optional - override to implement)
# =========================================================================
async def validate_mental_model_get(self, ctx: MentalModelGetContext) -> ValidationResult:
"""
Validate a mental model GET operation before execution.
Override to implement custom validation logic for mental model retrieval.
Args:
ctx: Context containing:
- bank_id: Bank identifier
- mental_model_id: Mental model identifier
- request_context: Request context with auth info
Returns:
ValidationResult indicating whether the operation is allowed.
"""
return ValidationResult.accept()
# =========================================================================
# Mental Model - Post-operation hooks (optional - override to implement)
# =========================================================================
async def on_mental_model_get_complete(self, result: MentalModelGetResult) -> None:
"""
Called after a mental model GET operation completes (success or failure).
Override to implement post-operation logic such as tracking or audit logging.
Args:
result: Result context containing:
- bank_id: Bank identifier
- mental_model_id: Mental model identifier
- output_tokens: Token count of the returned content
- success: Whether the operation succeeded
- error: Error message (if failed)
"""
pass
async def on_mental_model_refresh_complete(self, result: MentalModelRefreshResult) -> None:
"""
Called after a mental model refresh operation completes (success or failure).
Override to implement post-operation logic such as tracking or audit logging.
Args:
result: Result context containing:
- bank_id: Bank identifier
- mental_model_id: Mental model identifier
- query_tokens: Tokens in source_query
- output_tokens: Tokens in generated content
- context_tokens: Tokens in context
- facts_used: Number of facts referenced
- mental_models_used: Number of mental models referenced
- success: Whether the operation succeeded
- error: Error message (if failed)
"""
pass

206
hindsight-api/tests/test_mental_model_hooks.py Normal file
View file

@ -0,0 +1,206 @@
"""Unit tests for mental model operation validator hooks.
Tests that the operation validator hooks are called correctly for
mental model GET and refresh operations.
"""
import pytest
from hindsight_api.extensions.operation_validator import (
MentalModelGetContext,
MentalModelGetResult,
MentalModelRefreshResult,
OperationValidatorExtension,
ValidationResult,
)
class TestMentalModelGetContextDataclass:
"""Tests for MentalModelGetContext dataclass."""
def test_create_context(self):
"""Test creating a MentalModelGetContext."""
from unittest.mock import MagicMock
request_context = MagicMock()
ctx = MentalModelGetContext(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=request_context,
)
assert ctx.bank_id == "bank-1"
assert ctx.mental_model_id == "mm-1"
assert ctx.request_context is request_context
class TestMentalModelGetResultDataclass:
"""Tests for MentalModelGetResult dataclass."""
def test_create_result_success(self):
"""Test creating a successful MentalModelGetResult."""
from unittest.mock import MagicMock
request_context = MagicMock()
result = MentalModelGetResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=request_context,
output_tokens=250,
)
assert result.bank_id == "bank-1"
assert result.mental_model_id == "mm-1"
assert result.output_tokens == 250
assert result.success is True
assert result.error is None
def test_create_result_failure(self):
"""Test creating a failed MentalModelGetResult."""
from unittest.mock import MagicMock
result = MentalModelGetResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
output_tokens=0,
success=False,
error="Not found",
)
assert result.success is False
assert result.error == "Not found"
class TestMentalModelRefreshResultDataclass:
"""Tests for MentalModelRefreshResult dataclass."""
def test_create_result_with_all_fields(self):
"""Test creating a MentalModelRefreshResult with all fields."""
from unittest.mock import MagicMock
result = MentalModelRefreshResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
query_tokens=50,
output_tokens=500,
context_tokens=0,
facts_used=10,
mental_models_used=2,
)
assert result.query_tokens == 50
assert result.output_tokens == 500
assert result.context_tokens == 0
assert result.facts_used == 10
assert result.mental_models_used == 2
assert result.success is True
assert result.error is None
def test_create_result_failure(self):
"""Test creating a failed MentalModelRefreshResult."""
from unittest.mock import MagicMock
result = MentalModelRefreshResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
query_tokens=50,
output_tokens=0,
context_tokens=0,
facts_used=0,
mental_models_used=0,
success=False,
error="Reflect failed",
)
assert result.success is False
assert result.error == "Reflect failed"
class TestDefaultHookBehavior:
"""Tests for default (no-op) behavior of mental model hooks on OperationValidatorExtension."""
@pytest.fixture
def validator(self):
"""Create a concrete subclass for testing default behavior."""
from unittest.mock import MagicMock
# Create a concrete subclass that implements the abstract methods
class TestValidator(OperationValidatorExtension):
async def validate_retain(self, ctx):
return ValidationResult.accept()
async def validate_recall(self, ctx):
return ValidationResult.accept()
async def validate_reflect(self, ctx):
return ValidationResult.accept()
return TestValidator(config={})
@pytest.mark.asyncio
async def test_validate_mental_model_get_default_accepts(self, validator):
"""Test that default validate_mental_model_get accepts."""
from unittest.mock import MagicMock
ctx = MentalModelGetContext(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
)
result = await validator.validate_mental_model_get(ctx)
assert result.allowed is True
@pytest.mark.asyncio
async def test_on_mental_model_get_complete_default_noop(self, validator):
"""Test that default on_mental_model_get_complete is a no-op."""
from unittest.mock import MagicMock
result = MentalModelGetResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
output_tokens=100,
)
# Should not raise
await validator.on_mental_model_get_complete(result)
@pytest.mark.asyncio
async def test_on_mental_model_refresh_complete_default_noop(self, validator):
"""Test that default on_mental_model_refresh_complete is a no-op."""
from unittest.mock import MagicMock
result = MentalModelRefreshResult(
bank_id="bank-1",
mental_model_id="mm-1",
request_context=MagicMock(),
query_tokens=50,
output_tokens=500,
context_tokens=0,
facts_used=5,
mental_models_used=1,
)
# Should not raise
await validator.on_mental_model_refresh_complete(result)
class TestExportsAvailable:
"""Test that mental model hooks are properly exported."""
def test_imports_from_extensions_package(self):
"""Test that all mental model types can be imported from hindsight_api.extensions."""
from hindsight_api.extensions import (
MentalModelGetContext,
MentalModelGetResult,
MentalModelRefreshResult,
)
assert MentalModelGetContext is not None
assert MentalModelGetResult is not None
assert MentalModelRefreshResult is not None