fleet-memory/hindsight-api-slim/tests/test_metrics.py
Nicolò Boschi 15ea23d5d6
feat: introduce hindsight-api-slim and hindsight-all-slim packages (#560)
* feat: introduce hindsight-api-slim and hindsight-all-slim packages

Closes #552

- Move all source code from hindsight-api/ to new hindsight-api-slim/
- hindsight-api-slim has heavy ML deps (torch, sentence-transformers,
  transformers, einops, flashrank, mlx, mlx-lm, safetensors) and
  pg0-embedded as optional extras: [local-ml], [embedded-db], [all]
- hindsight-api becomes a zero-code meta-package depending on
  hindsight-api-slim[all] for full backward compatibility
- Add hindsight-all-slim meta-package: hindsight-api-slim + client + embed
- hindsight-all updated to depend on hindsight-api-slim[all]
- pg0.py: lazy-import pg0 with clear ImportError pointing to [embedded-db]
- Dockerfile: replace sed hack with proper uv sync --extra flags
- Update release.yml, test.yml, lint.sh, release.sh, CLAUDE.md and
  all path references throughout the repo

* refactor: rename hindsight/ directory to hindsight-all/

* docs: document hindsight-api-slim and hindsight-all-slim package variants

Add package variants table and extras explanation to installation.md

* docs: remove emojis from installation.md, use professional tone

* docs: link Docker slim variant to pip package variants section

* docs: consolidate Docker image variants into single table

* ci: fix working-directory paths after package restructure

- Replace all hindsight-api → hindsight-api-slim in test.yml
- Replace hindsight → hindsight-all in test.yml
- Add --extra embedded-db to test-embed API install step

* ci: add local-ml and embedded-db extras to API sync steps

These extras were previously implicit in the old hindsight-api package
(which bundled everything). Now that hindsight-api-slim uses optional
extras, we must explicitly request local-ml and embedded-db in CI.

* ci: add API install step with embedded-db to test-embed smoke test

The smoke test starts hindsight-api as a daemon, which requires pg0-embedded.
Add a dedicated install step for hindsight-api-slim with embedded-db extra
so the daemon can start successfully.

* ci: remove --no-install-project when using optional extras

When --no-install-project is combined with --extra, the optional deps
are not installed because extras require the project to be active.
Remove --no-install-project from steps that need local-ml or embedded-db.

* ci: fix ordering of uv sync steps to preserve optional extras

When uv sync runs for a different workspace member, it removes optional
extras installed for other members. Fix by always running extra-requiring
API sync last, after other workspace member syncs.

Also remove --no-install-project from embedded-db sync in test-embed,
as --no-install-project prevents optional extras from being active.

* ci: add local-ml extra to test-embed API install for smoke test

The smoke test starts the full API server which needs sentence-transformers
for local embeddings (default provider). Add local-ml extra to the install.

* ci: simplify extras with --all-extras and add slim pip smoke test

- Replace explicit --extra local-ml --extra embedded-db with --all-extras
  for cleaner, more maintainable sync steps
- Add test-pip-slim job: tests hindsight-api-slim[embedded-db] without
  local ML models, using Cohere for embeddings/reranking (mirrors Docker
  slim smoke test approach)

* ci: simplify slim smoke test to health check only (mirrors Docker test)
2026-03-13 13:50:03 +01:00

391 lines
15 KiB
Python

"""Tests for metrics instrumentation."""
import pytest
from unittest.mock import MagicMock, patch
from hindsight_api.metrics import (
MetricsCollector,
MetricsCollectorBase,
NoOpMetricsCollector,
get_metrics_collector,
get_token_bucket,
create_metrics_collector,
initialize_metrics,
)
class TestNoOpMetricsCollector:
"""Tests for the no-op metrics collector."""
def test_record_operation_is_noop(self):
"""Test that record_operation does nothing."""
collector = NoOpMetricsCollector()
# Should not raise any exception
with collector.record_operation("recall", bank_id="test_bank", source="api"):
pass
def test_nested_contexts_work(self):
"""Test that nested context managers work correctly."""
collector = NoOpMetricsCollector()
# Nested contexts should work without issues
with collector.record_operation("reflect", bank_id="test_bank", source="api"):
with collector.record_operation("recall", bank_id="test_bank", source="reflect"):
pass
def test_exception_propagates(self):
"""Test that exceptions inside context are propagated."""
collector = NoOpMetricsCollector()
with pytest.raises(ValueError, match="test error"):
with collector.record_operation("recall", bank_id="test_bank"):
raise ValueError("test error")
def test_record_llm_call_is_noop(self):
"""Test that record_llm_call does nothing."""
collector = NoOpMetricsCollector()
# Should not raise any exception
collector.record_llm_call(
provider="openai",
model="gpt-4",
scope="memory",
duration=1.5,
input_tokens=100,
output_tokens=50,
success=True,
)
class TestMetricsCollector:
"""Tests for the real metrics collector."""
@pytest.fixture
def mock_meter(self):
"""Create a mock meter for testing."""
meter = MagicMock()
# Create separate mocks for each histogram (operation_duration, llm_duration, http_request_duration)
histogram_mocks = [MagicMock(), MagicMock(), MagicMock()]
meter.create_histogram.side_effect = histogram_mocks
# Create separate mocks for each counter
# (operation_total, llm_tokens_input, llm_tokens_output, llm_calls_total, http_requests_total)
counter_mocks = [MagicMock() for _ in range(5)]
meter.create_counter.side_effect = counter_mocks
return meter
@pytest.fixture
def collector(self, mock_meter):
"""Create a MetricsCollector with a mock meter."""
with patch("hindsight_api.metrics.get_meter", return_value=mock_meter):
return MetricsCollector()
def test_record_operation_records_duration(self, collector):
"""Test that record_operation records duration."""
with collector.record_operation("recall", bank_id="test_bank", source="api"):
pass
# Histogram should have been called
collector.operation_duration.record.assert_called_once()
call_args = collector.operation_duration.record.call_args
# First arg is duration (should be > 0)
duration = call_args[0][0]
assert duration >= 0
# Second arg is attributes dict
attributes = call_args[0][1]
assert attributes["operation"] == "recall"
assert attributes["bank_id"] == "test_bank"
assert attributes["source"] == "api"
assert attributes["success"] == "true"
def test_record_operation_records_failure_on_exception(self, collector):
"""Test that record_operation records failure when exception occurs."""
with pytest.raises(RuntimeError):
with collector.record_operation("retain", bank_id="test_bank", source="api"):
raise RuntimeError("Test error")
# Should have recorded with success=false
call_args = collector.operation_duration.record.call_args
attributes = call_args[0][1]
assert attributes["success"] == "false"
def test_record_operation_with_budget(self, collector):
"""Test that budget is included in attributes when provided."""
with collector.record_operation("recall", bank_id="test_bank", source="api", budget="mid"):
pass
call_args = collector.operation_duration.record.call_args
attributes = call_args[0][1]
assert attributes["budget"] == "mid"
def test_record_operation_with_max_tokens(self, collector):
"""Test that max_tokens is included in attributes when provided."""
with collector.record_operation("recall", bank_id="test_bank", source="api", max_tokens=4096):
pass
call_args = collector.operation_duration.record.call_args
attributes = call_args[0][1]
assert attributes["max_tokens"] == "4096"
def test_record_operation_source_values(self, collector):
"""Test different source values: api, reflect, internal."""
sources = ["api", "reflect", "internal"]
for source in sources:
collector.operation_duration.record.reset_mock()
with collector.record_operation("recall", bank_id="test_bank", source=source):
pass
call_args = collector.operation_duration.record.call_args
attributes = call_args[0][1]
assert attributes["source"] == source
def test_nested_contexts_track_separately(self, collector):
"""Test that nested operations are tracked separately with different sources."""
# Simulate reflect (api) calling recall (reflect)
with collector.record_operation("reflect", bank_id="test_bank", source="api"):
with collector.record_operation("recall", bank_id="test_bank", source="reflect"):
pass
# Should have 2 calls to record
assert collector.operation_duration.record.call_count == 2
assert collector.operation_total.add.call_count == 2
# Check the calls
calls = collector.operation_duration.record.call_args_list
# First call should be recall (inner context exits first)
recall_attrs = calls[0][0][1]
assert recall_attrs["operation"] == "recall"
assert recall_attrs["source"] == "reflect"
# Second call should be reflect (outer context exits last)
reflect_attrs = calls[1][0][1]
assert reflect_attrs["operation"] == "reflect"
assert reflect_attrs["source"] == "api"
class TestGetMetricsCollector:
"""Tests for the get_metrics_collector function."""
def test_returns_noop_by_default(self):
"""Test that get_metrics_collector returns NoOpMetricsCollector by default."""
# Reset global state
import hindsight_api.metrics as metrics_module
original_collector = metrics_module._metrics_collector
try:
metrics_module._metrics_collector = NoOpMetricsCollector()
collector = get_metrics_collector()
assert isinstance(collector, NoOpMetricsCollector)
finally:
metrics_module._metrics_collector = original_collector
class TestMetricsCollectorBase:
"""Tests for the MetricsCollectorBase abstract class."""
def test_is_abstract(self):
"""Test that MetricsCollectorBase methods are abstract."""
# Create a class that inherits but doesn't implement
class IncompleteCollector(MetricsCollectorBase):
pass
collector = IncompleteCollector()
# Abstract methods should raise NotImplementedError
with pytest.raises(NotImplementedError):
with collector.record_operation("test", "test"):
pass
with pytest.raises(NotImplementedError):
collector.record_llm_call("test", "test", "test", 1.0)
class TestGetTokenBucket:
"""Tests for the get_token_bucket function."""
def test_bucket_0_100(self):
"""Test tokens < 100 return '0-100' bucket."""
assert get_token_bucket(0) == "0-100"
assert get_token_bucket(50) == "0-100"
assert get_token_bucket(99) == "0-100"
def test_bucket_100_500(self):
"""Test tokens 100-499 return '100-500' bucket."""
assert get_token_bucket(100) == "100-500"
assert get_token_bucket(250) == "100-500"
assert get_token_bucket(499) == "100-500"
def test_bucket_500_1k(self):
"""Test tokens 500-999 return '500-1k' bucket."""
assert get_token_bucket(500) == "500-1k"
assert get_token_bucket(750) == "500-1k"
assert get_token_bucket(999) == "500-1k"
def test_bucket_1k_5k(self):
"""Test tokens 1000-4999 return '1k-5k' bucket."""
assert get_token_bucket(1000) == "1k-5k"
assert get_token_bucket(2500) == "1k-5k"
assert get_token_bucket(4999) == "1k-5k"
def test_bucket_5k_10k(self):
"""Test tokens 5000-9999 return '5k-10k' bucket."""
assert get_token_bucket(5000) == "5k-10k"
assert get_token_bucket(7500) == "5k-10k"
assert get_token_bucket(9999) == "5k-10k"
def test_bucket_10k_50k(self):
"""Test tokens 10000-49999 return '10k-50k' bucket."""
assert get_token_bucket(10000) == "10k-50k"
assert get_token_bucket(25000) == "10k-50k"
assert get_token_bucket(49999) == "10k-50k"
def test_bucket_50k_plus(self):
"""Test tokens >= 50000 return '50k+' bucket."""
assert get_token_bucket(50000) == "50k+"
assert get_token_bucket(100000) == "50k+"
assert get_token_bucket(1000000) == "50k+"
class TestLLMMetrics:
"""Tests for LLM-specific metrics recording."""
@pytest.fixture
def mock_meter(self):
"""Create a mock meter for testing."""
meter = MagicMock()
# Create separate mocks for each histogram (operation_duration, llm_duration, http_request_duration)
histogram_mocks = [MagicMock(), MagicMock(), MagicMock()]
meter.create_histogram.side_effect = histogram_mocks
# Create separate mocks for each counter
# (operation_total, llm_tokens_input, llm_tokens_output, llm_calls_total, http_requests_total)
counter_mocks = [MagicMock() for _ in range(5)]
meter.create_counter.side_effect = counter_mocks
return meter
@pytest.fixture
def collector(self, mock_meter):
"""Create a MetricsCollector with a mock meter."""
with patch("hindsight_api.metrics.get_meter", return_value=mock_meter):
return MetricsCollector()
def test_record_llm_call_records_duration(self, collector):
"""Test that record_llm_call records duration."""
collector.record_llm_call(
provider="openai",
model="gpt-4",
scope="memory",
duration=1.5,
input_tokens=100,
output_tokens=50,
success=True,
)
# LLM duration histogram should be called
collector.llm_duration.record.assert_called_once()
call_args = collector.llm_duration.record.call_args
# First arg is duration
assert call_args[0][0] == 1.5
# Second arg is attributes dict
attributes = call_args[0][1]
assert attributes["provider"] == "openai"
assert attributes["model"] == "gpt-4"
assert attributes["scope"] == "memory"
assert attributes["success"] == "true"
def test_record_llm_call_records_failure(self, collector):
"""Test that record_llm_call records failure status."""
collector.record_llm_call(
provider="anthropic",
model="claude-3",
scope="reflect",
duration=0.5,
success=False,
)
# Check success is false
call_args = collector.llm_duration.record.call_args
attributes = call_args[0][1]
assert attributes["success"] == "false"
def test_record_llm_call_records_tokens_with_buckets(self, collector):
"""Test that record_llm_call records tokens with bucket labels."""
collector.record_llm_call(
provider="openai",
model="gpt-4",
scope="memory",
duration=1.0,
input_tokens=2500, # Should be "1k-5k" bucket
output_tokens=150, # Should be "100-500" bucket
success=True,
)
# Input tokens should be recorded with bucket
collector.llm_tokens_input.add.assert_called_once()
input_call = collector.llm_tokens_input.add.call_args
assert input_call[0][0] == 2500
assert input_call[0][1]["token_bucket"] == "1k-5k"
# Output tokens should be recorded with bucket
collector.llm_tokens_output.add.assert_called_once()
output_call = collector.llm_tokens_output.add.call_args
assert output_call[0][0] == 150
assert output_call[0][1]["token_bucket"] == "100-500"
def test_record_llm_call_skips_zero_tokens(self, collector):
"""Test that zero token values don't record."""
collector.record_llm_call(
provider="openai",
model="gpt-4",
scope="memory",
duration=1.0,
input_tokens=0,
output_tokens=0,
success=True,
)
# Token counters should not be called
collector.llm_tokens_input.add.assert_not_called()
collector.llm_tokens_output.add.assert_not_called()
def test_record_llm_call_increments_call_counter(self, collector):
"""Test that record_llm_call increments the call counter."""
collector.record_llm_call(
provider="gemini",
model="gemini-pro",
scope="memory",
duration=2.0,
success=True,
)
# Call counter should be incremented
collector.llm_calls_total.add.assert_called_once()
call_args = collector.llm_calls_total.add.call_args
assert call_args[0][0] == 1
assert call_args[0][1]["provider"] == "gemini"
assert call_args[0][1]["model"] == "gemini-pro"
assert call_args[0][1]["scope"] == "memory"
def test_record_llm_call_different_scopes(self, collector):
"""Test recording LLM calls with different scopes."""
scopes = ["memory", "reflect", "consolidation", "answer"]
for scope in scopes:
collector.llm_duration.record.reset_mock()
collector.record_llm_call(
provider="openai",
model="gpt-4",
scope=scope,
duration=1.0,
success=True,
)
call_args = collector.llm_duration.record.call_args
attributes = call_args[0][1]
assert attributes["scope"] == scope