* feat: support litellm-sdk for reranker endpoint
* feat: support litellm-sdk for reranker endpoint
* fix: make litellm SDK cohere test fixture async function-scoped
* fix: store litellm module reference during initialization to avoid import issues
* feat: add LiteLLM SDK embeddings support
- Add LiteLLMSDKEmbeddings class for direct API access without proxy
- Support multiple providers: Cohere, OpenAI, Together AI, HuggingFace, Voyage AI
- Automatic dimension detection via test embedding
- Provider-specific API key mapping
- Batch processing support (configurable batch size)
- Comprehensive test coverage (17 unit tests)
- Update documentation with configuration examples
Implements embeddings in same PR as reranker per user request
* fix: correct config mocking in embeddings factory tests
- Mock get_config() from its source module (hindsight_api.config)
- Fixes factory tests that were returning LocalSTEmbeddings instead of LiteLLMSDKEmbeddings
- All 17 unit tests now passing
* fix: skip Cohere integration tests when API key is invalid
- Catch initialization errors and skip tests instead of failing
- Prevents CI failures when COHERE_API_KEY is set but invalid
- Integration tests now properly skip when authentication fails
* fix: skip Cohere reranker integration tests when API key is invalid
- Add same error handling as embeddings tests
- Prevents CI failures when COHERE_API_KEY is set but invalid
- Tests now properly skip when authentication fails
* Revert "fix: skip Cohere reranker integration tests when API key is invalid"
This reverts commit 655dacaffb25851ff48e202b4379fc8332a66df7.
* Revert "fix: skip Cohere integration tests when API key is invalid"
This reverts commit 5d00548e39faa3da6b427ace89589a216816f9e7.
* fix: pass API key directly to litellm SDK functions
- Add api_key parameter to arerank(), rerank(), aembedding(), and embedding() calls
- Prevents authentication issues in multi-process environments (pytest-xdist)
- More reliable than relying solely on environment variables
- Update test assertions to expect api_key parameter
* feat: pass api_base parameter to litellm SDK calls and remove hasattr check
* fix: raise errors instead of silently returning 0.0 scores
* refactor: pass API keys directly in kwargs instead of setting env vars
* fix: improve model configuration for litellm gateway
* fix: add missing config imports for Cohere and LiteLLM providers
Add missing DEFAULT_* and ENV_* constants to cross_encoder.py and embeddings.py imports:
- DEFAULT_RERANKER_COHERE_MODEL
- DEFAULT_LITELLM_API_BASE
- DEFAULT_RERANKER_LITELLM_MODEL
- DEFAULT_EMBEDDINGS_COHERE_MODEL
- DEFAULT_EMBEDDINGS_LITELLM_MODEL
- ENV_RERANKER_COHERE_MODEL
This fixes NameError failures in test-api, test-hindsight-all, and test-upgrade CI jobs.
* feat: support vertex as llm provider
* fix
* fix: add uv index-strategy to resolve dependency conflicts with pytorch index
When using pytorch index for faster torch downloads in CI,
filelock dependency resolution was failing because pytorch index
only has older versions. Adding unsafe-best-match strategy allows
uv to search all configured indexes.
Also fix type checking warnings from ty.
* fix: add index-strategy to root pyproject.toml for workspace-level uv resolution
* chore: regenerate client SDKs after Vertex AI support
* fix: include correct __version__ in python packages
* fix(embed): force CPU mode for local models in daemon to prevent XPC crashes
Adds HINDSIGHT_API_EMBEDDINGS_LOCAL_FORCE_CPU and HINDSIGHT_API_RERANKER_LOCAL_FORCE_CPU
environment variables to force CPU-only operation for local sentence-transformer models.
This prevents XPC_ERROR_CONNECTION_INVALID crashes on macOS when running in daemon mode.
The issue occurs because PyTorch's MPS (Metal Performance Shaders) backend has unstable
XPC connections in background processes, leading to C++ assertion failures that Python
exception handlers cannot catch.
Changes:
- config.py: Add ENV_*_FORCE_CPU constants and config dataclass fields
- embeddings.py: Add force_cpu parameter to LocalSTEmbeddings constructor
- cross_encoder.py: Add force_cpu parameter to LocalSTCrossEncoder constructor
- main.py: Set force CPU env vars in daemon mode, add fields to config constructor
The daemon mode automatically enables force CPU for both embeddings and reranker,
while normal mode allows hardware acceleration (GPU/MPS) as before.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
* fix: add defensive error handling to PyTorch device detection
Wraps all PyTorch device detection code (torch.cuda.is_available()
and torch.backends.mps.is_available()) in try-except blocks that
gracefully fall back to CPU if any errors occur.
This complements PR #218's force_cpu configuration by ensuring the
code works reliably in all environments without configuration:
- CI environments with CPU-only PyTorch builds
- Systems without proper GPU/MPS support
- Partial or misconfigured PyTorch installations
The defensive approach prevents startup failures while still taking
advantage of GPU/MPS acceleration when available and force_cpu is
not explicitly set.
Changes:
- embeddings.py: Added try-except in initialize() and _reinitialize_model_sync()
- cross_encoder.py: Added try-except in initialize() and _reinitialize_model_sync()
* refactor: use get_config() for embeddings and reranker force_cpu
Changes create_embeddings_from_env() and create_cross_encoder_from_env()
to read configuration via get_config() instead of directly accessing
os.environ. This ensures consistency across the codebase and properly
respects the force_cpu configuration set by daemon mode.
Changes:
- embeddings.py: Use config.embeddings_local_model and config.embeddings_local_force_cpu
- cross_encoder.py: Use config.reranker_local_model and config.reranker_local_force_cpu
- Both: Use get_config() for provider, tei_url, and other config fields
- Note: Some fields not in config (like max_concurrent for local reranker) still read from os.environ
This fixes the issue where force_cpu was read inconsistently from environment
variables instead of using the centralized config system.
* test: clear config cache in test_create_from_env
Fixes test failure caused by cached config not picking up
environment variable changes in test. The test now calls
clear_config_cache() before and after patching os.environ
to ensure the factory function reads the test's env vars.
* refactor: add reranker_local_max_concurrent to config system
Adds reranker_local_max_concurrent to HindsightConfig dataclass
and removes the workaround in create_cross_encoder_from_env() that
was reading it directly from os.environ.
Changes:
- config.py: Add reranker_local_max_concurrent field to dataclass and from_env()
- main.py: Add reranker_local_max_concurrent to manual config constructor
- cross_encoder.py: Use config.reranker_local_max_concurrent instead of os.environ
This completes the refactoring to use the centralized config system
for all reranker configuration.
---------
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
Remove device_map from model_kwargs as it conflicts with CrossEncoder's
internal .to(device) call. The low_cpu_mem_usage=False setting alone is
sufficient to prevent lazy loading (meta tensors).
* fix: prevent meta tensor issues when accelerate is installed without GPU
When accelerate is installed but no GPU is available, transformers can
incorrectly use lazy loading (meta tensors) which fails when
sentence-transformers tries to move the model to a device.
The fix checks hardware and installed packages to determine the right
loading strategy:
- GPU available: device=None, device_map=None (auto-detect GPU)
- No GPU + accelerate: device='cpu', device_map='cpu' (force CPU loading)
- No GPU + no accelerate: device='cpu', device_map=None (normal CPU)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
* fix: add filelock for model initialization in parallel tests
When pytest-xdist runs multiple workers in parallel, they all try to
load models from the HuggingFace cache simultaneously, causing race
conditions and intermittent meta tensor errors.
Added filelock around embeddings and cross_encoder initialization in
conftest.py, similar to how pg0 database setup is serialized. Models
are now pre-initialized in the fixture before being passed to tests.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
* fix: add MPS support for macOS Apple Silicon
Extend GPU detection to include Apple MPS backend in addition to CUDA.
This ensures macOS users with Apple Silicon use MPS acceleration
instead of being incorrectly routed to the CPU fallback path.
* Add the LLM_PROVIDER in example
* fix the assert in testing recall
* trial to fix failing client tests
NotImplementedError: Cannot copy out of meta tensor; no data! Please use torch.nn.Module.to_empty() instead of torch.nn.Module.to() when moving module from meta to a different device.
* lock the sentence transformer packages to align with the breaking changes around lazy tensor loading
* Add the LLM_PROVIDER in example
* fix the assert in testing recall
* trial to fix failing client tests
* pre-cache the model so CI doesn't need workarounds
* remove assert that is a race condition
The test was checking that the bank count increased, but with parallel tests (-n 8), other tests can delete their banks while this test is running, causing a race condition. The important assertion is assert test_bank_id in final_banks - which verifies the bank was actually created.
* add debug to figure out why docker build fails sometimes
* use the CPU only version of pytorch to avoid pulling cuda libraries
* add best match strategy to uv
* change the example openai model
