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Chris CoutinhoandClaude Opus 4.7 665cb9b1eb refactor: convert f-string logging to lazy %-style format (G004)
Sweep all 1676 G004 violations across 112 files, converting
`logger.<level>(f"…{x}…")` to `logger.<level>("…%s…", x)`.

Why: ruff rule G004 was added to pyproject.toml to enforce lazy
%-style logging — defers formatting until the log level is enabled
and lets structured log tooling match the unformatted template.

Conversion preserves rendered output byte-for-byte:
- `{x}` → `%s` + `x`
- `{x!r}` / `{x!s}` / `{x!a}` → `%r` / `%s` / `%a`
- Format specs (`{x:.2f}`, `{x:>10}`) → `%s` + `format(x, 'spec')`
  (printf-style specs aren't 1:1 with Python format specs, so we
  delegate to `format()` to keep identical output)
- Literal `%` → `%%`
- Concatenated f-strings (`f"a {x} " "b"`) flattened
- Trailing kwargs (`exc_info=True`) preserved

Verified:
- `uv run ruff check --select G004` → 0 violations
- `uv run ty check -- nextcloud_mcp_server` → passes
- `uv run pytest tests/unit/` → 1010 passed

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:12:17 +02:00

98 lines
3.1 KiB
Python

"""BM25 sparse embedding provider using FastEmbed."""
import logging
from typing import Any
import anyio
from fastembed import SparseTextEmbedding
logger = logging.getLogger(__name__)
class BM25SparseEmbeddingProvider:
"""
BM25 sparse embedding provider for hybrid search.
Uses FastEmbed's BM25 model to generate sparse vectors for keyword-based
retrieval. These sparse vectors are combined with dense semantic vectors
in Qdrant using Reciprocal Rank Fusion (RRF) for hybrid search.
Unlike dense embeddings which have fixed dimensions, sparse embeddings
have variable-length vectors with (index, value) pairs representing
term frequencies in the BM25 vocabulary.
"""
def __init__(self, model_name: str = "Qdrant/bm25"):
"""
Initialize BM25 sparse embedding provider.
Args:
model_name: FastEmbed BM25 model name (default: Qdrant/bm25)
"""
self.model_name = model_name
logger.info("Initializing BM25 sparse embedding provider: %s", model_name)
# Initialize FastEmbed sparse embedding model
self.model = SparseTextEmbedding(model_name=model_name)
logger.info("BM25 sparse embedding model loaded: %s", model_name)
def encode(self, text: str) -> dict[str, Any]:
"""
Generate BM25 sparse embedding for a single text (synchronous).
Note: For async contexts, prefer encode_async() to avoid blocking the event loop.
Args:
text: Input text to encode
Returns:
Dictionary with 'indices' and 'values' keys for Qdrant sparse vector
"""
# FastEmbed returns a generator, take first result
sparse_embedding = next(iter(self.model.embed([text])))
return {
"indices": sparse_embedding.indices.tolist(),
"values": sparse_embedding.values.tolist(),
}
async def encode_async(self, text: str) -> dict[str, Any]:
"""
Generate BM25 sparse embedding for a single text (async).
Runs CPU-bound BM25 encoding in thread pool to avoid blocking the event loop.
Args:
text: Input text to encode
Returns:
Dictionary with 'indices' and 'values' keys for Qdrant sparse vector
"""
# Run CPU-bound BM25 encoding in thread pool
return await anyio.to_thread.run_sync(lambda: self.encode(text)) # type: ignore[attr-defined]
async def encode_batch(self, texts: list[str]) -> list[dict[str, Any]]:
"""
Generate BM25 sparse embeddings for multiple texts (batched).
Args:
texts: List of texts to encode
Returns:
List of dictionaries with 'indices' and 'values' for each text
"""
# Run CPU-bound BM25 encoding in thread pool to avoid blocking event loop
sparse_embeddings = await anyio.to_thread.run_sync( # type: ignore[attr-defined]
lambda: list(self.model.embed(texts))
)
return [
{
"indices": emb.indices.tolist(),
"values": emb.values.tolist(),
}
for emb in sparse_embeddings
]