Files
lancedb/python/tests/test_embeddings.py
Ayush Chaurasia 1589499f89 Exponential standoff retry support for handling rate limited embedding functions (#614)
Users ingesting data using rate limited apis don't need to manually make
the process sleep for counter rate limits
resolves #579
2023-11-02 19:20:10 +05:30

115 lines
3.7 KiB
Python

# Copyright 2023 LanceDB Developers
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import lance
import numpy as np
import pyarrow as pa
import pytest
import lancedb
from lancedb.conftest import MockRateLimitedEmbeddingFunction, MockTextEmbeddingFunction
from lancedb.embeddings import (
EmbeddingFunctionConfig,
EmbeddingFunctionRegistry,
with_embeddings,
)
from lancedb.pydantic import LanceModel, Vector
def mock_embed_func(input_data):
return [np.random.randn(128).tolist() for _ in range(len(input_data))]
def test_with_embeddings():
for wrap_api in [True, False]:
if wrap_api and sys.version_info.minor >= 11:
# ratelimiter package doesn't work on 3.11
continue
data = pa.Table.from_arrays(
[
pa.array(["foo", "bar"]),
pa.array([10.0, 20.0]),
],
names=["text", "price"],
)
data = with_embeddings(mock_embed_func, data, wrap_api=wrap_api)
assert data.num_columns == 3
assert data.num_rows == 2
assert data.column_names == ["text", "price", "vector"]
assert data.column("text").to_pylist() == ["foo", "bar"]
assert data.column("price").to_pylist() == [10.0, 20.0]
def test_embedding_function(tmp_path):
registry = EmbeddingFunctionRegistry.get_instance()
# let's create a table
table = pa.table(
{
"text": pa.array(["hello world", "goodbye world"]),
"vector": [np.random.randn(10), np.random.randn(10)],
}
)
conf = EmbeddingFunctionConfig(
source_column="text",
vector_column="vector",
function=MockTextEmbeddingFunction(),
)
metadata = registry.get_table_metadata([conf])
table = table.replace_schema_metadata(metadata)
# Write it to disk
lance.write_dataset(table, tmp_path / "test.lance")
# Load this back
ds = lance.dataset(tmp_path / "test.lance")
# can we get the serialized version back out?
configs = registry.parse_functions(ds.schema.metadata)
conf = configs["vector"]
func = conf.function
actual = func.compute_query_embeddings("hello world")
# And we make sure we can call it
expected = func.compute_query_embeddings("hello world")
assert np.allclose(actual, expected)
def test_embedding_function_rate_limit(tmp_path):
def _get_schema_from_model(model):
class Schema(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
return Schema
db = lancedb.connect(tmp_path)
registry = EmbeddingFunctionRegistry.get_instance()
model = registry.get("test-rate-limited").create(max_retries=0)
schema = _get_schema_from_model(model)
table = db.create_table("test", schema=schema, mode="overwrite")
table.add([{"text": "hello world"}])
with pytest.raises(Exception):
table.add([{"text": "hello world"}])
assert len(table) == 1
model = registry.get("test-rate-limited").create()
schema = _get_schema_from_model(model)
table = db.create_table("test", schema=schema, mode="overwrite")
table.add([{"text": "hello world"}])
table.add([{"text": "hello world"}])
assert len(table) == 2