Files
lancedb/python/src/connection.rs
T
Colin Patrick McCabe 631ea41a63 feat!: return lazy iterators for table and namespace listings (#4599)
Make table and namespace listings consistent with other resource
listings across Rust, Python, and TypeScript. Callers can iterate over
individual names across all pages, with configurable page sizes and
continuation tokens.

In order to avoid breaking existing Python users, this change adds some
compatibility methods to the returned Python iterators. Code such as:
```
for t in db.list_tables().tables:
    print(t)
```
will continue to work as expected because the iterator has a `tables`
field and a `page_token` field, which function as expected to reveal the
first page of results. In other words, it is never necessary to use the
iterator __as an iterator__. It may be used as if it were an old-style
response object. (As the iterator progresses, the `tables` list may
switch to the second, third, etc. page of results.) Similar
compatibility code allows the async python API to keep working as well.
2026-10-22 15:41:30 -07:00

1361 lines
49 KiB
Rust

// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright The LanceDB Authors
use std::{
collections::{HashMap, HashSet},
sync::Arc,
time::Duration,
};
use crate::{
error::PythonErrorExt,
namespace::{create_namespace_storage_options_provider, extract_namespace_arc},
runtime::future_into_py,
table::Table,
};
use arrow::{
array::RecordBatch,
datatypes::Schema,
ffi_stream::ArrowArrayStreamReader,
pyarrow::{FromPyArrow, PyArrowType, ToPyArrow},
};
use lancedb::{
connection::Connection as LanceConnection,
connection::NamespaceClientPushdownOperation,
database::namespace::LanceNamespaceDatabase,
database::{CreateTableMode, Database, ReadConsistency},
};
use pyo3::{
Bound, FromPyObject, Py, PyAny, PyRef, PyResult, Python,
exceptions::{PyRuntimeError, PyValueError},
pyclass, pyfunction, pymethods,
types::{PyAnyMethods, PyDict, PyDictMethods, PyList},
};
#[pyclass]
pub struct Connection {
inner: Option<LanceConnection>,
}
impl Connection {
pub(crate) fn new(inner: LanceConnection) -> Self {
Self { inner: Some(inner) }
}
pub(crate) fn get_inner(&self) -> PyResult<&LanceConnection> {
self.inner
.as_ref()
.ok_or_else(|| PyRuntimeError::new_err("Connection is closed"))
}
}
fn parse_read_consistency_interval(interval: Option<f64>) -> PyResult<Option<Duration>> {
interval
.map(|seconds| {
Duration::try_from_secs_f64(seconds).map_err(|_| {
PyValueError::new_err(
"read_consistency_interval must be finite, non-negative, and within the supported range",
)
})
})
.transpose()
}
fn parse_namespace_client_pushdown_operations(
operations: Option<Vec<String>>,
) -> PyResult<HashSet<NamespaceClientPushdownOperation>> {
let mut parsed = HashSet::new();
for operation in operations.unwrap_or_default() {
match operation.as_str() {
"QueryTable" => {
parsed.insert(NamespaceClientPushdownOperation::QueryTable);
}
"CreateTable" => {
parsed.insert(NamespaceClientPushdownOperation::CreateTable);
}
_ => {
return Err(PyValueError::new_err(format!(
"Invalid pushdown operation: {}",
operation
)));
}
}
}
Ok(parsed)
}
impl Connection {
fn parse_create_mode_str(mode: &str) -> PyResult<CreateTableMode> {
match mode {
"create" => Ok(CreateTableMode::Create),
"overwrite" => Ok(CreateTableMode::Overwrite),
"exist_ok" => Ok(CreateTableMode::exist_ok(|builder| builder)),
_ => Err(PyValueError::new_err(format!("Invalid mode {}", mode))),
}
}
pub fn database(&self) -> PyResult<Arc<dyn Database>> {
Ok(self.get_inner()?.database().clone())
}
}
fn parse_default_namespace_path(path: Option<Bound<'_, PyAny>>) -> PyResult<Vec<String>> {
match path {
Some(path) => {
if !path.is_instance_of::<PyList>() {
return Err(PyValueError::new_err(
"Connection.execute_query_async default_namespace_path must be a list",
));
}
path.extract::<Vec<String>>().map_err(|_| {
PyValueError::new_err(
"Connection.execute_query_async default_namespace_path components must be strings",
)
})
}
None => Ok(vec!["public".to_string()]),
}
}
/// A view description on its way to Python: name, namespace, query, default
/// database, and the schema as pyarrow renders it.
type PyViewDescription = (String, Vec<String>, String, String, Vec<String>, Py<PyAny>);
/// A view description as a plain tuple, with the schema converted to the
/// pyarrow schema the caller would get from any other lancedb API. The Python
/// layer names the fields; this keeps the binding free of a class that would
/// have to be kept in step with the Rust struct.
fn view_description_to_py(view: lancedb::view::ViewDescription) -> PyResult<PyViewDescription> {
Python::attach(|py| {
let schema = view.schema.to_pyarrow(py)?.unbind();
Ok((
view.name,
view.namespace_path,
view.query,
view.default_database,
view.default_namespace_path,
schema,
))
})
}
#[pymethods]
impl Connection {
fn __repr__(&self) -> String {
match &self.inner {
Some(inner) => inner.to_string(),
None => "ClosedConnection".to_string(),
}
}
fn is_open(&self) -> bool {
self.inner.is_some()
}
fn close(&mut self) {
self.inner.take();
}
#[getter]
pub fn uri(&self) -> PyResult<String> {
self.get_inner().map(|inner| inner.uri().to_string())
}
#[pyo3(signature = (query, *, default_namespace_path=None, parameters=None))]
pub fn execute_query_async<'a>(
self_: PyRef<'a, Self>,
query: String,
default_namespace_path: Option<Bound<'_, PyAny>>,
parameters: Option<PyArrowType<RecordBatch>>,
) -> PyResult<Bound<'a, PyAny>> {
let inner = self_.get_inner()?.clone();
let default_namespace_path = parse_default_namespace_path(default_namespace_path)?;
future_into_py(self_.py(), async move {
let mut operation = inner
.execute_query_async(query)
.default_namespace_path(default_namespace_path);
if let Some(PyArrowType(parameters)) = parameters {
operation = operation.parameters(parameters);
}
operation
.execute()
.await
.map(crate::sql::Query::new)
.infer_error()
})
}
pub fn describe_query<'a>(
self_: PyRef<'a, Self>,
query_id: uuid::Uuid,
) -> PyResult<Bound<'a, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
inner
.describe_query(query_id)
.await
.map(crate::sql::QueryDescription::from)
.infer_error()
})
}
#[pyo3(signature = ())]
pub fn get_read_consistency_interval(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
Ok(match inner.read_consistency().await.infer_error()? {
ReadConsistency::Manual => None,
ReadConsistency::Eventual(duration) => Some(duration.as_secs_f64()),
ReadConsistency::Strong => Some(0.0_f64),
})
})
}
#[pyo3(signature = (namespace_path=None, start_after=None, limit=None))]
pub fn table_names(
self_: PyRef<'_, Self>,
namespace_path: Option<Vec<String>>,
start_after: Option<String>,
limit: Option<u32>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let mut op = inner.table_names();
op = op.namespace(namespace_path.unwrap_or_default());
if let Some(start_after) = start_after {
op = op.start_after(start_after);
}
if let Some(limit) = limit {
op = op.limit(limit);
}
future_into_py(self_.py(), async move { op.execute().await.infer_error() })
}
#[allow(clippy::too_many_arguments)]
#[pyo3(signature = (name, mode, data, namespace_path=None, storage_options=None, location=None, namespace_client=None))]
pub fn create_table<'a>(
self_: PyRef<'a, Self>,
name: String,
mode: &str,
data: Bound<'_, PyAny>,
namespace_path: Option<Vec<String>>,
storage_options: Option<HashMap<String, String>>,
location: Option<String>,
namespace_client: Option<Py<PyAny>>,
) -> PyResult<Bound<'a, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
let mode = Self::parse_create_mode_str(mode)?;
let batches: Box<dyn arrow::array::RecordBatchReader + Send> =
Box::new(ArrowArrayStreamReader::from_pyarrow_bound(&data)?);
let ns_path = namespace_path.clone().unwrap_or_default();
let mut builder = inner.create_table(name.clone(), batches).mode(mode);
builder = builder.namespace(ns_path.clone());
if let Some(storage_options) = storage_options {
builder = builder.storage_options(storage_options);
}
// Auto-create storage options provider from namespace_client
if let Some(ns_obj) = namespace_client {
let ns_client = extract_namespace_arc(py, ns_obj)?;
// Create table_id by combining namespace_path with table name
let mut table_id = ns_path;
table_id.push(name);
let provider = create_namespace_storage_options_provider(ns_client, table_id);
builder = builder.storage_options_provider(provider);
}
if let Some(location) = location {
builder = builder.location(location);
}
future_into_py(self_.py(), async move {
let table = builder.execute().await.infer_error()?;
Ok(Table::new(table))
})
}
#[allow(clippy::too_many_arguments)]
#[pyo3(signature = (name, mode, schema, namespace_path=None, storage_options=None, location=None, namespace_client=None))]
pub fn create_empty_table<'a>(
self_: PyRef<'a, Self>,
name: String,
mode: &str,
schema: Bound<'_, PyAny>,
namespace_path: Option<Vec<String>>,
storage_options: Option<HashMap<String, String>>,
location: Option<String>,
namespace_client: Option<Py<PyAny>>,
) -> PyResult<Bound<'a, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
let mode = Self::parse_create_mode_str(mode)?;
let schema = Schema::from_pyarrow_bound(&schema)?;
let ns_path = namespace_path.clone().unwrap_or_default();
let mut builder = inner
.create_empty_table(name.clone(), Arc::new(schema))
.mode(mode);
builder = builder.namespace(ns_path.clone());
if let Some(storage_options) = storage_options {
builder = builder.storage_options(storage_options);
}
// Auto-create storage options provider from namespace_client
if let Some(ns_obj) = namespace_client {
let ns_client = extract_namespace_arc(py, ns_obj)?;
// Create table_id by combining namespace_path with table name
let mut table_id = ns_path;
table_id.push(name);
let provider = create_namespace_storage_options_provider(ns_client, table_id);
builder = builder.storage_options_provider(provider);
}
if let Some(location) = location {
builder = builder.location(location);
}
future_into_py(self_.py(), async move {
let table = builder.execute().await.infer_error()?;
Ok(Table::new(table))
})
}
#[allow(clippy::too_many_arguments)]
#[pyo3(signature = (name, namespace_path=None, storage_options=None, index_cache_size=None, location=None, namespace_client=None, managed_versioning=None))]
pub fn open_table(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
storage_options: Option<HashMap<String, String>>,
index_cache_size: Option<u32>,
location: Option<String>,
namespace_client: Option<Py<PyAny>>,
managed_versioning: Option<bool>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
let ns_path = namespace_path.clone().unwrap_or_default();
let mut builder = inner.open_table(name.clone());
builder = builder.namespace(ns_path.clone());
if let Some(storage_options) = storage_options {
builder = builder.storage_options(storage_options);
}
// Auto-create storage options provider from namespace_client
if let Some(ns_obj) = namespace_client {
let ns_client = extract_namespace_arc(py, ns_obj)?;
// Create table_id by combining namespace_path with table name
let mut table_id = ns_path;
table_id.push(name);
let provider = create_namespace_storage_options_provider(ns_client.clone(), table_id);
builder = builder.storage_options_provider(provider);
builder = builder.namespace_client(ns_client);
}
if let Some(index_cache_size) = index_cache_size {
builder = builder.index_cache_size(index_cache_size);
}
if let Some(location) = location {
builder = builder.location(location);
}
// Pass managed_versioning if provided to avoid redundant describe_table call
if let Some(enabled) = managed_versioning {
builder = builder.managed_versioning(enabled);
}
future_into_py(self_.py(), async move {
let table = builder.execute().await.infer_error()?;
Ok(Table::new(table))
})
}
#[pyo3(signature = (target_table_name, source_uri, target_namespace_path=None, source_version=None, source_tag=None, is_shallow=true))]
pub fn clone_table(
self_: PyRef<'_, Self>,
target_table_name: String,
source_uri: String,
target_namespace_path: Option<Vec<String>>,
source_version: Option<u64>,
source_tag: Option<String>,
is_shallow: bool,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let mut builder = inner.clone_table(target_table_name, source_uri);
builder = builder.target_namespace(target_namespace_path.unwrap_or_default());
if let Some(version) = source_version {
builder = builder.source_version(version);
}
if let Some(tag) = source_tag {
builder = builder.source_tag(tag);
}
builder = builder.is_shallow(is_shallow);
future_into_py(self_.py(), async move {
let table = builder.execute().await.infer_error()?;
Ok(Table::new(table))
})
}
#[pyo3(signature = (cur_name, new_name, cur_namespace_path=None, new_namespace_path=None))]
pub fn rename_table(
self_: PyRef<'_, Self>,
cur_name: String,
new_name: String,
cur_namespace_path: Option<Vec<String>>,
new_namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let cur_ns_path = cur_namespace_path.unwrap_or_default();
let new_ns_path = new_namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.rename_table(cur_name, new_name, &cur_ns_path, &new_ns_path)
.await
.infer_error()
})
}
#[allow(clippy::too_many_arguments)]
#[pyo3(signature = (name, source, projections=None, filter=None, limit=None, with_no_data=false, auto_refresh_enabled=None, auto_refresh_interval_seconds=None))]
pub fn create_materialized_view(
self_: PyRef<'_, Self>,
name: String,
source: String,
projections: Option<Vec<(String, String)>>,
filter: Option<String>,
limit: Option<u64>,
with_no_data: bool,
auto_refresh_enabled: Option<bool>,
auto_refresh_interval_seconds: Option<f64>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
let mut builder = inner.create_materialized_view(name, source);
if let Some(enabled) = auto_refresh_enabled {
builder = builder.auto_refresh_enabled(enabled);
}
if let Some(seconds) = auto_refresh_interval_seconds {
builder = builder.auto_refresh_interval_seconds(seconds);
}
if let Some(projections) = projections {
builder = builder.select(projections);
}
if let Some(filter) = filter {
builder = builder.only_if(filter);
}
if let Some(limit) = limit {
builder = builder.limit(limit);
}
builder = builder.with_no_data(with_no_data);
let view = Box::pin(builder.execute()).await.infer_error()?;
Ok(Table::new(view.table().clone()))
})
}
#[allow(clippy::too_many_arguments)]
#[pyo3(signature = (name, source, projections=None, filter=None, limit=None, with_no_data=false, auto_refresh_enabled=None, auto_refresh_interval_seconds=None))]
pub fn create_materialized_view_async(
self_: PyRef<'_, Self>,
name: String,
source: String,
projections: Option<Vec<(String, String)>>,
filter: Option<String>,
limit: Option<u64>,
with_no_data: bool,
auto_refresh_enabled: Option<bool>,
auto_refresh_interval_seconds: Option<f64>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
let mut builder = inner.create_materialized_view(name, source);
if let Some(enabled) = auto_refresh_enabled {
builder = builder.auto_refresh_enabled(enabled);
}
if let Some(seconds) = auto_refresh_interval_seconds {
builder = builder.auto_refresh_interval_seconds(seconds);
}
if let Some(projections) = projections {
builder = builder.select(projections);
}
if let Some(filter) = filter {
builder = builder.only_if(filter);
}
if let Some(limit) = limit {
builder = builder.limit(limit);
}
let job = Box::pin(builder.with_no_data(with_no_data).execute_async())
.await
.infer_error()?;
Ok(crate::job::Job::new(job))
})
}
#[pyo3(signature = (*, page_token=None, page_limit=None))]
pub fn list_materialized_views(
&self,
page_token: Option<String>,
page_limit: Option<u32>,
) -> PyResult<crate::listing::NameListing> {
Ok(crate::listing::NameListing::new(
self.get_inner()?
.list_materialized_views(crate::listing::options(page_token, page_limit)),
))
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_materialized_view(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_materialized_view(name, &namespace_path)
.await
.infer_error()
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_materialized_view_async(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_materialized_view_async(name, &namespace_path)
.await
.infer_error()
.map(crate::job::Job::new)
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_table(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let ns_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner.drop_table(name, &ns_path).await.infer_error()
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_table_async(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let ns_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_table_async(name, &ns_path)
.await
.infer_error()
.map(crate::job::Job::new)
})
}
#[pyo3(signature = (namespace_path=None,))]
pub fn drop_all_tables(
self_: PyRef<'_, Self>,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let ns_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner.drop_all_tables(&ns_path).await.infer_error()
})
}
// Namespace management methods
#[pyo3(signature = (namespace_path=None, page_token=None, limit=None))]
pub fn list_namespaces(
&self,
namespace_path: Option<Vec<String>>,
page_token: Option<String>,
limit: Option<u32>,
) -> PyResult<crate::listing::NameListing> {
Ok(crate::listing::NameListing::new(
self.get_inner()?.list_namespaces(
&namespace_path.unwrap_or_default(),
crate::listing::options(page_token, limit),
),
))
}
#[pyo3(signature = (namespace_path, mode=None, properties=None))]
pub fn create_namespace(
self_: PyRef<'_, Self>,
namespace_path: Vec<String>,
mode: Option<String>,
properties: Option<std::collections::HashMap<String, String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
future_into_py(py, async move {
use lance_namespace::models::CreateNamespaceRequest;
// Mode is now a string field
let mode_str = mode
.map(|m| match m.to_lowercase().as_str() {
"create" => Ok("Create".to_string()),
"exist_ok" => Ok("ExistOk".to_string()),
"overwrite" => Ok("Overwrite".to_string()),
_ => Err(PyValueError::new_err(format!(
"Invalid mode {:?}: expected one of 'create', 'exist_ok', 'overwrite'",
m
))),
})
.transpose()?;
let request = CreateNamespaceRequest {
id: Some(namespace_path),
mode: mode_str,
properties,
..Default::default()
};
let response = inner.create_namespace(request).await.infer_error()?;
Python::attach(|py| -> PyResult<Py<PyDict>> {
let dict = PyDict::new(py);
dict.set_item("properties", response.properties)?;
Ok(dict.unbind())
})
})
}
#[pyo3(signature = (namespace_path, mode=None, behavior=None))]
pub fn drop_namespace(
self_: PyRef<'_, Self>,
namespace_path: Vec<String>,
mode: Option<String>,
behavior: Option<String>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
future_into_py(py, async move {
use lance_namespace::models::DropNamespaceRequest;
// Mode and Behavior are now string fields
let mode_str = mode
.map(|m| match m.to_uppercase().as_str() {
"SKIP" => Ok("Skip".to_string()),
"FAIL" => Ok("Fail".to_string()),
_ => Err(PyValueError::new_err(format!(
"Invalid mode {:?}: expected one of 'skip', 'fail'",
m
))),
})
.transpose()?;
let behavior_str = behavior
.map(|b| match b.to_uppercase().as_str() {
"RESTRICT" => Ok("Restrict".to_string()),
"CASCADE" => Ok("Cascade".to_string()),
_ => Err(PyValueError::new_err(format!(
"Invalid behavior {:?}: expected one of 'restrict', 'cascade'",
b
))),
})
.transpose()?;
let request = DropNamespaceRequest {
id: Some(namespace_path),
mode: mode_str,
behavior: behavior_str,
..Default::default()
};
let response = inner.drop_namespace(request).await.infer_error()?;
Python::attach(|py| -> PyResult<Py<PyDict>> {
let dict = PyDict::new(py);
dict.set_item("properties", response.properties)?;
dict.set_item("transaction_id", response.transaction_id)?;
Ok(dict.unbind())
})
})
}
#[pyo3(signature = (namespace_path,))]
pub fn describe_namespace(
self_: PyRef<'_, Self>,
namespace_path: Vec<String>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
future_into_py(py, async move {
use lance_namespace::models::DescribeNamespaceRequest;
let request = DescribeNamespaceRequest {
id: Some(namespace_path),
..Default::default()
};
let response = inner.describe_namespace(request).await.infer_error()?;
Python::attach(|py| -> PyResult<Py<PyDict>> {
let dict = PyDict::new(py);
dict.set_item("properties", response.properties)?;
Ok(dict.unbind())
})
})
}
#[pyo3(signature = (namespace_path=None, page_token=None, limit=None))]
pub fn list_tables(
&self,
namespace_path: Option<Vec<String>>,
page_token: Option<String>,
limit: Option<u32>,
) -> PyResult<crate::listing::NameListing> {
Ok(crate::listing::NameListing::new(
self.get_inner()?.list_tables(
&namespace_path.unwrap_or_default(),
crate::listing::options(page_token, limit),
),
))
}
/// Get the configuration for constructing an equivalent namespace client.
/// Returns a dict with:
/// - "impl": "dir" for DirectoryNamespace, "rest" for RestNamespace
/// - "properties": configuration properties for the namespace
#[pyo3(signature = ())]
pub fn namespace_client_config(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let py = self_.py();
future_into_py(py, async move {
let (impl_type, properties) = inner.namespace_client_config().await.infer_error()?;
Python::attach(|py| -> PyResult<Py<PyDict>> {
let dict = PyDict::new(py);
dict.set_item("impl", impl_type)?;
dict.set_item("properties", properties)?;
Ok(dict.unbind())
})
})
}
pub fn open_job(self_: PyRef<'_, Self>, job_id: String) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
let job = inner.open_job(&job_id).await.infer_error()?;
Ok(crate::job::Job::new(job))
})
}
#[pyo3(signature = (request_json, namespace_path=None))]
pub fn create_function_async(
self_: PyRef<'_, Self>,
request_json: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let request = lancedb::function::FunctionRegistrationRequest::from_json(&request_json)
.infer_error()?;
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.create_function_async(request, &namespace_path)
.await
.infer_error()
.map(crate::job::Job::new_typed)
})
}
#[pyo3(signature = (name, version, namespace_path=None))]
pub fn get_function(
self_: PyRef<'_, Self>,
name: String,
version: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.get_function(name, version, &namespace_path)
.await
.infer_error()?
.to_canonical_json()
.infer_error()
})
}
#[pyo3(signature = (namespace_path=None, *, page_token=None, page_limit=None))]
pub fn list_functions(
&self,
namespace_path: Option<Vec<String>>,
page_token: Option<String>,
page_limit: Option<u32>,
) -> PyResult<crate::listing::FunctionListing> {
Ok(crate::listing::FunctionListing::new(
self.get_inner()?.list_functions(
&namespace_path.unwrap_or_default(),
crate::listing::options(page_token, page_limit),
),
))
}
#[pyo3(signature = (name, version, namespace_path=None))]
pub fn drop_function(
self_: PyRef<'_, Self>,
name: String,
version: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_function(name, version, &namespace_path)
.await
.infer_error()
})
}
#[pyo3(signature = (name, version, namespace_path=None))]
pub fn drop_function_async(
self_: PyRef<'_, Self>,
name: String,
version: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_function_async(name, version, &namespace_path)
.await
.infer_error()
.map(|(dropped, job)| (dropped, crate::job::Job::new(job)))
})
}
#[pyo3(signature = (name, value, namespace_path=None))]
pub fn create_secret(
self_: PyRef<'_, Self>,
name: String,
value: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.create_secret(name, value, &namespace_path)
.await
.infer_error()
})
}
#[pyo3(signature = (name, value, namespace_path=None))]
pub fn alter_secret(
self_: PyRef<'_, Self>,
name: String,
value: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.alter_secret(name, value, &namespace_path)
.await
.infer_error()
})
}
#[pyo3(signature = (namespace_path=None, *, page_token=None, page_limit=None))]
pub fn list_secrets(
&self,
namespace_path: Option<Vec<String>>,
page_token: Option<String>,
page_limit: Option<u32>,
) -> PyResult<crate::listing::NameListing> {
Ok(crate::listing::NameListing::new(
self.get_inner()?.list_secrets(
&namespace_path.unwrap_or_default(),
crate::listing::options(page_token, page_limit),
),
))
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_secret(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner.drop_secret(name, &namespace_path).await.infer_error()
})
}
/// Name and timestamps as a plain tuple. `SecretInfo` carries no value, so
/// there is none to filter out here. Timestamps stay integers rather than
/// going through a string, so the caller can compare two without parsing.
#[pyo3(signature = (name, namespace_path=None))]
pub fn describe_secret(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
let info = inner
.describe_secret(name, &namespace_path)
.await
.infer_error()?;
Ok((info.name, info.created_at_millis, info.updated_at_millis))
})
}
#[pyo3(signature = (name, query, namespace_path=None))]
pub fn create_view(
self_: PyRef<'_, Self>,
name: String,
query: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
let view = inner
.create_view(name, query, &namespace_path)
.await
.infer_error()?;
view_description_to_py(view)
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn describe_view(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
let view = inner
.describe_view(name, &namespace_path)
.await
.infer_error()?;
view_description_to_py(view)
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_view(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner.drop_view(name, &namespace_path).await.infer_error()
})
}
#[pyo3(signature = (name, namespace_path=None))]
pub fn drop_view_async(
self_: PyRef<'_, Self>,
name: String,
namespace_path: Option<Vec<String>>,
) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
let namespace_path = namespace_path.unwrap_or_default();
future_into_py(self_.py(), async move {
inner
.drop_view_async(name, &namespace_path)
.await
.infer_error()
.map(crate::job::Job::new)
})
}
#[pyo3(signature = (namespace_path=None, *, page_token=None, page_limit=None))]
pub fn list_views(
&self,
namespace_path: Option<Vec<String>>,
page_token: Option<String>,
page_limit: Option<u32>,
) -> PyResult<crate::listing::NameListing> {
Ok(crate::listing::NameListing::new(
self.get_inner()?.list_views(
&namespace_path.unwrap_or_default(),
crate::listing::options(page_token, page_limit),
),
))
}
#[pyo3(signature = (*, page_token=None, page_limit=None))]
pub fn list_jobs(
&self,
page_token: Option<String>,
page_limit: Option<u32>,
) -> PyResult<crate::listing::JobListing> {
Ok(crate::listing::JobListing::new(
self.get_inner()?
.list_jobs(crate::listing::options(page_token, page_limit)),
))
}
pub fn cancel_job(self_: PyRef<'_, Self>, job_id: String) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
inner.cancel_job(&job_id).await.infer_error()
})
}
pub fn pause_job(self_: PyRef<'_, Self>, job_id: String) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
let status = inner.pause_job(&job_id).await.infer_error()?;
Ok(match status {
lancedb::database::PauseJobStatus::Pausing => "pausing",
lancedb::database::PauseJobStatus::AlreadyPaused => "already_paused",
lancedb::database::PauseJobStatus::Committing => "committing",
})
})
}
pub fn resume_job(self_: PyRef<'_, Self>, job_id: String) -> PyResult<Bound<'_, PyAny>> {
let inner = self_.get_inner()?.clone();
future_into_py(self_.py(), async move {
let status = inner.resume_job(&job_id).await.infer_error()?;
Ok(match status {
lancedb::database::ResumeJobStatus::Resumed => "resumed",
lancedb::database::ResumeJobStatus::StillPausing => "still_pausing",
lancedb::database::ResumeJobStatus::NotPaused => "not_paused",
})
})
}
}
#[pyfunction]
#[pyo3(signature = (uri, api_key=None, region=None, host_override=None, sql_host_override=None, read_consistency_interval=None, client_config=None, storage_options=None, session=None, manifest_enabled=false, namespace_client_properties=None, oauth_config=None))]
#[allow(clippy::too_many_arguments)]
pub fn connect(
py: Python<'_>,
uri: String,
api_key: Option<String>,
region: Option<String>,
host_override: Option<String>,
sql_host_override: Option<String>,
read_consistency_interval: Option<f64>,
client_config: Option<PyClientConfig>,
storage_options: Option<HashMap<String, String>>,
session: Option<crate::session::Session>,
manifest_enabled: bool,
namespace_client_properties: Option<HashMap<String, String>>,
oauth_config: Option<crate::oauth::PyOAuthConfig>,
) -> PyResult<Bound<'_, PyAny>> {
let read_consistency_interval = parse_read_consistency_interval(read_consistency_interval)?;
future_into_py(py, async move {
let mut builder = lancedb::connect(&uri);
if let Some(api_key) = api_key {
builder = builder.api_key(&api_key);
}
if let Some(region) = region {
builder = builder.region(&region);
}
if let Some(host_override) = host_override {
builder = builder.host_override(&host_override);
}
#[cfg(feature = "remote")]
if let Some(sql_host_override) = sql_host_override {
builder = builder.sql_host_override(&sql_host_override);
}
#[cfg(not(feature = "remote"))]
let _ = sql_host_override;
if let Some(read_consistency_interval) = read_consistency_interval {
builder = builder.read_consistency_interval(read_consistency_interval);
}
if let Some(storage_options) = storage_options {
builder = builder.storage_options(storage_options);
}
if manifest_enabled {
builder = builder.manifest_enabled(true);
}
if let Some(namespace_client_properties) = namespace_client_properties {
builder = builder.namespace_client_properties(namespace_client_properties);
}
#[cfg(feature = "remote")]
if let Some(client_config) = client_config {
builder = builder.client_config(client_config.into());
}
if let Some(oauth_config) = oauth_config {
let config: lancedb::remote::oauth::OAuthConfig =
oauth_config.try_into().infer_error()?;
builder = builder.oauth_config(config);
}
if let Some(session) = session {
builder = builder.session(session.inner.clone());
}
Ok(Connection::new(builder.execute().await.infer_error()?))
})
}
#[pyfunction]
#[pyo3(signature = (
namespace_client,
read_consistency_interval=None,
storage_options=None,
session=None,
namespace_client_pushdown_operations=None,
namespace_client_impl=None,
namespace_client_properties=None,
))]
#[allow(clippy::too_many_arguments)]
pub fn connect_namespace_client(
py: Python<'_>,
namespace_client: Py<PyAny>,
read_consistency_interval: Option<f64>,
storage_options: Option<HashMap<String, String>>,
session: Option<crate::session::Session>,
namespace_client_pushdown_operations: Option<Vec<String>>,
namespace_client_impl: Option<String>,
namespace_client_properties: Option<HashMap<String, String>>,
) -> PyResult<Connection> {
let read_consistency_interval = parse_read_consistency_interval(read_consistency_interval)?;
let namespace_client_pushdown_operations =
parse_namespace_client_pushdown_operations(namespace_client_pushdown_operations)?;
let ns_properties = namespace_client_properties.unwrap_or_default();
let storage_options = storage_options.unwrap_or_default();
let session = session.map(|s| s.inner.clone());
// Prefer building the namespace natively from (impl, properties) so the
// read-freshness provider installed
let database = if build_namespace_natively(namespace_client_impl.as_deref(), &ns_properties) {
let ns_impl = namespace_client_impl.expect("impl present per build_namespace_natively");
crate::runtime::block_on(LanceNamespaceDatabase::connect(
&ns_impl,
ns_properties,
storage_options,
read_consistency_interval,
session,
namespace_client_pushdown_operations,
))
.infer_error()?
} else {
let namespace_client = extract_namespace_arc(py, namespace_client)?;
LanceNamespaceDatabase::from_namespace_client(
namespace_client,
namespace_client_impl.unwrap_or_else(|| "python".to_string()),
ns_properties,
storage_options,
read_consistency_interval,
session,
namespace_client_pushdown_operations,
)
};
Ok(Connection::new(LanceConnection::new(
Arc::new(database),
Arc::new(lancedb::embeddings::MemoryRegistry::new()),
)))
}
#[pyfunction]
#[pyo3(signature = (
namespace_client_impl,
namespace_client_properties,
read_consistency_interval=None,
storage_options=None,
session=None,
namespace_client_pushdown_operations=None,
))]
#[allow(clippy::too_many_arguments)]
pub fn connect_namespace(
namespace_client_impl: String,
namespace_client_properties: HashMap<String, String>,
read_consistency_interval: Option<f64>,
storage_options: Option<HashMap<String, String>>,
session: Option<crate::session::Session>,
namespace_client_pushdown_operations: Option<Vec<String>>,
) -> PyResult<Connection> {
let read_consistency_interval = parse_read_consistency_interval(read_consistency_interval)?;
let namespace_client_pushdown_operations =
parse_namespace_client_pushdown_operations(namespace_client_pushdown_operations)?;
let mut builder =
lancedb::connect_namespace(&namespace_client_impl, namespace_client_properties)
.pushdown_operations(namespace_client_pushdown_operations);
if let Some(storage_options) = storage_options {
builder = builder.storage_options(storage_options);
}
if let Some(read_consistency_interval) = read_consistency_interval {
builder = builder.read_consistency_interval(read_consistency_interval);
}
if let Some(session) = session {
builder = builder.session(session.inner.clone());
}
Ok(Connection::new(
crate::runtime::block_on(builder.execute()).infer_error()?,
))
}
/// Whether to build the namespace natively (from impl + properties) instead of
/// wrapping a pre-built client. Native construction is required for the
/// read-freshness provider to be installed
fn build_namespace_natively(
namespace_client_impl: Option<&str>,
namespace_client_properties: &HashMap<String, String>,
) -> bool {
matches!(namespace_client_impl, Some("rest")) && !namespace_client_properties.is_empty()
}
#[derive(FromPyObject)]
pub struct PyClientConfig {
user_agent: String,
retry_config: Option<PyClientRetryConfig>,
timeout_config: Option<PyClientTimeoutConfig>,
blob_request_concurrency: Option<usize>,
extra_headers: Option<HashMap<String, String>>,
id_delimiter: Option<String>,
tls_config: Option<PyClientTlsConfig>,
header_provider: Option<Py<PyAny>>,
user_id: Option<String>,
}
#[derive(FromPyObject)]
pub struct PyClientRetryConfig {
retries: Option<u8>,
connect_retries: Option<u8>,
read_retries: Option<u8>,
backoff_factor: Option<f32>,
backoff_jitter: Option<f32>,
statuses: Option<Vec<u16>>,
}
#[derive(FromPyObject)]
pub struct PyClientTimeoutConfig {
timeout: Option<Duration>,
connect_timeout: Option<Duration>,
read_timeout: Option<Duration>,
pool_idle_timeout: Option<Duration>,
}
#[derive(FromPyObject)]
pub struct PyClientTlsConfig {
cert_file: Option<String>,
key_file: Option<String>,
ssl_ca_cert: Option<String>,
assert_hostname: bool,
}
#[cfg(feature = "remote")]
impl From<PyClientRetryConfig> for lancedb::remote::RetryConfig {
fn from(value: PyClientRetryConfig) -> Self {
Self {
retries: value.retries,
connect_retries: value.connect_retries,
read_retries: value.read_retries,
backoff_factor: value.backoff_factor,
backoff_jitter: value.backoff_jitter,
statuses: value.statuses,
}
}
}
#[cfg(feature = "remote")]
impl From<PyClientTimeoutConfig> for lancedb::remote::TimeoutConfig {
fn from(value: PyClientTimeoutConfig) -> Self {
Self {
timeout: value.timeout,
connect_timeout: value.connect_timeout,
read_timeout: value.read_timeout,
pool_idle_timeout: value.pool_idle_timeout,
}
}
}
#[cfg(feature = "remote")]
impl From<PyClientTlsConfig> for lancedb::remote::TlsConfig {
fn from(value: PyClientTlsConfig) -> Self {
Self {
cert_file: value.cert_file,
key_file: value.key_file,
ssl_ca_cert: value.ssl_ca_cert,
assert_hostname: value.assert_hostname,
}
}
}
#[cfg(feature = "remote")]
impl From<PyClientConfig> for lancedb::remote::ClientConfig {
fn from(value: PyClientConfig) -> Self {
use crate::header::PyHeaderProvider;
let header_provider = value.header_provider.map(|provider| {
let py_provider = PyHeaderProvider::new(provider);
Arc::new(py_provider) as Arc<dyn lancedb::remote::HeaderProvider>
});
Self {
user_agent: value.user_agent,
retry_config: value.retry_config.map(Into::into).unwrap_or_default(),
timeout_config: value.timeout_config.map(Into::into).unwrap_or_default(),
blob_request_concurrency: value.blob_request_concurrency,
extra_headers: value.extra_headers.unwrap_or_default(),
id_delimiter: value.id_delimiter,
tls_config: value.tls_config.map(Into::into),
header_provider,
user_id: value.user_id,
// Resolved from LANCE_CLIENT_MAX_BYTES_PER_REQUEST or the default.
max_bytes_per_request: None,
// Resolved from LANCE_CLIENT_MAX_REQUEST_DURATION or the read timeout.
max_request_duration: None,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
fn props(pairs: &[(&str, &str)]) -> HashMap<String, String> {
pairs
.iter()
.map(|(k, v)| (k.to_string(), v.to_string()))
.collect()
}
#[test]
fn native_build_only_for_rest_with_properties() {
let rest = props(&[("uri", "http://localhost:10024")]);
// rest + non-empty properties -> build natively (installs the
// read-freshness provider so checkout_latest() busts the server cache).
assert!(build_namespace_natively(Some("rest"), &rest));
// dir is local (no server cache) -> wrap the pre-built client unchanged.
assert!(!build_namespace_natively(
Some("dir"),
&props(&[("root", "/tmp")])
));
// No impl: only a pre-built client was handed in -> wrap it as-is.
assert!(!build_namespace_natively(None, &rest));
// rest but no properties: nothing to build a connection from -> wrap.
assert!(!build_namespace_natively(Some("rest"), &HashMap::new()));
}
}