tbar4 commented on code in PR #1100:
URL:
https://github.com/apache/datafusion-ballista/pull/1100#discussion_r1845812081
##########
python/src/lib.rs:
##########
@@ -15,18 +15,107 @@
// specific language governing permissions and limitations
// under the License.
+use ballista::prelude::*;
+use datafusion::execution::SessionStateBuilder;
+use datafusion::prelude::*;
+use datafusion_python::context::PySessionContext as
DataFusionPythonSessionContext;
+use datafusion_python::utils::wait_for_future;
+
+use std::collections::HashMap;
+
use pyo3::prelude::*;
-pub mod context;
mod utils;
-
-pub use crate::context::PySessionContext;
+use utils::to_pyerr;
#[pymodule]
-fn pyballista_internal(_py: Python, m: Bound<'_, PyModule>) -> PyResult<()> {
+fn ballista_internal(_py: Python, m: Bound<'_, PyModule>) -> PyResult<()> {
pyo3_log::init();
// Ballista structs
- m.add_class::<PySessionContext>()?;
+ m.add_class::<PyBallistaBuilder>()?;
// DataFusion structs
m.add_class::<datafusion_python::dataframe::PyDataFrame>()?;
+ // Ballista Config
+ /*
+ // Future implementation will include more state and config options
+ m.add_class::<PySessionStateBuilder>()?;
+ m.add_class::<PySessionState>()?;
+ m.add_class::<PySessionConfig>()?;
+ */
Ok(())
}
+
+// Ballista Builder will take a HasMap/Dict Cionfg
+#[pyclass(name = "BallistaBuilder", module = "ballista", subclass)]
+pub struct PyBallistaBuilder {
+ conf: HashMap<String, String>,
+}
+
+#[pymethods]
+impl PyBallistaBuilder {
+ #[new]
+ pub fn new() -> Self {
+ Self {
+ conf: HashMap::new(),
+ }
+ }
+
+ pub fn config(
+ mut slf: PyRefMut<'_, Self>,
+ k: &str,
+ v: &str,
+ py: Python,
+ ) -> PyResult<PyObject> {
+ slf.conf.insert(k.into(), v.into());
+
+ Ok(slf.into_py(py))
+ }
+
+ pub fn show_config(&self) {
+ println!("Ballista Config:");
+ for ele in self.conf.iter() {
+ println!("\t{}: {}", ele.0, ele.1)
+ }
+ }
+
+ /// Construct the standalone instance from the SessionContext
+ pub fn standalone(&self, py: Python) ->
PyResult<DataFusionPythonSessionContext> {
+ // Build the config
+ let config: SessionConfig =
SessionConfig::from_string_hash_map(&self.conf)?;
+ // Build the state
+ let state = SessionStateBuilder::new()
+ .with_config(config)
+ .with_default_features()
+ .build();
+ // Build the context
+ let standalone_session = SessionContext::standalone_with_state(state);
+
+ // SessionContext is an async function
+ let ctx = wait_for_future(py, standalone_session)?;
+
+ // Convert the SessionContext into a Python SessionContext
+ Ok(ctx.into())
+ }
+
+ /// Construct the remote instance from the SessionContext
+ pub fn remote(
Review Comment:
May be worth allowing more customization at a later time for
`SessionStateBuilder`, but shouldn't be an issue right now.
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