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use dora_core::{
config::{DataId, NodeId},
descriptor::{Descriptor, OperatorDefinition, OperatorSource},
message::{ArrowTypeInfo, MetadataParameters},
};
use dora_node_api::{DataSample, Event};
use eyre::{Context, Result};
use std::any::Any;
use tokio::sync::{mpsc::Sender, oneshot};
pub mod channel;
#[cfg(feature = "python")]
mod python;
mod shared_lib;
#[allow(unused_variables)]
pub fn run_operator(
node_id: &NodeId,
operator_definition: OperatorDefinition,
incoming_events: flume::Receiver<Event>,
events_tx: Sender<OperatorEvent>,
init_done: oneshot::Sender<Result<()>>,
dataflow_descriptor: &Descriptor,
) -> eyre::Result<()> {
match &operator_definition.config.source {
OperatorSource::SharedLibrary(source) => {
shared_lib::run(
node_id,
&operator_definition.id,
source,
events_tx,
incoming_events,
init_done,
)
.wrap_err_with(|| {
format!(
"failed to spawn shared library operator for {}",
operator_definition.id
)
})?;
}
#[allow(unused_variables)]
OperatorSource::Python(source) => {
#[cfg(feature = "python")]
python::run(
node_id,
&operator_definition.id,
source,
events_tx,
incoming_events,
init_done,
dataflow_descriptor,
)
.wrap_err_with(|| {
format!(
"failed to spawn Python operator for {}",
operator_definition.id
)
})?;
#[cfg(not(feature = "python"))]
tracing::error!(
"Dora runtime tried spawning Python Operator outside of python environment."
);
}
OperatorSource::Wasm(_) => {
tracing::error!("WASM operators are not supported yet");
}
}
Ok(())
}
#[derive(Debug)]
#[allow(dead_code)]
pub enum OperatorEvent {
AllocateOutputSample {
len: usize,
sample: oneshot::Sender<eyre::Result<DataSample>>,
},
Output {
output_id: DataId,
type_info: ArrowTypeInfo,
parameters: MetadataParameters,
data: Option<DataSample>,
},
Error(eyre::Error),
Panic(Box<dyn Any + Send>),
Finished {
reason: StopReason,
},
}
#[derive(Debug)]
pub enum StopReason {
InputsClosed,
ExplicitStop,
ExplicitStopAll,
}
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