// Copyright 2024 RustFS Team
//
// 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.

use std::sync::Arc;

use async_trait::async_trait;
use datafusion::error::DataFusionError;
use datafusion::execution::context::TaskContext;
use datafusion::physical_plan::{ExecutionPlan, execute_stream};
use rustfs_s3select_api::query::scheduler::{ExecutionResults, Scheduler};

pub struct LocalScheduler {}

#[async_trait]
impl Scheduler for LocalScheduler {
    async fn schedule(
        &self,
        plan: Arc<dyn ExecutionPlan>,
        context: Arc<TaskContext>,
    ) -> Result<ExecutionResults, DataFusionError> {
        let stream = execute_stream(plan, context)?;

        Ok(ExecutionResults::new(stream))
    }
}