ella 0.1.5

A streaming time-series datastore for low-latency applications.
Documentation 
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use ella_engine::table::{info::TopicInfo, Column};
use ella_tensor::Tensor;
use futures::SinkExt;
use tracing_subscriber::{
    prelude::__tracing_subscriber_SubscriberExt, util::SubscriberInitExt, Layer,
};

#[tokio::main]
async fn main() -> ella::Result<()> {
    tracing_subscriber::registry()
        .with(
            tracing_subscriber::fmt::layer().with_filter(
                tracing_subscriber::EnvFilter::new("INFO")
                    .add_directive("ella_engine=debug".parse().unwrap()),
            ),
        )
        .init();

    let server = tokio::spawn(async move {
        let syn = ella::open("file:///tmp/ella/")
            .or_create(ella::Config::default())
            .and_serve("localhost:50051")?
            .await?;

        let mut a = syn
            .table("a")
            .or_create(
                TopicInfo::builder()
                    .column(Column::builder("x", ella::TensorType::Float32).row_shape((10, 10))),
            )
            .await?
            .publish()?
            .rows(1)?;

        for _ in 0..10 {
            a.feed(ella::row!(
                Tensor::linspace(0_f32, 1_f32, 100).reshape((10, 10))
            ))
            .await?;
        }
        a.close().await?;
        drop(a);
        tokio::time::sleep(std::time::Duration::from_millis(500)).await;

        let x = syn
            .query("select x from a")
            .await?
            // .create_view("ax")
            // .if_not_exists()
            // .await?
            .col3::<f32>("x")?
            .execute()
            .await?;
        println!("{:?}", x);
        let _frame = syn.query("select * from b").await?.execute().await?;
        syn.shutdown().await?;

        ella::Result::Ok(())
    });
    let client = tokio::spawn(async move {
        tokio::time::sleep(std::time::Duration::from_millis(250)).await;
        let syn = ella::connect("http://localhost:50051").await?;
        let mut b = syn
            .table("b")
            .or_create(
                TopicInfo::builder()
                    .column(("y", ella::TensorType::String))
                    .column(("z", ella::TensorType::Int32)),
            )
            .await?
            .publish()?
            .rows(1)?;

        for i in 0..10 {
            b.feed(ella::row!("A".to_string(), i,)).await?;
        }
        b.close().await?;
        drop(b);

        syn.shutdown().await?;

        ella::Result::Ok(())
    });

    let (a, b) = futures::join!(server, client);
    a.unwrap().unwrap();
    b.unwrap().unwrap();

    Ok(())
}