Struct Flows 

pub struct Flows {
    pub inputs_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>,
    pub outputs_senders: Arc<Mutex<HashMap<Uuid, Vec<Sender<DataflowMessage>>>>>,
    pub queries_senders: Arc<Mutex<HashMap<Uuid, Sender<DataflowMessage>>>>,
    pub queries_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>,
    pub queryables_senders: Arc<Mutex<HashMap<Uuid, HashMap<Uuid, Sender<DataflowMessage>>>>>,
    pub queryables_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>,
}

Represents the collection of flows in the system (all the MPSC channels)

Fields

inputs_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>

outputs_senders: Arc<Mutex<HashMap<Uuid, Vec<Sender<DataflowMessage>>>>>

queries_senders: Arc<Mutex<HashMap<Uuid, Sender<DataflowMessage>>>>

queries_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>

queryables_senders: Arc<Mutex<HashMap<Uuid, HashMap<Uuid, Sender<DataflowMessage>>>>>

queryables_receivers: Arc<Mutex<HashMap<Uuid, Receiver<DataflowMessage>>>>

Implementations

impl Flows

pub async fn new( layout: Arc<DataflowLayout>, flows: impl AsyncFnOnce(&mut FlowsBuilder) -> Result<(), Report>, ) -> Result<Flows, Report>

Creates a new Flows instance with a Building async closure

Examples found in repository

examples/simple_runtime.rs (lines 29-34)

async fn main() -> Result<()> {
    tracing_subscriber::fmt::init();

    let mut layout = DataflowLayout::new();

    let (source, output) = layout
        .node("source", async |builder: &mut NodeIOBuilder| {
            builder.output("out")
        })
        .await;

    let (operator, (op_in, op_out)) = layout
        .node("operator", async |builder: &mut NodeIOBuilder| {
            (builder.input("in"), builder.output("out"))
        })
        .await;

    let (sink, input) = layout
        .node("sink", async |builder: &mut NodeIOBuilder| {
            builder.input("in")
        })
        .await;

    let layout = layout.build();

    let flows = Flows::new(layout.clone(), async move |builder: &mut FlowsBuilder| {
        builder.connect(op_in, output, None)?;
        builder.connect(input, op_out, None)?;

        Ok(())
    })
    .await?;

    let runtime = Runtime::new(
        async |_file_ext: &mut FileExtManagerBuilder, _url_scheme: &mut UrlSchemeManagerBuilder| {
            Ok(())
        },
    )
    .await?;

    runtime
        .run(flows, async move |loader: &mut NodeLoader| {
            loader
                .load::<Timer>(source, serde_yml::from_str("frequency: 1.0")?)
                .await?;

            loader
                .load::<Transport>(operator, serde_yml::from_str("")?)
                .await?;

            loader
                .load::<Printer>(sink, serde_yml::from_str("")?)
                .await?;

            Ok(())
        })
        .await
}

examples/service_runtime.rs (lines 26-31)

async fn main() -> Result<()> {
    tracing_subscriber::fmt::init();

    let mut layout = DataflowLayout::new();

    let (service, (compare_to_128, compare_to_64)) = layout
        .node("service", async |builder: &mut NodeIOBuilder| {
            (
                builder.queryable("compare_to_128"),
                builder.queryable("compare_to_64"),
            )
        })
        .await;

    let (client, (ask_128, ask_64)) = layout
        .node("client", async |builder: &mut NodeIOBuilder| {
            (builder.query("ask_128"), builder.query("ask_64"))
        })
        .await;

    let layout = layout.build();

    let flows = Flows::new(layout.clone(), async move |builder: &mut FlowsBuilder| {
        builder.connect(ask_128, compare_to_128, None)?;
        builder.connect(ask_64, compare_to_64, None)?;

        Ok(())
    })
    .await?;

    let runtime = Runtime::new(
        async |_file_ext: &mut FileExtManagerBuilder, _url_scheme: &mut UrlSchemeManagerBuilder| {
            Ok(())
        },
    )
    .await?;

    let path = std::env::var("CARGO_MANIFEST_DIR")?;
    let examples = format!("file://{}/../../target/debug/examples", path);

    runtime
        .run(flows, async move |loader: &mut NodeLoader| {
            let service_file = Url::parse(&format!("{}/libservice.so", examples))?;
            let client_file = Url::parse(&format!("{}/libclient.so", examples))?;

            loader
                .load_url(service_file, service, serde_yml::from_str("")?)
                .await?;

            loader
                .load_url(client_file, client, serde_yml::from_str("")?)
                .await?;

            Ok(())
        })
        .await
}

pub fn node_io( &self, clock: Arc<HLC>, source: NodeLayout, ) -> (Inputs, Outputs, Queries, Queryables)

This is intended to be used only by the Runtime when loading nodes

Trait Implementations

impl Clone for Flows

fn clone(&self) -> Flows

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Flows

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.