malstrom 0.1.0

Malstrom is a distributed, stateful stream processing framework written in Rust.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

//! A multithreaded program
use malstrom::keyed::partitioners::rendezvous_select;
use malstrom::operators::*;
use malstrom::runtime::MultiThreadRuntime;
use malstrom::snapshot::NoPersistence;
use malstrom::sources::{SingleIteratorSource, StatelessSource};
use malstrom::worker::StreamProvider;

fn main() {
    MultiThreadRuntime::builder()
        .parrallelism(4)
        .persistence(NoPersistence)
        .build(build_dataflow)
        .execute()
        .unwrap()
}

fn build_dataflow(provider: &mut dyn StreamProvider) -> () {
    provider
        .new_stream()
        .source(
            "iter-source",
            StatelessSource::new(SingleIteratorSource::new(0..=100)),
        )
        .key_distribute("key-by-value", |x| x.value, rendezvous_select)
        .map("double", |x| x * 2)
        .inspect("print", |x, ctx| {
            println!("{x:?} @ Worker {}", ctx.worker_id)
        });
}