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use std::sync::Arc;
use eyre::{Context as _, Result};
use futures::{StreamExt as _, stream::FuturesUnordered};
use tokio::sync::Semaphore;
macro_rules! define_machines {
($(($name:ident, $idx:expr, $hostname:expr, $cpus:expr, $interface:expr)),*) => {
#[derive(Debug)]
pub struct UnknownMachine;
impl std::fmt::Display for UnknownMachine {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("unknown machine")
}
}
impl std::error::Error for UnknownMachine {}
#[derive(Debug, Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Hash)]
pub enum Machine {
$($name,)*
}
impl std::fmt::Display for Machine {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.hostname())
}
}
impl std::str::FromStr for Machine {
type Err = UnknownMachine;
fn from_str(v: &str) -> Result<Self, Self::Err> {
match v {
$($hostname => Ok(Self::$name),)*
_ => Err(UnknownMachine),
}
}
}
impl Machine {
pub fn hostname(&self) -> &'static str {
match self {
$(Self::$name => $hostname,)*
}
}
pub fn index(&self) -> usize {
match self {
$(Self::$name => $idx,)*
}
}
pub fn from_hostname(hostname: &str) -> Option<Self> {
match hostname {
$($hostname => Some(Self::$name),)*
_ => None
}
}
pub fn from_index(index: usize) -> Option<Self> {
match index {
$($idx => Some(Self::$name),)*
_ => None,
}
}
pub fn cpus(&self) -> u32 {
match self {
$(Self::$name => $cpus,)*
}
}
pub fn interface(&self) -> &'static str {
match self {
$(Self::$name => $interface,)*
}
}
}
};
}
// node cpu counts
// oarnodes | grep '^network_address' | cut -d' ' -f3 | sort | uniq -c
define_machines!(
(Alakazam01, 0, "alakazam-01", 64, "bond0"),
(Alakazam02, 1, "alakazam-02", 64, "bond0"),
(Alakazam03, 2, "alakazam-03", 64, "bond0"),
(Alakazam04, 3, "alakazam-04", 64, "bond0"),
(Alakazam05, 4, "alakazam-05", 64, "bond0"),
(Alakazam06, 5, "alakazam-06", 64, "bond0"),
(Alakazam07, 6, "alakazam-07", 64, "bond0"),
(Alakazam08, 7, "alakazam-08", 64, "bond0"),
(Bulbasaur1, 8, "bulbasaur-1", 16, "bond0"),
(Bulbasaur2, 9, "bulbasaur-2", 16, "bond0"),
(Bulbasaur3, 10, "bulbasaur-3", 16, "bond0"),
(Charmander1, 11, "charmander-1", 32, "bond0"),
(Charmander2, 12, "charmander-2", 32, "bond0"),
(Charmander3, 13, "charmander-3", 32, "bond0"),
(Charmander4, 14, "charmander-4", 32, "bond0"),
(Charmander5, 15, "charmander-5", 32, "bond0"),
(Gengar1, 16, "gengar-1", 8, "bond0"),
(Gengar2, 17, "gengar-2", 8, "bond0"),
(Gengar3, 18, "gengar-3", 8, "bond0"),
(Gengar4, 19, "gengar-4", 8, "bond0"),
(Gengar5, 20, "gengar-5", 8, "bond0"),
(Kadabra01, 21, "kadabra-01", 64, "bond0"),
(Kadabra02, 22, "kadabra-02", 64, "bond0"),
(Kadabra03, 23, "kadabra-03", 64, "bond0"),
(Kadabra04, 24, "kadabra-04", 64, "bond0"),
(Kadabra05, 25, "kadabra-05", 64, "bond0"),
(Kadabra06, 26, "kadabra-06", 64, "bond0"),
(Kadabra07, 27, "kadabra-07", 64, "bond0"),
(Kadabra08, 28, "kadabra-08", 64, "bond0"),
(Lugia1, 29, "lugia-1", 64, "bond0"),
(Lugia2, 30, "lugia-2", 64, "bond0"),
(Lugia3, 31, "lugia-3", 64, "bond0"),
(Lugia4, 32, "lugia-4", 64, "bond0"),
(Lugia5, 33, "lugia-5", 64, "bond0"),
(Magikarp1, 34, "magikarp-1", 16, todo!()),
(Moltres01, 35, "moltres-01", 64, "bond0"),
(Moltres02, 36, "moltres-02", 64, "bond0"),
(Moltres03, 37, "moltres-03", 64, "bond0"),
(Moltres04, 38, "moltres-04", 64, "bond0"),
(Moltres05, 39, "moltres-05", 64, "bond0"),
(Moltres06, 40, "moltres-06", 64, "bond0"),
(Moltres07, 41, "moltres-07", 64, "bond0"),
(Moltres08, 42, "moltres-08", 64, "bond0"),
(Moltres09, 43, "moltres-09", 64, "bond0"),
(Moltres10, 44, "moltres-10", 64, "bond0"),
(Oddish1, 45, "oddish-1", 4, "bond0"),
(Psyduck1, 46, "psyduck-1", 8, "bond0"),
(Psyduck2, 47, "psyduck-2", 8, "bond0"),
(Psyduck3, 48, "psyduck-3", 8, "bond0"),
(Shelder1, 49, "shelder-1", 64, "bond0"),
(Squirtle1, 50, "squirtle-1", 24, "bond0"),
(Squirtle2, 51, "squirtle-2", 24, "bond0"),
(Squirtle3, 52, "squirtle-3", 24, "bond0"),
(Squirtle4, 53, "squirtle-4", 24, "bond0"),
(Staryu1, 54, "staryu-1", 12, todo!()),
(Sudowoodo1, 55, "sudowoodo-1", 16, todo!()),
(Vulpix1, 56, "vulpix-1", 112, todo!()),
(Snorlax01, 57, "snorlax-01", 64, "bond0"),
(Snorlax02, 58, "snorlax-02", 64, "bond0"),
(Snorlax03, 59, "snorlax-03", 64, "bond0")
);
pub async fn for_each<F, FUT, RET>(
machines: impl IntoIterator<Item = &Machine>,
f: F,
) -> Result<Vec<(Machine, RET)>>
where
F: Fn(Machine) -> FUT,
RET: Send + 'static,
FUT: std::future::Future<Output = Result<RET>>,
{
let limit = match std::env::var("OAR_P2P_CONCURRENCY_LIMIT") {
Ok(value) => {
tracing::trace!("parsing concurrency limit value '{value}'");
let limit = value
.parse()
.expect("invalid value for OAR_P2P_CONCURRENCY_LIMIT");
tracing::debug!("using concurrency limit = {limit}");
limit
}
Err(_) => 0,
};
for_each_with_limit(machines, limit, f).await
}
pub async fn for_each_with_limit<F, FUT, RET>(
machines: impl IntoIterator<Item = &Machine>,
limit: usize,
f: F,
) -> Result<Vec<(Machine, RET)>>
where
F: Fn(Machine) -> FUT,
RET: Send + 'static,
FUT: std::future::Future<Output = Result<RET>>,
{
let sem = Arc::new(Semaphore::new(if limit == 0 {
Semaphore::MAX_PERMITS
} else {
limit
}));
let mut futures = FuturesUnordered::new();
for &machine in machines {
let fut = f(machine);
let sem = sem.clone();
let fut = async move {
let _permit = sem.acquire().await.unwrap();
(machine, fut.await)
};
futures.push(fut);
}
let mut results = Vec::default();
while let Some((machine, result)) = futures.next().await {
match result {
Ok(value) => results.push((machine, value)),
Err(err) => {
return Err(err).with_context(|| format!("running task on machine {machine}"));
}
}
}
Ok(results)
}
|
