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Do not spawn additional task for on-demand relays (#933)

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* do not spawn additional task for on-demand relays

* compilation
This commit is contained in:
Svyatoslav Nikolsky
2021-04-26 16:05:02 +03:00
committed by Bastian Köcher
parent 0e34a11309
commit 38cd3a328d
6 changed files with 46 additions and 12 deletions
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bridges/relays/utils/src/relay_loop.rs
+25 -3
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@@ -38,6 +38,7 @@ pub trait Client: 'static + Clone + Send + Sync {
pub fn relay_loop<SC, TC>(source_client: SC, target_client: TC) -> Loop<SC, TC, ()> {
Loop {
reconnect_delay: RECONNECT_DELAY,
spawn_loop_task: true,
source_client,
target_client,
loop_metric: None,
@@ -49,6 +50,7 @@ pub fn relay_metrics(prefix: Option<String>, params: MetricsParams) -> LoopMetri
LoopMetrics {
relay_loop: Loop {
reconnect_delay: RECONNECT_DELAY,
spawn_loop_task: true,
source_client: (),
target_client: (),
loop_metric: None,
@@ -63,6 +65,7 @@ pub fn relay_metrics(prefix: Option<String>, params: MetricsParams) -> LoopMetri
/// Generic relay loop.
pub struct Loop<SC, TC, LM> {
reconnect_delay: Duration,
spawn_loop_task: bool,
source_client: SC,
target_client: TC,
loop_metric: Option<LM>,
@@ -84,11 +87,23 @@ impl<SC, TC, LM> Loop<SC, TC, LM> {
self
}
/// Set spawn-dedicated-loop-task flag.
///
/// If `true` (default), separate async task is spawned to run relay loop. This is the default
/// behavior for all loops. If `false`, then loop is executed as a part of the current
/// task. The `false` is used for on-demand tasks, which are cancelled from time to time
/// and there's already a dedicated on-demand task for running such loops.
pub fn spawn_loop_task(mut self, spawn_loop_task: bool) -> Self {
self.spawn_loop_task = spawn_loop_task;
self
}
/// Start building loop metrics using given prefix.
pub fn with_metrics(self, prefix: Option<String>, params: MetricsParams) -> LoopMetrics<SC, TC, ()> {
LoopMetrics {
relay_loop: Loop {
reconnect_delay: self.reconnect_delay,
spawn_loop_task: self.spawn_loop_task,
source_client: self.source_client,
target_client: self.target_client,
loop_metric: None,
@@ -113,7 +128,8 @@ impl<SC, TC, LM> Loop<SC, TC, LM> {
TC: 'static + Client,
LM: 'static + Send + Clone,
{
async_std::task::spawn(async move {
let spawn_loop_task = self.spawn_loop_task;
let run_loop_task = async move {
crate::initialize::initialize_loop(loop_name);
loop {
@@ -162,8 +178,13 @@ impl<SC, TC, LM> Loop<SC, TC, LM> {
}
Ok(())
})
.await
};
if spawn_loop_task {
async_std::task::spawn(run_loop_task).await
} else {
run_loop_task.await
}
}
}
@@ -239,6 +260,7 @@ impl<SC, TC, LM> LoopMetrics<SC, TC, LM> {
Ok(Loop {
reconnect_delay: self.relay_loop.reconnect_delay,
spawn_loop_task: self.relay_loop.spawn_loop_task,
source_client: self.relay_loop.source_client,
target_client: self.relay_loop.target_client,
loop_metric: self.loop_metric,