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fix: keep grpc alive by sending using ping-pong #160

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merged 1 commit into from
Oct 9, 2024
Merged

fix: keep grpc alive by sending using ping-pong #160

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40 changes: 36 additions & 4 deletions grpc-ingest/src/grpc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,9 @@ use {
util::create_shutdown,
},
anyhow::Context,
futures::stream::StreamExt,
futures::{channel::mpsc::SendError, stream::StreamExt, Sink, SinkExt},
redis::streams::StreamMaxlen,
std::{collections::HashMap, sync::Arc, time::Duration},
std::{collections::HashMap, pin::Pin, sync::Arc, time::Duration},
tokio::{sync::Mutex, time::sleep},
topograph::{
executor::{Executor, Nonblock, Tokio},
Expand All @@ -16,23 +16,28 @@ use {
tracing::{debug, warn},
yellowstone_grpc_client::GeyserGrpcClient,
yellowstone_grpc_proto::{
geyser::{SubscribeRequest, SubscribeUpdate},
geyser::{SubscribeRequest, SubscribeRequestPing, SubscribeUpdate},
prelude::subscribe_update::UpdateOneof,
prost::Message,
},
yellowstone_grpc_tools::config::GrpcRequestToProto,
};

const PING_ID: i32 = 0;

enum GrpcJob {
FlushRedisPipe,
ProcessSubscribeUpdate(Box<SubscribeUpdate>),
}

type SubscribeTx = Pin<Box<dyn Sink<SubscribeRequest, Error = SendError> + Send + Sync>>;

#[derive(Clone)]
pub struct GrpcJobHandler {
connection: redis::aio::MultiplexedConnection,
config: Arc<ConfigGrpc>,
pipe: Arc<Mutex<TrackedPipeline>>,
subscribe_tx: Arc<Mutex<SubscribeTx>>,
}

impl<'a> AsyncHandler<GrpcJob, topograph::executor::Handle<'a, GrpcJob, Nonblock<Tokio>>>
Expand All @@ -49,6 +54,8 @@ impl<'a> AsyncHandler<GrpcJob, topograph::executor::Handle<'a, GrpcJob, Nonblock
let connection = self.connection.clone();
let pipe = Arc::clone(&self.pipe);

let subscribe_tx = Arc::clone(&self.subscribe_tx);

async move {
match job {
GrpcJob::FlushRedisPipe => {
Expand Down Expand Up @@ -98,6 +105,29 @@ impl<'a> AsyncHandler<GrpcJob, topograph::executor::Handle<'a, GrpcJob, Nonblock

debug!(message = "Transaction update", ?transaction);
}
UpdateOneof::Ping(_) => {
subscribe_tx
.lock()
.await
.send(SubscribeRequest {
ping: Some(SubscribeRequestPing { id: PING_ID }),
..Default::default()
})
.await
.map_err(|err| {
warn!(message = "Failed to send ping", ?err);
})
.ok();

debug!(message = "Ping", id = PING_ID);
}
UpdateOneof::Pong(pong) => {
if pong.id == PING_ID {
debug!(message = "Pong", id = PING_ID);
} else {
warn!(message = "Unknown pong id", id = pong.id);
}
}
var => warn!(message = "Unknown update variant", ?var),
}
}
Expand Down Expand Up @@ -144,9 +174,10 @@ pub async fn run(config: ConfigGrpc) -> anyhow::Result<()> {
.await
.context("failed to connect to gRPC")?;

let (_subscribe_tx, stream) = dragon_mouth_client
let (subscribe_tx, stream) = dragon_mouth_client
.subscribe_with_request(Some(request))
.await?;

tokio::pin!(stream);

let exec = Executor::builder(Nonblock(Tokio))
Expand All @@ -155,6 +186,7 @@ pub async fn run(config: ConfigGrpc) -> anyhow::Result<()> {
config: Arc::clone(&config),
connection: connection.clone(),
pipe: Arc::clone(&pipe),
subscribe_tx: Arc::new(Mutex::new(Box::pin(subscribe_tx))),
})?;

let deadline_config = Arc::clone(&config);
Expand Down
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