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use jsonrpc_core::futures::StreamExt;
use jsonrpc_core_client::transports::ws;
use solana_account_decoder::UiAccountEncoding;
use solana_client::{
rpc_config::{RpcAccountInfoConfig, RpcProgramAccountsConfig},
rpc_filter::{Memcmp, RpcFilterType},
rpc_response::{RpcKeyedAccount, RpcResponseContext},
};
use solana_rpc::rpc_pubsub::RpcSolPubSubClient;
use solana_sdk::{commitment_config::CommitmentConfig, pubkey::Pubkey};
use anyhow::Context;
use log::*;
use std::time::Duration;
use tokio_stream::StreamMap;
use crate::account_update_stream::{AccountUpdate, Message};
use crate::AnyhowWrap;
pub struct Config {
pub rpc_ws_url: String,
pub serum_program: Pubkey,
pub open_orders_authority: Pubkey,
}
async fn feed_data(
config: &Config,
mango_oracles: Vec<Pubkey>,
sender: async_channel::Sender<Message>,
) -> anyhow::Result<()> {
let connect = ws::try_connect::<RpcSolPubSubClient>(&config.rpc_ws_url).map_err_anyhow()?;
let client = connect.await.map_err_anyhow()?;
let account_info_config = RpcAccountInfoConfig {
encoding: Some(UiAccountEncoding::Base64),
commitment: Some(CommitmentConfig::processed()),
data_slice: None,
min_context_slot: None,
};
let all_accounts_config = RpcProgramAccountsConfig {
filters: None,
with_context: Some(true),
account_config: account_info_config.clone(),
};
let open_orders_accounts_config = RpcProgramAccountsConfig {
filters: Some(vec![
RpcFilterType::DataSize(3228), RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
0,
[0x73, 0x65, 0x72, 0x75, 0x6d, 5, 0, 0, 0, 0, 0, 0, 0].to_vec(),
)),
RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
45,
config.open_orders_authority.to_bytes().to_vec(),
)),
]),
with_context: Some(true),
account_config: account_info_config.clone(),
};
let mut mango_sub = client
.program_subscribe(
mango_v4::id().to_string(),
Some(all_accounts_config.clone()),
)
.map_err_anyhow()?;
let mut mango_oracles_sub_map = StreamMap::new();
for oracle in mango_oracles.into_iter() {
mango_oracles_sub_map.insert(
oracle,
client
.account_subscribe(
oracle.to_string(),
Some(RpcAccountInfoConfig {
encoding: Some(UiAccountEncoding::Base64),
commitment: Some(CommitmentConfig::processed()),
data_slice: None,
min_context_slot: None,
}),
)
.map_err_anyhow()?,
);
}
let mut open_orders_sub = client
.program_subscribe(
config.serum_program.to_string(),
Some(open_orders_accounts_config.clone()),
)
.map_err_anyhow()?;
let mut slot_sub = client.slots_updates_subscribe().map_err_anyhow()?;
loop {
tokio::select! {
message = mango_sub.next() => {
if let Some(data) = message {
let response = data.map_err_anyhow()?;
sender.send(Message::Account(AccountUpdate::from_rpc(response)?)).await.expect("sending must succeed");
} else {
warn!("mango stream closed");
return Ok(());
}
},
message = mango_oracles_sub_map.next() => {
if let Some(data) = message {
let response = data.1.map_err_anyhow()?;
let response = solana_client::rpc_response::Response{ context: RpcResponseContext{ slot: response.context.slot, api_version: None }, value: RpcKeyedAccount{ pubkey: data.0.to_string(), account: response.value} } ;
sender.send(Message::Account(AccountUpdate::from_rpc(response)?)).await.expect("sending must succeed");
} else {
warn!("oracle stream closed");
return Ok(());
}
},
message = open_orders_sub.next() => {
if let Some(data) = message {
let response = data.map_err_anyhow()?;
sender.send(Message::Account(AccountUpdate::from_rpc(response)?)).await.expect("sending must succeed");
} else {
warn!("serum stream closed");
return Ok(());
}
},
message = slot_sub.next() => {
if let Some(data) = message {
sender.send(Message::Slot(data.map_err_anyhow()?)).await.expect("sending must succeed");
} else {
warn!("slot update stream closed");
return Ok(());
}
},
_ = tokio::time::sleep(Duration::from_secs(60)) => {
warn!("websocket timeout");
return Ok(())
}
}
}
}
pub fn start(config: Config, mango_oracles: Vec<Pubkey>, sender: async_channel::Sender<Message>) {
tokio::spawn(async move {
loop {
info!("connecting to solana websocket streams");
let out = feed_data(&config, mango_oracles.clone(), sender.clone());
let result = out.await;
if let Err(err) = result {
warn!("websocket stream error: {err}");
}
}
});
}
pub async fn get_next_create_bank_slot(
receiver: async_channel::Receiver<Message>,
timeout: Duration,
) -> anyhow::Result<u64> {
let start = std::time::Instant::now();
loop {
let elapsed = start.elapsed();
if elapsed > timeout {
anyhow::bail!(
"did not receive a slot from the websocket connection in {}s",
timeout.as_secs()
);
}
let remaining_timeout = timeout - elapsed;
let msg = match tokio::time::timeout(remaining_timeout, receiver.recv()).await {
Err(_) => continue,
Ok(Err(err)) => {
return Err(err).context("while waiting for first slot from websocket connection");
}
Ok(Ok(msg)) => msg,
};
match msg {
Message::Slot(slot_update) => {
if let solana_client::rpc_response::SlotUpdate::CreatedBank { slot, .. } =
*slot_update
{
return Ok(slot);
}
}
_ => {}
}
}
}
