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483 lines
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `lib/client/src/websocket_source.rs`."><title>websocket_source.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ba5701c5741a7b69.css" id="mainThemeStyle"><div id="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="mango_v4_client" data-themes="" data-resource-suffix="" data-rustdoc-version="1.70.0 (90c541806 2023-05-31)" data-search-js="search-e077946657036a58.js" data-settings-js="settings-298e1ea74db45b39.js" data-settings-css="settings-7bfb4c59cc6bc502.css" data-theme-light-css="light-0f8c037637f9eb3e.css" data-theme-dark-css="dark-1097f8e92a01e3cf.css" data-theme-ayu-css="ayu-614652228113ac93.css" ></div><script src="../../static.files/storage-62ce34ea385b278a.js"></script><script defer src="../../static.files/source-script-905937fbbdc8e9ea.js"></script><script defer src="../../source-files.js"></script><script defer src="../../static.files/main-f61008743c98d196.js"></script><noscript><link rel="stylesheet" media="(prefers-color-scheme:light)" href="../../static.files/light-0f8c037637f9eb3e.css"><link rel="stylesheet" media="(prefers-color-scheme:dark)" href="../../static.files/dark-1097f8e92a01e3cf.css"><link rel="stylesheet" href="../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../mango_v4_client/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre></div><pre class="rust"><code><span class="kw">use </span>anchor_lang::Discriminator;
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<span class="kw">use </span>jsonrpc_core::futures::StreamExt;
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<span class="kw">use </span>jsonrpc_core_client::transports::ws;
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<span class="kw">use </span>solana_account_decoder::UiAccountEncoding;
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<span class="kw">use </span>solana_client::{
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rpc_config::{RpcAccountInfoConfig, RpcProgramAccountsConfig},
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rpc_filter::{Memcmp, RpcFilterType},
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rpc_response::{RpcKeyedAccount, RpcResponseContext},
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};
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<span class="kw">use </span>solana_rpc::rpc_pubsub::RpcSolPubSubClient;
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<span class="kw">use </span>solana_sdk::{commitment_config::CommitmentConfig, pubkey::Pubkey};
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<span class="kw">use </span>anyhow::Context;
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<span class="kw">use </span>std::time::{Duration, Instant};
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<span class="kw">use </span>tokio_stream::StreamMap;
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<span class="kw">use </span>tracing::<span class="kw-2">*</span>;
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<span class="kw">use </span><span class="kw">crate</span>::account_update_stream::{AccountUpdate, ChainSlotUpdate, Message};
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<span class="kw">use </span><span class="kw">crate</span>::AnyhowWrap;
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<span class="kw">pub struct </span>Config {
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<span class="kw">pub </span>rpc_ws_url: String,
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<span class="kw">pub </span>serum_programs: Vec<Pubkey>,
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<span class="kw">pub </span>open_orders_authority: Pubkey,
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}
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<span class="kw">async fn </span>feed_data(
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config: <span class="kw-2">&</span>Config,
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mango_oracles: Vec<Pubkey>,
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sender: async_channel::Sender<Message>,
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) -> anyhow::Result<()> {
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<span class="kw">let </span>connect = ws::try_connect::<RpcSolPubSubClient>(<span class="kw-2">&</span>config.rpc_ws_url).map_err_anyhow()<span class="question-mark">?</span>;
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<span class="kw">let </span>client = connect.<span class="kw">await</span>.map_err_anyhow()<span class="question-mark">?</span>;
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<span class="kw">let </span>account_info_config = RpcAccountInfoConfig {
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encoding: <span class="prelude-val">Some</span>(UiAccountEncoding::Base64),
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commitment: <span class="prelude-val">Some</span>(CommitmentConfig::processed()),
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data_slice: <span class="prelude-val">None</span>,
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min_context_slot: <span class="prelude-val">None</span>,
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};
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<span class="kw">let </span>all_accounts_config = RpcProgramAccountsConfig {
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filters: <span class="prelude-val">None</span>,
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with_context: <span class="prelude-val">Some</span>(<span class="bool-val">true</span>),
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account_config: account_info_config.clone(),
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};
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<span class="kw">let </span>serum_oo_accounts_config = RpcProgramAccountsConfig {
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<span class="comment">// filter for only OpenOrders with v4 authority
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</span>filters: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[
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RpcFilterType::DataSize(<span class="number">3228</span>), <span class="comment">// open orders size
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// "serum" + u64 that is Initialized (1) + OpenOrders (4)
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</span>RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
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<span class="comment">// new_base58_encoded() does not work with old RPC nodes
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</span><span class="number">0</span>,
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[<span class="number">0x73</span>, <span class="number">0x65</span>, <span class="number">0x72</span>, <span class="number">0x75</span>, <span class="number">0x6d</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>].to_vec(),
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)),
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RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
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||
<span class="number">45</span>,
|
||
config.open_orders_authority.to_bytes().to_vec(),
|
||
)),
|
||
]),
|
||
with_context: <span class="prelude-val">Some</span>(<span class="bool-val">true</span>),
|
||
account_config: account_info_config.clone(),
|
||
};
|
||
<span class="kw">let </span>obv2_oo_accounts_config = RpcProgramAccountsConfig {
|
||
<span class="comment">// filter for only OpenOrders with the delegate as the mango group
|
||
// (the individual mango accounts are the owners)
|
||
</span>filters: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[
|
||
RpcFilterType::DataSize(
|
||
<span class="number">8 </span>+ std::mem::size_of::<openbook_v2::state::OpenOrdersAccount>() <span class="kw">as </span>u64,
|
||
),
|
||
RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
|
||
<span class="number">0</span>,
|
||
openbook_v2::state::OpenOrdersAccount::DISCRIMINATOR.to_vec(),
|
||
)),
|
||
RpcFilterType::Memcmp(Memcmp::new_raw_bytes(
|
||
<span class="number">96</span>,
|
||
config.open_orders_authority.to_bytes().to_vec(),
|
||
)),
|
||
]),
|
||
with_context: <span class="prelude-val">Some</span>(<span class="bool-val">true</span>),
|
||
account_config: account_info_config.clone(),
|
||
};
|
||
<span class="kw">let </span><span class="kw-2">mut </span>mango_sub = client
|
||
.program_subscribe(
|
||
mango_v4::id().to_string(),
|
||
<span class="prelude-val">Some</span>(all_accounts_config.clone()),
|
||
)
|
||
.map_err_anyhow()<span class="question-mark">?</span>;
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>mango_oracles_sub_map = StreamMap::new();
|
||
<span class="kw">for </span>oracle <span class="kw">in </span>mango_oracles.into_iter() {
|
||
mango_oracles_sub_map.insert(
|
||
oracle,
|
||
client
|
||
.account_subscribe(
|
||
oracle.to_string(),
|
||
<span class="prelude-val">Some</span>(RpcAccountInfoConfig {
|
||
encoding: <span class="prelude-val">Some</span>(UiAccountEncoding::Base64),
|
||
commitment: <span class="prelude-val">Some</span>(CommitmentConfig::processed()),
|
||
data_slice: <span class="prelude-val">None</span>,
|
||
min_context_slot: <span class="prelude-val">None</span>,
|
||
}),
|
||
)
|
||
.map_err_anyhow()<span class="question-mark">?</span>,
|
||
);
|
||
}
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>spot_oo_sub_map = StreamMap::new();
|
||
<span class="kw">for </span>serum_program <span class="kw">in </span>config.serum_programs.iter() {
|
||
spot_oo_sub_map.insert(
|
||
<span class="kw-2">*</span>serum_program,
|
||
client
|
||
.program_subscribe(
|
||
serum_program.to_string(),
|
||
<span class="prelude-val">Some</span>(serum_oo_accounts_config.clone()),
|
||
)
|
||
.map_err_anyhow()<span class="question-mark">?</span>,
|
||
);
|
||
}
|
||
spot_oo_sub_map.insert(
|
||
openbook_v2::id(),
|
||
client
|
||
.program_subscribe(openbook_v2::id().to_string(), <span class="prelude-val">Some</span>(obv2_oo_accounts_config))
|
||
.map_err_anyhow()<span class="question-mark">?</span>,
|
||
);
|
||
|
||
<span class="comment">// Make sure the serum3_oo_sub_map does not exit when there's no serum_programs
|
||
</span><span class="kw">let </span>_unused_serum_sender;
|
||
<span class="kw">if </span>config.serum_programs.is_empty() {
|
||
<span class="kw">let </span>(sender, receiver) = jsonrpc_core::futures::channel::mpsc::unbounded();
|
||
_unused_serum_sender = sender;
|
||
spot_oo_sub_map.insert(
|
||
Pubkey::default(),
|
||
jsonrpc_core_client::TypedSubscriptionStream::new(receiver, <span class="string">"foo"</span>),
|
||
);
|
||
}
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>slot_sub = client.slots_updates_subscribe().map_err_anyhow()<span class="question-mark">?</span>;
|
||
|
||
<span class="kw">loop </span>{
|
||
<span class="macro">tokio::select! </span>{
|
||
message = mango_sub.next() => {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(data) = message {
|
||
<span class="kw">let </span>response = data.map_err_anyhow()<span class="question-mark">?</span>;
|
||
sender.send(Message::Account(AccountUpdate::from_rpc(response)<span class="question-mark">?</span>)).<span class="kw">await</span>.expect(<span class="string">"sending must succeed"</span>);
|
||
} <span class="kw">else </span>{
|
||
<span class="macro">warn!</span>(<span class="string">"mango stream closed"</span>);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(());
|
||
}
|
||
},
|
||
message = mango_oracles_sub_map.next() => {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(data) = message {
|
||
<span class="kw">let </span>response = data.<span class="number">1</span>.map_err_anyhow()<span class="question-mark">?</span>;
|
||
<span class="kw">let </span>response = solana_client::rpc_response::Response{ context: RpcResponseContext{ slot: response.context.slot, api_version: <span class="prelude-val">None </span>}, value: RpcKeyedAccount{ pubkey: data.<span class="number">0</span>.to_string(), account: response.value} } ;
|
||
sender.send(Message::Account(AccountUpdate::from_rpc(response)<span class="question-mark">?</span>)).<span class="kw">await</span>.expect(<span class="string">"sending must succeed"</span>);
|
||
} <span class="kw">else </span>{
|
||
<span class="macro">warn!</span>(<span class="string">"oracle stream closed"</span>);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(());
|
||
}
|
||
},
|
||
message = spot_oo_sub_map.next() => {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(data) = message {
|
||
<span class="kw">let </span>response = data.<span class="number">1</span>.map_err_anyhow()<span class="question-mark">?</span>;
|
||
sender.send(Message::Account(AccountUpdate::from_rpc(response)<span class="question-mark">?</span>)).<span class="kw">await</span>.expect(<span class="string">"sending must succeed"</span>);
|
||
} <span class="kw">else </span>{
|
||
<span class="macro">warn!</span>(<span class="string">"spot oo stream closed"</span>);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(());
|
||
}
|
||
},
|
||
message = slot_sub.next() => {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(data) = message {
|
||
sender.send(Message::Slot(ChainSlotUpdate{
|
||
slot_update: data.map_err_anyhow()<span class="question-mark">?</span>,
|
||
reception_time: Instant::now()
|
||
})).<span class="kw">await</span>.expect(<span class="string">"sending must succeed"</span>);
|
||
} <span class="kw">else </span>{
|
||
<span class="macro">warn!</span>(<span class="string">"slot update stream closed"</span>);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(());
|
||
}
|
||
},
|
||
<span class="kw">_ </span>= tokio::time::sleep(Duration::from_secs(<span class="number">60</span>)) => {
|
||
<span class="macro">warn!</span>(<span class="string">"websocket timeout"</span>);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(())
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub fn </span>start(config: Config, mango_oracles: Vec<Pubkey>, sender: async_channel::Sender<Message>) {
|
||
tokio::spawn(<span class="kw">async move </span>{
|
||
<span class="comment">// if the websocket disconnects, we get no data in a while etc, reconnect and try again
|
||
</span><span class="kw">loop </span>{
|
||
<span class="macro">info!</span>(<span class="string">"connecting to solana websocket streams"</span>);
|
||
<span class="kw">let </span>out = feed_data(<span class="kw-2">&</span>config, mango_oracles.clone(), sender.clone());
|
||
<span class="kw">let </span>result = out.<span class="kw">await</span>;
|
||
<span class="kw">if let </span><span class="prelude-val">Err</span>(err) = result {
|
||
<span class="macro">warn!</span>(<span class="string">"websocket stream error: {err}"</span>);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
<span class="kw">pub async fn </span>get_next_create_bank_slot(
|
||
receiver: async_channel::Receiver<Message>,
|
||
timeout: Duration,
|
||
) -> anyhow::Result<u64> {
|
||
<span class="kw">let </span>start = std::time::Instant::now();
|
||
<span class="kw">loop </span>{
|
||
<span class="kw">let </span>elapsed = start.elapsed();
|
||
<span class="kw">if </span>elapsed > timeout {
|
||
<span class="macro">anyhow::bail!</span>(
|
||
<span class="string">"did not receive a slot from the websocket connection in {}s"</span>,
|
||
timeout.as_secs()
|
||
);
|
||
}
|
||
<span class="kw">let </span>remaining_timeout = timeout - elapsed;
|
||
|
||
<span class="kw">let </span>msg = <span class="kw">match </span>tokio::time::timeout(remaining_timeout, receiver.recv()).<span class="kw">await </span>{
|
||
<span class="comment">// timeout
|
||
</span><span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">continue</span>,
|
||
<span class="comment">// channel close
|
||
</span><span class="prelude-val">Ok</span>(<span class="prelude-val">Err</span>(err)) => {
|
||
<span class="kw">return </span><span class="prelude-val">Err</span>(err).context(<span class="string">"while waiting for first slot from websocket connection"</span>);
|
||
}
|
||
<span class="comment">// success
|
||
</span><span class="prelude-val">Ok</span>(<span class="prelude-val">Ok</span>(msg)) => msg,
|
||
};
|
||
|
||
<span class="kw">match </span>msg {
|
||
Message::Slot(slot_update) => {
|
||
<span class="kw">if let </span>solana_client::rpc_response::SlotUpdate::CreatedBank { slot, .. } =
|
||
<span class="kw-2">*</span>slot_update.slot_update
|
||
{
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(slot);
|
||
}
|
||
}
|
||
<span class="kw">_ </span>=> {}
|
||
}
|
||
}
|
||
}
|
||
</code></pre></div></section></main></body></html> |