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use crate::WSClient;
use std::collections::HashMap;
use std::sync::{Arc, Mutex};
use super::{
utils::CHANNEL_PAIR_DELIMITER,
ws_client_internal::{MiscMessage, WSClientInternal},
};
use super::{Candlestick, OrderBook, OrderBookSnapshot, Ticker, Trade, BBO};
use log::*;
use serde_json::Value;
pub(super) const EXCHANGE_NAME: &str = "ftx";
const WEBSOCKET_URL: &str = "wss://ftx.com/ws/";
const CLIENT_PING_INTERVAL_AND_MSG: (u64, &str) = (15, r#"{"op":"ping"}"#);
pub struct FtxWSClient<'a> {
client: WSClientInternal<'a>,
}
fn channels_to_commands(channels: &[String], subscribe: bool) -> Vec<String> {
let mut all_commands: Vec<String> = channels
.iter()
.filter(|ch| ch.starts_with('{'))
.map(|s| s.to_string())
.collect();
for s in channels.iter().filter(|ch| !ch.starts_with('{')) {
let v: Vec<&str> = s.split(CHANNEL_PAIR_DELIMITER).collect();
let channel = v[0];
let pair = v[1];
all_commands.append(&mut vec![format!(
r#"{{"op":"{}","channel":"{}","market":"{}"}}"#,
if subscribe {
"subscribe"
} else {
"unsubscribe"
},
channel,
pair
)])
}
all_commands
}
fn on_misc_msg(msg: &str) -> MiscMessage {
let obj = serde_json::from_str::<HashMap<String, Value>>(msg).unwrap();
let msg_type = obj.get("type").unwrap().as_str().unwrap();
match msg_type {
"pong" => MiscMessage::Pong,
"subscribed" | "unsubscribed" | "info" => {
info!("Received {} from {}", msg, EXCHANGE_NAME);
MiscMessage::Misc
}
"partial" | "update" => MiscMessage::Normal,
"error" => {
error!("Received {} from {}", msg, EXCHANGE_NAME);
panic!("Received {} from {}", msg, EXCHANGE_NAME);
}
_ => {
warn!("Received {} from {}", msg, EXCHANGE_NAME);
MiscMessage::Misc
}
}
}
fn to_raw_channel(channel: &str, pair: &str) -> String {
format!("{}{}{}", channel, CHANNEL_PAIR_DELIMITER, pair)
}
#[rustfmt::skip]
impl_trait!(Trade, FtxWSClient, subscribe_trade, "trades", to_raw_channel);
#[rustfmt::skip]
impl_trait!(BBO, FtxWSClient, subscribe_bbo, "ticker", to_raw_channel);
#[rustfmt::skip]
impl_trait!(OrderBook, FtxWSClient, subscribe_orderbook, "orderbook", to_raw_channel);
impl<'a> OrderBookSnapshot for FtxWSClient<'a> {
fn subscribe_orderbook_snapshot(&self, _pairs: &[String]) {
panic!("FTX does NOT have orderbook snapshot channel");
}
}
impl<'a> Ticker for FtxWSClient<'a> {
fn subscribe_ticker(&self, _pairs: &[String]) {
panic!("FTX does NOT have ticker channel");
}
}
impl<'a> Candlestick for FtxWSClient<'a> {
fn subscribe_candlestick(&self, _pairs: &[String], _interval: u32) {
panic!("FTX does NOT have candlestick channel");
}
}
define_client!(
FtxWSClient,
EXCHANGE_NAME,
WEBSOCKET_URL,
channels_to_commands,
on_misc_msg,
Some(CLIENT_PING_INTERVAL_AND_MSG),
None
);