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use crate::WSClient;
use std::collections::HashMap;
use super::ws_client_internal::{MiscMessage, WSClientInternal};
use log::*;
use serde_json::{json, Value};
pub(super) const EXCHANGE_NAME: &str = "BitMEX";
const WEBSOCKET_URL: &str = "wss://www.bitmex.com/realtime";
pub struct BitMEXWSClient<'a> {
client: WSClientInternal<'a>,
}
fn serialize_command(channels: &[String], subscribe: bool) -> Vec<String> {
let mut object = HashMap::<&str, Value>::new();
object.insert(
"op",
serde_json::to_value(if subscribe {
"subscribe"
} else {
"unsubscribe"
})
.unwrap(),
);
object.insert("args", json!(channels));
vec![serde_json::to_string(&object).unwrap()]
}
fn on_misc_msg(msg: &str) -> MiscMessage {
let resp = serde_json::from_str::<HashMap<String, Value>>(&msg);
if resp.is_err() {
error!("{} is not a JSON string, {}", msg, EXCHANGE_NAME);
return MiscMessage::Misc;
}
let obj = resp.unwrap();
if !obj.contains_key("table") {
warn!("Received {} from {}", msg, EXCHANGE_NAME);
MiscMessage::Misc
} else {
MiscMessage::Normal
}
}
define_client!(
BitMEXWSClient,
EXCHANGE_NAME,
WEBSOCKET_URL,
serialize_command,
on_misc_msg
);