crypto-msg-parser 2.9.2

Parse websocket messages from cryptocurreny exchanges
Documentation 
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use crypto_message::{BboMsg, CandlestickMsg, OrderBookMsg, TradeMsg};
use serde_json::Value;
use simple_error::SimpleError;
use std::collections::HashMap;

use super::{gate_spot_20210916, gate_spot_current};

pub(super) fn extract_symbol(msg: &str) -> Result<String, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        gate_spot_20210916::extract_symbol(msg)
    } else {
        gate_spot_current::extract_symbol(msg)
    }
}

pub(super) fn extract_timestamp(msg: &str) -> Result<Option<i64>, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::extract_timestamp(msg)
    } else {
        gate_spot_current::extract_timestamp(msg)
    }
}

pub(super) fn parse_trade(msg: &str) -> Result<Vec<TradeMsg>, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::parse_trade(msg)
    } else if json_obj.contains_key("result") {
        gate_spot_current::parse_trade(msg)
    } else {
        Err(SimpleError::new(format!("Unknown message format: {msg}")))
    }
}

pub(super) fn parse_l2(msg: &str, timestamp: i64) -> Result<Vec<OrderBookMsg>, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::parse_l2(msg, timestamp)
    } else if json_obj.contains_key("result") {
        gate_spot_current::parse_l2(msg)
    } else {
        Err(SimpleError::new(format!("Unknown message format: {msg}")))
    }
}

pub(super) fn parse_l2_topk(msg: &str) -> Result<Vec<OrderBookMsg>, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::parse_l2_topk(msg)
    } else if json_obj.contains_key("result") {
        gate_spot_current::parse_l2_topk(msg)
    } else {
        Err(SimpleError::new(format!("Unknown message format: {msg}")))
    }
}

pub(super) fn parse_bbo(msg: &str) -> Result<Vec<BboMsg>, SimpleError> {
    let json_obj = serde_json::from_str::<HashMap<String, Value>>(msg).map_err(|_e| {
        SimpleError::new(format!("Failed to deserialize {msg} to HashMap<String, Value>"))
    })?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::parse_bbo(msg)
    } else if json_obj.contains_key("result") {
        gate_spot_current::parse_bbo(msg)
    } else {
        Err(SimpleError::new(format!("Unknown message format: {msg}")))
    }
}

pub(super) fn parse_candlestick(msg: &str) -> Result<Vec<CandlestickMsg>, SimpleError> {
    let json_obj =
        serde_json::from_str::<HashMap<String, Value>>(msg).map_err(SimpleError::from)?;
    if json_obj.contains_key("params") {
        #[allow(deprecated)]
        gate_spot_20210916::parse_candlestick(msg)
    } else if json_obj.contains_key("result") {
        gate_spot_current::parse_candlestick(msg)
    } else {
        Err(SimpleError::new(format!("Unknown message format: {msg}")))
    }
}