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https://github.com/metachaos-systems/ccxtex
Elixir/Erlang interop for ccxt library
https://github.com/metachaos-systems/ccxtex
Last synced: 3 months ago
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Elixir/Erlang interop for ccxt library
- Host: GitHub
- URL: https://github.com/metachaos-systems/ccxtex
- Owner: metachaos-systems
- License: mit
- Created: 2018-05-24T15:00:19.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2019-04-01T12:52:44.000Z (over 5 years ago)
- Last Synced: 2024-07-19T20:18:50.595Z (4 months ago)
- Language: Elixir
- Size: 188 KB
- Stars: 12
- Watchers: 6
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.md
Awesome Lists containing this project
- awesome-ccxt - ccxtex - Elixir/Erlang. (Languages)
README
# Ccxtex
Ccxtex package provides easy (presently somewhat brittle) Elixir/Erlang interoperability with JS version of [ccxt library](https://github.com/ccxt/ccxt). Ccxt provides an unified API for querying for historical/recent data and trading operations for multiple cryptocurrency exchanges including GDAX, Bitfinex, Poloniex, Binance and others.
## Installation
### Elixir
```elixir
def deps do
[
{:ccxtex, "~> 0.3.0"}
]
end
```
### JS
You need nodejs (>= 10) installed to run Ccxtex.
## Status and roadmap
Ccxtex is usable, but is under active development. Some exchanges do not support all methods/require CORS/have other esoteric requirements. Please consult [ccxt documentation](https://github.com/ccxt/ccxt) for more details.
### Public APIs in progress
- [x] fetch_ticker
- [x] fetch_tickers
- [x] fetch_ohlcv
- [x] fetch_exchanges
- [x] fetch_markets
- [ ] fetch_trades
- [ ] fetch_order_book
- [ ] fetch_l2_order_book
### Developer experience improvements
- [x] unified public API call option structs
- [x] investigate alternative parallelism/concurrency implementation
- [ ] improve general usability of library
### Private APIs implementation and authentication are under consideration
### Exchanges
Usage:
`exchanges = exchanges()`
Return value example:
```
[
...
%{
has: %{
cancel_order: true,
cancel_orders: false,
cors: false,
create_deposit_address: true,
create_limit_order: true,
create_market_order: false,
create_order: true,
deposit: false,
edit_order: true,
fetch_balance: true,
fetch_closed_orders: "emulated",
fetch_currencies: true,
fetch_deposit_address: true,
fetch_funding_fees: false,
fetch_l2_order_book: true,
fetch_markets: true,
fetch_my_trades: true,
fetch_ohlcv: true,
fetch_open_orders: true,
fetch_order: "emulated",
fetch_order_book: true,
fetch_order_books: false,
fetch_orders: "emulated",
fetch_ticker: true,
fetch_tickers: true,
fetch_trades: true,
fetch_trading_fees: true,
private_api: true,
public_api: true,
withdraw: true
},
id: "poloniex",
timeout: 10000
}
]
```
### Fetch ticker and fetch tickers
`fetch_ticker` returns a ticker for a given exchange, base and quote symbols, while `fetch_tickers(exchange)` will return all tickers for a given exchange
```
exchange = "bitstamp"
base = "ETH"
quote = "USD"
ticker = fetch_ticker(exchange, base, quote)
```
Return value example:
```
%Ccxtex.Ticker{
ask: 577.35,
ask_volume: nil,
average: nil,
base_volume: 73309.52075575,
bid: 576.8,
bid_volume: nil,
change: nil,
close: 577.35,
datetime: "2018-05-24T14:06:09.000Z",
high: 619.95,
info: %{
ask: "577.35",
bid: "576.80",
high: "619.95",
last: "577.35",
low: "549.28",
open: "578.40",
timestamp: "1527170769",
volume: "73309.52075575",
vwap: "582.86"
},
last: 577.35,
low: 549.28,
open: 578.4,
percentage: nil,
previous_close: nil,
quote_volume: 42729187.26769644,
pair_symbol: "ETH/USD",
timestamp: 1527170769000,
vwap: 582.86
}
```
### Fetch OHLCV
Fetches a list of ohlcv data, takes OHLCVS.Opts argument
```
opts =
Ccxtex.OHLCVS.Opts.make!(%{
exchange: "poloniex",
base: "ETH",
quote: "USDT",
timeframe: "1h",
since: ~N[2018-01-01T00:00:00],
limit: 100
})
ohlcvs = fetch_ohlcvs(opts)
```
Return value example:
```
%Ccxtex.OHLCV{
base: "ETH",
base_volume: 4234.62695691,
close: 731.16,
exchange: "bitfinex2",
high: 737.07,
low: 726,
open: 736.77,
quote: "USDT",
timestamp: ~N[2018-01-01 00:00:00.000]
}
```
# Fetch markets
Fetches markets for a given exchange
Example:
`fetch_markets("poloniex")`
Response example:
```
[
...
%Ccxtex.Market{
active: true,
base: "ETH",
base_id: "eth",
id: "etheur",
info: %{
"base_decimals" => 8,
"counter_decimals" => 2,
"description" => "Ether / Euro",
"minimum_order" => "5.0 EUR",
"name" => "ETH/EUR",
"trading" => "Enabled",
"url_symbol" => "etheur"
},
limits: %{
"amount" => %{"min" => 1.0e-8},
"cost" => %{"min" => 5},
"price" => %{"min" => 0.01}
},
precision: %{"amount" => 8, "price" => 2},
quote: "EUR",
quote_id: "eur",
symbol: "ETH/EUR",
symbol_id: "eth_eur"
}
...
]
```