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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | 1x 1x 1x 1x 1x 3x 3x 3x 3x 3x 3x 3x 1x 1x 1x 1x 3x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 3x 1x | import {IOrderbook, ImarketCodes, OBOptionsInterface} from '../interfaces'; import {useRef, useState, useEffect} from 'react'; import {throttle} from 'lodash'; import getLastBuffers from '../functions/getLastBuffers'; import socketDataEncoder from '../functions/socketDataEncoder'; import isImarketCodes from '../functions/isImarketCodes'; // extend extend OptionsInterface /** * useWsOrderbook is a custom hook that connects to a WebSocket API * and retrieves real-time order book data for a given market code. * @param targetMarketCodes - Array of market codes to retrieve orderbook data for. * @param options - `throttle_time` the data update frequency(ms). * @throws targetMarketCodes should be React State Value, if not, unexpected errors can occur. * @returns Object with the WebSocket object, connection status, and real-time orderbook data. */ function useWsOrderbook( targetMarketCodes: ImarketCodes, onError?: (error: Error) => void, options: OBOptionsInterface = {}, ) { const {throttle_time = 400, debug = false} = options; const SOCKET_URL = 'wss://api.upbit.com/websocket/v1'; const socket = useRef<WebSocket | null>(null); const buffer = useRef<IOrderbook[]>([]); const [isConnected, setIsConnected] = useState<boolean>(false); const [socketData, setSocketData] = useState<IOrderbook>(); const throttled = throttle(() => { try { const lastBuffers = getLastBuffers( buffer.current, [targetMarketCodes].length, ); lastBuffers && setSocketData(lastBuffers[0]); buffer.current = []; } catch (error) { console.error(error); } }, throttle_time); // socket 세팅 useEffect(() => { try { Iif (targetMarketCodes && !isImarketCodes(targetMarketCodes)) { throw new Error( 'targetMarketCodes does not have the correct interface', ); } if ([targetMarketCodes].length > 0 && !socket.current) { socket.current = new WebSocket(SOCKET_URL); socket.current.binaryType = 'arraybuffer'; const socketOpenHandler = () => { setIsConnected(true); Iif (debug) console.log( '[completed connect] | socket Open Type: ', 'orderbook', ); if (socket.current?.readyState == 1) { const sendContent = [ {ticket: 'test'}, { type: 'orderbook', codes: [targetMarketCodes.market], }, ]; socket.current.send(JSON.stringify(sendContent)); Iif (debug) console.log('message sending done'); } }; const socketCloseHandler = () => { setIsConnected(false); setSocketData(undefined); buffer.current = []; Iif (debug) console.log('connection closed'); }; const socketErrorHandler = (event: Event) => { const error = (event as ErrorEvent).error as Error; Iif (debug) console.error('[Error]', error); }; const socketMessageHandler = (evt: MessageEvent<ArrayBuffer>) => { const data = socketDataEncoder<IOrderbook>(evt.data); data && buffer.current.push(data); throttled(); }; socket.current.onopen = socketOpenHandler; socket.current.onclose = socketCloseHandler; socket.current.onerror = socketErrorHandler; socket.current.onmessage = socketMessageHandler; } return () => { if (socket.current) { if (socket.current.readyState != 0) { socket.current.close(); socket.current = null; } } }; } catch (error) { Iif (error instanceof Error) { if (onError) { onError(error); } else { console.error(error); throw error; } } } }, [targetMarketCodes]); return {socket: socket.current, isConnected, socketData}; } export default useWsOrderbook; |