diff options
Diffstat (limited to 'packages/pipeline/src/data_sources')
-rw-r--r-- | packages/pipeline/src/data_sources/idex/index.ts | 82 | ||||
-rw-r--r-- | packages/pipeline/src/data_sources/oasis/index.ts | 103 |
2 files changed, 185 insertions, 0 deletions
diff --git a/packages/pipeline/src/data_sources/idex/index.ts b/packages/pipeline/src/data_sources/idex/index.ts new file mode 100644 index 000000000..c1e53c08d --- /dev/null +++ b/packages/pipeline/src/data_sources/idex/index.ts @@ -0,0 +1,82 @@ +import { fetchAsync } from '@0x/utils'; + +const IDEX_BASE_URL = 'https://api.idex.market'; +const MARKETS_URL = `${IDEX_BASE_URL}/returnTicker`; +const ORDERBOOK_URL = `${IDEX_BASE_URL}/returnOrderBook`; +const MAX_ORDER_COUNT = 100; // Maximum based on https://github.com/AuroraDAO/idex-api-docs#returnorderbook +export const IDEX_SOURCE = 'idex'; + +export interface IdexMarketsResponse { + [marketName: string]: IdexMarket; +} + +export interface IdexMarket { + last: string; + high: string; + low: string; + lowestAsk: string; + highestBid: string; + percentChange: string; + baseVolume: string; + quoteVolume: string; +} + +export interface IdexOrderbook { + asks: IdexOrder[]; + bids: IdexOrder[]; +} + +export interface IdexOrder { + price: string; + amount: string; + total: string; + orderHash: string; + params: IdexOrderParam; +} + +export interface IdexOrderParam { + tokenBuy: string; + buySymbol: string; + buyPrecision: number; + amountBuy: string; + tokenSell: string; + sellSymbol: string; + sellPrecision: number; + amountSell: string; + expires: number; + nonce: number; + user: string; +} + +// tslint:disable:prefer-function-over-method +// ^ Keep consistency with other sources and help logical organization +export class IdexSource { + /** + * Call Idex API to find out which markets they are maintaining orderbooks for. + */ + public async getMarketsAsync(): Promise<string[]> { + const params = { method: 'POST' }; + const resp = await fetchAsync(MARKETS_URL, params); + const respJson: IdexMarketsResponse = await resp.json(); + const markets: string[] = Object.keys(respJson); + return markets; + } + + /** + * Retrieve orderbook from Idex API for a given market. + * @param marketId String identifying the market we want data for. Eg. 'REP_AUG' + */ + public async getMarketOrderbookAsync(marketId: string): Promise<IdexOrderbook> { + const params = { + method: 'POST', + headers: { 'Content-Type': 'application/json' }, + body: JSON.stringify({ + market: marketId, + count: MAX_ORDER_COUNT, + }), + }; + const resp = await fetchAsync(ORDERBOOK_URL, params); + const respJson: IdexOrderbook = await resp.json(); + return respJson; + } +} diff --git a/packages/pipeline/src/data_sources/oasis/index.ts b/packages/pipeline/src/data_sources/oasis/index.ts new file mode 100644 index 000000000..3b30e9dfd --- /dev/null +++ b/packages/pipeline/src/data_sources/oasis/index.ts @@ -0,0 +1,103 @@ +import { fetchAsync } from '@0x/utils'; + +const OASIS_BASE_URL = 'https://data.makerdao.com/v1'; +const OASIS_MARKET_QUERY = `query { + oasisMarkets(period: "1 week") { + nodes { + id + base + quote + buyVol + sellVol + price + high + low + } + } +}`; +const OASIS_ORDERBOOK_QUERY = `query ($market: String!) { + allOasisOrders(condition: { market: $market }) { + totalCount + nodes { + market + offerId + price + amount + act + } + } +}`; +export const OASIS_SOURCE = 'oasis'; + +export interface OasisMarket { + id: string; // market symbol e.g MKRDAI + base: string; // base symbol e.g MKR + quote: string; // quote symbol e.g DAI + buyVol: number; // total buy volume (base) + sellVol: number; // total sell volume (base) + price: number; // volume weighted price (quote) + high: number; // max sell price + low: number; // min buy price +} + +export interface OasisMarketResponse { + data: { + oasisMarkets: { + nodes: OasisMarket[]; + }; + }; +} + +export interface OasisOrder { + offerId: number; // Offer Id + market: string; // Market symbol (base/quote) + price: string; // Offer price (quote) + amount: string; // Offer amount (base) + act: string; // Action (ask|bid) +} + +export interface OasisOrderbookResponse { + data: { + allOasisOrders: { + totalCount: number; + nodes: OasisOrder[]; + }; + }; +} + +// tslint:disable:prefer-function-over-method +// ^ Keep consistency with other sources and help logical organization +export class OasisSource { + /** + * Call Ddex API to find out which markets they are maintaining orderbooks for. + */ + public async getActiveMarketsAsync(): Promise<OasisMarket[]> { + const params = { + method: 'POST', + headers: { 'Content-Type': 'application/json' }, + body: JSON.stringify({ query: OASIS_MARKET_QUERY }), + }; + const resp = await fetchAsync(OASIS_BASE_URL, params); + const respJson: OasisMarketResponse = await resp.json(); + const markets = respJson.data.oasisMarkets.nodes; + return markets; + } + + /** + * Retrieve orderbook from Oasis API for a given market. + * @param marketId String identifying the market we want data for. Eg. 'REPAUG'. + */ + public async getMarketOrderbookAsync(marketId: string): Promise<OasisOrder[]> { + const input = { + market: marketId, + }; + const params = { + method: 'POST', + headers: { 'Content-Type': 'application/json' }, + body: JSON.stringify({ query: OASIS_ORDERBOOK_QUERY, variables: input }), + }; + const resp = await fetchAsync(OASIS_BASE_URL, params); + const respJson: OasisOrderbookResponse = await resp.json(); + return respJson.data.allOasisOrders.nodes; + } +} |