预言机

查询 Indexer 获取预言机模块相关数据的示例代码。

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使用 gRPC

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获取预言机列表

import { IndexerGrpcOracleApi } from "@injectivelabs/sdk-ts/client/indexer";
import { getNetworkEndpoints, Network } from "@injectivelabs/networks";

const endpoints = getNetworkEndpoints(Network.Testnet);
const indexerGrpcOracleApi = new IndexerGrpcOracleApi(endpoints.indexer);

const oracleList = await indexerGrpcOracleApi.fetchOracleList();

console.log(oracleList);

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从预言机获取价格

基础和报价预言机符号始终从市场本身获取。它们可能以不同于普通符号的表示形式存在（例如 pyth 预言机的哈希值）。

import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import {
  IndexerGrpcOracleApi,
  IndexerGrpcDerivativesApi,
} from "@injectivelabs/sdk-ts/client/indexer";

const endpoints = getNetworkEndpoints(Network.Testnet);
const indexerGrpcDerivativesApi = new IndexerGrpcDerivativesApi(endpoints.indexer);
const indexerGrpcOracleApi = new IndexerGrpcOracleApi(endpoints.indexer);

// 获取衍生品市场列表
const markets = await indexerGrpcDerivativesApi.fetchMarkets();

// 根据交易对查找特定市场
const market = markets.find((market) => market.ticker === "INJ/USDT PERP");

if (!market) {
  throw new Error("Market not found");
}

// 这些值是从 indexer 获取的市场对象的一部分
// 即 `oracleBase` 和 `oracleQuote`
const baseSymbol = market.oracleBase;
const quoteSymbol = market.oracleQuote;
const oracleType = market.oracleType;

const oraclePrice = await indexerGrpcOracleApi.fetchOraclePriceNoThrow({
  baseSymbol,
  quoteSymbol,
  oracleType,
});

console.log(oraclePrice);